US2297691A - Electrophotography - Google Patents
Electrophotography Download PDFInfo
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- US2297691A US2297691A US265925A US26592539A US2297691A US 2297691 A US2297691 A US 2297691A US 265925 A US265925 A US 265925A US 26592539 A US26592539 A US 26592539A US 2297691 A US2297691 A US 2297691A
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G9/00—Developers
- G03G9/08—Developers with toner particles
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/26—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is obtained by projection of the entire image, i.e. whole-frame projection
- G03G15/266—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is obtained by projection of the entire image, i.e. whole-frame projection using a reusable recording medium in form of a plate or a sheet
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/02—Charge-receiving layers
- G03G5/04—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor
- G03G5/08—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic
- G03G5/082—Photoconductive layers; Charge-generation layers or charge-transporting layers; Additives therefor; Binders therefor characterised by the photoconductive material being inorganic and not being incorporated in a bonding material, e.g. vacuum deposited
- G03G5/08207—Selenium-based
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S101/00—Printing
- Y10S101/37—Printing employing electrostatic force
Definitions
- This invention relates to photography.
- An object of the invention is to improve methods of photography and to provide improved means and devices for use in photography.
- the invention comprises the features of construction, combination of elements, arrangement of parts, and methods of manufacture and operation referred to above or which will be brought out and exemplified in the disclosure hereinafter set forth, including the illustration in the drawing.
- Figure 1 is a section through a photographic plate according to my invention and illustrates a preferred method of applying an electric charge to it preparatory to photographic exposure;
- Figures 2, 2a and 2b illustrate three methods of photographically exposing the plate
- Figures 3 and 4 show a method of developing the electrostatic latent image produced on the plate by the preceding steps
- Figure 5 shows a method of transferring the image to a sheet of suitable material such as paper
- Figures 6 and 'l illustrate methods of fixing the image onto the sheet
- Figure 8 illustrates a modified means for charging and exposing the photographic plate
- Figure 9 shows another method of developing the image
- Figure 10 is an enlargement of a half-tone produced by the process.
- a feature of the present invention resides in the use of photoelectric or photoconductive materials for photographic purposes.
- the invention involves the use of materials which are insulators in the dark but which become partial conductors when illuminated. These materials respond to light, being slightly conductive whenever they a-re illuminated and again becoming insulating when the light is cut off. They can be called photoconductive insulating materials.
- the photoconductive insulating material is used to control electric charges in such a way as to produce an electrostatic latent image (so named by its analogy to the ordinary photographic latent image).
- the electrostatic latent image is then developed to make a visible picture as will be more fully described in the following detailed specification.
- FIG. l shows a cross-section of a photographic plate 2E] according to the invention comprising a thin layer 2l of photcconductive insulating material bonded to a metal plate 22.
- any one of a variety of photoconductive insulating materials may be used for layer 2i. Following are a few of the materials which I have found suitable: (1) sulfur, (2) anthracene, (3) anthraquinone, (4) melted mixtures of sulfur and selenium with the sulfur predominating, (5) melted mixtures of sulfur with up to a few percent of anthracene, (6) the compound formed by heating and melting together sulfur and anthracene in proportions of about 1 part sulfur to three parts anthracene by weight, the heating being continued until reaction is complete, (7) linseed oil boiled with sulfur and dried in a thin layer.
- photoconductive materials having insulating characteristics in the dark may also be used.
- the plate 22 may be of almost any suitable metal which does not deleteriously react with the photoconductor used. Zinc or aluminum plates are suitable for sulfur and anthracene layers. Brass may also be used. The surface of the metal may be etched to improve the adherence of the photoconductive layer.
- Sulfur coated plates may be prepared by placing a few crystals of pure sulfur onto the etched surface of the metal plate and heating the plate until the sulfur melts, then flowing the sulfur uniformly over the surface of the plate and allowing any excess to run oif, and cooling the plate to solidify the layer. If desired the layer can be made thinner and smoothed with fine emery paper after it has solidified, finishing with a polishing powder such as chalk.
- Anthracene and anthraquinone coated plates may be made by melting the material onto an etched metal plate and quickly cooling the plate in cold water, whereby a thin glossy layer is obtained on the plate.
- a cover spaced slightly from the metal plate so as to preserve a nearly saturated vapor atmosphere adjacent the surface.
- Another method is to cover a shallow dish containing anthracene or anthraquinone with a metal plate and heat to evaporate the material and condense it onto the metal plate, the heating being continued until the material sinters or fuses to the metal plate, the assembly then being allowed to cool slowly.
- the other materials can be made into layers by melting or spreading onto suitable surfaces, the procedure in each case depending upon the nature of the material used.
- the materials described above are all insulators. Sulfur, for example, is one of the best insulators known. However, all of the materials are of insulating character. For example, if any of them is made into a thin layer and an electric charge is applied on one side of the layer it will be substantially prevented from passing through the layer to the other side while the layer remains unilluminated. Hence such layers will hold an electric charge for a length of time sufficient for the production and utilization of an electrostatic latent image as described herein.
- photoconductive insulating materials are to be distinguished from the semi-conductors commonly used in photoelectric cells, such as cuprous oxide or the metallic variety of selenium. 'Ihe semi-conductors, while of better conductivity in the light than in the dark, will not hold an electrostatic charge on their surface even in the dark. This can be demonstrated by frictionally rubbing the surface of one of these semiconductors with a cloth or brush and then immediately dusting the surface with an electroscopic powder, such as lycopodium powder. None of the powder will adhere by electrostatic attraction, indicating that any charge developed by rubbing has immediately drained olf through the layer.
- anthracene appears to have the highest photoelectric conductivity when exposed to incandescent light, such as the 4light from an Eastman Photofiood lamp.
- Anthraquinone and sulfur appear to be next in sensitivity in the order named.
- the sensitivity varies with the wave length of the light source used. Sulfur, for example, has its maximum sensitivity at about 4700 Angstroms, that is, in the blue-violet part of the spectrum.
- Anthracene appears to have greater sensitivity to rays in the region of the wave length of green light.
- Other materials may be more conductive under ultra-violet radiation,
- the layers should preferably in all cases be made quite thin, such as in the order of a thousandth to a few hundredths of an inch thick. Thicker layers may sometimes be used, it being preferable, however, to have the layer thin enough to allow light to penetrate entirely through the layer during exposure.
- the layer may be continuous and glassy in appearance or may be somewhat crystalline in nature. Or it may be discontinuous-that is, made up of a multiplicity of tiny individual areas of photoconductive insulating material, or the material may be formed into a more or less porous or pitted layer.
- Figures 2, 2a and 2b show three alternative methods of exposure.
- the plate 2@ is secured in position in the back of camera 2Q whereby the image of the original 25 is focussed on the layer 2 I.
- the exposure may require from a few seconds to two or three minutes depending on the sensitivity of the layer used and the intensity of illumination.
- Original 25 may be a sheet of paper carrying printed or typewritten matter, or a drawing, for example, although other things may be photographed such as 3- dimensional objects, for example.
- the sources of illumination are illustrated as incandescent lamps 26, although other sources (such as sunlight or ultra-violet lamps) may also be used depending on the character of the object to be illuminated and the wave lengths at which the layer 2l has the greatest response.
- which are illuminated by the image are, for the time during which they are illuminated, rendered more conductive.
- This allows the electric charge, which has been held on the front surface of the layer to drain off the illuminated areas of the layer through the layer to the metal plate 22.
- the unilluminated areas (such as black letters corresponding to printing on original sheet 25) retain their charge or a substantial part of it throughout the exposure period, Thus, the electric charge will remain where there are black areas in the picture and will be drained off the white areas.
- Figure 2a illustrates another method of exposure suitable for use where the original is a transparency such as an ordinary photographic film, or a translucent material such as tracing paper or ordinary paper carrying an image in the form of opaque or semi-opaque lines or areas.
- the original 21 carrying the image 28 on its surface is placed against the surface of layer 2l and the assembly exposed to light from source 26. Exposure for a fraction of a second up to a few seconds will ordinarily be suflicient.
- Figure 2b shows a method for use where the original is recorded on a small film or lantern slide 30, e. g. microfilm or motion picture film.
- the original is placed in a projector 29 which projects the image on layer 2
- the time of exposure may preferably be so regulated that the most brightly illuminated areas will lose somewhat less than its entire charge and the areas which are illuminated only half so brightly will lose less of their charge, such as approximately half of it.
- each infinitesimal area of layer 2l as a charged condenser with its plates connected together through a resistance.
- Each condenser-resistance combination is in parallel with a large number of other condenser-resistance combinations having various resistance values.
- the discharging curve (charge vs. time) of a condenser through a resistance slopes downward from maximum charge and then iiattens out so as to approach asymptotically the horizontal line representing Zero charge.
- the slopes of the curves for different elements will vary but they all approach Zero charge. Hence, if exposure is continued for too long all areas will become discharged and very little contrast will be obtained.
- the exposure be stopped while the discharging rate is still on the steeper part of the charge vs. time curve.
- the time may, of course, vary from a fraction of a second to several minutes depending upon the characteristics of the photoelectric material and the intensity of light.
- the exposure time is not critical.
- the image may be developed or made visible as shown in Figures 3 and 4.
- the exposed plate is removed from the camera or other exposure device in a dark or dimly lighted room and laid face up on a table where it is sprinkled with a fine dust or powder Si from a can 35. having a cloth or fine wire screen 33 closing its mouth (see Figure 3).
- a fine dust or powder Si from a can 35. having a cloth or fine wire screen 33 closing its mouth (see Figure 3).
- Pulverized resins of all varities are very satisfactory, the kind being preferred which can be melted or made adhesive by heating.
- I have successfully used finely pulverized gum copal, gum sandarac, ordinary rosin, sealing wax, cumarone-indene resin, the treated pine resin sold under the trade-mark Vinsol resin, and various other synthetic and natural resins.
- I-Iard waxes capable of reduction to powder are also suitable.
- such diverse materials as dyed lycopodium powder, talcum powder, sulfur, minium, carbon dust and aluminum bronze powder have been used successfully.
- Powdered dyes may also be used, or the resin or other powder used may be dyed any color desired.
- Vinsol resin or gum copal may be melted with a small proportion of nigrosine dye, cooled and pulverized to give a dark colored powder.
- Lycopodium powder is naturally of a generally spherical shape.
- the resins or waxes can be made into a spherical powder by spraying the molten resin or wax from an atomizer into a cold chamber in which the spherical droplets will harden before coming into contact wtih other particles.
- Another method is to sprinkle the pulverized resin or wax through a heated zone where the particles momentarily melt and assume a rounded form and then harden.
- the dusted plate is then subjected to a gentle draft of air by blowing the breath on it or directing the air from the nozzle of a suitable blower 34 against the dusted surface to blow olf all loose powder not held on the surface by electrostatic attraction ( Figure 4).
- the dusting and blowing olf of the layer may be performed in one step by blowing the dust against the layer with a draft of air from a dust atomizer or other blower device.
- the dust may in some cases itself be given an electrostatic charge by friction or by discharging electricity through it, the sign of the charge preferably being opposite to that on the electrostatic latent image to improve the adherence of the powder. If the charge is of the same sign a negative image will result i. e. the powder will not deposit on the charged areas of the layer but will deposit on the uncharged areas.
- the visible image produced by the dust deposit can be xed or made permanent in one of several ways depending on the type of powder used and the result desired.
- the procedure of Figure 5 may be followed.
- the sheet material 35 is carefully laid on the surface of layer 2
- an adhesive to the surface of sheet 36 prior to the making of the transfer. Plain water or other liquids are often satisfactory, especially with paper sheets. Wax, parafn or other soft or sticky substances also may be used.
- the powder cr dye used is soluble or partly soluble in water or other liquid and the liquid is used to wet the sheet prior to transfer the image will become permanent on the sheet as soon as the liquid evaporates, thus resulting in a finished ccpy.
- the powder will in some cases be sufciently embedded by pressure to produce a fairly permanent print.
- FIG. 6 he preferred method of fixing the image is shown in Figure 6, however.
- This method is suitable where a resin or wax powder is used in the dusting process or where the sheet 36 is coated or impregnated with resin or wax prior to transfer of the image.
- the sheet 36 is heated momentarily to a temperature at which the resin or wax will melt or become adhesive thereby permanently aiixing the image to the sheet.
- the heating may be accomplished b-y a heat radiating electric resistance element 39, for example, as shown in Figure 6.
- Figure 7 shows another method of fixing the image which comprises spraying the surface of the sheet 36 carrying the dust image with a xative lacquer by atomizer 40.
- Another advantage is that the process yields directly readable copies of written or printed matter with the use of an ordinary camera lens or by contact printing with the printed side against the sensitive plate, rather than yielding a mirror image.
- Figure 8 shows another method of charging the surface of photo-conductive insulating layer 2l.
- coated with a transparent sputtered metal layer 42 is placed parallel to layer 2'I near its surface with the metal layer 42 nearest the layer 2i.
- Metal lm 42 and metal backing plate Z2 are connected to the opposite potential terminals 43, 44 of a high voltage source d5.
- Source 45 may be any suitable high voltage supply such as a multi-cell battery, an electrostatic generator or a transformer-rectifier system. I have found a transformer-rectifier circuit delivering about 1300 volts D. C. to be suitable.
- the layer 2l is illuminated uniformly, as by lamp 45, while the voltage source is connected. This allows a charge to now to the front surface of layer 2
- the plate 20 may now be exposed photographically as previously described.
- the layer may be charged as just described, for example by connecting the positive terminal of the source i5 to the plate 22 and the negative terminal to layer 42, resulting in a positive charge on layer 2 I
- the lamp 46 is then extinguished and the assembly is exposed to an image projected thereon by lens t1.
- the connections to the source d are reversed.
- the result is that the areas on layer 2
- the first charging step is eliminated and the layer is charged during emosure to the image (by lens 41) resulting in an electrostatic latent image in which the light areas of the image are charged instead of the unilluminated areas. If such an image is dusted with black powder the result will be a negative instead of a positive. If it is dusted with a white powder and the powder image is transferred to a black background a positive will result. If desired, a thin sheet of insulating material may be interposed between layers 2l and 42 in Figure 8, instead of an air space.
- a thin sheet of insulating material 48 may be laid on top of the layer 2l carrying an electrostatic latent image and the powder deposited on the surface of sheet d8 as shown in Figure 9. The dust will then adhere to layer 48 opposite to the charged parts of layer 2l.
- My process may also be adapted to the production of masters for the making of multiple copies by lithographic or typographical methods.
- Lithographie reproduction For production of masters for offset lithography the rst steps in the process may be the same as described in connection with Figures 1 to 4, inclusive.
- the dusting powder must be selected to be a material which is wetted by lithographic ink.
- Many of the resins mentioned are suitable for this purpose, such as copal, sandarac, VinsoL and rosin as well as the hard waxes. While these are ordinarily satisfactory it may in some cases be preferred to compound the resin with a small amount of lithographic crayon material or to add some fatty acid or fatty material to improve the adherence of the image to the lithographic plate.
- the sheet 36 is a lithographic sheet such as a specially prepared etched aluminum or Zinc plate of the type commonly used for offset lithography.
- the newly-developed paper or parchment-like lithographic sheets known commercially as Duplimat sheets (for use on the Multilith machines) can also be used.
- the resin or wax image is melted onto the sheet by heating as shown in Figure 6. Any number of copies can then be produced from such a sheet by oifset lithography, the lithographic ink adhering to the letters but not to the background, when the sheet is wetted with water.
- the lithographic plate preferably etched aluminum or zinc is coated with a thin layer of anthracene (or anthraquinone) to produce an electro-photographic plate, by one of the coating methods already described.
- the layer is then exposed and dusted with resin dust as previously described.
- the plate is heated carefully to a temperature at which the anthracene evaporates off leaving the resin image on the plate. If the resin has already melted it is merely necessary to cool the plate to solidify the resin image onto the surface. If the resin is of a higher melting point the heating is continued until the resin melts.
- This method has the .advantage that all of the resin which becomes attached to the electrostatic latent image is utilized in the finished lithographic plate. In this process it may be necessary to use a photostat camera having a 45 degree mirror in combination with the camera lens, or to modify the contact printing process by placing the back of the original sheet against the photoconductive layer so that a direct image will be produced on the layer instead of a mirrorreverse image.
- Typography My process can also be used for producing typographical printing cuts or relief printing surfaces. This can be accomplished by producing a photoconductive insulating layer of anthracene or anthraquinone on a block of metal such as zinc or copper, exposing dusting with resin powder to form the image in mirrorreverse, heating to drive olf the antrracene (or anthraquinone) and to melt the resin onto the metal surface, cooling and then etching the plate in acid to etch away the metal not covered by the resin and thereby leave the image in raised relief.
- the cut thus produced can be used for printing in the usual way.
- Hectcgraphic reproduction may also ce used for the preparation of masters for hectograph copying.
- a so-called hectograph pan in which a gelatin compound is disposed in a layer.
- the dust image in such case is formed of a strong dye, such as crystal violet, or a dye compounded with gelatin and reduced to a fine dry powder.
- the dust image, formed electrophotographically as heretofore described is transferred to the surface of the gelatin compound in the pan by pressing the dusted eelctrophotographic plate against the surface of the layer so that the dyestuff is absorbed in the surface of the gelatin compound. Then copies can be produced by pressing sheets of copy paper on the gelatin compound surface one at a time. In such a process the original photographic exposure should be such that a mirror-reverse is produced on the gelatin compound when the dust is transferred to it.
- the same principle can also be extended to the process in which the gelatin composition is carried in a thin coating on a backing sheet, instead of being placed in a pan, the copies being run olf in a rotary cylinder copying machine.
- the dusting powder should be an alcohol soluble dye or dye composition.
- Such dyes as the basic dyestuffs rhodamine, Victoria blue, Victoria green, crystal violet, nigrosine, methyl violet, induline may be employed either alone or compounded with an alcohol soluble resin.
- the dust image may be transferred to a paper sheet as heretofore described and melted onto the paper Aor adhered to it by wetting'slightly with alcohol.
- Copies can then be run offv by attaching the master thus formed to the drum of a rotary duplicator and running through blank sheets moistened with alcohol or other spirit solvent, each of which picks up some of the dye.
- pure dye is used for the dusting powder it may be transferred to a specially prepared sheet having an adhesive on its surface (such as resin which can be melted to make the dye stick to the sheet).
- the dyed resin can be melted directly onto the photoconductive insulating layer and the layer itself used as a master from which copies can be run off. If anthracene or anthroquinone or some other readily volatilized photoconductive layer is used it may be evaporated and .the image melted directly onto the metal backing.
- the picture thus produced is really a form of half tone and as such may be used for lithographic or hectographic reproduction of pictorial subjects and for the production of half-tone cuts.
- Figure 10 is a highly magnified view of a dusted electrostatic image of a pictorial subject, the part reproduced being an enlargement of a human eye. It will be noted that in the darker parts of the image such as the eyelash and pupil the dust particles 3i are clustered close together, while in .the lighter parts the particles are more widely separated, and in the white parts no particles adhere at all.
- the particles are of fusible resin they can be melted onto the backing and each will serve as a tiny printing area in a lithographie or hectographic process. In the case of half-tone cuts the resin areas protect the backing metal while the surrounding uncovered areas are etched away.
- My process is also applicable to the making of half-tones by conventional methods such as by using a half-tone screen in the camera or by photographing a half-tone original.
- Another type of electrophotographic sheet is made by coating a sheet of paper with a layer of conductive material such as bronze or carbon powder held in a binder, the photoconductive insulating material being applied to .the conductive surface or impregnated into the sheet.
- a layer of conductive material such as bronze or carbon powder held in a binder
- the conductive layer may be sprayed or painted onto the paper or rolled into the surface before applying the photoconductive material and in a some cases afterward.
- the process can also be used for multi-color vphotography by exposing a plate first to the original through light filters which enable one color to be recorded, and then developing with colored powder to produce a copy of that color, then repeating for each other color and superimposing the dust images on the same copy sheet.
- the sensitized plates may be used over and over again it merely being necessary to brush off the surface and recharge it before each exposure.
- the material forming the layer should preferably be of a type which is not highly reactive and which is non-hygroscopic, since moisture in the layer will destroy its insulating properties. All of the materials described herein are of this type.
- the plate need not be stored in the dark as is required with ordinary photographic plates, since the plate is prepared for exposure by charging the surface each time immediately before exposure.
- the present process is suitable for copying letters, drawings, printed matter, books, typewritten matter, enlarging matter from films such as microfilm, pictorial photography, color photography, half-tone production and as a means for producing masters for lithographic, hectographic or typographical production of multiple copies.
- the method of making a photographic reproduction which comprises applying a uniform layer of photoconductive insulating material to a plane conductive backing, developing a strong electrostatic charge on the surface of said layer by rubbing said surface, exposing the layer to a light image whereby to render the illuminated areas thereof sufficiently conductive to drain off a substantial proportion of said charge to said conductive backing, then bringing a ne dust into contact with the surface whereby to form an electro-static dust deposit on the areas of said surface remaining charged after the exposure, then blowing off excess dust not electrostatically held on said surface, whereby a dust image will be produced in which the dark areas of the original image will be reproduced as dust deposit areas.
- the method of making a photographic reproduction which comprises applying a uniform layer of photoconductive insulating material to a plane conductive backing, developing a strong electrostatic charge on the surface of said layer by rubbing said surface, exposing the layer to a light image whereby to render the illuminated areas thereof sufficiently conductive to drain off a substantial proportion of said charge to said conductive backing, then bringing a fine dust into contact with the surface whereby to form an electrostatic dust deposit on the areas of said surface remaining charged after the exposure, then blowing off excess dust not electrostatically held on said surface, whereby a dust image will be produced in which the dark areas of the original image will be reproduced as dust deposit areas, then transferring the dust image to a sheet of paper by pressing said pap-er against said surface.
- the method of making a direct-positive photographic reproduction which comprises rubbing the surface of a layer of photoconductive insulating material to produce an electrostatic charge on said surface, then exposing the layer to a light image while simultaneously engaging the side of said layer opposite said charged surface with a conductive backing whereby the illuminated portions of said layer will have their conductivity increased by the illumination and will allow at least part of said charge to drain off to said conductive backing in said illuminated areas, then bringing a dark-colored powder into contact with said surface whereby to form a dust deposit thereon, removing the dust not held onto said surface by electrostatic attraction by passing an air stream over the surface, whereby a dust image is produced on said surface, transferring said dust image to a sheet of paper by pressing said sheet against said surface carrying the dust image and afiixing said dust to said paper.
- the method of photography which comprises charging the surface of a layer of photoconductive insulating material with an electric charge, exposing the layer photographically to a light image for a period sufficient to substantially discharge the areas receiving the highest intensity of illumination while at the same time engaging the opposite surface of said layer with a conductive backing, and then dusting the charged surface with a ne electroscopic powder to develop the charge image, and subsequently fixing the powder in the configuration in which it is deposited.
- the method of photography which comprises charging the surface of a layer of photoconductive insulating material with an electric charge, exposing the charged layer photographically Vwhile maintaining a conductive backing in contact with the surface of said layer opposite to said charged surface, and then dusting the charged surface with an electrostatically attractable finely divided material to develop the charge image.
- the method of photography which comprises applying a strong electric field through a layer of photoconductive insulating material and simultaneously projecting a light image onto said layer, said light image comprising a pattern of light and shadow to be recorded, whereby electricity will ow through said layer in the illuminated parts thereof, thereby producing an electrostatic charge image at a surface thereof, shutting off the illumination and storing said electrostatic charge image on said surface by protecting said layer from illumination subsequent to exposure to the light image, and subsequently developing said image by dusting said stored charge image with an electroscopic powder.
- the method of printing a design on a surface which comprises producing an electrostatic charge pattern on the surface of a layer of insulating material, depositing a powder on said pattern whereby to produce a corresponding powder design, and then transferring the powder design to a second surface by pressing said surfaces together, at least one of the materials comprising said powder and said second surface being thermoadhesive in nature, and permanently aflixing said powder design to said second surface by heating said surface and design until said thermoadhesive material becomes adhesive.
- the method of making a photographic reproduction which comprises applying an electric field through a layer of photoconductive insulating material and projecting an image onto said layer whereby a flow of electricity will take place through said layer producing an electrostatic latent image at a surface thereof, then depositing dust particles on said surface where said particles will adhere in a distribution varying in density with the intensity of the charge at the various parts of the surface.
- a device for electrophotography comprising a pair of layers of conductive material disposed in spaced parallel relation, a thin layer of photoconductive insulating material attached to one of said conductive layers on its surface nearest the other conductive layer, said photcconductive layer being spaced from said other conductive layer whereby it is insulated therefrom; one of said conductive layers being permeable to light, means for projecting a light image onto said photoconductive layer by projecting light through said light-permeable layer, and means for applying a high-voltage potential difference between said pair of conductive layers, whereby an electrostatic latent image corresponding to said light image may be produced on the exposed surface of said photoconductive insulating layer by application of said potential diiference and projecting said light image thereon, said layers being exposed to air at atmospheric pressure and said photoconductive insulating material being nonhygroscopic.
- a device for reproducing images comprising a layer of photoconductive material of the type having a high insulating value in the dark, a contiguous contacting layer of conductive material engaging one surface of said photoconductive insulating layer, means for applying an electric iield through saidi phbtoconductive insulating layer and means for projecting a predetermined light image comprising a pattern of light and shadow to be recorded onto said photoconductive insulating layer, said layer of photoconductive material being exposed to air at atmospheric pressure, said material being non-hygroscopic.
- An electrophotographic camera comprising a layer of photoconductive insulating material affixed to a conductive backing, a transparent conductive layer spaced yand insulated from the front surface of said photoconductive insulating layer and a lens supported in front of said layers in a position to project a light image onto said photoconductive layer through said transparent conductive layer, and means to apply a high voltage potential difference between said transparent conductive layer and said conductive backing.
- An electrophoto camera comprising a light tight box having a lens and shutter for admitting a light image, a layer of photoconductive insulating material and a backing supporting said layer in a position within said box to receive an image projected thereon by said lens, spaced parallel conductive electrodes in front of and behind said layer, a high voltage source and means for connecting the terminals thereof to said electrodes to apply a high potential difference between said electrodes, said electrode in front of said layer being light permeable whereby said image may be projected therethrough, and an electric flood lamp mounted within said box for flooding said layer with light at the will of the operator.
- the method of producing an electrostatic latent image at the surface of a layer of photoconductive insulating material having a conductive backing which comprises charging the front surface of said layer with a distributed electrostatic charge and subsequently exposing said layer to a light image comprising a pattern of light and shadow to be recorded, whereby at least part of said charge will drain off through said layer to said conductive backing in the illuminated areas of said layer leaving an electrostatic charge image on said layer, and then cutting oif said illumination.
- rIfhe method of recording a light image comprising a pattern of light and shadow to be recorded which method comprises producing and storing an electrostatic latent image corresponding to said light image by creating a strong electric eld through a layer of photoconductive insulating material and exposing said layer to said light image to be recorded, whereby electricity will flow through said layer in the illuminated areas thereof thereby changing the charge condition of the illuminated areas at a surface of said layer thus producing said electrostatic latent image thereat, then cutting off the illumination of the image field of said layer to restore the normal dark insulating value to all parts of said layer in the image field and thereby entrap said electrostatic latent image at said surface for an indefinite period.
- the method of recording a light image comprising a pattern of light and 'shadow to be recorded comprises producing and storing an electrostatic latent image corresponding to said light image by creating a strong electric field through a layer of photoconductive insulating material and exposing said layer to said light image to be recorded, whereby electricity will flow through said layer in the illuminated areas thereof thereby changing the charge condition of the illuminated areas at a surface of said layer thus producing said electrostatic latent image thereat, then cutting off the illumination of the image field of said layer to restore the normal dark insulating value to all parts of said layer in the image eld and thereby entrap said electrostatic latent image at said surface for an indefinite period, and subsequently depositing a finely divided material on said electrostatic latent image to form a corresponding image out of said material.
- the method of photography which comprises applying a strong electric field through a layer of photoconductive insulating material and simultaneously projecting a light image onto said layer, said light image comprising a pattern of light and shadow to be recorded, whereby electricity will flow through said layer in the illuminated part thereof, thereby producing an electrostatic charge image at a surface thereof, and then depositing a finely divided electrostatically attractable material on said image to make the image Visible.
- the method of electrographic recording which comprises producing an electrostatic latent image at the surface of a layer of insulating material, developing the image by depositing an electrostatically attractable iinely divided material thereon, then transferring the material in the image configuration to a second surface by pressure contact and aflixing the transferred material to the second surface.
- the method of printing a design on a surface which comprises producing an electrostatic charge pattern on the surface of a layer of insulating material, depositing a finely divided material on said pattern whereby to render said pattern visible, and then transferring said material to a second surface and permanently afxing said material to said second surface in the configuration of said pattern.
- the method of applying a design to a surface which comprises producing an electrostatic charge pattern at the surface of a layer of insulating material, depositing a powder on said pattern whereby to produce a corresponding powder design by the electrostatic attraction of said pattern for said powder, and bringing a second surface having an adhesive material thereon into contact with the powder design whereby to transfer said powder design to said second surface.
- the method of producing a half-tone picture having varied shadings of light and shadow which comprises producing a distribution of individual solid particles of fusible material on a surface in a particle density corresponding to the degree of shading desired on each part of the surface and then aixing said particles to said surface, by melting said particles thereon to produce a half-tone dot from each of said particles.
- the method of producing a half-tone picture having varied shadings of light and shadow which comprises producing an electrostatic charge image, producing under the iniiuence thereof a distribution of individual solid particles of fusible material on a surface in a particle density corresponding to the charge on each part of said electrostatic image and then aixing said particles to said surface by melting said particles thereon to produce a half-tone dot from each of said particles.
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Description
Oct. s, 1942. F, CARL-50N 2,297,691
-ELECTROPHOTOGRAPHY Filed April 44. 1939 INVENTOR Patented Oct. 6, 1942 i UNITED STATES PATELNT FFICE.
ELECTROPHOTOGRAPHY Chester F. Carlson, Jackson Heights, N. Y.
Application April 4, 1939, Serial No. 265,925
27 Claims.
This invention relates to photography.
An object of the invention is to improve methods of photography and to provide improved means and devices for use in photography.
Other objects of the invention will be apparent from the following description and accompanying drawing taken in connection with the appended claims.
The invention comprises the features of construction, combination of elements, arrangement of parts, and methods of manufacture and operation referred to above or which will be brought out and exemplified in the disclosure hereinafter set forth, including the illustration in the drawing.
In the drawing:
Figure 1 is a section through a photographic plate according to my invention and illustrates a preferred method of applying an electric charge to it preparatory to photographic exposure;
Figures 2, 2a and 2b illustrate three methods of photographically exposing the plate;
Figures 3 and 4 show a method of developing the electrostatic latent image produced on the plate by the preceding steps;
Figure 5 shows a method of transferring the image to a sheet of suitable material such as paper;
Figures 6 and 'l illustrate methods of fixing the image onto the sheet;
Figure 8 illustrates a modified means for charging and exposing the photographic plate;
Figure 9 shows another method of developing the image; and
Figure 10 is an enlargement of a half-tone produced by the process.
A feature of the present invention resides in the use of photoelectric or photoconductive materials for photographic purposes. In its preferred form the invention involves the use of materials which are insulators in the dark but which become partial conductors when illuminated. These materials respond to light, being slightly conductive whenever they a-re illuminated and again becoming insulating when the light is cut off. They can be called photoconductive insulating materials.
In carrying out the invention the photoconductive insulating material is used to control electric charges in such a way as to produce an electrostatic latent image (so named by its analogy to the ordinary photographic latent image). The electrostatic latent image is then developed to make a visible picture as will be more fully described in the following detailed specification.
While a preferred embodiment of the invention is described herein, it is contemplated that considerable variation may be made in the method of procedure and the construction of parts without departing from the spirit of the invention. In the following description and in the claims, parts will be identified by specific names for convenience, but they are intended to be as generic in their application to similar parts as the art will permit Referring to the drawing Figure l shows a cross-section of a photographic plate 2E] according to the invention comprising a thin layer 2l of photcconductive insulating material bonded to a metal plate 22.
Any one of a variety of photoconductive insulating materials may be used for layer 2i. Following are a few of the materials which I have found suitable: (1) sulfur, (2) anthracene, (3) anthraquinone, (4) melted mixtures of sulfur and selenium with the sulfur predominating, (5) melted mixtures of sulfur with up to a few percent of anthracene, (6) the compound formed by heating and melting together sulfur and anthracene in proportions of about 1 part sulfur to three parts anthracene by weight, the heating being continued until reaction is complete, (7) linseed oil boiled with sulfur and dried in a thin layer.
Other photoconductive materials having insulating characteristics in the dark may also be used.
The plate 22 may be of almost any suitable metal which does not deleteriously react with the photoconductor used. Zinc or aluminum plates are suitable for sulfur and anthracene layers. Brass may also be used. The surface of the metal may be etched to improve the adherence of the photoconductive layer.
Sulfur coated plates may be prepared by placing a few crystals of pure sulfur onto the etched surface of the metal plate and heating the plate until the sulfur melts, then flowing the sulfur uniformly over the surface of the plate and allowing any excess to run oif, and cooling the plate to solidify the layer. If desired the layer can be made thinner and smoothed with fine emery paper after it has solidified, finishing with a polishing powder such as chalk.
Anthracene and anthraquinone coated plates may be made by melting the material onto an etched metal plate and quickly cooling the plate in cold water, whereby a thin glossy layer is obtained on the plate. However, due to the strong tendency of these materials to sublime or evaporate when heated to their melting point it is necessary to provide a cover spaced slightly from the metal plate so as to preserve a nearly saturated vapor atmosphere adjacent the surface.
Another method is to cover a shallow dish containing anthracene or anthraquinone with a metal plate and heat to evaporate the material and condense it onto the metal plate, the heating being continued until the material sinters or fuses to the metal plate, the assembly then being allowed to cool slowly.
The other materials can be made into layers by melting or spreading onto suitable surfaces, the procedure in each case depending upon the nature of the material used.
The materials described above are all insulators. Sulfur, for example, is one of the best insulators known. However, all of the materials are of insulating character. For example, if any of them is made into a thin layer and an electric charge is applied on one side of the layer it will be substantially prevented from passing through the layer to the other side while the layer remains unilluminated. Hence such layers will hold an electric charge for a length of time sufficient for the production and utilization of an electrostatic latent image as described herein.
These photoconductive insulating materials are to be distinguished from the semi-conductors commonly used in photoelectric cells, such as cuprous oxide or the metallic variety of selenium. 'Ihe semi-conductors, while of better conductivity in the light than in the dark, will not hold an electrostatic charge on their surface even in the dark. This can be demonstrated by frictionally rubbing the surface of one of these semiconductors with a cloth or brush and then immediately dusting the surface with an electroscopic powder, such as lycopodium powder. None of the powder will adhere by electrostatic attraction, indicating that any charge developed by rubbing has immediately drained olf through the layer.
Of the insulating materials, anthracene appears to have the highest photoelectric conductivity when exposed to incandescent light, such as the 4light from an Eastman Photofiood lamp. Anthraquinone and sulfur appear to be next in sensitivity in the order named. However, the sensitivity varies with the wave length of the light source used. Sulfur, for example, has its maximum sensitivity at about 4700 Angstroms, that is, in the blue-violet part of the spectrum. Anthracene appears to have greater sensitivity to rays in the region of the wave length of green light. Other materials may be more conductive under ultra-violet radiation,
The layers should preferably in all cases be made quite thin, such as in the order of a thousandth to a few hundredths of an inch thick. Thicker layers may sometimes be used, it being preferable, however, to have the layer thin enough to allow light to penetrate entirely through the layer during exposure.
The layer may be continuous and glassy in appearance or may be somewhat crystalline in nature. Or it may be discontinuous-that is, made up of a multiplicity of tiny individual areas of photoconductive insulating material, or the material may be formed into a more or less porous or pitted layer.
Having discussed the nature and production of my novel photoelectric photographic plates we may again refer to Figure 1 and the succeeding figures for an understanding of a preferred method of carrying out my photographic process. In this preferred method the surface of the photoconductive insulating layer is first charged by rubbing it vigorously with a soft material such as a cotton or silk handkerchief 23 as indicated in Figure l. A soft brush or a fur may also be used. The layer should be rubbed in the dark so that it will be at its highest insulating value and hence will retain the charge uniformly distributed on its surface. In some cases, however, where photoelectric materials of low sensitivity are used it will be suicient to work in subdued light, total darkness not being required. By rubbing the surface of the layer vigorously in the manner described a strong and uniformly distributed electric charge is developed at the surface and remains held on the insulating surface while the layer is kept in comparative darkness. Since the backing plate 22 is ordinarily grounded by contact with other surfaces there will exist a high potential difference between the charged surface and the plate resulting in a strong electric field through layer 2l.
The layer is now immediately exposed to the light image or pattern which it is desired to reproduce, Figures 2, 2a and 2b show three alternative methods of exposure.
According to Figure 2, for example, the plate 2@ is secured in position in the back of camera 2Q whereby the image of the original 25 is focussed on the layer 2 I. The exposure may require from a few seconds to two or three minutes depending on the sensitivity of the layer used and the intensity of illumination. Original 25 may be a sheet of paper carrying printed or typewritten matter, or a drawing, for example, although other things may be photographed such as 3- dimensional objects, for example.
The sources of illumination are illustrated as incandescent lamps 26, although other sources (such as sunlight or ultra-violet lamps) may also be used depending on the character of the object to be illuminated and the wave lengths at which the layer 2l has the greatest response.
By the exposure, the parts of the layer 2| which are illuminated by the image are, for the time during which they are illuminated, rendered more conductive. This allows the electric charge, which has been held on the front surface of the layer to drain off the illuminated areas of the layer through the layer to the metal plate 22. During exposure the unilluminated areas (such as black letters corresponding to printing on original sheet 25) retain their charge or a substantial part of it throughout the exposure period, Thus, the electric charge will remain where there are black areas in the picture and will be drained off the white areas.
There is thus obtained on layer 2l an electrostatic latent image corresponding to the drawing, printing or other configuration on the original 25.
Figure 2a illustrates another method of exposure suitable for use where the original is a transparency such as an ordinary photographic film, or a translucent material such as tracing paper or ordinary paper carrying an image in the form of opaque or semi-opaque lines or areas. The original 21 carrying the image 28 on its surface is placed against the surface of layer 2l and the assembly exposed to light from source 26. Exposure for a fraction of a second up to a few seconds will ordinarily be suflicient.
Ordinary drawings and typewritten letters may be copied in this way.
Figure 2b shows a method for use where the original is recorded on a small film or lantern slide 30, e. g. microfilm or motion picture film. In this case the original is placed in a projector 29 which projects the image on layer 2|.
In any of the exposure methods illustrated the time of exposure may preferably be so regulated that the most brightly illuminated areas will lose somewhat less than its entire charge and the areas which are illuminated only half so brightly will lose less of their charge, such as approximately half of it.
This may be better understood by considering each infinitesimal area of layer 2l as a charged condenser with its plates connected together through a resistance. Each condenser-resistance combination is in parallel with a large number of other condenser-resistance combinations having various resistance values. The discharging curve (charge vs. time) of a condenser through a resistance slopes downward from maximum charge and then iiattens out so as to approach asymptotically the horizontal line representing Zero charge. The slopes of the curves for different elements will vary but they all approach Zero charge. Hence, if exposure is continued for too long all areas will become discharged and very little contrast will be obtained. It is preferred, therefore, that the exposure be stopped while the discharging rate is still on the steeper part of the charge vs. time curve. The time may, of course, vary from a fraction of a second to several minutes depending upon the characteristics of the photoelectric material and the intensity of light. Moreover, where the contrast on the original is high, such as black lines on a white background, the exposure time is not critical.
Having exposed the plate in one of the manners shown in Figures 2, 2a and 2h so as to produce an electrostatic latent image thereon, the image may be developed or made visible as shown in Figures 3 and 4. The exposed plate is removed from the camera or other exposure device in a dark or dimly lighted room and laid face up on a table where it is sprinkled with a fine dust or powder Si from a can 35. having a cloth or fine wire screen 33 closing its mouth (see Figure 3). Almost any kind of powder can be used depending on the effect desired in the nished print. Pulverized resins of all varities are very satisfactory, the kind being preferred which can be melted or made adhesive by heating. I have successfully used finely pulverized gum copal, gum sandarac, ordinary rosin, sealing wax, cumarone-indene resin, the treated pine resin sold under the trade-mark Vinsol resin, and various other synthetic and natural resins. I-Iard waxes capable of reduction to powder are also suitable. Likewise such diverse materials as dyed lycopodium powder, talcum powder, sulfur, minium, carbon dust and aluminum bronze powder have been used successfully. Powdered dyes may also be used, or the resin or other powder used may be dyed any color desired. For example, Vinsol resin or gum copal may be melted with a small proportion of nigrosine dye, cooled and pulverized to give a dark colored powder.
It may sometimes be of advantage to use a powder in which the individual granules are generally spherical in shape since this appears to contribute to a more accurate distribution of the Fill powder according to the electric charge on the layer. Lycopodium powder is naturally of a generally spherical shape. The resins or waxes can be made into a spherical powder by spraying the molten resin or wax from an atomizer into a cold chamber in which the spherical droplets will harden before coming into contact wtih other particles. Another method is to sprinkle the pulverized resin or wax through a heated zone where the particles momentarily melt and assume a rounded form and then harden.
The dusted plate is then subjected to a gentle draft of air by blowing the breath on it or directing the air from the nozzle of a suitable blower 34 against the dusted surface to blow olf all loose powder not held on the surface by electrostatic attraction (Figure 4).
Wherever an electric charge remains on the surface, corresponding to the dark parts of the original image, the powder remains adhering to the surface by electric attraction, thus developing and making visible the picture 35 on the surface formerly present as an electrostatic latent image.
In some cases the dusting and blowing olf of the layer may be performed in one step by blowing the dust against the layer with a draft of air from a dust atomizer or other blower device. Likewise the dust may in some cases itself be given an electrostatic charge by friction or by discharging electricity through it, the sign of the charge preferably being opposite to that on the electrostatic latent image to improve the adherence of the powder. If the charge is of the same sign a negative image will result i. e. the powder will not deposit on the charged areas of the layer but will deposit on the uncharged areas.
In any case the visible image produced by the dust deposit can be xed or made permanent in one of several ways depending on the type of powder used and the result desired.
If it is desired to apply the image to paper, metal foil or other sheet material, for example, the procedure of Figure 5 may be followed. According to this method the sheet material 35 is carefully laid on the surface of layer 2| carrying the dust image 35 and is firmly pressed against the surface by a block 3'! carrying felt or sponge rubber pad 33. This will transfer a part of the powder to the surface of the sheet material, making the image visible thereon. In order to improve the transfer it is preferred to apply an adhesive to the surface of sheet 36 prior to the making of the transfer. Plain water or other liquids are often satisfactory, especially with paper sheets. Wax, parafn or other soft or sticky substances also may be used.
Where the powder cr dye used is soluble or partly soluble in water or other liquid and the liquid is used to wet the sheet prior to transfer the image will become permanent on the sheet as soon as the liquid evaporates, thus resulting in a finished ccpy.
Where wax or other soft or sticky substance is used the powder will in some cases be sufciently embedded by pressure to produce a fairly permanent print.
he preferred method of fixing the image is shown in Figure 6, however. This method is suitable where a resin or wax powder is used in the dusting process or where the sheet 36 is coated or impregnated with resin or wax prior to transfer of the image. According to this method the sheet 36 is heated momentarily to a temperature at which the resin or wax will melt or become adhesive thereby permanently aiixing the image to the sheet. The heating may be accomplished b-y a heat radiating electric resistance element 39, for example, as shown in Figure 6.
Figure 7 shows another method of fixing the image which comprises spraying the surface of the sheet 36 carrying the dust image with a xative lacquer by atomizer 40.
From the preceding description certain advantages of my process over ordinary photographic methods will be apparent. In the rst place the process yields a direct positive copy, instead of a negative. That is, upon exposure to the original and then dusting with a black or colored powder and transferring to a white sheet of paper, the areas which appeared dark on the original will be reproduced as black or colored areas on the copy, and the areas which were white on the original will also be white on the copy.
Another advantage is that the process yields directly readable copies of written or printed matter with the use of an ordinary camera lens or by contact printing with the printed side against the sensitive plate, rather than yielding a mirror image. This makes the process especially well adapted to direct reproduction of printed matter, drawings, typewritten matter and the like. For instance, if it is desired to reproduce a typewritten letter it may be copied either with the camera, as shown in Figure 2, or by contact printing as shown in Figure 2a, and the finished copy 36 (Figure 6 or 7) will be an exact black-letters-on-white-background duplicate of the original letter.
Figure 8 shows another method of charging the surface of photo-conductive insulating layer 2l. In this arrangement a transparent plate 4| coated with a transparent sputtered metal layer 42 is placed parallel to layer 2'I near its surface with the metal layer 42 nearest the layer 2i. Metal lm 42 and metal backing plate Z2 are connected to the opposite potential terminals 43, 44 of a high voltage source d5. Source 45 may be any suitable high voltage supply such as a multi-cell battery, an electrostatic generator or a transformer-rectifier system. I have found a transformer-rectifier circuit delivering about 1300 volts D. C. to be suitable.
The layer 2l is illuminated uniformly, as by lamp 45, while the voltage source is connected. This allows a charge to now to the front surface of layer 2|. the voltage source disconnected a charge will remain on layer 2 I. The plate 20 may now be exposed photographically as previously described.
According to another method the layer may be charged as just described, for example by connecting the positive terminal of the source i5 to the plate 22 and the negative terminal to layer 42, resulting in a positive charge on layer 2 I The lamp 46 is then extinguished and the assembly is exposed to an image projected thereon by lens t1. At the same time the connections to the source d are reversed. The result is that the areas on layer 2| which are illuminated by the image will discharge their positive charge and then become negatively charged from the voltage source. This will result in an electrostatic latent image in which the light parts of the image are negatively charged and the dark parts of the image positively charged.
If a dusting powder is used for the above layer If the lamp is now turned off and which already has a negative charge (due to fric tion) the dust particles will attach themselves strongly to the positively charged areas of the image and be repelled from the negative areas, thereby forming a very sharp image.
By another method of using the arrangement of Fig. 8 the first charging step is eliminated and the layer is charged during emosure to the image (by lens 41) resulting in an electrostatic latent image in which the light areas of the image are charged instead of the unilluminated areas. If such an image is dusted with black powder the result will be a negative instead of a positive. If it is dusted with a white powder and the powder image is transferred to a black background a positive will result. If desired, a thin sheet of insulating material may be interposed between layers 2l and 42 in Figure 8, instead of an air space.
In the dusting process, instead of applying the powder to the surface of layer 2| a thin sheet of insulating material 48 may be laid on top of the layer 2l carrying an electrostatic latent image and the powder deposited on the surface of sheet d8 as shown in Figure 9. The dust will then adhere to layer 48 opposite to the charged parts of layer 2l.
My process may also be adapted to the production of masters for the making of multiple copies by lithographic or typographical methods.
Lithographie reproduction For production of masters for offset lithography the rst steps in the process may be the same as described in connection with Figures 1 to 4, inclusive. However the dusting powder must be selected to be a material which is wetted by lithographic ink. Many of the resins mentioned are suitable for this purpose, such as copal, sandarac, VinsoL and rosin as well as the hard waxes. While these are ordinarily satisfactory it may in some cases be preferred to compound the resin with a small amount of lithographic crayon material or to add some fatty acid or fatty material to improve the adherence of the image to the lithographic plate.
After the dust image is formed on the electrophotographic plate as already described it is transferred as illustrated in Figure 5, but in this case the sheet 36 is a lithographic sheet such as a specially prepared etched aluminum or Zinc plate of the type commonly used for offset lithography. The newly-developed paper or parchment-like lithographic sheets known commercially as Duplimat sheets (for use on the Multilith machines) can also be used.
The resin or wax image is melted onto the sheet by heating as shown in Figure 6. Any number of copies can then be produced from such a sheet by oifset lithography, the lithographic ink adhering to the letters but not to the background, when the sheet is wetted with water.
According to another method the lithographic plate, preferably etched aluminum or zinc is coated with a thin layer of anthracene (or anthraquinone) to produce an electro-photographic plate, by one of the coating methods already described. The layer is then exposed and dusted with resin dust as previously described.
Then the plate is heated carefully to a temperature at which the anthracene evaporates off leaving the resin image on the plate. If the resin has already melted it is merely necessary to cool the plate to solidify the resin image onto the surface. If the resin is of a higher melting point the heating is continued until the resin melts. This method has the .advantage that all of the resin which becomes attached to the electrostatic latent image is utilized in the finished lithographic plate. In this process it may be necessary to use a photostat camera having a 45 degree mirror in combination with the camera lens, or to modify the contact printing process by placing the back of the original sheet against the photoconductive layer so that a direct image will be produced on the layer instead of a mirrorreverse image.
Typography My process can also be used for producing typographical printing cuts or relief printing surfaces. This can be accomplished by producing a photoconductive insulating layer of anthracene or anthraquinone on a block of metal such as zinc or copper, exposing dusting with resin powder to form the image in mirrorreverse, heating to drive olf the antrracene (or anthraquinone) and to melt the resin onto the metal surface, cooling and then etching the plate in acid to etch away the metal not covered by the resin and thereby leave the image in raised relief. The cut thus produced can be used for printing in the usual way.
Hectcgraphic reproduction The present invention may also ce used for the preparation of masters for hectograph copying. In one method use is made of a so-called hectograph pan in which a gelatin compound is disposed in a layer. The dust image in such case is formed of a strong dye, such as crystal violet, or a dye compounded with gelatin and reduced to a fine dry powder.
The dust image, formed electrophotographically as heretofore described is transferred to the surface of the gelatin compound in the pan by pressing the dusted eelctrophotographic plate against the surface of the layer so that the dyestuff is absorbed in the surface of the gelatin compound. Then copies can be produced by pressing sheets of copy paper on the gelatin compound surface one at a time. In such a process the original photographic exposure should be such that a mirror-reverse is produced on the gelatin compound when the dust is transferred to it.
The same principle can also be extended to the process in which the gelatin composition is carried in a thin coating on a backing sheet, instead of being placed in a pan, the copies being run olf in a rotary cylinder copying machine.
In still another ,process use is made of a method known in the art as spirit duplication. In this case the dusting powder should be an alcohol soluble dye or dye composition.
Such dyes as the basic dyestuffs rhodamine, Victoria blue, Victoria green, crystal violet, nigrosine, methyl violet, induline may be employed either alone or compounded with an alcohol soluble resin.
In the case of a resin-compounded dye the dust image may be transferred to a paper sheet as heretofore described and melted onto the paper Aor adhered to it by wetting'slightly with alcohol.
Copies can then be run offv by attaching the master thus formed to the drum of a rotary duplicator and running through blank sheets moistened with alcohol or other spirit solvent, each of which picks up some of the dye.
If pure dye is used for the dusting powder it may be transferred to a specially prepared sheet having an adhesive on its surface (such as resin which can be melted to make the dye stick to the sheet).
According to a further modification the dyed resin can be melted directly onto the photoconductive insulating layer and the layer itself used as a master from which copies can be run off. If anthracene or anthroquinone or some other readily volatilized photoconductive layer is used it may be evaporated and .the image melted directly onto the metal backing.
H alf tones My process has been described particularly with relation to the reproduction of black-and-white copy such as printed matter, drawings and typewritten matter. I have successfully applied it, however, to the production of pictorial photographs. This is possible by virtue of the fact that where grays appear in the picture (i. e. areas not solid black nor pure white) the electrostatic charge is only discharged in part, leaving sucient charge to attract a small amount of powder but incapable of retaining enough powder to cover the surface with a dense layer. As a result the individual powder particles are spaced apart on the surface, the powder density depending on the intensity of the electric charge on the various parts of the surface. Since the particles are so extremely small as not to be individually visible the effect on the naked eye is of a picture of varying shades of gray, much the same as with an ordinary half -tone picture.
In fact, the picture thus produced is really a form of half tone and as such may be used for lithographic or hectographic reproduction of pictorial subjects and for the production of half-tone cuts. This may be better understood by reference to Figure 10 which is a highly magnified view of a dusted electrostatic image of a pictorial subject, the part reproduced being an enlargement of a human eye. It will be noted that in the darker parts of the image such as the eyelash and pupil the dust particles 3i are clustered close together, while in .the lighter parts the particles are more widely separated, and in the white parts no particles adhere at all.
If the particles are of fusible resin they can be melted onto the backing and each will serve as a tiny printing area in a lithographie or hectographic process. In the case of half-tone cuts the resin areas protect the backing metal while the surrounding uncovered areas are etched away.
By using powders in which particles of various diameters are mixed together in different proportions (rather than using grains all of one diameter, as illustrated) a variety of different effects can be achieved.
My process is also applicable to the making of half-tones by conventional methods such as by using a half-tone screen in the camera or by photographing a half-tone original.
Paper layers While I have described the photoconductive insulating layer as attached to a metal backing this is not always necessary. Where the material is of such nature as to form a sheet it may be used independently, it being only necessary to provide a conductive backing by contact during the exposure step to drain off the charge.
I have also found that certain of the materials can be impregnated into paper. It is preferred to use pure cellulose paper and to obtain more or less of a layer of the photoconductive insulating material on a surface of the paper as well as impregnated into the sheet. Anthracene is particularly useful for such a sheet although the other materials, including sulfur have also beenA salt, such as silver chloride, may be deposited in the paper and reduced to metallic silver by exposure to light, after which the sheet is thoroughly washed to eliminate any remaining chemicals, and then the photoconductive material applied. Certain conductive metallic compounds such as the suldes may also be used.
Another type of electrophotographic sheet is made by coating a sheet of paper with a layer of conductive material such as bronze or carbon powder held in a binder, the photoconductive insulating material being applied to .the conductive surface or impregnated into the sheet.
The conductive layer may be sprayed or painted onto the paper or rolled into the surface before applying the photoconductive material and in a some cases afterward.
Color photography It has already been mentioned that colored powders may be used in developing the image. It is thereby possible to produce a copy in any color, either the same as or different from that of the original.
The process can also be used for multi-color vphotography by exposing a plate first to the original through light filters which enable one color to be recorded, and then developing with colored powder to produce a copy of that color, then repeating for each other color and superimposing the dust images on the same copy sheet.
Conclusion An outstanding advantage of the process described herein is its simplicity and rapidity. It
is a matter of only a few seconds to make a complete permanent copy of any original. No complex chemical development process is required.
This gives the process a further advantage in that itmay readily be performed by mechanical means, it being only necessary to provide an apparatus for performing the necessary operations in sequence.
Another advantage resides in the fact that the sensitized plates may be used over and over again it merely being necessary to brush off the surface and recharge it before each exposure. Since the insulating photoconductive layer 2l is normally in contact with the air, which may often be quite humid, the material forming the layer should preferably be of a type which is not highly reactive and which is non-hygroscopic, since moisture in the layer will destroy its insulating properties. All of the materials described herein are of this type.
The plate need not be stored in the dark as is required with ordinary photographic plates, since the plate is prepared for exposure by charging the surface each time immediately before exposure.
The present process is suitable for copying letters, drawings, printed matter, books, typewritten matter, enlarging matter from films such as microfilm, pictorial photography, color photography, half-tone production and as a means for producing masters for lithographic, hectographic or typographical production of multiple copies.
In the specification and claims light is intended to refer not only to visible radiation but also other radiations which affect the photoconductive material, such as ultra-violet radiations, infra-red, etc.
The present application is a continuation in part of my prior-filed co-pending application S. N. 169,630, filed October 18, 1937.
While the present invention, as to its objects and advantages, has been described herein as carried out in specific embodiments thereof, itis not desired to be limited thereby but it is intended to cover the invention broadly within the spirit and scope of the appended claims.
What is claimed is:
1. The method of making a photographic reproduction which comprises applying a uniform layer of photoconductive insulating material to a plane conductive backing, developing a strong electrostatic charge on the surface of said layer by rubbing said surface, exposing the layer to a light image whereby to render the illuminated areas thereof sufficiently conductive to drain off a substantial proportion of said charge to said conductive backing, then bringing a ne dust into contact with the surface whereby to form an electro-static dust deposit on the areas of said surface remaining charged after the exposure, then blowing off excess dust not electrostatically held on said surface, whereby a dust image will be produced in which the dark areas of the original image will be reproduced as dust deposit areas.
2. The method of making a photographic reproduction which comprises applying a uniform layer of photoconductive insulating material to a plane conductive backing, developing a strong electrostatic charge on the surface of said layer by rubbing said surface, exposing the layer to a light image whereby to render the illuminated areas thereof sufficiently conductive to drain off a substantial proportion of said charge to said conductive backing, then bringing a fine dust into contact with the surface whereby to form an electrostatic dust deposit on the areas of said surface remaining charged after the exposure, then blowing off excess dust not electrostatically held on said surface, whereby a dust image will be produced in which the dark areas of the original image will be reproduced as dust deposit areas, then transferring the dust image to a sheet of paper by pressing said pap-er against said surface.
3. The method of making a direct-positive photographic reproduction which comprises rubbing the surface of a layer of photoconductive insulating material to produce an electrostatic charge on said surface, then exposing the layer to a light image while simultaneously engaging the side of said layer opposite said charged surface with a conductive backing whereby the illuminated portions of said layer will have their conductivity increased by the illumination and will allow at least part of said charge to drain off to said conductive backing in said illuminated areas, then bringing a dark-colored powder into contact with said surface whereby to form a dust deposit thereon, removing the dust not held onto said surface by electrostatic attraction by passing an air stream over the surface, whereby a dust image is produced on said surface, transferring said dust image to a sheet of paper by pressing said sheet against said surface carrying the dust image and afiixing said dust to said paper.
4. The method of producing an electrostatic latent image which comprises rubbing the surface of a layer of photoconductive insulating material supported on a conductive backing to charge the surface thereof and produce a strong electric potential gradient through the layer between the charged surface and the backing and projecting a light image onto said layer whereby said layer is rendered partially conductive in the areas thereof illuminated by said image, said light image comprising a pattern of light and shadow to be recorded, said illumination increasing the electrical conductivity of said illuminated areas and thereby permitting a migration of electric charges through said layer in the illuminated ar-eas due to said potential gradient, but not to any substantial extent in the unilluminated areas, whereby said electrostatic latent image will be produced at the surface of said layer due to the chance in charge brought about on the illuminated parts of said surface by said charge migration, said image being trapped at said surface when said illumination is discontinue-d due to the return of said layer to its normal dark insulating value.
5. The method of photography which comprises charging the surface of a layer of photoconductive insulating material with an electric charge, exposing the layer photographically to a light image for a period sufficient to substantially discharge the areas receiving the highest intensity of illumination while at the same time engaging the opposite surface of said layer with a conductive backing, and then dusting the charged surface with a ne electroscopic powder to develop the charge image, and subsequently fixing the powder in the configuration in which it is deposited.
6. `The method of photography which comprises charging the surface of a layer of photoconductive insulating material with an electric charge, exposing the charged layer photographically Vwhile maintaining a conductive backing in contact with the surface of said layer opposite to said charged surface, and then dusting the charged surface with an electrostatically attractable finely divided material to develop the charge image.
'7. The method of photography which comprises applying a strong electric field through a layer of photoconductive insulating material and simultaneously projecting a light image onto said layer, said light image comprising a pattern of light and shadow to be recorded, whereby electricity will ow through said layer in the illuminated parts thereof, thereby producing an electrostatic charge image at a surface thereof, shutting off the illumination and storing said electrostatic charge image on said surface by protecting said layer from illumination subsequent to exposure to the light image, and subsequently developing said image by dusting said stored charge image with an electroscopic powder.
8. The method of making an electrostatic latent image. which comprises charging a surface of a layer of photoconductive insulating material with an -electrostatic charge and then exposing said layer to a light image while simultaneously engaging the sid-e of said layer opposite to said charged surface with a conductive backing, said light image comprising a pattern of light and shadow to be recorded, whereby the illuminated portions of said layer will have their conductivity increased by the illumination and will conduct at least part of said charge away to said conductive backing in said illuminated areas, thereby leaving an electrostatic latent image on said surface corresponding to said light image, and then cutting off the illumination of said layer and storing said electrostatic image on the surface thereof.
9. The method of forming an electrostatic latent image on the surface of a layer of photoconductive insulating material afliXed to a conductive backing which comprises charging the surface of said layer with a distributed electrostatic charge and then exposing said layer to a light image, said light image comprising a pattern of light and shadow to be recorded, whereby the illuminated portions of said layer will have their conductivity increased by the illumination and will conduct at least a part of said charge away to said conductive backing in said illuminated areas, thereby leaving an electrostatic latent image on said surface corresponding to said light image, and then cutting ofi" the illumination of said layer and storing said electrostatic image on the surface thereof for an indefinite period.
i0. The method of printing a design on a surface which comprises producing an electrostatic charge pattern on the surface of a layer of insulating material, depositing a powder on said pattern whereby to produce a corresponding powder design, and then transferring the powder design to a second surface by pressing said surfaces together, at least one of the materials comprising said powder and said second surface being thermoadhesive in nature, and permanently aflixing said powder design to said second surface by heating said surface and design until said thermoadhesive material becomes adhesive.
ll. The method of making a photographic reproduction which comprises applying an electric field through a layer of photoconductive insulating material and projecting an image onto said layer whereby a flow of electricity will take place through said layer producing an electrostatic latent image at a surface thereof, then depositing dust particles on said surface where said particles will adhere in a distribution varying in density with the intensity of the charge at the various parts of the surface.
l2. A device for electrophotography comprising a pair of layers of conductive material disposed in spaced parallel relation, a thin layer of photoconductive insulating material attached to one of said conductive layers on its surface nearest the other conductive layer, said photcconductive layer being spaced from said other conductive layer whereby it is insulated therefrom; one of said conductive layers being permeable to light, means for projecting a light image onto said photoconductive layer by projecting light through said light-permeable layer, and means for applying a high-voltage potential difference between said pair of conductive layers, whereby an electrostatic latent image corresponding to said light image may be produced on the exposed surface of said photoconductive insulating layer by application of said potential diiference and projecting said light image thereon, said layers being exposed to air at atmospheric pressure and said photoconductive insulating material being nonhygroscopic.
13. A device for reproducing images comprising a layer of photoconductive material of the type having a high insulating value in the dark, a contiguous contacting layer of conductive material engaging one surface of said photoconductive insulating layer, means for applying an electric iield through saidi phbtoconductive insulating layer and means for projecting a predetermined light image comprising a pattern of light and shadow to be recorded onto said photoconductive insulating layer, said layer of photoconductive material being exposed to air at atmospheric pressure, said material being non-hygroscopic.
14. An electrophotographic camera comprising a layer of photoconductive insulating material affixed to a conductive backing, a transparent conductive layer spaced yand insulated from the front surface of said photoconductive insulating layer and a lens supported in front of said layers in a position to project a light image onto said photoconductive layer through said transparent conductive layer, and means to apply a high voltage potential difference between said transparent conductive layer and said conductive backing.
15. An electrophoto camera comprising a light tight box having a lens and shutter for admitting a light image, a layer of photoconductive insulating material and a backing supporting said layer in a position within said box to receive an image projected thereon by said lens, spaced parallel conductive electrodes in front of and behind said layer, a high voltage source and means for connecting the terminals thereof to said electrodes to apply a high potential difference between said electrodes, said electrode in front of said layer being light permeable whereby said image may be projected therethrough, and an electric flood lamp mounted within said box for flooding said layer with light at the will of the operator.
16,. The method of producing an electrostatic latent image at the surface of a layer of photoconductive insulating material having a conductive backing, which comprises charging the front surface of said layer with a distributed electrostatic charge and subsequently exposing said layer to a light image comprising a pattern of light and shadow to be recorded, whereby at least part of said charge will drain off through said layer to said conductive backing in the illuminated areas of said layer leaving an electrostatic charge image on said layer, and then cutting oif said illumination.
17. rIfhe method of recording a light image comprising a pattern of light and shadow to be recorded which method comprises producing and storing an electrostatic latent image corresponding to said light image by creating a strong electric eld through a layer of photoconductive insulating material and exposing said layer to said light image to be recorded, whereby electricity will flow through said layer in the illuminated areas thereof thereby changing the charge condition of the illuminated areas at a surface of said layer thus producing said electrostatic latent image thereat, then cutting off the illumination of the image field of said layer to restore the normal dark insulating value to all parts of said layer in the image field and thereby entrap said electrostatic latent image at said surface for an indefinite period.
18. The method of producing an electrostatic latent image upon a layer of photoconductive insulating material which comprises charging the outer surface of said layer with a first polarity charge, then exposing said layer to a light image while supporting a transparent electrode spaced from said outer surface, said electrode being charged with the said first polarity charge, and continuing said exposure long enough for the most highly illuminated areas of said layer surface to discharge and to recharge to opposite polarity under influence of said electrode, whereby an electrostatic latent image is produced having areas thereof charged with said rst polarity charge and other areas thereof charged with the opposite polarity charge.
19. The method of recording a light image comprising a pattern of light and 'shadow to be recorded which method comprises producing and storing an electrostatic latent image corresponding to said light image by creating a strong electric field through a layer of photoconductive insulating material and exposing said layer to said light image to be recorded, whereby electricity will flow through said layer in the illuminated areas thereof thereby changing the charge condition of the illuminated areas at a surface of said layer thus producing said electrostatic latent image thereat, then cutting off the illumination of the image field of said layer to restore the normal dark insulating value to all parts of said layer in the image eld and thereby entrap said electrostatic latent image at said surface for an indefinite period, and subsequently depositing a finely divided material on said electrostatic latent image to form a corresponding image out of said material.
20. The method of photography which comprises applying a strong electric field through a layer of photoconductive insulating material and simultaneously projecting a light image onto said layer, said light image comprising a pattern of light and shadow to be recorded, whereby electricity will flow through said layer in the illuminated part thereof, thereby producing an electrostatic charge image at a surface thereof, and then depositing a finely divided electrostatically attractable material on said image to make the image Visible.
21. The method of electrographic recording which comprises producing an electrostatic latent image at the surface of a layer of insulating material, developing the image by depositing an electrostatically attractable iinely divided material thereon, then transferring the material in the image configuration to a second surface by pressure contact and aflixing the transferred material to the second surface.
22. The method of printing a design on a surface which comprises producing an electrostatic charge pattern on the surface of a layer of insulating material, depositing a finely divided material on said pattern whereby to render said pattern visible, and then transferring said material to a second surface and permanently afxing said material to said second surface in the configuration of said pattern.
23. The method of applying a design to a surface which comprises producing an electrostatic charge pattern at the surface of a layer of insulating material, depositing a powder on said pattern whereby to produce a corresponding powder design by the electrostatic attraction of said pattern for said powder, and bringing a second surface having an adhesive material thereon into contact with the powder design whereby to transfer said powder design to said second surface.
24. The method of applying a design to a surface which comprises producing an electrostatic charge pattern at the surface of a layer of insulating material, depositing a powder on said pattern whereby to produce a corresponding powder design by the electrostatic attraction of said pattern for said powder, and bringing a second surface having an adhesive material thereon into contact with the powder design whereby to transfer said powder design to said second surface, and then permanently affixing the powder design to said second surface.
25. The method of producing a powder design on a sheet of insulating material which comprises rst producing an electrostatic charge pattern on a second layer of insulating material, then placing said sheet in contact with said second layer and then bringing a iinely divided electroscopic material adjacent the exposed surface thereof, whereby the electrostatic charge pattern acting through said insulating sheet causes adherence of said electrosoopic material to the eX- posed surface thereof in a design corresponding to said pattern.
26. The method of producing a half-tone picture having varied shadings of light and shadow which comprises producing a distribution of individual solid particles of fusible material on a surface in a particle density corresponding to the degree of shading desired on each part of the surface and then aixing said particles to said surface, by melting said particles thereon to produce a half-tone dot from each of said particles.
2'?. The method of producing a half-tone picture having varied shadings of light and shadow which comprises producing an electrostatic charge image, producing under the iniiuence thereof a distribution of individual solid particles of fusible material on a surface in a particle density corresponding to the charge on each part of said electrostatic image and then aixing said particles to said surface by melting said particles thereon to produce a half-tone dot from each of said particles.
CHESTER F. CARLSON.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US265925A US2297691A (en) | 1939-04-04 | 1939-04-04 | Electrophotography |
FR922351D FR922351A (en) | 1939-04-04 | 1946-02-13 | Electrophotography process and photographic plate for its application |
GB20671/47A GB672767A (en) | 1939-04-04 | 1947-07-30 | Electrophotography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US265925A US2297691A (en) | 1939-04-04 | 1939-04-04 | Electrophotography |
Publications (1)
Publication Number | Publication Date |
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US2297691A true US2297691A (en) | 1942-10-06 |
Family
ID=23012450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US265925A Expired - Lifetime US2297691A (en) | 1939-04-04 | 1939-04-04 | Electrophotography |
Country Status (3)
Country | Link |
---|---|
US (1) | US2297691A (en) |
FR (1) | FR922351A (en) |
GB (1) | GB672767A (en) |
Cited By (736)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2431923A (en) * | 1943-08-23 | 1947-12-02 | Rca Corp | Photographic record and method of forming same |
US2484782A (en) * | 1948-02-27 | 1949-10-11 | Haloid Co | Method of removing electroscopic powder from an electrophotographic plate |
US2549546A (en) * | 1947-10-24 | 1951-04-17 | Albert G Thomas | Photographic electrical copying device |
US2551582A (en) * | 1943-08-27 | 1951-05-08 | Chester F Carlson | Method of printing and developing solvent images |
US2573881A (en) * | 1948-11-02 | 1951-11-06 | Battelle Development Corp | Method and apparatus for developing electrostatic images with electroscopic powder |
US2576047A (en) * | 1948-10-21 | 1951-11-20 | Battelle Development Corp | Method and apparatus for printing electrically |
US2586484A (en) * | 1950-04-29 | 1952-02-19 | Haloid Co | Fusing device |
US2598732A (en) * | 1949-03-09 | 1952-06-03 | Haloid Co | Electrophotography |
US2599542A (en) * | 1948-03-23 | 1952-06-10 | Chester F Carlson | Electrophotographic plate |
US2600580A (en) * | 1949-06-03 | 1952-06-17 | Haloid Co | Electrophotographic apparatus |
US2618552A (en) * | 1947-07-18 | 1952-11-18 | Battelle Development Corp | Development of electrophotographic images |
US2618551A (en) * | 1948-10-20 | 1952-11-18 | Haloid Co | Developer for electrostatic images |
US2624652A (en) * | 1944-10-11 | 1953-01-06 | Chester F Carlson | Graphic recording |
US2637651A (en) * | 1948-10-02 | 1953-05-05 | Battelle Development Corp | Method of producing images on rigid surfaces |
US2638416A (en) * | 1948-05-01 | 1953-05-12 | Battelle Development Corp | Developer composition for developing an electrostatic latent image |
US2647464A (en) * | 1949-10-26 | 1953-08-04 | Battelle Development Corp | Electrography |
US2659670A (en) * | 1950-06-06 | 1953-11-17 | Haloid Co | Method of developing electrostatic images |
US2663636A (en) * | 1949-05-25 | 1953-12-22 | Haloid Co | Electrophotographic plate and method of producing same |
US2666144A (en) * | 1950-02-02 | 1954-01-12 | Battelle Development Corp | Electroradiography |
US2676100A (en) * | 1952-02-02 | 1954-04-20 | Huebner Company | Method and apparatus for reproducing images |
US2681473A (en) * | 1948-12-30 | 1954-06-22 | Chester F Carlson | Manufacture of plaques and the like |
US2682478A (en) * | 1950-09-11 | 1954-06-29 | Technicolor Motion Picture | Method of forming television screens |
US2690394A (en) * | 1943-08-27 | 1954-09-28 | Chester F Carlson | Electrophotography |
US2693416A (en) * | 1950-05-19 | 1954-11-02 | Western Electric Co | Method of electrostatic electrophotography |
US2712607A (en) * | 1952-07-01 | 1955-07-05 | Orlando Carl | Device for intensifying photoelectrostatic image |
US2716048A (en) * | 1952-08-14 | 1955-08-23 | Charles J Young | Electrostatic facsimile receiver |
US2727826A (en) * | 1950-09-30 | 1955-12-20 | Rca Corp | Image transfer material and method of making it |
US2732775A (en) * | 1956-01-31 | Continuous direct electrophotographic recorder | ||
US2745327A (en) * | 1952-05-12 | 1956-05-15 | Haloid Co | Electrophotographic process |
US2750922A (en) * | 1951-12-13 | 1956-06-19 | Haloid Co | Apparatus for developing electrophotographic plates |
US2752833A (en) * | 1950-07-15 | 1956-07-03 | Carlyle W Jacob | Apparatus for reproduction of pictures |
US2758524A (en) * | 1953-12-30 | 1956-08-14 | Rca Corp | Electrostatic photographic printing |
US2758525A (en) * | 1953-12-30 | 1956-08-14 | Rca Corp | Electrostatic photographic printing |
US2764500A (en) * | 1951-10-04 | 1956-09-25 | Huebner Company | Method and apparatus for reproducing images |
US2774921A (en) * | 1953-04-23 | 1956-12-18 | Haloid Co | Apparatus for electrostatically charging insulating image surfaces for electrophotography |
US2776907A (en) * | 1952-07-18 | 1957-01-08 | Battelle Development Corp | Method of fixing electrostatic powder image |
US2788288A (en) * | 1953-07-29 | 1957-04-09 | Haloid Co | Process and composition for developing an electrostatic image |
US2803541A (en) * | 1953-05-29 | 1957-08-20 | Haloid Co | Xerographic plate |
US2803177A (en) * | 1953-12-31 | 1957-08-20 | Ibm | Apparatus and method for xerographic printing |
US2804396A (en) * | 1952-08-19 | 1957-08-27 | Battelle Development Corp | Process of preparing an X-ray sensitive member |
US2808328A (en) * | 1950-07-15 | 1957-10-01 | Carlyle W Jacob | Method and apparatus for xerographic reproduction |
US2816493A (en) * | 1953-03-19 | 1957-12-17 | Haloid Co | Electrophotographic microfilm enlarger |
US2817598A (en) * | 1955-02-01 | 1957-12-24 | Haloid Co | Continuous tone reversal development process |
US2817277A (en) * | 1955-01-07 | 1957-12-24 | Haloid Co | Electrophotographic camera |
US2825814A (en) * | 1953-07-16 | 1958-03-04 | Haloid Co | Xerographic image formation |
US2826168A (en) * | 1956-04-16 | 1958-03-11 | Grant Photo Products Inc | Means for making electrostatic prints |
US2829050A (en) * | 1952-02-23 | 1958-04-01 | Huebner Company | Method and apparatus for reproducing images |
US2833930A (en) * | 1953-07-16 | 1958-05-06 | Haloid Co | Electrostatic charging method and apparatus |
US2833648A (en) * | 1953-07-16 | 1958-05-06 | Haloid Co | Transfer of electrostatic charge pattern |
US2839400A (en) * | 1953-10-30 | 1958-06-17 | Rca Corp | Electrostatic printing |
US2838997A (en) * | 1953-10-30 | 1958-06-17 | Rca Corp | Electrostatic image copying method |
US2843499A (en) * | 1956-09-25 | 1958-07-15 | Haloid Xerox Inc | Pressure transfer of xerographic images |
US2845348A (en) * | 1952-01-04 | 1958-07-29 | Kallman Hartmut | Electro-photographic means and method |
US2846333A (en) * | 1955-11-01 | 1958-08-05 | Haloid Xerox Inc | Method of developing electrostatic images |
US2853383A (en) * | 1953-10-02 | 1958-09-23 | Paul H Keck | Method and apparatus for amplifying photoelectric currents |
US2855324A (en) * | 1955-04-07 | 1958-10-07 | van dorn | |
US2855297A (en) * | 1955-05-16 | 1958-10-07 | Owens Illinois Glass Co | Electrophotographic method of applying art work to rubber for engraving |
US2857272A (en) * | 1954-09-28 | 1958-10-21 | Rca Corp | Electrostatic printing |
US2857271A (en) * | 1954-09-28 | 1958-10-21 | Rca Corp | Electrostatic printing process for producing photographic transparencies |
US2860048A (en) * | 1955-06-13 | 1958-11-11 | Haloid Xerox Inc | Xerographic plate |
US2861543A (en) * | 1954-06-14 | 1958-11-25 | Haloid Xerox Inc | Apparatus for development of electrostatic image |
US2862816A (en) * | 1954-03-26 | 1958-12-02 | Rca Corp | Method of and means for reducing triboelectric forces in electrophotography |
US2862815A (en) * | 1953-10-01 | 1958-12-02 | Rca Corp | Electrophotographic member |
US2863768A (en) * | 1955-07-05 | 1958-12-09 | Haloid Xerox Inc | Xerographic plate |
US2868642A (en) * | 1955-01-03 | 1959-01-13 | Haloid Xerox Inc | Electrophotographic method |
US2873721A (en) * | 1954-11-03 | 1959-02-17 | Haloid Xerox Inc | Micromanifold for powder cloud development |
US2874064A (en) * | 1955-05-16 | 1959-02-17 | Haloid Xerox Inc | Xerographic cleaner |
US2876737A (en) * | 1953-10-12 | 1959-03-10 | Battelle Development Corp | Apparatus for developing electrostatic images on sheet material |
US2881073A (en) * | 1955-12-29 | 1959-04-07 | Ibm | Method of forming permanent data on magnetic recording media |
US2885556A (en) * | 1955-08-01 | 1959-05-05 | Haloid Xerox Inc | Simultaneous charging device and method |
US2886464A (en) * | 1955-08-09 | 1959-05-12 | Haloid Xerox Inc | Contact transfer for xerography |
US2886434A (en) * | 1955-06-06 | 1959-05-12 | Horizons Inc | Protected photoconductive element and method of making same |
US2885955A (en) * | 1955-05-11 | 1959-05-12 | Haloid Xerox Inc | Xerographic machine |
US2890968A (en) * | 1955-06-02 | 1959-06-16 | Rca Corp | Electrostatic printing process and developer composition therefor |
US2892794A (en) * | 1955-01-03 | 1959-06-30 | Haloid Xerox Inc | Electrostatic developer and toner |
US2894840A (en) * | 1955-06-14 | 1959-07-14 | Haloid Xerox Inc | Method for fixing xerographic images |
US2895847A (en) * | 1953-12-21 | 1959-07-21 | Battelle Development Corp | Electric image development |
US2898468A (en) * | 1956-06-29 | 1959-08-04 | Gen Dynamics Corp | Recording apparatus |
US2899335A (en) * | 1956-10-31 | 1959-08-11 | Process for developing electrostatic | |
US2899331A (en) * | 1955-01-25 | 1959-08-11 | Process of developing electrostatic | |
US2900515A (en) * | 1956-03-16 | 1959-08-18 | Edward L Criscuolo | Radiography by gas ionization |
US2901348A (en) * | 1953-03-17 | 1959-08-25 | Haloid Xerox Inc | Radiation sensitive photoconductive member |
US2901374A (en) * | 1955-05-04 | 1959-08-25 | Battelle Development Corp | Development of electrostatic image and apparatus therefor |
US2904431A (en) * | 1954-08-26 | 1959-09-15 | Rca Corp | Electrographotographic charging means |
US2904000A (en) * | 1957-05-15 | 1959-09-15 | Century Geophysical Corp | Magnetic-brush developer |
US2907674A (en) * | 1955-12-29 | 1959-10-06 | Commw Of Australia | Process for developing electrostatic image with liquid developer |
US2909118A (en) * | 1956-01-05 | 1959-10-20 | Warren S D Co | Magnetically imageable planographic plate |
US2910351A (en) * | 1955-01-03 | 1959-10-27 | Gen Electric | Method of making printed circuit |
US2914403A (en) * | 1955-05-17 | 1959-11-24 | Rca Corp | Electrostatic printing |
US2914996A (en) * | 1953-06-03 | 1959-12-01 | Sprague Electric Co | Electrostatic unit for producing printed circuits |
US2917385A (en) * | 1955-08-26 | 1959-12-15 | Haloid Xerox Inc | Reflex xerography |
US2919179A (en) * | 1956-05-21 | 1959-12-29 | Haloid Xerox Inc | Resist forming method |
US2919247A (en) * | 1954-12-23 | 1959-12-29 | Haloid Xerox Inc | Tripartite developer for electrostatic images |
US2919191A (en) * | 1954-12-27 | 1959-12-29 | Haloid Xerox Inc | Xerographic transfer method |
US2922716A (en) * | 1954-02-11 | 1960-01-26 | Nathan Frederick | Process of and apparatus for preparing photo-engraved printing plates |
US2934649A (en) * | 1957-01-09 | 1960-04-26 | Haloid Xerox Inc | Induction charging |
US2937943A (en) * | 1957-01-09 | 1960-05-24 | Haloid Xerox Inc | Transfer of electrostatic charge pattern |
US2939787A (en) * | 1957-03-01 | 1960-06-07 | Rca Corp | Exposure of photochemical compositions |
US2940847A (en) * | 1957-07-03 | 1960-06-14 | None i red | |
US2943950A (en) * | 1953-05-07 | 1960-07-05 | Haloid Xerox Inc | Electrostatic developing apparatus and method |
US2947625A (en) * | 1955-12-21 | 1960-08-02 | Ibm | Method of manufacturing printed circuits |
US2949848A (en) * | 1955-07-27 | 1960-08-23 | Haloid Xerox Inc | Stencil making |
US2954291A (en) * | 1957-01-04 | 1960-09-27 | Haloid Xerox Inc | Method for preparing a spirit duplicating master |
DE974162C (en) * | 1955-08-30 | 1960-09-29 | Rca Corp | Process for the production of lithographic printing plates by the electrostatic process |
US2955035A (en) * | 1956-01-03 | 1960-10-04 | Haloid Xerox Inc | Raised xerographic images |
US2955938A (en) * | 1955-08-01 | 1960-10-11 | Haloid Xerox Inc | Xerography |
US2956487A (en) * | 1955-03-23 | 1960-10-18 | Rca Corp | Electrostatic printing |
US2956875A (en) * | 1958-09-26 | 1960-10-18 | Rca Corp | Electrophotographic process for making stencil screens |
US2957765A (en) * | 1957-06-13 | 1960-10-25 | Gen Aniline & Film Corp | Method of and composition for preparing lithographic printing plates |
US2962375A (en) * | 1956-05-02 | 1960-11-29 | Haloid Xerox Inc | Color xerography |
US2962374A (en) * | 1956-05-01 | 1960-11-29 | Haloid Xerox Inc | Color xerography |
US2963365A (en) * | 1956-02-16 | 1960-12-06 | Rca Corp | Electrostatic printing |
US2965483A (en) * | 1958-09-23 | 1960-12-20 | Haloid Xerox Inc | Xerographic contrast |
US2965481A (en) * | 1955-08-01 | 1960-12-20 | Haloid Xerox Inc | Electrostatic charging and image formation |
US2966429A (en) * | 1956-08-31 | 1960-12-27 | Gen Electric | Method of and apparatus for making printed circuits |
US2970906A (en) * | 1955-08-05 | 1961-02-07 | Haloid Xerox Inc | Xerographic plate and a process of copy-making |
US2975052A (en) * | 1956-03-19 | 1961-03-14 | Gen Dynamics Corp | Electrostatic printing |
US2979402A (en) * | 1956-07-31 | 1961-04-11 | Rca Corp | Electrostatic printing |
US2982647A (en) * | 1956-06-14 | 1961-05-02 | Haloid Xerox Inc | Electrostatic image reproduction |
US2984163A (en) * | 1961-05-16 | giaimo | ||
US2986466A (en) * | 1955-12-06 | 1961-05-30 | Edward K Kaprelian | Color electrophotography |
US2990280A (en) * | 1958-10-24 | 1961-06-27 | Rca Corp | Electrostatic printing |
US2990473A (en) * | 1955-05-04 | 1961-06-27 | Research Corp | Method for recording, detecting and measuring radiation and for recording and recalling data |
US2992128A (en) * | 1955-02-04 | 1961-07-11 | Little Inc A | Record members to provide a visible trace of movement of a mechanical stylus |
US2995085A (en) * | 1954-02-23 | 1961-08-08 | Haloid Xerox Inc | Transfer and fixing method |
US2996400A (en) * | 1956-08-30 | 1961-08-15 | Eastman Kodak Co | Positive and negative electroprinting |
US3000735A (en) * | 1956-06-11 | 1961-09-19 | Keller Daniel Franklin | Method and apparatus for the reproduction of images |
US3001872A (en) * | 1957-03-18 | 1961-09-26 | Xerox Corp | Preparing planographic plates and solution therefor |
US3005707A (en) * | 1956-04-16 | 1961-10-24 | Leonard E Ravich | Devices exhibiting persistent internal polarization and methods of utilizing the same |
US3008826A (en) * | 1958-03-06 | 1961-11-14 | Xerox Corp | Xerographic development |
DE1117391B (en) * | 1959-03-18 | 1961-11-16 | Kalle Ag | Electrophotographic process for the production of printing forms |
US3010883A (en) * | 1956-03-30 | 1961-11-28 | Minnesota Mining & Mfg | Electrolytic electrophotography |
US3010884A (en) * | 1957-10-28 | 1961-11-28 | Minnesota Mining & Mfg | Electrophotosensitive copy-sheet |
US3010842A (en) * | 1955-08-29 | 1961-11-28 | Xerox Corp | Development of electrostatic images |
US3011436A (en) * | 1953-09-30 | 1961-12-05 | Gen Electric | Methods of making printing plates |
US3011473A (en) * | 1958-05-01 | 1961-12-05 | Xerox Corp | Xerographic apparatus |
US3013878A (en) * | 1955-12-29 | 1961-12-19 | Xerox Corp | Method and apparatus for transferring and fixing xerographic images |
US3013890A (en) * | 1958-07-08 | 1961-12-19 | Xerox Corp | Process of developing electrostatic images and composition therefor |
US3015304A (en) * | 1957-10-02 | 1962-01-02 | Xerox Corp | Electrostatic image reproduction |
US3025160A (en) * | 1957-06-08 | 1962-03-13 | Agfa Ag | Electrostatic printing |
US3028799A (en) * | 1957-03-08 | 1962-04-10 | Keller Daniel Franklin | Apparatus for electrophotographic printing |
US3031572A (en) * | 1959-11-05 | 1962-04-24 | Charles E Ryan | Infrared xerography |
US3032432A (en) * | 1957-08-05 | 1962-05-01 | Commw Of Australia | Controlled tone development for electrophotography |
US3037861A (en) * | 1957-09-07 | 1962-06-05 | Kalle Ag | Electrophotographic reproduction material |
US3038442A (en) * | 1958-12-29 | 1962-06-12 | Burroughs Corp | Electrostatic developing apparatus |
DE1131707B (en) * | 1957-04-24 | 1962-06-20 | Rank Xerox Ltd | Electrostatic process of transferring insulating particles to a conductive surface in the production of xerographic reproductions |
US3043684A (en) * | 1955-01-26 | 1962-07-10 | Gen Dynamics Corp | Electrostatic printing |
US3043685A (en) * | 1957-07-18 | 1962-07-10 | Xerox Corp | Xerographic and magnetic image recording and reproducing |
US3043686A (en) * | 1958-07-08 | 1962-07-10 | Xerox Corp | Xerographic color masking |
US3045644A (en) * | 1957-06-06 | 1962-07-24 | Xerox Corp | Two-color electrostatic printing apparatus |
US3051568A (en) * | 1955-12-06 | 1962-08-28 | Edward K Kaprelian | Offset electrophotography |
US3052540A (en) * | 1954-06-02 | 1962-09-04 | Rca Corp | Dye sensitization of electrophotographic materials |
US3052539A (en) * | 1953-10-01 | 1962-09-04 | Rca Corp | Electrostatic printing |
US3052564A (en) * | 1954-12-20 | 1962-09-04 | Ibm | Printing with magnetic ink |
US3053688A (en) * | 1959-04-13 | 1962-09-11 | Rca Corp | Electrostatic printing |
US3054897A (en) * | 1956-08-17 | 1962-09-18 | Mason & Sons Ltd E N | Process of and apparatus for printing or copying by electrostatic photography |
US3056136A (en) * | 1957-10-31 | 1962-09-25 | Jack E Macgriff | Image control device and method of printing |
US3057997A (en) * | 1956-05-21 | 1962-10-09 | Edward K Kaprelian | Exposure charged electrophotography |
US3057719A (en) * | 1958-07-09 | 1962-10-09 | Xerox Corp | Process for forming electrostatic images |
US3057720A (en) * | 1959-05-04 | 1962-10-09 | Xerox Corp | Xerographic color reproduction |
US3060019A (en) * | 1958-07-22 | 1962-10-23 | Rca Corp | Color electrophotography |
US3060021A (en) * | 1958-03-20 | 1962-10-23 | Rca Corp | Method for electrophotographically producing a multicolor picture |
US3060020A (en) * | 1958-03-20 | 1962-10-23 | Rca Corp | Method of electrophotographically producing a multicolor image |
US3060051A (en) * | 1958-11-25 | 1962-10-23 | Rca Corp | Method of fusing powder images |
US3066023A (en) * | 1958-12-19 | 1962-11-27 | Azoplate Corp | Member for electrophotographic reproduction and process therefor |
US3072479A (en) * | 1957-05-29 | 1963-01-08 | Azoplate Corp | Electrophotographic plates comprising solid solutions of oxazolones |
US3076722A (en) * | 1959-04-29 | 1963-02-05 | Rca Corp | Electrostatic printing |
US3079272A (en) * | 1959-04-24 | 1963-02-26 | Rca Corp | Method of developing an electrostatic image |
US3081165A (en) * | 1957-09-09 | 1963-03-12 | Xerox Corp | Xerographic chemography |
US3084061A (en) * | 1953-09-23 | 1963-04-02 | Xerox Corp | Method for formation of electro-static image |
US3083622A (en) * | 1959-06-12 | 1963-04-02 | Robertson Photo Mechanix Inc | Xerographic apparatus |
US3083684A (en) * | 1955-09-29 | 1963-04-02 | Xerox Corp | Apparatus for pattern reproduction |
US3089953A (en) * | 1959-04-15 | 1963-05-14 | Kalle Ag | Reproduction process |
US3097095A (en) * | 1956-11-21 | 1963-07-09 | Azoplate Corp | Material for electrophotographic reproduction |
US3102045A (en) * | 1957-06-28 | 1963-08-27 | Metcalfe Kenneth Archibald | Production of patterns on cloth or similar substances |
US3102026A (en) * | 1957-12-24 | 1963-08-27 | Metcalfe Kenneth Archibald | Electrophotographic reflex and contact printing |
DE1153769B (en) * | 1959-10-22 | 1963-09-05 | Gerhard Ritzerfeld | Process for generating, renewing and printing xerographically produced hectographic printing forms |
US3106479A (en) * | 1952-12-03 | 1963-10-08 | Rca Corp | Electrostatic printing method and apparatus |
US3108894A (en) * | 1959-05-18 | 1963-10-29 | Burroughs Corp | Electrostatic charge production |
US3109367A (en) * | 1955-01-03 | 1963-11-05 | Xerox Corp | Method for pattern reproduction |
US3110621A (en) * | 1960-02-01 | 1963-11-12 | Warren S D Co | Electrostatic recording paper |
US3112197A (en) * | 1956-06-27 | 1963-11-26 | Azoplate Corp | Electrophotographic member |
DE1158987B (en) * | 1957-12-17 | 1963-12-12 | Commw Of Australia | Process for the production of a flat printing form or an etch reserve from a latent electrostatic image |
US3116147A (en) * | 1958-08-18 | 1963-12-31 | Plastic Coarting Corp | Coated paper sheet adapted for electrophotographic reproduction |
US3117884A (en) * | 1955-03-23 | 1964-01-14 | Rca Corp | Electrostatic printing process and apparatus |
US3121007A (en) * | 1958-02-12 | 1964-02-11 | Xerox Corp | Photo-active member for xerography |
US3121006A (en) * | 1957-06-26 | 1964-02-11 | Xerox Corp | Photo-active member for xerography |
US3124456A (en) * | 1958-10-30 | 1964-03-10 | figure | |
US3130046A (en) * | 1959-01-07 | 1964-04-21 | Azoplate Corp | Electrophotographic reproduction material |
US3132037A (en) * | 1960-04-04 | 1964-05-05 | Xerox Corp | Xerographic transfer method |
US3133484A (en) * | 1961-09-29 | 1964-05-19 | Rca Corp | Electrostatic printing apparatus |
US3138458A (en) * | 1955-09-30 | 1964-06-23 | Minnesota Mining & Mfg | Electrophotography |
US3140175A (en) * | 1957-07-03 | 1964-07-07 | Edward K Kaprelian | Color electrophotography |
US3143066A (en) * | 1954-01-05 | 1964-08-04 | Xerox Corp | Production of duplicating masters |
US3143508A (en) * | 1957-07-03 | 1964-08-04 | Edward K Kaprelian | Developer for electrophotography |
US3146100A (en) * | 1960-01-26 | 1964-08-25 | Bohn Business Machines Inc | Electronic photocopying apparatus and method |
US3158475A (en) * | 1960-03-31 | 1964-11-24 | Gevaert Photo Prod Nv | Electrophotographic material |
US3159483A (en) * | 1959-07-14 | 1964-12-01 | Azoplate Corp | Process for the preparation of electrophotographic reversed images |
US3161505A (en) * | 1961-01-28 | 1964-12-15 | Azoplate Corp | Material for electrophotographic purposes |
US3162532A (en) * | 1959-06-25 | 1964-12-22 | Azoplate Corp | Photoconductive layers for electrophotographic purposes |
US3166418A (en) * | 1959-05-07 | 1965-01-19 | Xerox Corp | Image development |
US3166432A (en) * | 1959-05-07 | 1965-01-19 | Xerox Corp | Image development |
DE1187123B (en) * | 1958-11-28 | 1965-02-11 | Rank Xerox Ltd | Xerographic reproduction apparatus |
US3172827A (en) * | 1960-04-18 | 1965-03-09 | Permanent reproductions | |
US3172826A (en) * | 1960-04-18 | 1965-03-09 | Minnesota Mining & Mfg | Photoconductography employing organic onium cation |
US3174854A (en) * | 1959-04-08 | 1965-03-23 | Azoplate Corp | Electrophotographic reproduction material |
US3178281A (en) * | 1956-07-16 | 1965-04-13 | Eastman Kodak Co | Electrostatic color printing |
US3180730A (en) * | 1959-04-09 | 1965-04-27 | Azoplate Corp | Material for electrophotographic purposes |
US3180729A (en) * | 1956-12-22 | 1965-04-27 | Azoplate Corp | Material for electrophotographic reproduction |
US3182573A (en) * | 1961-08-11 | 1965-05-11 | Xerox Corp | Masked plate xerography |
DE1193515B (en) * | 1960-09-02 | 1965-05-26 | Rca Corp | Xerographic process for the production of an etched printing or circuit plate |
US3190199A (en) * | 1963-01-02 | 1965-06-22 | Xerox Corp | Xerographic copying apparatus |
US3196008A (en) * | 1962-05-08 | 1965-07-20 | Xerox Corp | Electrophotographic process for formation of frost-like deformation images in mechanically deformable photoconductive layers |
US3196029A (en) * | 1960-12-10 | 1965-07-20 | Kalle Aktiengeselslchaft | Heat-copying process |
US3199086A (en) * | 1960-11-25 | 1965-08-03 | Rahn Corp | Devices exhibiting internal polarization and apparatus for and methods of utilizing the same |
US3198632A (en) * | 1955-09-30 | 1965-08-03 | Minnesota Mining & Mfg | Electrophotography |
US3205354A (en) * | 1960-02-13 | 1965-09-07 | Azoplate Corp | Electrothermographic reproduction process |
US3206306A (en) * | 1959-04-09 | 1965-09-14 | Azoplate Corp | Material for electrophotographic purposes |
US3212889A (en) * | 1961-06-12 | 1965-10-19 | Xerox Corp | Xerographic contrast control |
US3212888A (en) * | 1961-06-12 | 1965-10-19 | Xerox Corp | Method for developing latent electrostatic charge halftone images |
US3226227A (en) * | 1960-09-02 | 1965-12-28 | Rca Corp | Method of producing a solvent-resistant pattern using developed electrostatic image formation techniques |
US3234019A (en) * | 1961-04-10 | 1966-02-08 | Xerox Corp | Method for formation of an electrostatic image resistant to deterioration on storage |
US3234018A (en) * | 1960-03-18 | 1966-02-08 | Lumoprint Zindler Kg | Method for developing copies using electrophotographic layers |
US3234017A (en) * | 1959-11-05 | 1966-02-08 | Agfa Ag | Process for the production of developed electrophotographic images including application of a breakdown potential to discrete small areas of a photoconductor |
US3234904A (en) * | 1962-06-15 | 1966-02-15 | Xerox Corp | Device for tesiprinting |
US3236640A (en) * | 1959-12-29 | 1966-02-22 | Azoplate Corp | Process for the preparation of printing plates using particularly a photoconductivemultilayer structure |
US3241957A (en) * | 1961-06-08 | 1966-03-22 | Harris Intertype Corp | Method of developing electrostatic images and liquid developer |
US3245823A (en) * | 1962-08-01 | 1966-04-12 | Xerox Corp | Electrostatic image development apparatus |
US3246983A (en) * | 1959-04-08 | 1966-04-19 | Azoplate Corp | Electrophotographic reproduction process |
DE1216692B (en) * | 1963-11-19 | 1966-05-12 | Dick Co Ab | Electrophotographic copying process and device for carrying out the process |
US3251706A (en) * | 1954-01-04 | 1966-05-17 | Xerox Corp | Xerographic development method and apparatus |
US3253913A (en) * | 1960-10-13 | 1966-05-31 | Eastman Kodak Co | Process for color electrophotography |
US3256791A (en) * | 1962-11-02 | 1966-06-21 | Azoplate Corp | Electrophotographic process and apparatus for the automatic and continuous reproduction of originals |
US3262806A (en) * | 1961-12-16 | 1966-07-26 | Azoplate Corp | Three component magnetic developer for electrophotographic purposes and method for using it |
US3275478A (en) * | 1963-02-21 | 1966-09-27 | Fmc Corp | Method of making a battery separator containing colloidal metal |
US3278323A (en) * | 1963-12-26 | 1966-10-11 | Dick Co Ab | Method of producing imaged spirit master directly from original |
US3279366A (en) * | 1955-03-31 | 1966-10-18 | Dick Co Ab | Aluminum photolithographic plate and method of imaging same |
US3280741A (en) * | 1958-12-31 | 1966-10-25 | Burroughs Corp | Electrostatic recording |
US3294531A (en) * | 1959-07-22 | 1966-12-27 | Azoplate Corp | Photoconductive layers for electrophotographic purposes |
US3301676A (en) * | 1963-10-12 | 1967-01-31 | Azoplate Corp | Process and material for the production of electrophotographic images |
US3305359A (en) * | 1962-10-04 | 1967-02-21 | Photoelectric Ltd | Manufacture of printing plates |
US3311490A (en) * | 1958-09-23 | 1967-03-28 | Harris Intertype Corp | Developing electrostatic charge image with a liquid developer of two immiscible phases |
US3321307A (en) * | 1963-07-15 | 1967-05-23 | Eastman Kodak Co | Exposure control in xerographic printing |
US3326709A (en) * | 1963-10-18 | 1967-06-20 | Eastman Kodak Co | Electrostatic printing |
US3329500A (en) * | 1965-06-07 | 1967-07-04 | Xerox Corp | Electrostatic frosting |
US3357830A (en) * | 1961-08-03 | 1967-12-12 | Xerox Corp | Dyed image xerography |
US3363558A (en) * | 1965-03-02 | 1968-01-16 | Everett A. Johnson | Tabulatable recording and duplicating master |
US3369917A (en) * | 1963-09-10 | 1968-02-20 | Daniel B. Granzow | Magnetic brush development of electrostatic images utilizing a high voltage corona |
US3379553A (en) * | 1964-03-20 | 1968-04-23 | Ibm | Continuous tone development method for xerographic printing |
US3386379A (en) * | 1962-04-04 | 1968-06-04 | Xerox Corp | Duplicating with color producing reagents |
DE1271548B (en) * | 1960-05-10 | 1968-06-27 | Zeiss Ikon Ag | Electrophotographic process |
US3391082A (en) * | 1965-04-06 | 1968-07-02 | Koppers Co Inc | Method of making xergographic toner compositions by emulsion polymerization |
US3399060A (en) * | 1963-04-16 | 1968-08-27 | Little Inc A | Electrophotographic product and method for achieving electrophotographic copying |
US3399140A (en) * | 1965-09-07 | 1968-08-27 | American Photocopy Equip Co | Liquid developer for electrostatic printing |
US3406063A (en) * | 1964-03-11 | 1968-10-15 | Australia Res Lab | Xerographic material containing an inorganic photoconductor and nonpolymeric crystalline organic substances and methods of using of such material |
US3411903A (en) * | 1964-11-23 | 1968-11-19 | Xerox Corp | Xerographic method and plate comprising photoconductive insulating fibers |
US3414409A (en) * | 1965-04-30 | 1968-12-03 | Xerox Corp | Particle transfer |
US3415186A (en) * | 1966-02-10 | 1968-12-10 | Xerox Corp | Duplicating system |
US3419411A (en) * | 1963-09-06 | 1968-12-31 | Australia Res Lab | Method for the transfer of developed electrostatic images using a lattice forming substance |
US3441437A (en) * | 1958-02-12 | 1969-04-29 | Burroughs Corp | Recording medium and process of developing latent electrostatic image on a recording medium |
US3450564A (en) * | 1968-04-01 | 1969-06-17 | Gen Electrodynamics Corp | Making photoconductive target of selenium and sulphur |
US3455240A (en) * | 1965-09-13 | 1969-07-15 | Xerox Corp | Imaging system |
US3468254A (en) * | 1964-05-28 | 1969-09-23 | Gerhard Ritzerfeld | Electrostatically chargeable printing form |
US3473923A (en) * | 1965-04-14 | 1969-10-21 | Fuji Photo Film Co Ltd | Reproduction process including transfer and redevelopment of electrostatically formed images |
US3479268A (en) * | 1966-08-01 | 1969-11-18 | Gen Electric | Method of applying a binder to electro phoretically deposited porous matrix |
US3482970A (en) * | 1966-01-21 | 1969-12-09 | Xerox Corp | Electrophotographic plate and process using naphthylazo compounds as the primary photoconductor |
US3486889A (en) * | 1966-02-07 | 1969-12-30 | Harris Intertype Corp | Cellulosic photoconductive imaging member containing carboxyl reactive groups |
US3490903A (en) * | 1966-07-20 | 1970-01-20 | Xerox Corp | Alloys of antimony and selenium used in photoconductive elements |
US3493412A (en) * | 1965-12-30 | 1970-02-03 | Xerox Corp | Transferring xerographic toner images to a solid crystalline plasticizer coated receiving surface |
US3502582A (en) * | 1967-06-19 | 1970-03-24 | Xerox Corp | Imaging systems |
US3510338A (en) * | 1965-08-06 | 1970-05-05 | Inmont Corp | Method of electrostatic printing |
US3518081A (en) * | 1964-02-17 | 1970-06-30 | Xerox Corp | Image formation and development |
US3519420A (en) * | 1966-06-28 | 1970-07-07 | Xerox Corp | Method of charging a zinc oxide photoconductive layer with a positive charge |
US3523813A (en) * | 1965-09-02 | 1970-08-11 | Willy Koller | Application of a printed impression of metal powder onto articles |
US3533788A (en) * | 1967-08-25 | 1970-10-13 | Minnesota Mining & Mfg | Image recording sheet |
US3547631A (en) * | 1967-10-26 | 1970-12-15 | Hughes Aircraft Co | Pacification of image recording media comprising applying a thin polymer film over the image surface |
DE2032652A1 (en) * | 1969-07-01 | 1971-01-14 | Xerox Corp , Rochester, N Y (VStA) | Composition of substances for improving the electrical properties of a photoconductor used for electrophotographic purposes and the process used therefor |
US3561358A (en) * | 1966-10-10 | 1971-02-09 | Xerox Corp | Gravure imaging system |
US3569803A (en) * | 1967-08-15 | 1971-03-09 | Fuji Photo Film Co Ltd | Electrophotographic process utilizing friction charging |
US3592541A (en) * | 1968-09-30 | 1971-07-13 | Gourdine Systems Inc | Copying system using electrogasdynamics |
US3607259A (en) * | 1967-01-06 | 1971-09-21 | Australia Res Lab | Package of charged photoconductive recording elements for electrophotography |
US3640749A (en) * | 1968-03-14 | 1972-02-08 | Philips Corp | Method of fixing images consisting of dry powders on paper |
DE2132017A1 (en) * | 1970-06-29 | 1972-02-10 | Xerox Corp | Electrophotographic copier paper |
US3650797A (en) * | 1960-07-27 | 1972-03-21 | Kalle Ag | Developing electrostatic latent images with a mixture of positive and negative toners |
US3650754A (en) * | 1969-07-31 | 1972-03-21 | Keuffel & Esser Co | Photoresist compositions containing limed rosin and photoactinator |
US3654865A (en) * | 1969-02-05 | 1972-04-11 | Fuji Photo Film Co Ltd | Method for forming dye image using an electrophotographic developer containing a gelatin toner |
US3669850A (en) * | 1969-07-18 | 1972-06-13 | Cedo Draca | Method for the production of abrasive brushing elements |
US3718593A (en) * | 1969-02-05 | 1973-02-27 | Fuji Photo Film Co Ltd | Process for the production of an electrophotographic liquid developer containing gelatin |
US3755177A (en) * | 1969-02-04 | 1973-08-28 | Xerox Corp | Process of making liquid electrostatic developers containing gelatin |
US3764538A (en) * | 1964-04-06 | 1973-10-09 | Addressograph Multigraph | Electroscopic printing powder |
US3791823A (en) * | 1965-05-28 | 1974-02-12 | Xerox Corp | Photoelectrophoretic imaging transfer method |
US3884687A (en) * | 1966-02-14 | 1975-05-20 | Union Carbide Corp | Electrostatic printing process |
US3907559A (en) * | 1969-10-03 | 1975-09-23 | Xerox Corp | Imaging process employing friction charging in the presence of an electrically insulating developer liquid |
US3933488A (en) * | 1972-05-17 | 1976-01-20 | Fuji Photo Film Co., Ltd. | Information display method |
US3935008A (en) * | 1972-06-23 | 1976-01-27 | Hoechst Aktiengesellschaft | Electrophotographic process having developed hydrophilic image areas |
US3951652A (en) * | 1973-07-17 | 1976-04-20 | Fuji Photo Film Co., Ltd. | Method of forming image on sulfur based photosensitive member |
US3958989A (en) * | 1973-06-06 | 1976-05-25 | Xerox Corporation | Transparency support material for electrophotographic process |
US3958988A (en) * | 1974-02-19 | 1976-05-25 | A. B. Dick Company | Photoconductors having improved sensitivity by presence of a like polar fields during imaging |
US3960555A (en) * | 1964-10-12 | 1976-06-01 | Xerox Corporation | Photographic charging and imaging process |
US3959934A (en) * | 1974-10-04 | 1976-06-01 | Xerox Corporation | Composition and method for repairing selenium photoreceptors |
US3965021A (en) * | 1966-01-14 | 1976-06-22 | Xerox Corporation | Electrostatographic toners using block copolymers |
US3967959A (en) * | 1970-12-14 | 1976-07-06 | Xerox Corporation | Migration imaging system |
US3971658A (en) * | 1973-03-14 | 1976-07-27 | Xerox Corporation | Imaging process employing friction charging in the presence of an electrically insulating liquid |
US3977871A (en) * | 1975-08-15 | 1976-08-31 | International Business Machines Corporation | Electrophotographic developer with fibers of polytetrafluoroethylene |
US4012250A (en) * | 1970-01-02 | 1977-03-15 | Xerox Corporation | Imaging system |
US4014696A (en) * | 1975-02-05 | 1977-03-29 | Xerox Corporation | Multicolored xerographic transparency utilizing an aliphatic ester coating |
US4021358A (en) * | 1974-07-12 | 1977-05-03 | Konishiroku Photo Industry Co., Ltd. | Toner for developing electrostatic latent images |
USRE29357E (en) * | 1964-02-17 | 1977-08-16 | Xerox Corporation | Image formation and development |
US4046505A (en) * | 1968-04-08 | 1977-09-06 | Imperial Chemical Industries Limited | Post dyeing resin particles fixed to resin base |
DE1797620B1 (en) * | 1966-06-29 | 1977-11-10 | Xerox Corp | ELECTROPHORETOPHOTOGRAPHIC IMAGING PROCEDURE |
DE2733187A1 (en) * | 1976-07-23 | 1978-01-26 | Ricoh Kk | SELENIUM BASED PHOTO-SENSITIVE MATERIAL FOR ELECTROPHOTOGRAPHY |
US4081273A (en) * | 1970-01-02 | 1978-03-28 | Xerox Corporation | Migration imaging method |
DE2803618A1 (en) * | 1977-01-28 | 1978-08-03 | Canon Kk | PROCESS AND EQUIPMENT FOR DEVELOPMENT OF ELECTROSTATIC CHARGE PATTERNS |
DE2911290A1 (en) * | 1978-05-15 | 1979-11-22 | Xerox Corp | A FIXED STITCHING MACHINE HEAD |
DE2920291A1 (en) * | 1978-09-20 | 1980-04-10 | Xerox Corp | BELT TENSIONING SYSTEM |
DE3008881A1 (en) * | 1979-03-09 | 1980-09-18 | Canon Kk | DEVELOPMENT PROCEDURE |
US4226930A (en) * | 1978-11-08 | 1980-10-07 | Nippon Paint Co., Ltd. | Electrophotographic method for producing photopolymer printing plate |
DE2950483A1 (en) * | 1979-12-14 | 1981-06-19 | Siemens AG, 1000 Berlin und 8000 München | Flaw detection in electrophotographic photoconductor drum coating - by electrostatic charging to form halo on coating and enlarging by Lichtenberg figure |
US4299898A (en) * | 1979-05-03 | 1981-11-10 | Xerox Corporation | Positively charged toners containing quaternary ammonium salts attached to acrylate polymers |
US4314017A (en) * | 1978-01-26 | 1982-02-02 | Canon Kabushiki Kaisha | Developer without carrier powder having an improved triboelectric charging property |
DE3111558A1 (en) * | 1980-03-25 | 1982-02-04 | Canon K.K., Tokyo | METHOD AND DEVICE FOR GENERATING AND RECORDING COMPOSED IMAGES |
DE3117210A1 (en) * | 1980-04-30 | 1982-02-18 | Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa | TRANSMISSION DEVICE |
US4337303A (en) * | 1980-08-11 | 1982-06-29 | Minnesota Mining And Manufacturing Company | Transfer, encapsulating, and fixing of toner images |
US4340660A (en) * | 1979-04-24 | 1982-07-20 | Canon Kabushiki Kaisha | Toner for development having crosslinked polymers |
US4359516A (en) * | 1978-03-28 | 1982-11-16 | E. I. Du Pont De Nemours And Company | Magnetic resist printing process, composition, and apparatus |
US4374212A (en) * | 1981-07-29 | 1983-02-15 | Xerox Corporation | Sheet handling device |
US4391512A (en) * | 1979-01-06 | 1983-07-05 | Canon Kabushiki Kaisha | Developing device using magnetic developer |
DE3331592A1 (en) | 1982-09-01 | 1984-03-01 | Fuji Photo Film Co., Ltd., Minamiashigara, Kanagawa | DISAZO CONNECTIONS AND PHOTO-CONDUCTIVE COMPOSITIONS CONTAINING THEM AND ELECTROPHOTOGRAPHIC LIGHT-SENSITIVE RECORDING MATERIALS |
US4459344A (en) * | 1970-12-21 | 1984-07-10 | Ezekiel Jacob J | Method for producing raised images by xerographic means |
US4470693A (en) * | 1982-01-11 | 1984-09-11 | Pitney Bowes Inc. | Self-cleaning xerographic apparatus |
US4472491A (en) * | 1981-05-30 | 1984-09-18 | Hoechst Aktiengesellschaft | Electrophotographic recording material having protective layer and process for the production thereof |
US4481274A (en) * | 1980-11-11 | 1984-11-06 | Canon Kabushiki Kaisha | Developing powder having oinylic, crosslinked binder and olefin polymer |
US4499168A (en) * | 1979-07-17 | 1985-02-12 | Canon Kabushiki Kaisha | Fixing method |
US4504563A (en) * | 1979-04-09 | 1985-03-12 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic latent image containing copolymer of vinyl compound and acid monomer |
US4507376A (en) * | 1982-07-23 | 1985-03-26 | Arakawa Kagaku Kogyo Kabushiki Kaisha | Electrophotographic toner composition |
US4518672A (en) * | 1982-05-21 | 1985-05-21 | Canon Kabushiki Kaisha | Cyan color toner for developing electrostatic image |
US4533616A (en) * | 1982-06-01 | 1985-08-06 | Canon Kabushiki Kaisha | Developer for electrophotography of toner and microencapsulated additive |
US4533617A (en) * | 1982-05-26 | 1985-08-06 | Canon Kabushiki Kaisha | Heat fixing developer of capsule structure |
US4533614A (en) * | 1982-06-01 | 1985-08-06 | Canon Kabushiki Kaisha | Heat-fixable dry system toner |
DE3514835A1 (en) | 1984-04-28 | 1985-10-31 | Canon K.K., Tokio/Tokyo | Binder resin for toner useful in electrophotography etc. |
US4590139A (en) * | 1982-09-27 | 1986-05-20 | Canon Kabushiki Kaisha | Three color toner kit and method of use |
US4599289A (en) * | 1982-05-27 | 1986-07-08 | Canon Kabushiki Kaisha | Pressure-fixable encapsulated toner |
EP0201923A2 (en) * | 1985-05-15 | 1986-11-20 | Lichtenberg & Co Chemische Fabrik Zweigniederlassung der UK-Mineralölwerke Wenzel & Weidmann GmbH, Eschweiler | Method for coating solid bodies with lubricants |
US4705696A (en) * | 1984-09-27 | 1987-11-10 | Olin Hunt Specialty Products Inc. | Method of making a lithographic printing plate, printing plates made by the method, and the use of such printing plates to make lithographic prints |
US4731634A (en) * | 1986-11-03 | 1988-03-15 | Xerox Corporation | Apparatus for printing black and plural highlight color images in a single pass |
US4737431A (en) * | 1984-08-29 | 1988-04-12 | Faco Corporation Ltd. | Negative-electrification finely-divided toner in use for electrophotography |
US4761668A (en) * | 1986-09-29 | 1988-08-02 | Xerox Corporation | Highlight color printer |
US4761672A (en) * | 1987-07-28 | 1988-08-02 | Xerox Corporation | Ramped developer biases |
US4771314A (en) * | 1986-12-29 | 1988-09-13 | Xerox Corporation | Developer apparatus for a highlight printing apparatus |
US4786939A (en) * | 1985-08-23 | 1988-11-22 | Konishiroku Photo Industry Co., Ltd. | Image forming apparatus |
US4857433A (en) * | 1984-01-17 | 1989-08-15 | Mitsui Toatsu Chemicals, Incorporated | Electrophotographic toner for high speed electrophotography |
US4859411A (en) * | 1988-04-08 | 1989-08-22 | Xerox Corporation | Control of selenium alloy fractionation |
US4863825A (en) * | 1986-11-10 | 1989-09-05 | Toyo Ink Manufacturing Co., Ltd. | Low temperature electrophotographic toner composition comprising nonlinear polyester resin |
US4877704A (en) * | 1984-05-31 | 1989-10-31 | Konishiroku Photo Industry Co., Ltd. | Process for developing latent electrostatic image using toner containing polyester resin |
US4931375A (en) * | 1986-07-22 | 1990-06-05 | Konishiroku Photo Industry Co., Ltd. | Powdered electrostatic image developing toner |
US4946755A (en) * | 1982-04-01 | 1990-08-07 | Canon Kabushiki Kaisha | Electrophotographic one component magnetic toner comprising hydrophobic silica and iron oxide |
US4966829A (en) * | 1986-09-08 | 1990-10-30 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, binder therefor and process for production thereof |
US4978596A (en) * | 1985-03-25 | 1990-12-18 | Hitachi, Ltd. | Electrophotographic toner comprising lactone-modified epoxy resin |
US4988591A (en) * | 1988-05-06 | 1991-01-29 | Hoechst Aktiengesellschaft | Process for producing color images |
US5021318A (en) * | 1989-07-28 | 1991-06-04 | Xerox Corporation | Process for forming secure images |
US5066558A (en) * | 1988-09-30 | 1991-11-19 | Canon Kabushiki Kaisha | Developer for developing electrostatic images |
EP0466149A1 (en) | 1990-07-12 | 1992-01-15 | Canon Kabushiki Kaisha | Toner, developer, and image forming method |
US5084369A (en) * | 1989-03-13 | 1992-01-28 | Canon Kabushiki Kaisha | Toner containing a dimer of diarylguanidine type compound for developing electrostatic image |
US5106715A (en) * | 1988-02-10 | 1992-04-21 | Fuji Xerox Co., Ltd. | Toner composition with polyethylene and inorganic external additive |
US5112714A (en) * | 1984-08-30 | 1992-05-12 | Canon Kabushiki Kaisha | Dry magnetic electrostatic developer |
US5126224A (en) * | 1989-09-14 | 1992-06-30 | Canon Kabushiki Kaisha | Electrostatic image developing toner and process for its production, and binder resin and process for its production |
US5135833A (en) * | 1990-01-19 | 1992-08-04 | Canon Kabushiki Kaisha | Electrostatic image developing toner and fixing method |
US5147753A (en) * | 1989-09-19 | 1992-09-15 | Canon Kabushiki Kaisha | Process for producing toner for developing electrostatic image |
US5166041A (en) * | 1990-07-23 | 1992-11-24 | Showa Denko K.K. | Near infrared ray-decolorizable recording material |
US5169738A (en) * | 1989-11-09 | 1992-12-08 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, image forming method and image forming apparatus |
US5173387A (en) * | 1988-11-02 | 1992-12-22 | Kao Corporation | Electrophotographic dry developer |
US5175070A (en) * | 1989-09-27 | 1992-12-29 | Canon Kabushiki Kaisha | Image forming method and image forming apparatus |
US5180649A (en) * | 1989-11-09 | 1993-01-19 | Canon Kabushiki Kaisha | Toner having crosslinkages and method of fixing same |
US5185496A (en) * | 1990-03-02 | 1993-02-09 | Canon Kabushiki Kaisha | Electrostatic latent image device having a coating layer provided on a developer carrying member |
US5202213A (en) * | 1988-08-31 | 1993-04-13 | Canon Kabushiki Kaisha | Developer with surface treated silicic acid for developing electrostatic image |
US5202731A (en) * | 1989-09-27 | 1993-04-13 | Canon Kabushiki Kaisha | Image forming apparatus having an alternating bias electric field |
US5208093A (en) * | 1991-03-29 | 1993-05-04 | Minnesota Mining And Manufacturing Company | Film construction for use in a plain paper copier |
EP0541113A1 (en) | 1991-11-08 | 1993-05-12 | Canon Kabushiki Kaisha | Monocomponent-type developer for developing electrostatic image and image forming method |
US5212524A (en) * | 1989-11-09 | 1993-05-18 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, image forming method and image forming apparatus |
US5214208A (en) * | 1989-03-13 | 1993-05-25 | Canon Kabushiki Kaisha | Toner containing a dimer of diarylguanidine type compound for developing electrostatic image |
US5215848A (en) * | 1989-10-31 | 1993-06-01 | Canon Kabushiki Kaisha | Carrier for electrophotography, two-component type developer, process for producing carrier and image forming method |
US5215854A (en) * | 1988-10-05 | 1993-06-01 | Canon Kabushiki Kaisha | Process for producing microcapsule toner |
US5217836A (en) * | 1989-11-09 | 1993-06-08 | Canon Kabushiki Kaisha | Toner for developing electrostatic images |
US5219946A (en) * | 1989-11-09 | 1993-06-15 | Canon Kk | Binder resin and process for producing it |
US5219697A (en) * | 1990-03-08 | 1993-06-15 | Canon Kabushiki Kaisha | Toner for developing electrostatic image comprising color resin particles having an irregular shape |
US5225308A (en) * | 1990-04-11 | 1993-07-06 | Kao Corporation | Encapsulated toner for heat-and-pressure fixing |
US5234787A (en) * | 1991-01-18 | 1993-08-10 | Kao Corporation | Developer composition for electrophotography |
US5234788A (en) * | 1991-01-18 | 1993-08-10 | Kao Corporation | Developer composition for electrophotography |
US5241019A (en) * | 1990-07-30 | 1993-08-31 | Mitsui Toatsu Chemicals, Inc. | Binder for dry toner |
US5246810A (en) * | 1989-10-18 | 1993-09-21 | Canon Kabushiki Kaisha | Guanidine type compound, toner for developing electrostatic images, developer for developing electrostatic images |
US5250382A (en) * | 1990-12-25 | 1993-10-05 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, and image fixing method |
US5260748A (en) * | 1990-12-14 | 1993-11-09 | Infographix, Inc. | Electrostatic image developer dispenser |
US5262259A (en) * | 1990-01-03 | 1993-11-16 | Minnesota Mining And Manufacturing Company | Toner developed electrostatic imaging process for outdoor signs |
US5268248A (en) * | 1990-11-30 | 1993-12-07 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and process for production thereof |
US5283148A (en) * | 1992-09-18 | 1994-02-01 | Minnesota Mining And Manufacturing Company | Liquid toners for use with perfluorinated solvents |
US5288579A (en) * | 1990-11-30 | 1994-02-22 | Canon Kabushiki Kaisha | Developer for developing electrostatic image, image forming apparatus, apparatus unit and facsimile apparatus |
US5298309A (en) * | 1991-11-05 | 1994-03-29 | Minnesota Mining And Manufacturing Company | Film construction for use in a plain paper copier |
US5300386A (en) * | 1991-03-22 | 1994-04-05 | Canon Kabushiki Kaisha | Developer for developing electrostatic image, image forming method and heat fixing method |
US5306588A (en) * | 1991-03-19 | 1994-04-26 | Canon Kabushiki Kaisha | Treated silica fine powder and toner for developing electrostatic images |
US5318872A (en) * | 1993-04-02 | 1994-06-07 | Xerox Corporation | Toner and developer compositions with fluorophosphate charge enhancing additives |
US5321091A (en) * | 1989-05-29 | 1994-06-14 | Canon Kabushiki Kaisha | Binder resin used in a toner |
US5322752A (en) * | 1986-04-15 | 1994-06-21 | Xerox Corporation | Development process for abrasion resistant documents |
US5330870A (en) * | 1991-09-07 | 1994-07-19 | Kao Corporation | Developer composition for electrophotography for flash fusing |
US5330871A (en) * | 1990-11-29 | 1994-07-19 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5332640A (en) * | 1992-07-31 | 1994-07-26 | Xerox Corporation | Toner compositions with dendrimer charge enhancing additives |
US5338638A (en) * | 1990-11-29 | 1994-08-16 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and process for production thereof |
US5338894A (en) * | 1990-09-21 | 1994-08-16 | Canon Kabushiki Kaisha | Image forming method with improved development |
US5354640A (en) * | 1991-09-25 | 1994-10-11 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5363180A (en) * | 1991-05-17 | 1994-11-08 | Hitachi, Ltd. | Fixing device for electrophotography and electrophotographic apparatus incorporating the fixing device |
US5364722A (en) * | 1991-09-11 | 1994-11-15 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and heat-fixing method comprising a hydrocarbon wax |
US5378570A (en) * | 1993-01-05 | 1995-01-03 | Fuji Xerox Co., Ltd. | Electrophotographic photoreceptor |
US5384224A (en) * | 1992-03-06 | 1995-01-24 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5389484A (en) * | 1991-04-16 | 1995-02-14 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, image forming apparatus, apparatus unit and facsimile apparatus |
US5389487A (en) * | 1990-11-29 | 1995-02-14 | Canon Kabushiki Kaisha | Image forming process, image-forming apparatus, apparatus unit, and facsimile apparatus |
US5391247A (en) * | 1992-01-24 | 1995-02-21 | Revlon Consumer Products Corporation | Hot stamping glass |
US5391450A (en) * | 1990-07-31 | 1995-02-21 | Canon Kabushiki Kaisha | Toner image heat-fixing method |
US5406357A (en) * | 1992-06-19 | 1995-04-11 | Canon Kabushiki Kaisha | Developer for developing electrostatic image, image forming method, image forming apparatus and apparatus unit |
US5407769A (en) * | 1989-07-28 | 1995-04-18 | Canon Kabushiki Kaisha | Magnetic toner having triaryl methyl organic resin |
US5418102A (en) * | 1990-11-29 | 1995-05-23 | Canon Kabushiki Kaisha | Developer for developing electrostatic image, image forming method, toner imager fixing method and image forming apparatus |
US5422215A (en) * | 1989-10-17 | 1995-06-06 | Canon Kabushiki Kaisha | Magnetic toner |
US5424810A (en) * | 1991-09-13 | 1995-06-13 | Canon Kabushiki Kaisha | Magnetic toner, magnetic developer, apparatus unit, image forming apparatus and facsimile apparatus |
EP0658819A2 (en) | 1993-11-30 | 1995-06-21 | Canon Kabushiki Kaisha | Toner and developer for developing electrostatic image, process for production thereof and image forming method |
US5436701A (en) * | 1992-06-19 | 1995-07-25 | Canon Kabushiki Kaisha | Image forming method, image forming apparatus and apparatus unit |
US5437949A (en) * | 1993-06-28 | 1995-08-01 | Canon Kabushiki Kaisha | Color toner and process for its production |
US5439769A (en) * | 1992-12-16 | 1995-08-08 | Seiko Epson Corporation | Developing method and system |
US5439771A (en) * | 1992-07-28 | 1995-08-08 | Canon Kabushiki Kaisha | Carrier for use in electrophotography, two component-type developer and image forming method |
US5439770A (en) * | 1993-04-20 | 1995-08-08 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, image forming apparatus and process cartridge |
US5447815A (en) * | 1992-06-04 | 1995-09-05 | Canon Kabushiki Kaisha | Developer for developing electrostatic image and image forming method |
US5447813A (en) * | 1992-06-19 | 1995-09-05 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and image forming method |
EP0683436A1 (en) | 1994-05-17 | 1995-11-22 | Minnesota Mining And Manufacturing Company | Liquid toners utilizing highly fluorinated solvents |
US5470687A (en) * | 1993-04-28 | 1995-11-28 | Canon Kabushiki Kaisha | Process for producing toner particles using free space formed in a polymeric medium |
EP0686882A1 (en) | 1994-05-13 | 1995-12-13 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, process cartridge, and image forming method |
EP0686885A1 (en) | 1994-06-02 | 1995-12-13 | Canon Kabushiki Kaisha | Toner for developing electrostatic images |
US5476745A (en) * | 1991-09-09 | 1995-12-19 | Canon Kabushiki Kaisha | Process for producing toner particles |
EP0687960A1 (en) | 1994-06-14 | 1995-12-20 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and image forming method |
EP0692749A2 (en) | 1994-07-13 | 1996-01-17 | Hitachi, Ltd. | Electrophotographic copying apparatus |
US5489498A (en) * | 1993-01-20 | 1996-02-06 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and method of manufacturing resin composition |
EP0699963A1 (en) | 1994-08-05 | 1996-03-06 | Canon Kabushiki Kaisha | Magnetic toner and image forming method |
US5503904A (en) * | 1993-01-19 | 1996-04-02 | Canon Kabushiki Kaisha | Invisible information recorded medium |
US5508139A (en) * | 1993-03-25 | 1996-04-16 | Canon Kabushiki Kaisha | Magnetic toner for developing electrostatic image |
EP0707239A1 (en) | 1994-09-21 | 1996-04-17 | Canon Kabushiki Kaisha | Toner for developing electronstatic images, image forming method and process cartridge |
US5510222A (en) * | 1993-05-20 | 1996-04-23 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and process for production thereof |
EP0708378A2 (en) | 1994-10-05 | 1996-04-24 | Canon Kabushiki Kaisha | Two-component type developer, developing method and image forming method |
EP0708376A2 (en) | 1994-10-05 | 1996-04-24 | Canon Kabushiki Kaisha | Two-component type developer, developing method and image forming method |
US5512406A (en) * | 1993-10-14 | 1996-04-30 | Canon Kabushiki Kaisha | Toners of different size for electrophotography |
US5512402A (en) * | 1993-05-20 | 1996-04-30 | Canon Kabushiki Kaisha | Carrier for electrophotography, two-component type developer, and image forming method |
US5517286A (en) * | 1993-01-28 | 1996-05-14 | Canon Kabushiki Kaisha | Developing apparatus |
EP0713153A2 (en) | 1994-11-08 | 1996-05-22 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, two component type developer, developing method, image forming method, heat fixing method, and process for producing toner |
DE3546817C2 (en) * | 1984-04-28 | 1996-05-23 | Canon Kk | Binder resin for toner useful in electrophotography etc. |
US5521271A (en) * | 1994-09-29 | 1996-05-28 | Minnesota Mining And Manufacturing Company | Liquid toners with hydrocarbon solvents |
US5523533A (en) * | 1993-05-28 | 1996-06-04 | Canon Kabushiki Kaisha | Developing device which restricts carrier using developing agent regulating rotary member |
EP0715216A1 (en) | 1994-11-24 | 1996-06-05 | Fuji Electric Co., Ltd. | Titanyloxyphthalocyanine crystals, methods for preparing the same, and electrophotographic photoreceptors using such crystals |
EP0716351A2 (en) | 1994-11-28 | 1996-06-12 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5529873A (en) * | 1993-04-20 | 1996-06-25 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and process for producing toner |
EP0718703A2 (en) | 1994-12-21 | 1996-06-26 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5535185A (en) * | 1993-01-21 | 1996-07-09 | Canon Kabushiki Kaisha | Information recording/reproduction apparatus using probe |
US5536612A (en) * | 1993-03-10 | 1996-07-16 | Kao Corporation | Encapsulated toner for heat-and-pressure fixing and method for production thereof |
US5547796A (en) * | 1992-05-27 | 1996-08-20 | Canon Kabushiki Kaisha | Developer containing insulating magnetic toner flowability-improving agent and inorganic fine powder |
US5558967A (en) * | 1991-09-19 | 1996-09-24 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and two-component type developer for developing electrostatic image |
US5565293A (en) * | 1994-03-09 | 1996-10-15 | Kao Corporation | Encapsulated toner for heat-and-pressure fixing |
US5565291A (en) * | 1993-03-25 | 1996-10-15 | Canon Kabushiki Kaisha | Carrier for use in electrophotography and two component-type developer containing the carrier |
US5567567A (en) * | 1993-11-05 | 1996-10-22 | Kao Corporation | Method for producing encapsulated toner for heat-and-pressure fixing and encapsulated toner obtained thereby |
US5571652A (en) * | 1993-09-01 | 1996-11-05 | Kao Corporation | Encapsulated toner for heat-and-pressure fixing and method for producing the same |
US5571653A (en) * | 1993-10-20 | 1996-11-05 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, and process for its production |
US5573880A (en) * | 1993-12-29 | 1996-11-12 | Canon Kabushiki Kaisha | Carrier for electrophotography, process for its production, two-component type developer, and image forming method |
US5576133A (en) * | 1992-07-22 | 1996-11-19 | Canon Kabushiki Kaisha | Carrier for use in electrophotography, two component-type developer and image forming method |
US5578408A (en) * | 1993-12-29 | 1996-11-26 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5578409A (en) * | 1993-01-11 | 1996-11-26 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, one component-type developer and two-component type developer |
US5578407A (en) * | 1993-10-29 | 1996-11-26 | Canon Kabushiki Kaisha | Color toner for developing electrostatic images, process for its production, and color image forming method |
US5582950A (en) * | 1992-12-18 | 1996-12-10 | Fujitsu Limited | Process for producing flash fusing color toner |
US5585483A (en) * | 1994-01-11 | 1996-12-17 | Fuji Electric., Ltd. | Metal-free phythalocyanine, process for preparing the same, and electrophotographic photoconductor using the same |
US5592266A (en) * | 1994-09-08 | 1997-01-07 | Samsung Electronics Co., Ltd. | Electrophotographic process cartridge |
US5604070A (en) * | 1995-02-17 | 1997-02-18 | Minnesota Mining And Manufacturing Company | Liquid toners with hydrocarbon solvents |
US5604074A (en) * | 1993-03-15 | 1997-02-18 | Kao Corporation | Method of development of nonmagnetic one-component toner and method for forming fixed images using the development |
US5604071A (en) * | 1991-07-16 | 1997-02-18 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5607805A (en) * | 1994-07-18 | 1997-03-04 | Kao Corporation | Toner for electrophotography and developer composition containing the same |
US5618648A (en) * | 1994-09-19 | 1997-04-08 | Fujitsu Limited | Toner binder, toner, electrophotographic method and apparatus therefor |
EP0772093A1 (en) | 1995-10-30 | 1997-05-07 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, process-cartridge and image forming method |
US5629122A (en) * | 1992-08-25 | 1997-05-13 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and image forming method |
EP0774696A2 (en) | 1995-11-20 | 1997-05-21 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, image forming method and process-cartridge |
EP0774695A1 (en) | 1995-11-20 | 1997-05-21 | Canon Kabushiki Kaisha | Toner for developing electrostatic images |
US5634181A (en) * | 1993-02-16 | 1997-05-27 | Fuji Xerox Co., Ltd. | Developing apparatus |
US5635326A (en) * | 1994-02-10 | 1997-06-03 | Canon Kabushiki Kaisha | Electrostatic image-developing toner, fine powdery titanium oxide, and hydrophobic fine powdery titanium oxide |
EP0784237A2 (en) | 1996-01-10 | 1997-07-16 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, apparatus unit and image forming method |
US5663026A (en) * | 1993-10-08 | 1997-09-02 | Canon Kabushiki Kaisha | Magnetic toner, process cartridge and image forming method |
US5665513A (en) * | 1995-08-30 | 1997-09-09 | Canon Kabushiki Kaisha | Toner for developing electrostatic charged image |
US5679490A (en) * | 1995-05-31 | 1997-10-21 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, and process for producing the same |
US5700616A (en) * | 1995-02-01 | 1997-12-23 | Canon Kabushiki Kaisha | Developer for developing an electrostatic image and image forming method |
US5700617A (en) * | 1995-10-12 | 1997-12-23 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and charge-controlling agent |
US5712072A (en) * | 1995-02-28 | 1998-01-27 | Canon Kabusbiki Kaisha | Toner for developing electrostatic image |
US5716746A (en) * | 1991-06-19 | 1998-02-10 | Canon Kabushiki Kaisha | Magnetic toner and process for producing magnetic toner |
US5716751A (en) * | 1996-04-01 | 1998-02-10 | Xerox Corporation | Toner particle comminution and surface treatment processes |
US5744278A (en) * | 1996-04-09 | 1998-04-28 | Canon Kabushiki Kaisha | Toner for developing an electrostatic image and process for producing a toner |
US5747213A (en) * | 1995-05-31 | 1998-05-05 | Canon Kabushiki Kaisha | Image forming method and heat fixing method using a toner including a wax |
US5747209A (en) * | 1995-05-02 | 1998-05-05 | Canon Kabushiki Kaisha | Toner for developing electrostatic images containing aromatic hydroxycarboxylic acid and metal compound of the aromatic hydroxycarboxylic acid |
US5750304A (en) * | 1995-04-28 | 1998-05-12 | Kao Corporation | Encapsulated toner for heat-and-pressure fixing and method for producing the same |
US5750303A (en) * | 1995-05-22 | 1998-05-12 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5750302A (en) * | 1996-03-22 | 1998-05-12 | Canon Kabushiki Kaisha | Magnetic toner for developing electrostatic image, image forming process, and process cartridge |
US5753399A (en) * | 1995-05-15 | 1998-05-19 | Canon Kabushiki Kaisha | Toner for developing electrostatic image containing crosslined styrene copolymer and a new-crosslinked or crosslinked polyester resin |
US5766813A (en) * | 1992-12-16 | 1998-06-16 | Seiko Epson Corporation | Developing method and system for transferring toner from a toner carrier member to a latent image carrier |
US5795694A (en) * | 1995-05-19 | 1998-08-18 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5802440A (en) * | 1995-06-30 | 1998-09-01 | Canon Kabushiki Kaisha | Cleaning apparatus for cleaning heat fixing member, heat fixing method and image forming method |
US5827632A (en) * | 1994-12-05 | 1998-10-27 | Canon Kabushiki Kaisha | Toner for developing electrostatic image containing hydrophobized inorganic fine powder |
US5840459A (en) * | 1995-06-15 | 1998-11-24 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and process for production thereof |
US5846682A (en) * | 1993-03-02 | 1998-12-08 | Showa Denko K.K. | Light decolorizable recording material, ink and toner |
US5849453A (en) * | 1992-06-08 | 1998-12-15 | Canon Kabushiki Kaisha | Image forming method including recycling of untransferred toner collected from image bearing member to developing means |
US5851714A (en) * | 1996-04-02 | 1998-12-22 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and fixing method |
US5853938A (en) * | 1991-01-11 | 1998-12-29 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5858597A (en) * | 1995-09-04 | 1999-01-12 | Canon Kabushiki Kaisha | Toner for developing electrostatic image containing specified double oxide particles |
US5874570A (en) * | 1995-11-10 | 1999-02-23 | Fuji Electric Co., Ltd. | Titanyloxyphthalocyanine crystals, and method of preparing the same |
US5885742A (en) * | 1993-10-15 | 1999-03-23 | Canon Kabushiki Kaisha | Carrier for electrophotography, two-component type developer, and image forming method |
US5916726A (en) * | 1997-02-10 | 1999-06-29 | Canon Kabushiki Kaisha | Process for producing toner for developing electrostatic images |
US5922500A (en) * | 1996-11-19 | 1999-07-13 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5935751A (en) * | 1996-06-27 | 1999-08-10 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic latent image, process for manufacturing the same, developer for electrostatic latent image, and image-forming method |
US5955234A (en) * | 1996-10-09 | 1999-09-21 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, and image forming method |
US5962176A (en) * | 1993-12-24 | 1999-10-05 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, image forming method and process-cartridge |
US5976752A (en) * | 1997-08-21 | 1999-11-02 | Canon Kabushiki Kaisha | Toner and image forming method |
US5985502A (en) * | 1996-12-20 | 1999-11-16 | Canon Kabushiki Kaisha | Toner for developing an electrostatic image and process for producing a toner |
US5986017A (en) * | 1994-09-19 | 1999-11-16 | Fujitsu Limited | Toner binder for flash fixing, toner, electrostatic photographic printing method and apparatus therefor |
US5998080A (en) * | 1997-08-29 | 1999-12-07 | Canon Kabushiki Kaisha | Electrostatic image-developing toner and image-forming method |
US6001525A (en) * | 1996-11-19 | 1999-12-14 | Canon Kabushiki Kaisha | Electrophotographic developer carrier, two-component type developer and image forming method |
US6001527A (en) * | 1996-12-26 | 1999-12-14 | Fuji Xerox Co., Ltd. | Electrostatic charge image developer, image formation method and image forming device |
US6002903A (en) * | 1995-05-15 | 1999-12-14 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, apparatus unit and image forming method |
US6002895A (en) * | 1994-05-13 | 1999-12-14 | Canon Kabushiki Kaisha | Process cartridge |
US6001524A (en) * | 1998-03-19 | 1999-12-14 | Hna Holdings, Inc. | Toner particles for electrophotographic imaging applications |
US6010811A (en) * | 1994-10-05 | 2000-01-04 | Canon Kabushiki Kaisha | Two-component type developer, developing method and image forming method |
US6013406A (en) * | 1997-03-11 | 2000-01-11 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, and image-forming method |
US6016414A (en) * | 1994-12-07 | 2000-01-18 | Canon Kabushiki Kaisha | Electrophotographic photosensitive member, electrophotographic apparatus and process cartridge |
US6017669A (en) * | 1995-09-20 | 2000-01-25 | Canon Kabushiki Kaisha | Toner for developing an electrostatic image |
US6020102A (en) * | 1997-07-04 | 2000-02-01 | Canon Kabushiki Kaisha | Positive-chargeable toner, image forming method and apparatus unit |
US6040103A (en) * | 1996-09-02 | 2000-03-21 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and image forming method |
US6054244A (en) * | 1997-12-26 | 2000-04-25 | Canon Kabushiki Kaisha | Process for producing toner |
US6090515A (en) * | 1994-05-13 | 2000-07-18 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, image forming method and process cartridge |
US6106990A (en) * | 1998-07-31 | 2000-08-22 | Canon Kabushiki Kaisha | Process for producing toner particles |
US6120655A (en) * | 1997-01-20 | 2000-09-19 | Fuji Photo Film Co., Ltd. | Process for producing printing plate for platemaking by ink-jet system |
US6124070A (en) * | 1998-09-25 | 2000-09-26 | Canon Kabushiki Kaisha | Toner and process for producing toner |
US6124067A (en) * | 1998-07-22 | 2000-09-26 | Canon Kabushiki Kaisha | Magnetic carrier, two-component developer and image forming method |
US6146801A (en) * | 1998-09-30 | 2000-11-14 | Canon Kabushiki Kaisha | Resin-coated carrier, two component type developer, and developing method |
US6156470A (en) * | 1998-07-31 | 2000-12-05 | Canon Kabushiki Kaisha | Toner having negative triboelectric chargeability and image forming method |
US6156471A (en) * | 1999-01-21 | 2000-12-05 | Canon Kabushiki Kaisha | Toner and image forming method |
US6203959B1 (en) | 1999-03-09 | 2001-03-20 | Canon Kabushiki Kaisha | Toner |
US6219522B1 (en) | 1998-09-17 | 2001-04-17 | Canon Kabushiki Kaisha | Fuser and image forming apparatus |
US6225017B1 (en) | 1997-10-31 | 2001-05-01 | Canon Kabushiki Kaisha | Electrophotographic photosensitive member, and process cartridge and electrophotographic apparatus having the electrophotographic photosensitive member |
US6232027B1 (en) | 1998-05-26 | 2001-05-15 | Canon Kabushiki Kaisha | Toner having negative triboelectric chargeability and image forming method |
US6235441B1 (en) | 1998-12-17 | 2001-05-22 | Canon Kabushiki Kaisha | Positively chargeable toner, image forming method and image forming apparatus |
US6288166B1 (en) | 1993-09-03 | 2001-09-11 | Kao Corporation | Binder resin for toner and positively chargeable toner containing the same |
US6287742B1 (en) | 2000-05-16 | 2001-09-11 | Matsci Solutions, Inc. | Toner compositions and method of producing toner for developing latent electrostatic images |
US6294303B1 (en) | 2000-01-24 | 2001-09-25 | Nexpress Solutions Llc | Monocomponent developer containing positively chargeable fine power |
US6300024B1 (en) | 1999-06-30 | 2001-10-09 | Canon Kabushiki Kaisha | Toner, two-component type developer, heat fixing method, image forming method and apparatus unit |
US6309788B1 (en) | 1998-11-06 | 2001-10-30 | Canon Kabushiki Kaisha | Process for producing toner |
US6312862B1 (en) | 1998-11-06 | 2001-11-06 | Canon Kabushiki Kaisha | Two-component type developer and image forming method |
US6326114B1 (en) | 1999-04-14 | 2001-12-04 | Canon Kabushiki Kaisha | Toner, and process for producing a toner |
US6342273B1 (en) | 1994-11-16 | 2002-01-29 | Dsm N.V. | Process for coating a substrate with a powder paint composition |
US6372400B1 (en) | 1999-06-30 | 2002-04-16 | Canon Kabushiki Kaisha | Carrier for use in electrophotography, two-component type developer and image forming method |
US6376148B1 (en) | 2001-01-17 | 2002-04-23 | Nanotek Instruments, Inc. | Layer manufacturing using electrostatic imaging and lamination |
US6379482B1 (en) * | 1999-10-22 | 2002-04-30 | Fujitsu Limited | Manufacturing device and method of the exposure device |
US6381434B1 (en) | 1996-11-14 | 2002-04-30 | Canon Kabushiki Kaisha | Developing apparatus with electric field force directing a toner cloud for coating a developer carrying member |
US6387583B1 (en) | 1999-12-09 | 2002-05-14 | Matsci Solutions, Inc. | Method of producing toner for developing latent electrostatic images by way of dispersion dyeing |
US6389970B1 (en) * | 1999-05-31 | 2002-05-21 | Fuji Photo Film Co., Ltd. | Direct drawing type lithographic printing plate precursor and method for producing lithographic printing plate using the same |
US6397031B1 (en) | 1999-08-30 | 2002-05-28 | Canon Kabushiki Kaisha | Development apparatus with first and second developer carrying member and a plurality of magnetic field generating means for regulating developer layer thickness |
EP1209531A1 (en) | 2000-11-28 | 2002-05-29 | Xerox Corporation | Toner compositions comprising vinyl resin and poly (3,4-ethylenedioxythiophene) |
US6403274B2 (en) | 2000-04-21 | 2002-06-11 | Fuji Xerox Co., Ltd. | Electrophotographic toner, process for preparing the same, and two-component developer |
US6410195B1 (en) | 1999-08-12 | 2002-06-25 | Canon Kabushiki Kaisha | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus |
US6416917B1 (en) * | 1919-04-07 | 2002-07-09 | Sanyo Chemical Industries Ltd. | Dry toners having specified condensation binder resins |
US6424814B2 (en) | 2000-02-25 | 2002-07-23 | Canon Kabushiki Kaisha | Image forming apparatus using shaped toner particles and transfer roller pressure for fine image quality |
US6426169B1 (en) | 1999-10-29 | 2002-07-30 | Canon Kabushiki Kaisha | Toner containing azo iron compound |
US6436599B1 (en) | 1997-07-28 | 2002-08-20 | Fuji Xerox Co., Ltd. | Toner, method of producing toner, and image forming method using toner |
US6447970B1 (en) | 1999-06-07 | 2002-09-10 | Canon Kabushiki Kaisha | Toner containing aluminum benzilic acid compound and image forming method |
US6447968B1 (en) | 1996-12-26 | 2002-09-10 | Canon Kabushiki Kaisha | Magnetic toner, process for producing magnetic toner, and image forming method |
US20020136978A1 (en) * | 2001-03-26 | 2002-09-26 | Tai-Nang Huang | Transfer of arrayed chemical compositions |
US20020136772A1 (en) * | 2001-03-26 | 2002-09-26 | Tai-Nang Huang | Polymer synthesis |
US6458499B1 (en) | 2000-06-02 | 2002-10-01 | Canon Kabushiki Kaisha | Toner having hydrocarbon wax with specific ester value and hydroxyl value |
US6461783B1 (en) | 2001-05-18 | 2002-10-08 | Dpi Solutions, Inc. | Micro-serrated color toner particles and method of making same |
US6475686B2 (en) | 2000-07-28 | 2002-11-05 | Canon Kabushiki Kaisha | Fixing method |
US6485875B1 (en) | 1999-10-26 | 2002-11-26 | Canon Kabushiki Kaisha | Toner and resin composition for the toner |
US6493522B2 (en) | 2000-06-09 | 2002-12-10 | Canon Kabushiki Kaisha | Developing device and image forming apparatus |
US6500593B2 (en) | 2000-11-29 | 2002-12-31 | Canon Kabushiki Kaisha | Toner, and toner production process |
US6531255B2 (en) | 2001-05-18 | 2003-03-11 | Dpi Solutions, Inc. | Micro-serrated particles for use in color toner and method of making same |
USRE38026E1 (en) | 1993-11-29 | 2003-03-11 | Canon Kabushiki Kaisha | Developing device having regulating rotary member for regulating toner amount |
US6537716B1 (en) | 1993-12-29 | 2003-03-25 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and heat fixing method |
US6537715B2 (en) | 2000-07-28 | 2003-03-25 | Canon Kabushiki Kaisha | Toner, image-forming method and process cartridge |
US6544705B2 (en) | 2001-05-18 | 2003-04-08 | Dpi Solutions, Inc. | Micro-serrated, dyed color toner particles and method of making same |
US6544707B2 (en) | 2000-07-07 | 2003-04-08 | Fujitsu Limited | Two component developing agent and an image forming apparatus by use of the same |
US6544706B1 (en) * | 1998-02-06 | 2003-04-08 | Nippon Zeon Co., Ltd. | Polymerized toner and production process thereof |
US6555281B1 (en) | 1999-08-02 | 2003-04-29 | Canon Kabushiki Kaisha | Toner, process for producing a toner, image forming method and image forming apparatus |
US6569589B2 (en) | 2000-07-28 | 2003-05-27 | Canon Kabushiki Kaisha | Toner, toner production process and image forming method |
US6586151B1 (en) | 1999-10-06 | 2003-07-01 | Canon Kabushiki Kaisha | Toner, process for producing toner image forming method and apparatus unit |
US6589701B2 (en) | 2000-07-28 | 2003-07-08 | Canon Kabushiki Kaisha | Dry toner, image forming method and process cartridge |
US20030129517A1 (en) * | 2001-09-06 | 2003-07-10 | Yojiro Hotta | Toner and heat-fixing method |
US6610454B2 (en) | 1997-09-05 | 2003-08-26 | Canon Kabushiki Kaisha | Toner and image forming method |
US20030162116A1 (en) * | 2002-01-15 | 2003-08-28 | Yasushi Katsuta | Toner and image-forming method |
US20030165764A1 (en) * | 2002-02-22 | 2003-09-04 | Yoshihito Suwa | Toner for electrophotography |
US20030165760A1 (en) * | 2001-12-28 | 2003-09-04 | Hiroto Higuchi | Toner for developing electrostatic latent image, toner cartridge, developer, developer cartridge, image forming method, and image forming apparatus |
US6623901B1 (en) | 1993-12-29 | 2003-09-23 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US20030180641A1 (en) * | 2002-02-14 | 2003-09-25 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic latent image, process for producing the same, developer for developing electrostatic latent image, and process for producing image |
US6627374B2 (en) | 2000-05-31 | 2003-09-30 | Canon Kabushiki Kaisha | Process and system for producing toner particles |
US20030186150A1 (en) * | 2002-03-07 | 2003-10-02 | Konica Corporation | Toner for developing static latent image, method for producing toner for developing static latent image |
US6632577B2 (en) | 1992-10-15 | 2003-10-14 | Canon Kabushiki Kaisha | Image forming method |
US6636717B2 (en) | 2000-10-17 | 2003-10-21 | Canon Kabushiki Kaisha | Developing device including first and second developer carrying devices with insufficiently-charged developer control feature |
US6635398B1 (en) | 1999-10-26 | 2003-10-21 | Canon Kabushiki Kaisha | Dry toner, dry toner production process, and image forming method |
US6638674B2 (en) * | 2000-07-28 | 2003-10-28 | Canon Kabushiki Kaisha | Magnetic toner |
US20030203301A1 (en) * | 2002-04-30 | 2003-10-30 | Zeon Corporation | Toner for developing an electrostatic image |
US20030203304A1 (en) * | 2002-03-29 | 2003-10-30 | Fujitsu Limited | Image forming method |
US20030215732A1 (en) * | 2002-05-13 | 2003-11-20 | Tsuyoshi Uchida | Toner and image forming method |
US6653037B2 (en) | 2000-11-20 | 2003-11-25 | Ricoh Company, Ltd. | Toner for developing latent electrostatic images, and image forming method and device |
US20030232269A1 (en) * | 2002-04-24 | 2003-12-18 | Takeshi Tsujino | Process for producing toner particles |
US20030232266A1 (en) * | 2002-03-12 | 2003-12-18 | Hideki Sugiura | Toner for developing a latent electrostatic image, developer using the same, full-color toner kit using the same, image-forming apparatus using the same, image-forming process cartridge using the same and image-forming process using the same |
US20030231896A1 (en) * | 2002-04-24 | 2003-12-18 | Nobuo Kikuchi | Image forming apparatus and charging device |
US6667140B2 (en) | 2000-09-01 | 2003-12-23 | Canon Kabushiki Kaisha | Toner and image forming method |
US6671479B2 (en) | 2002-05-28 | 2003-12-30 | Xerox Corporation | Selective depopulation and/or repopulation of a full color image forming device |
US6670087B2 (en) | 2000-11-07 | 2003-12-30 | Canon Kabushiki Kaisha | Toner, image-forming apparatus, process cartridge and image forming method |
US6696212B2 (en) | 2001-03-27 | 2004-02-24 | Heidelberger Druckmaschinen Ag | Single component toner for improved magnetic image character recognition |
US6696211B2 (en) * | 2000-02-21 | 2004-02-24 | Canon Kabushiki Kaisha | Developer, image-forming method, and process cartridge |
US6703175B2 (en) | 2001-09-27 | 2004-03-09 | Fuji Xerox Co., Ltd. | Color toner containing less conductive particles that have appropriate electrical resistance and can produce clear color images |
US20040058266A1 (en) * | 2002-09-19 | 2004-03-25 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic images, process for preparing toner for developing electrostatic images, developer for developing electrostatic images and images forming method |
US6713221B2 (en) | 2001-01-12 | 2004-03-30 | Nof Corporation | Ester wax and toner using the wax |
US20040067189A1 (en) * | 2002-07-15 | 2004-04-08 | Hideki Sugiura | External additive for toner for electrophotography, toner for electrophotography, double-component developer for electrophotography, image-forming process using the toner, and image-forming apparatus using the toner |
US20040076898A1 (en) * | 1999-12-31 | 2004-04-22 | Cheil Industries Inc. | Electrophotographic photoreceptors |
US20040087708A1 (en) * | 2002-11-06 | 2004-05-06 | Sharp Kabushiki Kaisha | Master batch and toner for use in electrophotography |
US20040126688A1 (en) * | 2002-08-26 | 2004-07-01 | Fuji Electric Imaging Device Co., Ltd. | Multi-layered organic electrophotographic photoconductor |
US20040136015A1 (en) * | 2003-01-15 | 2004-07-15 | Xerox Corporation | Iterative printer control and color balancing system and method using a high quantization resolution halftone array to achieve improved image quality with reduced processing overhead |
US6765077B2 (en) | 2002-03-11 | 2004-07-20 | Canon Kabushiki Kaisha | Negative-chargeability control resin |
US6780368B2 (en) | 2001-04-10 | 2004-08-24 | Nanotek Instruments, Inc. | Layer manufacturing of a multi-material or multi-color 3-D object using electrostatic imaging and lamination |
US20040185367A1 (en) * | 2003-03-10 | 2004-09-23 | Fuji Xerox Co., Ltd. | Image forming method |
US20040191662A1 (en) * | 2003-03-24 | 2004-09-30 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic images containing specified binder resin, process for preparing the same,developer for developing electrostatic images, and image forming method |
US6808855B2 (en) | 2001-05-24 | 2004-10-26 | Canon Kabushiki Kaisha | Process for producing toner |
US20040224247A1 (en) * | 2000-07-17 | 2004-11-11 | Fumihiro Sasaki | Electrographic image formation method |
US20040239978A1 (en) * | 2003-05-29 | 2004-12-02 | Hewlett-Packard Co. | Method and apparatus for tracking a plurality of image devices in a network |
US20040259012A1 (en) * | 2003-03-27 | 2004-12-23 | Hiroyuki Fujikawa | Toner |
US20040259018A1 (en) * | 2002-06-03 | 2004-12-23 | Canon Kabushiki Kaisha | Process for producing toner particles, and toner |
US20050003291A1 (en) * | 2003-03-19 | 2005-01-06 | Takeshi Takada | Toner for developing electrostatic image, method for manufacturing the toner, developer including the toner, container containing the toner, and color image forming method using the toner |
US20050000822A1 (en) * | 2003-06-16 | 2005-01-06 | Udo Drager | Method for preparing a carrier for a photoconductor for the formation of an electrophotographic recording element and a recording element formed accordingly |
US20050008963A1 (en) * | 2003-07-11 | 2005-01-13 | Fuji Xerox Co., Ltd. | Toner for electrophotography, image-forming method, image-forming apparatus and toner cartridge |
US20050026066A1 (en) * | 2003-03-19 | 2005-02-03 | Chiaki Tanaka | Toner for image formation, method of producing the toner, toner container, toner cartridge, process cartridge, and image forming apparatus |
US20050026061A1 (en) * | 2003-07-30 | 2005-02-03 | Yushi Mikuriya | Toner |
US6852457B2 (en) | 2002-03-29 | 2005-02-08 | Fuji Xerox Co., Ltd. | Image fixing method |
US6873816B2 (en) | 2001-08-20 | 2005-03-29 | Canon Kabushiki Kaisha | Developing assembly, process cartridge and image-forming method |
US20050089788A1 (en) * | 2002-09-20 | 2005-04-28 | Fuji Xerox Co., Ltd. | Image forming apparatus |
US20050087289A1 (en) * | 2003-09-04 | 2005-04-28 | Seiko Epson Corporation | Method for forming film, method for forming wiring pattern, method for manufacturing semiconductor device, electro-optical device, and electronic device |
US20050100813A1 (en) * | 2003-11-11 | 2005-05-12 | Hiroshi Yamazaki | Image forming method |
US20050122041A1 (en) * | 2003-10-22 | 2005-06-09 | Canon Kabushiki Kaisha | Organic electroluminescent device |
US20050142476A1 (en) * | 2003-05-14 | 2005-06-30 | Chul-Hwan Kim | Powder-coated toner particles |
US20050154178A1 (en) * | 2003-11-25 | 2005-07-14 | Xerox Corporation | Process for preparing branched polyarylene ethers |
US20050158644A1 (en) * | 2003-12-09 | 2005-07-21 | Maiko Kondo | Toner, developer, toner container and latent electrostatic image carrier, and process cartridge, image forming method, and image forming apparatus using the same |
US20050175918A1 (en) * | 2004-02-10 | 2005-08-11 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic image used in electrophotography and process for producing the same |
US20050181289A1 (en) * | 2004-02-12 | 2005-08-18 | Konica Minolta Business Technologies, Inc. | Image forming method |
US20050208416A1 (en) * | 2003-11-25 | 2005-09-22 | Xerox Corporation | Branched polyarylene ethers and processes for the preparation thereof |
US20050282078A1 (en) * | 2004-06-18 | 2005-12-22 | Sharp Kabushiki Kaisha | Two-component developer and two-component developing apparatus using the same |
US6982139B2 (en) | 2002-05-28 | 2006-01-03 | Fuji Xerox Co., Ltd | Electrophotographic color toner, and electrophotographic color developer, toner cartridge, image forming device and image forming method using the same |
US6984479B2 (en) | 2001-04-27 | 2006-01-10 | Fuji Electric Imaging Device Co., Ltd. | Electrophotographic photoconductor and manufacturing method therefore |
US20060063082A1 (en) * | 2004-09-22 | 2006-03-23 | Canon Kabushiki Kaisha | Toner |
US20060063089A1 (en) * | 2004-09-17 | 2006-03-23 | Chiaki Tanaka | Toner and developer, toner container, process cartridge, image-forming apparatus, and image-forming method using the same |
US20060099529A1 (en) * | 2004-09-17 | 2006-05-11 | Chiaki Tanaka | Toner and method for producing the same, and image-forming method using the same |
US7045265B2 (en) | 2002-10-11 | 2006-05-16 | Fuji Xerox Co., Ltd. | Electrophotographic color toner |
US20060105260A1 (en) * | 2003-01-13 | 2006-05-18 | Won-Sup Lee | Non-magnetic monocomponent positive toner composition having superior transfer efficiency |
EP1677159A2 (en) | 2004-12-28 | 2006-07-05 | Ricoh Company, Ltd. | Toner, method for its production and image forming method |
US20060160006A1 (en) * | 2004-11-19 | 2006-07-20 | Canon Kabushiki Kaisha | Positively chargeable developer |
US20060160009A1 (en) * | 2005-01-18 | 2006-07-20 | Itipon Padunchwit | Color toner and developer compositions and processes for making and using such compositions |
US20060210900A1 (en) * | 2005-03-15 | 2006-09-21 | Kabushiki Kaisha Toshiba | Toner |
US20060257775A1 (en) * | 2005-05-13 | 2006-11-16 | Xerox Corporation | Toner compositions with amino-containing polymers as surface additives |
US20060274375A1 (en) * | 2005-06-02 | 2006-12-07 | Xerox Corporation | Image/document analysis tool and method for multi-station image forming device |
US20070009167A1 (en) * | 2005-07-05 | 2007-01-11 | Dance Christopher R | Contrast enhancement of images |
US20070014584A1 (en) * | 2005-07-13 | 2007-01-18 | Xerox Corporation | Calibration apparatus and method for charging unit of image forming device |
US20070026336A1 (en) * | 2005-08-01 | 2007-02-01 | Canon Kabushiki Kaisha | Toner |
US20070069129A1 (en) * | 2005-09-27 | 2007-03-29 | Parks Bruce J | Dicorotron wire assembly removal-insertion tool |
US20070087278A1 (en) * | 2005-10-14 | 2007-04-19 | Mikio Yamazaki | Electrophotographic photoconductor |
US20070092821A1 (en) * | 2005-10-25 | 2007-04-26 | Fuji Xerox Co., Ltd. | Toner for electrostatic image development, electrostatic image developer and image forming method using the same |
US20070105033A1 (en) * | 2005-11-07 | 2007-05-10 | Canon Kabushiki Kaisha | Toner |
US20070154827A1 (en) * | 2005-12-27 | 2007-07-05 | Fuji Electric Device Technology Co., Ltd | Electrophotographic photoconductor |
US20070178228A1 (en) * | 2006-01-27 | 2007-08-02 | Shiu Hei M | Method for fabricating a PCB |
US20070186804A1 (en) * | 2004-03-03 | 2007-08-16 | Heino Heckmann | Violet colorant for colour filters, inks for ink-jet electrophotographic toners and developers and e-inks |
WO2007103271A1 (en) | 2006-03-03 | 2007-09-13 | Dow Global Technologies Inc. | Aqueous dispersions for use as toners |
US20070292161A1 (en) * | 2006-06-20 | 2007-12-20 | Nobuo Kikuchi | Charging device, process cartridge, and image forming apparatus |
US20080003512A1 (en) * | 2006-07-03 | 2008-01-03 | Konica Minolta Business Technologies, Inc. | Image forming method |
US20080019719A1 (en) * | 2006-07-18 | 2008-01-24 | Xerox Corporation | Imaging method for universal printers using an image-on-image process |
US20080035002A1 (en) * | 2006-08-08 | 2008-02-14 | Xerox Corporation | Oil dispenser for simplex and duplex print engine |
US20080063964A1 (en) * | 2006-09-13 | 2008-03-13 | Masami Tomita | Method for producing toner and resulting toner |
US20080069587A1 (en) * | 2006-09-18 | 2008-03-20 | Xerox Corporation | Locking feature for use in cartridge insertion guide applications |
US20080153017A1 (en) * | 2006-12-26 | 2008-06-26 | Samsung Electronics Co., Ltd | Electrophotographic image forming apparatus having transparent toner and white toner |
EP1959264A1 (en) | 2007-02-16 | 2008-08-20 | Xerox Corporation | Electric field probe |
US20080268364A1 (en) * | 2007-04-24 | 2008-10-30 | Xerox Corporation | Methods for making customized black toners |
EP2100896A1 (en) | 2008-03-14 | 2009-09-16 | Konica Minolta Business Technologies, INC. | Copper complex compound and electrophotographic toner containing the same |
EP2101222A1 (en) | 2008-03-14 | 2009-09-16 | Konica Minolta Business Technologies, INC. | Electrophotographic toner |
US20090311618A1 (en) * | 2008-06-16 | 2009-12-17 | Chang-Soon Lee | Surface-modified non-magnetic mono-component color toner with improvements in background contamination and transfer efficiency and method of preparing the same |
US20100028795A1 (en) * | 2008-05-28 | 2010-02-04 | Canon Kabushiki Kaisha | Toner |
US20100136476A1 (en) * | 2008-12-01 | 2010-06-03 | Konica Minolta Business Technologies, Inc. | Image forming method |
US20100143837A1 (en) * | 2006-03-03 | 2010-06-10 | John Klier | Aqueous dispersions for use as toners |
US20100151370A1 (en) * | 2008-12-11 | 2010-06-17 | Xerox Corporation | Imaging member |
US20100151368A1 (en) * | 2008-12-11 | 2010-06-17 | Xerox Corporation | Imaging member |
US20100151371A1 (en) * | 2008-12-11 | 2010-06-17 | Xerox Corporation | Imaging member |
US20100151369A1 (en) * | 2008-12-11 | 2010-06-17 | Xerox Corporation | Imaging member |
US20100159375A1 (en) * | 2008-12-18 | 2010-06-24 | Xerox Corporation | Toners containing polyhedral oligomeric silsesquioxanes |
US20100248119A1 (en) * | 2007-11-29 | 2010-09-30 | Dow Global Technologies Inc. | Compounds and methods of forming compounds useful as a toner |
WO2010151293A1 (en) | 2009-06-24 | 2010-12-29 | Eastman Kodak Company | Extruded image receiver elements |
DE112009000593T5 (en) | 2008-03-17 | 2011-02-10 | Park & Opc Co., Ltd. | Electrostatic image developing toner |
WO2011019180A2 (en) | 2009-08-11 | 2011-02-17 | 주식회사 파캔오피씨 | Electrostatic image-developing toner |
WO2011028230A1 (en) | 2009-08-27 | 2011-03-10 | Eastman Kodak Company | Image receiver elements |
EP2296043A1 (en) | 2009-09-14 | 2011-03-16 | Fuji Xerox Co., Ltd. | Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus |
US20110151372A1 (en) * | 2009-12-17 | 2011-06-23 | Masaki Watanabe | Toner, image forming method using the toner, and image forming apparatus using the toner |
US7985523B2 (en) | 2008-12-18 | 2011-07-26 | Xerox Corporation | Toners containing polyhedral oligomeric silsesquioxanes |
US20110183246A1 (en) * | 2008-07-18 | 2011-07-28 | Fuji Electric Systems Co., Ltd | Novel ethylene compound, charge transport material containing ethylene compound, electrophotographic photoreceptor containing ethylene compound, and process for producing electrophotographic photoreceptor |
US20110217651A1 (en) * | 2010-03-08 | 2011-09-08 | Konica Minolta Business Technologies, Inc. | Image formation method and image formation apparatus |
US8015724B2 (en) * | 2004-04-23 | 2011-09-13 | Panasonic Electric Works Co., Ltd. | Heating blower with electrostatic atomizing device |
WO2011123426A1 (en) | 2010-03-31 | 2011-10-06 | Eastman Kodak Company | Image receiver elements with overcoat |
EP2399752A2 (en) | 2010-06-25 | 2011-12-28 | Eastman Kodak Company | Thermal receiver elements and imaging assemblies |
DE102012205386A1 (en) | 2011-04-06 | 2012-10-11 | Xerox Corporation | Process for producing a toner |
US20120295189A1 (en) * | 2011-05-17 | 2012-11-22 | Hubei Dinglong Chemical Co., Ltd. | Bicomponent developing agent |
WO2013016149A1 (en) | 2011-07-22 | 2013-01-31 | Cabot Corporation | High resistivity coating compositions having unique percolation behavior, and electrostatic image developing systems and components thereof incorporating same |
US8488994B2 (en) | 2011-09-23 | 2013-07-16 | Stratasys, Inc. | Electrophotography-based additive manufacturing system with transfer-medium service loops |
US20130344427A1 (en) * | 2011-03-09 | 2013-12-26 | Takuya Kadota | Toner, image forming apparatus, and process cartridge |
US8718522B2 (en) | 2011-09-23 | 2014-05-06 | Stratasys, Inc. | Layer transfusion with part heating for additive manufacturing |
US8835086B2 (en) | 2009-12-02 | 2014-09-16 | Ricoh Company, Ltd. | Electrostatic image developing toner |
US8879957B2 (en) | 2011-09-23 | 2014-11-04 | Stratasys, Inc. | Electrophotography-based additive manufacturing system with reciprocating operation |
US20150016846A1 (en) * | 2012-02-07 | 2015-01-15 | Hewlett-Packard Indigo Bv | Liquid electrophotograpy |
US9023566B2 (en) | 2013-07-17 | 2015-05-05 | Stratasys, Inc. | ABS part material for electrophotography-based additive manufacturing |
US9023570B2 (en) | 2010-10-22 | 2015-05-05 | Ricoh Company, Ltd. | Toner, developer, and image forming apparatus |
US9029058B2 (en) | 2013-07-17 | 2015-05-12 | Stratasys, Inc. | Soluble support material for electrophotography-based additive manufacturing |
US9034550B2 (en) | 2010-11-22 | 2015-05-19 | Ricoh Company, Ltd. | Toner, developer, image forming apparatus, and image forming method |
US9081319B2 (en) | 2008-12-16 | 2015-07-14 | Fuji Electric Co., Ltd. | Electrophotographic photoconductor, manufacturing method thereof, and electrophotographic device |
US9144940B2 (en) | 2013-07-17 | 2015-09-29 | Stratasys, Inc. | Method for printing 3D parts and support structures with electrophotography-based additive manufacturing |
US20150370197A1 (en) * | 2014-06-20 | 2015-12-24 | Konica Minolta, Inc. | Wet development device and wet image forming apparatus |
US9643357B2 (en) | 2014-03-18 | 2017-05-09 | Stratasys, Inc. | Electrophotography-based additive manufacturing with powder density detection and utilization |
US9678456B1 (en) * | 2015-12-07 | 2017-06-13 | Fuji Xerox Co., Ltd. | Image forming unit and image forming apparatus |
US9688027B2 (en) | 2014-04-01 | 2017-06-27 | Stratasys, Inc. | Electrophotography-based additive manufacturing with overlay control |
US9690230B2 (en) | 2007-10-29 | 2017-06-27 | Toshiba Tec Kabushiki Kaisha | Toner cartridge with memory for image forming apparatus |
US9770869B2 (en) | 2014-03-18 | 2017-09-26 | Stratasys, Inc. | Additive manufacturing with virtual planarization control |
WO2017192444A1 (en) | 2016-05-03 | 2017-11-09 | Jp Laboratories | A time-temperature indicator based on increased thermal reactivity of a diacetylene upon melt recrystallization |
US9868255B2 (en) | 2014-03-18 | 2018-01-16 | Stratasys, Inc. | Electrophotography-based additive manufacturing with pre-sintering |
US9919479B2 (en) | 2014-04-01 | 2018-03-20 | Stratasys, Inc. | Registration and overlay error correction of electrophotographically formed elements in an additive manufacturing system |
US10011071B2 (en) | 2014-03-18 | 2018-07-03 | Evolve Additive Solutions, Inc. | Additive manufacturing using density feedback control |
US10144175B2 (en) | 2014-03-18 | 2018-12-04 | Evolve Additive Solutions, Inc. | Electrophotography-based additive manufacturing with solvent-assisted planarization |
US10324388B2 (en) * | 2016-03-18 | 2019-06-18 | Ricoh Company, Ltd. | Toner, toner stored unit, image forming apparatus, and image forming method |
US20210294229A1 (en) * | 2020-03-17 | 2021-09-23 | Ricoh Company, Ltd. | Image forming apparatus, toner, two-component developing agent, and image forming method |
US20210356877A1 (en) * | 2020-05-18 | 2021-11-18 | Ricoh Company, Ltd. | Toner and production method thereof, toner stored unit, image forming apparatus, and image forming method |
US11241824B2 (en) | 2011-09-23 | 2022-02-08 | Evolve Additive Solutions, Inc. | Layer transfusion for heat capacitor belt for additive manufacturing |
US12181822B2 (en) * | 2022-12-22 | 2024-12-31 | Fujifilm Business Innovation Corp. | Tubular fixing member, fixing device, and image forming apparatus |
-
1939
- 1939-04-04 US US265925A patent/US2297691A/en not_active Expired - Lifetime
-
1946
- 1946-02-13 FR FR922351D patent/FR922351A/en not_active Expired
-
1947
- 1947-07-30 GB GB20671/47A patent/GB672767A/en not_active Expired
Cited By (918)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2984163A (en) * | 1961-05-16 | giaimo | ||
US2732775A (en) * | 1956-01-31 | Continuous direct electrophotographic recorder | ||
US6416917B1 (en) * | 1919-04-07 | 2002-07-09 | Sanyo Chemical Industries Ltd. | Dry toners having specified condensation binder resins |
US2431923A (en) * | 1943-08-23 | 1947-12-02 | Rca Corp | Photographic record and method of forming same |
US2551582A (en) * | 1943-08-27 | 1951-05-08 | Chester F Carlson | Method of printing and developing solvent images |
US2690394A (en) * | 1943-08-27 | 1954-09-28 | Chester F Carlson | Electrophotography |
US2624652A (en) * | 1944-10-11 | 1953-01-06 | Chester F Carlson | Graphic recording |
US2618552A (en) * | 1947-07-18 | 1952-11-18 | Battelle Development Corp | Development of electrophotographic images |
US2549546A (en) * | 1947-10-24 | 1951-04-17 | Albert G Thomas | Photographic electrical copying device |
US2484782A (en) * | 1948-02-27 | 1949-10-11 | Haloid Co | Method of removing electroscopic powder from an electrophotographic plate |
US2599542A (en) * | 1948-03-23 | 1952-06-10 | Chester F Carlson | Electrophotographic plate |
US2638416A (en) * | 1948-05-01 | 1953-05-12 | Battelle Development Corp | Developer composition for developing an electrostatic latent image |
US2637651A (en) * | 1948-10-02 | 1953-05-05 | Battelle Development Corp | Method of producing images on rigid surfaces |
US2618551A (en) * | 1948-10-20 | 1952-11-18 | Haloid Co | Developer for electrostatic images |
US2576047A (en) * | 1948-10-21 | 1951-11-20 | Battelle Development Corp | Method and apparatus for printing electrically |
US2573881A (en) * | 1948-11-02 | 1951-11-06 | Battelle Development Corp | Method and apparatus for developing electrostatic images with electroscopic powder |
US2681473A (en) * | 1948-12-30 | 1954-06-22 | Chester F Carlson | Manufacture of plaques and the like |
US2598732A (en) * | 1949-03-09 | 1952-06-03 | Haloid Co | Electrophotography |
US2663636A (en) * | 1949-05-25 | 1953-12-22 | Haloid Co | Electrophotographic plate and method of producing same |
US2600580A (en) * | 1949-06-03 | 1952-06-17 | Haloid Co | Electrophotographic apparatus |
US2647464A (en) * | 1949-10-26 | 1953-08-04 | Battelle Development Corp | Electrography |
US2666144A (en) * | 1950-02-02 | 1954-01-12 | Battelle Development Corp | Electroradiography |
US2586484A (en) * | 1950-04-29 | 1952-02-19 | Haloid Co | Fusing device |
US2693416A (en) * | 1950-05-19 | 1954-11-02 | Western Electric Co | Method of electrostatic electrophotography |
US2659670A (en) * | 1950-06-06 | 1953-11-17 | Haloid Co | Method of developing electrostatic images |
US2752833A (en) * | 1950-07-15 | 1956-07-03 | Carlyle W Jacob | Apparatus for reproduction of pictures |
US2808328A (en) * | 1950-07-15 | 1957-10-01 | Carlyle W Jacob | Method and apparatus for xerographic reproduction |
US2682478A (en) * | 1950-09-11 | 1954-06-29 | Technicolor Motion Picture | Method of forming television screens |
US2727826A (en) * | 1950-09-30 | 1955-12-20 | Rca Corp | Image transfer material and method of making it |
US2764500A (en) * | 1951-10-04 | 1956-09-25 | Huebner Company | Method and apparatus for reproducing images |
US2750922A (en) * | 1951-12-13 | 1956-06-19 | Haloid Co | Apparatus for developing electrophotographic plates |
US2845348A (en) * | 1952-01-04 | 1958-07-29 | Kallman Hartmut | Electro-photographic means and method |
US2676100A (en) * | 1952-02-02 | 1954-04-20 | Huebner Company | Method and apparatus for reproducing images |
US2829050A (en) * | 1952-02-23 | 1958-04-01 | Huebner Company | Method and apparatus for reproducing images |
US2745327A (en) * | 1952-05-12 | 1956-05-15 | Haloid Co | Electrophotographic process |
US2712607A (en) * | 1952-07-01 | 1955-07-05 | Orlando Carl | Device for intensifying photoelectrostatic image |
US2776907A (en) * | 1952-07-18 | 1957-01-08 | Battelle Development Corp | Method of fixing electrostatic powder image |
US2716048A (en) * | 1952-08-14 | 1955-08-23 | Charles J Young | Electrostatic facsimile receiver |
US2804396A (en) * | 1952-08-19 | 1957-08-27 | Battelle Development Corp | Process of preparing an X-ray sensitive member |
US3106479A (en) * | 1952-12-03 | 1963-10-08 | Rca Corp | Electrostatic printing method and apparatus |
US2901348A (en) * | 1953-03-17 | 1959-08-25 | Haloid Xerox Inc | Radiation sensitive photoconductive member |
US2816493A (en) * | 1953-03-19 | 1957-12-17 | Haloid Co | Electrophotographic microfilm enlarger |
US2774921A (en) * | 1953-04-23 | 1956-12-18 | Haloid Co | Apparatus for electrostatically charging insulating image surfaces for electrophotography |
US2943950A (en) * | 1953-05-07 | 1960-07-05 | Haloid Xerox Inc | Electrostatic developing apparatus and method |
US2803541A (en) * | 1953-05-29 | 1957-08-20 | Haloid Co | Xerographic plate |
US2914996A (en) * | 1953-06-03 | 1959-12-01 | Sprague Electric Co | Electrostatic unit for producing printed circuits |
US2833648A (en) * | 1953-07-16 | 1958-05-06 | Haloid Co | Transfer of electrostatic charge pattern |
US2825814A (en) * | 1953-07-16 | 1958-03-04 | Haloid Co | Xerographic image formation |
US2833930A (en) * | 1953-07-16 | 1958-05-06 | Haloid Co | Electrostatic charging method and apparatus |
US2788288A (en) * | 1953-07-29 | 1957-04-09 | Haloid Co | Process and composition for developing an electrostatic image |
US3084061A (en) * | 1953-09-23 | 1963-04-02 | Xerox Corp | Method for formation of electro-static image |
US3011436A (en) * | 1953-09-30 | 1961-12-05 | Gen Electric | Methods of making printing plates |
US2862815A (en) * | 1953-10-01 | 1958-12-02 | Rca Corp | Electrophotographic member |
US3052539A (en) * | 1953-10-01 | 1962-09-04 | Rca Corp | Electrostatic printing |
US2853383A (en) * | 1953-10-02 | 1958-09-23 | Paul H Keck | Method and apparatus for amplifying photoelectric currents |
US2876737A (en) * | 1953-10-12 | 1959-03-10 | Battelle Development Corp | Apparatus for developing electrostatic images on sheet material |
US2838997A (en) * | 1953-10-30 | 1958-06-17 | Rca Corp | Electrostatic image copying method |
US2839400A (en) * | 1953-10-30 | 1958-06-17 | Rca Corp | Electrostatic printing |
US2895847A (en) * | 1953-12-21 | 1959-07-21 | Battelle Development Corp | Electric image development |
US2758525A (en) * | 1953-12-30 | 1956-08-14 | Rca Corp | Electrostatic photographic printing |
US2758524A (en) * | 1953-12-30 | 1956-08-14 | Rca Corp | Electrostatic photographic printing |
US2803177A (en) * | 1953-12-31 | 1957-08-20 | Ibm | Apparatus and method for xerographic printing |
US3251706A (en) * | 1954-01-04 | 1966-05-17 | Xerox Corp | Xerographic development method and apparatus |
US3143066A (en) * | 1954-01-05 | 1964-08-04 | Xerox Corp | Production of duplicating masters |
US2922716A (en) * | 1954-02-11 | 1960-01-26 | Nathan Frederick | Process of and apparatus for preparing photo-engraved printing plates |
US2995085A (en) * | 1954-02-23 | 1961-08-08 | Haloid Xerox Inc | Transfer and fixing method |
US2862816A (en) * | 1954-03-26 | 1958-12-02 | Rca Corp | Method of and means for reducing triboelectric forces in electrophotography |
US3052540A (en) * | 1954-06-02 | 1962-09-04 | Rca Corp | Dye sensitization of electrophotographic materials |
US2861543A (en) * | 1954-06-14 | 1958-11-25 | Haloid Xerox Inc | Apparatus for development of electrostatic image |
US2904431A (en) * | 1954-08-26 | 1959-09-15 | Rca Corp | Electrographotographic charging means |
US2857272A (en) * | 1954-09-28 | 1958-10-21 | Rca Corp | Electrostatic printing |
US2857271A (en) * | 1954-09-28 | 1958-10-21 | Rca Corp | Electrostatic printing process for producing photographic transparencies |
US2873721A (en) * | 1954-11-03 | 1959-02-17 | Haloid Xerox Inc | Micromanifold for powder cloud development |
US3052564A (en) * | 1954-12-20 | 1962-09-04 | Ibm | Printing with magnetic ink |
US2919247A (en) * | 1954-12-23 | 1959-12-29 | Haloid Xerox Inc | Tripartite developer for electrostatic images |
US2919191A (en) * | 1954-12-27 | 1959-12-29 | Haloid Xerox Inc | Xerographic transfer method |
US3109367A (en) * | 1955-01-03 | 1963-11-05 | Xerox Corp | Method for pattern reproduction |
US2892794A (en) * | 1955-01-03 | 1959-06-30 | Haloid Xerox Inc | Electrostatic developer and toner |
US2868642A (en) * | 1955-01-03 | 1959-01-13 | Haloid Xerox Inc | Electrophotographic method |
US2910351A (en) * | 1955-01-03 | 1959-10-27 | Gen Electric | Method of making printed circuit |
US2817277A (en) * | 1955-01-07 | 1957-12-24 | Haloid Co | Electrophotographic camera |
US2899331A (en) * | 1955-01-25 | 1959-08-11 | Process of developing electrostatic | |
US3043684A (en) * | 1955-01-26 | 1962-07-10 | Gen Dynamics Corp | Electrostatic printing |
US2817598A (en) * | 1955-02-01 | 1957-12-24 | Haloid Co | Continuous tone reversal development process |
US2992128A (en) * | 1955-02-04 | 1961-07-11 | Little Inc A | Record members to provide a visible trace of movement of a mechanical stylus |
US3117884A (en) * | 1955-03-23 | 1964-01-14 | Rca Corp | Electrostatic printing process and apparatus |
US2956487A (en) * | 1955-03-23 | 1960-10-18 | Rca Corp | Electrostatic printing |
US3279366A (en) * | 1955-03-31 | 1966-10-18 | Dick Co Ab | Aluminum photolithographic plate and method of imaging same |
US2855324A (en) * | 1955-04-07 | 1958-10-07 | van dorn | |
US2901374A (en) * | 1955-05-04 | 1959-08-25 | Battelle Development Corp | Development of electrostatic image and apparatus therefor |
US2990473A (en) * | 1955-05-04 | 1961-06-27 | Research Corp | Method for recording, detecting and measuring radiation and for recording and recalling data |
US2885955A (en) * | 1955-05-11 | 1959-05-12 | Haloid Xerox Inc | Xerographic machine |
US2874064A (en) * | 1955-05-16 | 1959-02-17 | Haloid Xerox Inc | Xerographic cleaner |
US2855297A (en) * | 1955-05-16 | 1958-10-07 | Owens Illinois Glass Co | Electrophotographic method of applying art work to rubber for engraving |
US2914403A (en) * | 1955-05-17 | 1959-11-24 | Rca Corp | Electrostatic printing |
US2890968A (en) * | 1955-06-02 | 1959-06-16 | Rca Corp | Electrostatic printing process and developer composition therefor |
US2886434A (en) * | 1955-06-06 | 1959-05-12 | Horizons Inc | Protected photoconductive element and method of making same |
US2860048A (en) * | 1955-06-13 | 1958-11-11 | Haloid Xerox Inc | Xerographic plate |
US2894840A (en) * | 1955-06-14 | 1959-07-14 | Haloid Xerox Inc | Method for fixing xerographic images |
US2863768A (en) * | 1955-07-05 | 1958-12-09 | Haloid Xerox Inc | Xerographic plate |
US2949848A (en) * | 1955-07-27 | 1960-08-23 | Haloid Xerox Inc | Stencil making |
US2955938A (en) * | 1955-08-01 | 1960-10-11 | Haloid Xerox Inc | Xerography |
US2965481A (en) * | 1955-08-01 | 1960-12-20 | Haloid Xerox Inc | Electrostatic charging and image formation |
US2885556A (en) * | 1955-08-01 | 1959-05-05 | Haloid Xerox Inc | Simultaneous charging device and method |
US2970906A (en) * | 1955-08-05 | 1961-02-07 | Haloid Xerox Inc | Xerographic plate and a process of copy-making |
US2886464A (en) * | 1955-08-09 | 1959-05-12 | Haloid Xerox Inc | Contact transfer for xerography |
US2917385A (en) * | 1955-08-26 | 1959-12-15 | Haloid Xerox Inc | Reflex xerography |
US3010842A (en) * | 1955-08-29 | 1961-11-28 | Xerox Corp | Development of electrostatic images |
DE974162C (en) * | 1955-08-30 | 1960-09-29 | Rca Corp | Process for the production of lithographic printing plates by the electrostatic process |
US3083684A (en) * | 1955-09-29 | 1963-04-02 | Xerox Corp | Apparatus for pattern reproduction |
US3138458A (en) * | 1955-09-30 | 1964-06-23 | Minnesota Mining & Mfg | Electrophotography |
US3198632A (en) * | 1955-09-30 | 1965-08-03 | Minnesota Mining & Mfg | Electrophotography |
US2846333A (en) * | 1955-11-01 | 1958-08-05 | Haloid Xerox Inc | Method of developing electrostatic images |
US2986466A (en) * | 1955-12-06 | 1961-05-30 | Edward K Kaprelian | Color electrophotography |
US3051568A (en) * | 1955-12-06 | 1962-08-28 | Edward K Kaprelian | Offset electrophotography |
US2947625A (en) * | 1955-12-21 | 1960-08-02 | Ibm | Method of manufacturing printed circuits |
US3013878A (en) * | 1955-12-29 | 1961-12-19 | Xerox Corp | Method and apparatus for transferring and fixing xerographic images |
US2907674A (en) * | 1955-12-29 | 1959-10-06 | Commw Of Australia | Process for developing electrostatic image with liquid developer |
US2881073A (en) * | 1955-12-29 | 1959-04-07 | Ibm | Method of forming permanent data on magnetic recording media |
US2955035A (en) * | 1956-01-03 | 1960-10-04 | Haloid Xerox Inc | Raised xerographic images |
US2909118A (en) * | 1956-01-05 | 1959-10-20 | Warren S D Co | Magnetically imageable planographic plate |
US2963365A (en) * | 1956-02-16 | 1960-12-06 | Rca Corp | Electrostatic printing |
US2900515A (en) * | 1956-03-16 | 1959-08-18 | Edward L Criscuolo | Radiography by gas ionization |
US2975052A (en) * | 1956-03-19 | 1961-03-14 | Gen Dynamics Corp | Electrostatic printing |
US3010883A (en) * | 1956-03-30 | 1961-11-28 | Minnesota Mining & Mfg | Electrolytic electrophotography |
US3005707A (en) * | 1956-04-16 | 1961-10-24 | Leonard E Ravich | Devices exhibiting persistent internal polarization and methods of utilizing the same |
US2826168A (en) * | 1956-04-16 | 1958-03-11 | Grant Photo Products Inc | Means for making electrostatic prints |
US2962374A (en) * | 1956-05-01 | 1960-11-29 | Haloid Xerox Inc | Color xerography |
US2962375A (en) * | 1956-05-02 | 1960-11-29 | Haloid Xerox Inc | Color xerography |
US2919179A (en) * | 1956-05-21 | 1959-12-29 | Haloid Xerox Inc | Resist forming method |
US3057997A (en) * | 1956-05-21 | 1962-10-09 | Edward K Kaprelian | Exposure charged electrophotography |
US3000735A (en) * | 1956-06-11 | 1961-09-19 | Keller Daniel Franklin | Method and apparatus for the reproduction of images |
US2982647A (en) * | 1956-06-14 | 1961-05-02 | Haloid Xerox Inc | Electrostatic image reproduction |
US3112197A (en) * | 1956-06-27 | 1963-11-26 | Azoplate Corp | Electrophotographic member |
US2898468A (en) * | 1956-06-29 | 1959-08-04 | Gen Dynamics Corp | Recording apparatus |
US3178281A (en) * | 1956-07-16 | 1965-04-13 | Eastman Kodak Co | Electrostatic color printing |
US2979402A (en) * | 1956-07-31 | 1961-04-11 | Rca Corp | Electrostatic printing |
US3054897A (en) * | 1956-08-17 | 1962-09-18 | Mason & Sons Ltd E N | Process of and apparatus for printing or copying by electrostatic photography |
US2996400A (en) * | 1956-08-30 | 1961-08-15 | Eastman Kodak Co | Positive and negative electroprinting |
US2966429A (en) * | 1956-08-31 | 1960-12-27 | Gen Electric | Method of and apparatus for making printed circuits |
US2843499A (en) * | 1956-09-25 | 1958-07-15 | Haloid Xerox Inc | Pressure transfer of xerographic images |
US2899335A (en) * | 1956-10-31 | 1959-08-11 | Process for developing electrostatic | |
US3097095A (en) * | 1956-11-21 | 1963-07-09 | Azoplate Corp | Material for electrophotographic reproduction |
US3180729A (en) * | 1956-12-22 | 1965-04-27 | Azoplate Corp | Material for electrophotographic reproduction |
US2954291A (en) * | 1957-01-04 | 1960-09-27 | Haloid Xerox Inc | Method for preparing a spirit duplicating master |
US2934649A (en) * | 1957-01-09 | 1960-04-26 | Haloid Xerox Inc | Induction charging |
US2937943A (en) * | 1957-01-09 | 1960-05-24 | Haloid Xerox Inc | Transfer of electrostatic charge pattern |
US2939787A (en) * | 1957-03-01 | 1960-06-07 | Rca Corp | Exposure of photochemical compositions |
US3028799A (en) * | 1957-03-08 | 1962-04-10 | Keller Daniel Franklin | Apparatus for electrophotographic printing |
US3001872A (en) * | 1957-03-18 | 1961-09-26 | Xerox Corp | Preparing planographic plates and solution therefor |
DE1131707B (en) * | 1957-04-24 | 1962-06-20 | Rank Xerox Ltd | Electrostatic process of transferring insulating particles to a conductive surface in the production of xerographic reproductions |
US2904000A (en) * | 1957-05-15 | 1959-09-15 | Century Geophysical Corp | Magnetic-brush developer |
US3072479A (en) * | 1957-05-29 | 1963-01-08 | Azoplate Corp | Electrophotographic plates comprising solid solutions of oxazolones |
US3045644A (en) * | 1957-06-06 | 1962-07-24 | Xerox Corp | Two-color electrostatic printing apparatus |
US3025160A (en) * | 1957-06-08 | 1962-03-13 | Agfa Ag | Electrostatic printing |
US2957765A (en) * | 1957-06-13 | 1960-10-25 | Gen Aniline & Film Corp | Method of and composition for preparing lithographic printing plates |
US3121006A (en) * | 1957-06-26 | 1964-02-11 | Xerox Corp | Photo-active member for xerography |
US3102045A (en) * | 1957-06-28 | 1963-08-27 | Metcalfe Kenneth Archibald | Production of patterns on cloth or similar substances |
US3143508A (en) * | 1957-07-03 | 1964-08-04 | Edward K Kaprelian | Developer for electrophotography |
US2940847A (en) * | 1957-07-03 | 1960-06-14 | None i red | |
US3140175A (en) * | 1957-07-03 | 1964-07-07 | Edward K Kaprelian | Color electrophotography |
US3043685A (en) * | 1957-07-18 | 1962-07-10 | Xerox Corp | Xerographic and magnetic image recording and reproducing |
US3032432A (en) * | 1957-08-05 | 1962-05-01 | Commw Of Australia | Controlled tone development for electrophotography |
US3037861A (en) * | 1957-09-07 | 1962-06-05 | Kalle Ag | Electrophotographic reproduction material |
US3081165A (en) * | 1957-09-09 | 1963-03-12 | Xerox Corp | Xerographic chemography |
US3015304A (en) * | 1957-10-02 | 1962-01-02 | Xerox Corp | Electrostatic image reproduction |
US3010884A (en) * | 1957-10-28 | 1961-11-28 | Minnesota Mining & Mfg | Electrophotosensitive copy-sheet |
US3056136A (en) * | 1957-10-31 | 1962-09-25 | Jack E Macgriff | Image control device and method of printing |
DE1158987B (en) * | 1957-12-17 | 1963-12-12 | Commw Of Australia | Process for the production of a flat printing form or an etch reserve from a latent electrostatic image |
US3102026A (en) * | 1957-12-24 | 1963-08-27 | Metcalfe Kenneth Archibald | Electrophotographic reflex and contact printing |
US3121007A (en) * | 1958-02-12 | 1964-02-11 | Xerox Corp | Photo-active member for xerography |
US3441437A (en) * | 1958-02-12 | 1969-04-29 | Burroughs Corp | Recording medium and process of developing latent electrostatic image on a recording medium |
US3008826A (en) * | 1958-03-06 | 1961-11-14 | Xerox Corp | Xerographic development |
US3060020A (en) * | 1958-03-20 | 1962-10-23 | Rca Corp | Method of electrophotographically producing a multicolor image |
US3060021A (en) * | 1958-03-20 | 1962-10-23 | Rca Corp | Method for electrophotographically producing a multicolor picture |
US3011473A (en) * | 1958-05-01 | 1961-12-05 | Xerox Corp | Xerographic apparatus |
US3013890A (en) * | 1958-07-08 | 1961-12-19 | Xerox Corp | Process of developing electrostatic images and composition therefor |
US3043686A (en) * | 1958-07-08 | 1962-07-10 | Xerox Corp | Xerographic color masking |
US3057719A (en) * | 1958-07-09 | 1962-10-09 | Xerox Corp | Process for forming electrostatic images |
US3060019A (en) * | 1958-07-22 | 1962-10-23 | Rca Corp | Color electrophotography |
US3116147A (en) * | 1958-08-18 | 1963-12-31 | Plastic Coarting Corp | Coated paper sheet adapted for electrophotographic reproduction |
US2965483A (en) * | 1958-09-23 | 1960-12-20 | Haloid Xerox Inc | Xerographic contrast |
US3311490A (en) * | 1958-09-23 | 1967-03-28 | Harris Intertype Corp | Developing electrostatic charge image with a liquid developer of two immiscible phases |
US2956875A (en) * | 1958-09-26 | 1960-10-18 | Rca Corp | Electrophotographic process for making stencil screens |
US2990280A (en) * | 1958-10-24 | 1961-06-27 | Rca Corp | Electrostatic printing |
US3124456A (en) * | 1958-10-30 | 1964-03-10 | figure | |
US3060051A (en) * | 1958-11-25 | 1962-10-23 | Rca Corp | Method of fusing powder images |
DE1187123B (en) * | 1958-11-28 | 1965-02-11 | Rank Xerox Ltd | Xerographic reproduction apparatus |
US3066023A (en) * | 1958-12-19 | 1962-11-27 | Azoplate Corp | Member for electrophotographic reproduction and process therefor |
US3038442A (en) * | 1958-12-29 | 1962-06-12 | Burroughs Corp | Electrostatic developing apparatus |
US3280741A (en) * | 1958-12-31 | 1966-10-25 | Burroughs Corp | Electrostatic recording |
US3130046A (en) * | 1959-01-07 | 1964-04-21 | Azoplate Corp | Electrophotographic reproduction material |
DE1117391B (en) * | 1959-03-18 | 1961-11-16 | Kalle Ag | Electrophotographic process for the production of printing forms |
US3174854A (en) * | 1959-04-08 | 1965-03-23 | Azoplate Corp | Electrophotographic reproduction material |
US3246983A (en) * | 1959-04-08 | 1966-04-19 | Azoplate Corp | Electrophotographic reproduction process |
US3244516A (en) * | 1959-04-09 | 1966-04-05 | Azoplate Corp | Electrophotographic mateiral and process |
US3206306A (en) * | 1959-04-09 | 1965-09-14 | Azoplate Corp | Material for electrophotographic purposes |
US3180730A (en) * | 1959-04-09 | 1965-04-27 | Azoplate Corp | Material for electrophotographic purposes |
US3245783A (en) * | 1959-04-09 | 1966-04-12 | Azoplate Corp | Material for electrophotographic purposes |
US3053688A (en) * | 1959-04-13 | 1962-09-11 | Rca Corp | Electrostatic printing |
US3089953A (en) * | 1959-04-15 | 1963-05-14 | Kalle Ag | Reproduction process |
US3079272A (en) * | 1959-04-24 | 1963-02-26 | Rca Corp | Method of developing an electrostatic image |
US3076722A (en) * | 1959-04-29 | 1963-02-05 | Rca Corp | Electrostatic printing |
US3057720A (en) * | 1959-05-04 | 1962-10-09 | Xerox Corp | Xerographic color reproduction |
US3166418A (en) * | 1959-05-07 | 1965-01-19 | Xerox Corp | Image development |
US3166432A (en) * | 1959-05-07 | 1965-01-19 | Xerox Corp | Image development |
US3108894A (en) * | 1959-05-18 | 1963-10-29 | Burroughs Corp | Electrostatic charge production |
US3083622A (en) * | 1959-06-12 | 1963-04-02 | Robertson Photo Mechanix Inc | Xerographic apparatus |
US3162532A (en) * | 1959-06-25 | 1964-12-22 | Azoplate Corp | Photoconductive layers for electrophotographic purposes |
US3159483A (en) * | 1959-07-14 | 1964-12-01 | Azoplate Corp | Process for the preparation of electrophotographic reversed images |
US3294531A (en) * | 1959-07-22 | 1966-12-27 | Azoplate Corp | Photoconductive layers for electrophotographic purposes |
DE1153769B (en) * | 1959-10-22 | 1963-09-05 | Gerhard Ritzerfeld | Process for generating, renewing and printing xerographically produced hectographic printing forms |
DE1153769C2 (en) * | 1959-10-22 | 1973-05-30 | Gerhard Ritzerfeld | Process for the production, renewal and printing of xerographically produced hectographic printing forms |
US3031572A (en) * | 1959-11-05 | 1962-04-24 | Charles E Ryan | Infrared xerography |
US3234017A (en) * | 1959-11-05 | 1966-02-08 | Agfa Ag | Process for the production of developed electrophotographic images including application of a breakdown potential to discrete small areas of a photoconductor |
US3236640A (en) * | 1959-12-29 | 1966-02-22 | Azoplate Corp | Process for the preparation of printing plates using particularly a photoconductivemultilayer structure |
US3146100A (en) * | 1960-01-26 | 1964-08-25 | Bohn Business Machines Inc | Electronic photocopying apparatus and method |
US3110621A (en) * | 1960-02-01 | 1963-11-12 | Warren S D Co | Electrostatic recording paper |
US3205354A (en) * | 1960-02-13 | 1965-09-07 | Azoplate Corp | Electrothermographic reproduction process |
US3234018A (en) * | 1960-03-18 | 1966-02-08 | Lumoprint Zindler Kg | Method for developing copies using electrophotographic layers |
US3158475A (en) * | 1960-03-31 | 1964-11-24 | Gevaert Photo Prod Nv | Electrophotographic material |
US3279918A (en) * | 1960-03-31 | 1966-10-18 | Gevaert Photo Prod Nv | Electrophotographic material |
US3132037A (en) * | 1960-04-04 | 1964-05-05 | Xerox Corp | Xerographic transfer method |
US3172827A (en) * | 1960-04-18 | 1965-03-09 | Permanent reproductions | |
US3172826A (en) * | 1960-04-18 | 1965-03-09 | Minnesota Mining & Mfg | Photoconductography employing organic onium cation |
DE1271548B (en) * | 1960-05-10 | 1968-06-27 | Zeiss Ikon Ag | Electrophotographic process |
US3650797A (en) * | 1960-07-27 | 1972-03-21 | Kalle Ag | Developing electrostatic latent images with a mixture of positive and negative toners |
US3226227A (en) * | 1960-09-02 | 1965-12-28 | Rca Corp | Method of producing a solvent-resistant pattern using developed electrostatic image formation techniques |
DE1193515B (en) * | 1960-09-02 | 1965-05-26 | Rca Corp | Xerographic process for the production of an etched printing or circuit plate |
US3253913A (en) * | 1960-10-13 | 1966-05-31 | Eastman Kodak Co | Process for color electrophotography |
US3199086A (en) * | 1960-11-25 | 1965-08-03 | Rahn Corp | Devices exhibiting internal polarization and apparatus for and methods of utilizing the same |
US3196029A (en) * | 1960-12-10 | 1965-07-20 | Kalle Aktiengeselslchaft | Heat-copying process |
US3161505A (en) * | 1961-01-28 | 1964-12-15 | Azoplate Corp | Material for electrophotographic purposes |
US3234019A (en) * | 1961-04-10 | 1966-02-08 | Xerox Corp | Method for formation of an electrostatic image resistant to deterioration on storage |
US3241957A (en) * | 1961-06-08 | 1966-03-22 | Harris Intertype Corp | Method of developing electrostatic images and liquid developer |
US3212888A (en) * | 1961-06-12 | 1965-10-19 | Xerox Corp | Method for developing latent electrostatic charge halftone images |
US3212889A (en) * | 1961-06-12 | 1965-10-19 | Xerox Corp | Xerographic contrast control |
US3357830A (en) * | 1961-08-03 | 1967-12-12 | Xerox Corp | Dyed image xerography |
US3182573A (en) * | 1961-08-11 | 1965-05-11 | Xerox Corp | Masked plate xerography |
US3133484A (en) * | 1961-09-29 | 1964-05-19 | Rca Corp | Electrostatic printing apparatus |
US3262806A (en) * | 1961-12-16 | 1966-07-26 | Azoplate Corp | Three component magnetic developer for electrophotographic purposes and method for using it |
US3386379A (en) * | 1962-04-04 | 1968-06-04 | Xerox Corp | Duplicating with color producing reagents |
US3196008A (en) * | 1962-05-08 | 1965-07-20 | Xerox Corp | Electrophotographic process for formation of frost-like deformation images in mechanically deformable photoconductive layers |
US3234904A (en) * | 1962-06-15 | 1966-02-15 | Xerox Corp | Device for tesiprinting |
US3245823A (en) * | 1962-08-01 | 1966-04-12 | Xerox Corp | Electrostatic image development apparatus |
US3305359A (en) * | 1962-10-04 | 1967-02-21 | Photoelectric Ltd | Manufacture of printing plates |
US3256791A (en) * | 1962-11-02 | 1966-06-21 | Azoplate Corp | Electrophotographic process and apparatus for the automatic and continuous reproduction of originals |
US3190199A (en) * | 1963-01-02 | 1965-06-22 | Xerox Corp | Xerographic copying apparatus |
US3275478A (en) * | 1963-02-21 | 1966-09-27 | Fmc Corp | Method of making a battery separator containing colloidal metal |
US3399060A (en) * | 1963-04-16 | 1968-08-27 | Little Inc A | Electrophotographic product and method for achieving electrophotographic copying |
US3321307A (en) * | 1963-07-15 | 1967-05-23 | Eastman Kodak Co | Exposure control in xerographic printing |
US3419411A (en) * | 1963-09-06 | 1968-12-31 | Australia Res Lab | Method for the transfer of developed electrostatic images using a lattice forming substance |
US3369917A (en) * | 1963-09-10 | 1968-02-20 | Daniel B. Granzow | Magnetic brush development of electrostatic images utilizing a high voltage corona |
US3301676A (en) * | 1963-10-12 | 1967-01-31 | Azoplate Corp | Process and material for the production of electrophotographic images |
US3326709A (en) * | 1963-10-18 | 1967-06-20 | Eastman Kodak Co | Electrostatic printing |
DE1216692B (en) * | 1963-11-19 | 1966-05-12 | Dick Co Ab | Electrophotographic copying process and device for carrying out the process |
US3278323A (en) * | 1963-12-26 | 1966-10-11 | Dick Co Ab | Method of producing imaged spirit master directly from original |
US3518081A (en) * | 1964-02-17 | 1970-06-30 | Xerox Corp | Image formation and development |
USRE29357E (en) * | 1964-02-17 | 1977-08-16 | Xerox Corporation | Image formation and development |
US3406063A (en) * | 1964-03-11 | 1968-10-15 | Australia Res Lab | Xerographic material containing an inorganic photoconductor and nonpolymeric crystalline organic substances and methods of using of such material |
US3379553A (en) * | 1964-03-20 | 1968-04-23 | Ibm | Continuous tone development method for xerographic printing |
US3764538A (en) * | 1964-04-06 | 1973-10-09 | Addressograph Multigraph | Electroscopic printing powder |
US3468254A (en) * | 1964-05-28 | 1969-09-23 | Gerhard Ritzerfeld | Electrostatically chargeable printing form |
US3960555A (en) * | 1964-10-12 | 1976-06-01 | Xerox Corporation | Photographic charging and imaging process |
US3411903A (en) * | 1964-11-23 | 1968-11-19 | Xerox Corp | Xerographic method and plate comprising photoconductive insulating fibers |
US3363558A (en) * | 1965-03-02 | 1968-01-16 | Everett A. Johnson | Tabulatable recording and duplicating master |
US3391082A (en) * | 1965-04-06 | 1968-07-02 | Koppers Co Inc | Method of making xergographic toner compositions by emulsion polymerization |
US3473923A (en) * | 1965-04-14 | 1969-10-21 | Fuji Photo Film Co Ltd | Reproduction process including transfer and redevelopment of electrostatically formed images |
US3414409A (en) * | 1965-04-30 | 1968-12-03 | Xerox Corp | Particle transfer |
US3791823A (en) * | 1965-05-28 | 1974-02-12 | Xerox Corp | Photoelectrophoretic imaging transfer method |
US3329500A (en) * | 1965-06-07 | 1967-07-04 | Xerox Corp | Electrostatic frosting |
US3510338A (en) * | 1965-08-06 | 1970-05-05 | Inmont Corp | Method of electrostatic printing |
US3523813A (en) * | 1965-09-02 | 1970-08-11 | Willy Koller | Application of a printed impression of metal powder onto articles |
US3399140A (en) * | 1965-09-07 | 1968-08-27 | American Photocopy Equip Co | Liquid developer for electrostatic printing |
US3455240A (en) * | 1965-09-13 | 1969-07-15 | Xerox Corp | Imaging system |
US3493412A (en) * | 1965-12-30 | 1970-02-03 | Xerox Corp | Transferring xerographic toner images to a solid crystalline plasticizer coated receiving surface |
US3965021A (en) * | 1966-01-14 | 1976-06-22 | Xerox Corporation | Electrostatographic toners using block copolymers |
US3482970A (en) * | 1966-01-21 | 1969-12-09 | Xerox Corp | Electrophotographic plate and process using naphthylazo compounds as the primary photoconductor |
US3486889A (en) * | 1966-02-07 | 1969-12-30 | Harris Intertype Corp | Cellulosic photoconductive imaging member containing carboxyl reactive groups |
US3415186A (en) * | 1966-02-10 | 1968-12-10 | Xerox Corp | Duplicating system |
US3884687A (en) * | 1966-02-14 | 1975-05-20 | Union Carbide Corp | Electrostatic printing process |
US3519420A (en) * | 1966-06-28 | 1970-07-07 | Xerox Corp | Method of charging a zinc oxide photoconductive layer with a positive charge |
DE1797619B1 (en) * | 1966-06-29 | 1977-11-24 | Xerox Corp | ELECTROPHORETOPHOTOGRAPHIC IMAGING PROCEDURE |
DE1797635B1 (en) * | 1966-06-29 | 1977-11-10 | Xerox Corp | ELECTROPHORETOPHOTOGRAPHIC IMAGING PROCEDURE |
DE1797620B1 (en) * | 1966-06-29 | 1977-11-10 | Xerox Corp | ELECTROPHORETOPHOTOGRAPHIC IMAGING PROCEDURE |
US3490903A (en) * | 1966-07-20 | 1970-01-20 | Xerox Corp | Alloys of antimony and selenium used in photoconductive elements |
US3479268A (en) * | 1966-08-01 | 1969-11-18 | Gen Electric | Method of applying a binder to electro phoretically deposited porous matrix |
US3561358A (en) * | 1966-10-10 | 1971-02-09 | Xerox Corp | Gravure imaging system |
US3607259A (en) * | 1967-01-06 | 1971-09-21 | Australia Res Lab | Package of charged photoconductive recording elements for electrophotography |
US3502582A (en) * | 1967-06-19 | 1970-03-24 | Xerox Corp | Imaging systems |
US3569803A (en) * | 1967-08-15 | 1971-03-09 | Fuji Photo Film Co Ltd | Electrophotographic process utilizing friction charging |
US3533788A (en) * | 1967-08-25 | 1970-10-13 | Minnesota Mining & Mfg | Image recording sheet |
US3547631A (en) * | 1967-10-26 | 1970-12-15 | Hughes Aircraft Co | Pacification of image recording media comprising applying a thin polymer film over the image surface |
US3640749A (en) * | 1968-03-14 | 1972-02-08 | Philips Corp | Method of fixing images consisting of dry powders on paper |
US3450564A (en) * | 1968-04-01 | 1969-06-17 | Gen Electrodynamics Corp | Making photoconductive target of selenium and sulphur |
US4046505A (en) * | 1968-04-08 | 1977-09-06 | Imperial Chemical Industries Limited | Post dyeing resin particles fixed to resin base |
US3592541A (en) * | 1968-09-30 | 1971-07-13 | Gourdine Systems Inc | Copying system using electrogasdynamics |
US3755177A (en) * | 1969-02-04 | 1973-08-28 | Xerox Corp | Process of making liquid electrostatic developers containing gelatin |
US3718593A (en) * | 1969-02-05 | 1973-02-27 | Fuji Photo Film Co Ltd | Process for the production of an electrophotographic liquid developer containing gelatin |
US3654865A (en) * | 1969-02-05 | 1972-04-11 | Fuji Photo Film Co Ltd | Method for forming dye image using an electrophotographic developer containing a gelatin toner |
DE2032652A1 (en) * | 1969-07-01 | 1971-01-14 | Xerox Corp , Rochester, N Y (VStA) | Composition of substances for improving the electrical properties of a photoconductor used for electrophotographic purposes and the process used therefor |
US3669850A (en) * | 1969-07-18 | 1972-06-13 | Cedo Draca | Method for the production of abrasive brushing elements |
US3650754A (en) * | 1969-07-31 | 1972-03-21 | Keuffel & Esser Co | Photoresist compositions containing limed rosin and photoactinator |
US3907559A (en) * | 1969-10-03 | 1975-09-23 | Xerox Corp | Imaging process employing friction charging in the presence of an electrically insulating developer liquid |
US4081273A (en) * | 1970-01-02 | 1978-03-28 | Xerox Corporation | Migration imaging method |
US4012250A (en) * | 1970-01-02 | 1977-03-15 | Xerox Corporation | Imaging system |
DE2132017A1 (en) * | 1970-06-29 | 1972-02-10 | Xerox Corp | Electrophotographic copier paper |
US3967959A (en) * | 1970-12-14 | 1976-07-06 | Xerox Corporation | Migration imaging system |
US4459344A (en) * | 1970-12-21 | 1984-07-10 | Ezekiel Jacob J | Method for producing raised images by xerographic means |
US3933488A (en) * | 1972-05-17 | 1976-01-20 | Fuji Photo Film Co., Ltd. | Information display method |
US3935008A (en) * | 1972-06-23 | 1976-01-27 | Hoechst Aktiengesellschaft | Electrophotographic process having developed hydrophilic image areas |
US3971658A (en) * | 1973-03-14 | 1976-07-27 | Xerox Corporation | Imaging process employing friction charging in the presence of an electrically insulating liquid |
US3958989A (en) * | 1973-06-06 | 1976-05-25 | Xerox Corporation | Transparency support material for electrophotographic process |
US3951652A (en) * | 1973-07-17 | 1976-04-20 | Fuji Photo Film Co., Ltd. | Method of forming image on sulfur based photosensitive member |
US3958988A (en) * | 1974-02-19 | 1976-05-25 | A. B. Dick Company | Photoconductors having improved sensitivity by presence of a like polar fields during imaging |
US4021358A (en) * | 1974-07-12 | 1977-05-03 | Konishiroku Photo Industry Co., Ltd. | Toner for developing electrostatic latent images |
US3959934A (en) * | 1974-10-04 | 1976-06-01 | Xerox Corporation | Composition and method for repairing selenium photoreceptors |
US4014696A (en) * | 1975-02-05 | 1977-03-29 | Xerox Corporation | Multicolored xerographic transparency utilizing an aliphatic ester coating |
US3977871A (en) * | 1975-08-15 | 1976-08-31 | International Business Machines Corporation | Electrophotographic developer with fibers of polytetrafluoroethylene |
DE2733187A1 (en) * | 1976-07-23 | 1978-01-26 | Ricoh Kk | SELENIUM BASED PHOTO-SENSITIVE MATERIAL FOR ELECTROPHOTOGRAPHY |
DE2803618A1 (en) * | 1977-01-28 | 1978-08-03 | Canon Kk | PROCESS AND EQUIPMENT FOR DEVELOPMENT OF ELECTROSTATIC CHARGE PATTERNS |
US4373469A (en) * | 1977-01-28 | 1983-02-15 | Canon Kabushiki Kaisha | Apparatus for developing electrostatic latent images |
US4314017A (en) * | 1978-01-26 | 1982-02-02 | Canon Kabushiki Kaisha | Developer without carrier powder having an improved triboelectric charging property |
US4359516A (en) * | 1978-03-28 | 1982-11-16 | E. I. Du Pont De Nemours And Company | Magnetic resist printing process, composition, and apparatus |
DE2911290A1 (en) * | 1978-05-15 | 1979-11-22 | Xerox Corp | A FIXED STITCHING MACHINE HEAD |
DE2920291A1 (en) * | 1978-09-20 | 1980-04-10 | Xerox Corp | BELT TENSIONING SYSTEM |
US4226930A (en) * | 1978-11-08 | 1980-10-07 | Nippon Paint Co., Ltd. | Electrophotographic method for producing photopolymer printing plate |
US4391512A (en) * | 1979-01-06 | 1983-07-05 | Canon Kabushiki Kaisha | Developing device using magnetic developer |
DE3008881A1 (en) * | 1979-03-09 | 1980-09-18 | Canon Kk | DEVELOPMENT PROCEDURE |
US4504563A (en) * | 1979-04-09 | 1985-03-12 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic latent image containing copolymer of vinyl compound and acid monomer |
US4340660A (en) * | 1979-04-24 | 1982-07-20 | Canon Kabushiki Kaisha | Toner for development having crosslinked polymers |
US4299898A (en) * | 1979-05-03 | 1981-11-10 | Xerox Corporation | Positively charged toners containing quaternary ammonium salts attached to acrylate polymers |
US4499168A (en) * | 1979-07-17 | 1985-02-12 | Canon Kabushiki Kaisha | Fixing method |
DE2950483A1 (en) * | 1979-12-14 | 1981-06-19 | Siemens AG, 1000 Berlin und 8000 München | Flaw detection in electrophotographic photoconductor drum coating - by electrostatic charging to form halo on coating and enlarging by Lichtenberg figure |
DE3111558C2 (en) * | 1980-03-25 | 1989-01-05 | Canon K.K., Tokio/Tokyo, Jp | |
DE3111558A1 (en) * | 1980-03-25 | 1982-02-04 | Canon K.K., Tokyo | METHOD AND DEVICE FOR GENERATING AND RECORDING COMPOSED IMAGES |
DE3117210A1 (en) * | 1980-04-30 | 1982-02-18 | Tokyo Shibaura Denki K.K., Kawasaki, Kanagawa | TRANSMISSION DEVICE |
US4337303A (en) * | 1980-08-11 | 1982-06-29 | Minnesota Mining And Manufacturing Company | Transfer, encapsulating, and fixing of toner images |
US4565766A (en) * | 1980-11-11 | 1986-01-21 | Canon Kabushiki Kaisha | Developing powder |
US4481274A (en) * | 1980-11-11 | 1984-11-06 | Canon Kabushiki Kaisha | Developing powder having oinylic, crosslinked binder and olefin polymer |
US4472491A (en) * | 1981-05-30 | 1984-09-18 | Hoechst Aktiengesellschaft | Electrophotographic recording material having protective layer and process for the production thereof |
US4374212A (en) * | 1981-07-29 | 1983-02-15 | Xerox Corporation | Sheet handling device |
US4470693A (en) * | 1982-01-11 | 1984-09-11 | Pitney Bowes Inc. | Self-cleaning xerographic apparatus |
US4946755A (en) * | 1982-04-01 | 1990-08-07 | Canon Kabushiki Kaisha | Electrophotographic one component magnetic toner comprising hydrophobic silica and iron oxide |
US4518672A (en) * | 1982-05-21 | 1985-05-21 | Canon Kabushiki Kaisha | Cyan color toner for developing electrostatic image |
US4533617A (en) * | 1982-05-26 | 1985-08-06 | Canon Kabushiki Kaisha | Heat fixing developer of capsule structure |
US4599289A (en) * | 1982-05-27 | 1986-07-08 | Canon Kabushiki Kaisha | Pressure-fixable encapsulated toner |
US4533616A (en) * | 1982-06-01 | 1985-08-06 | Canon Kabushiki Kaisha | Developer for electrophotography of toner and microencapsulated additive |
US4533614A (en) * | 1982-06-01 | 1985-08-06 | Canon Kabushiki Kaisha | Heat-fixable dry system toner |
US4507376A (en) * | 1982-07-23 | 1985-03-26 | Arakawa Kagaku Kogyo Kabushiki Kaisha | Electrophotographic toner composition |
DE3331592A1 (en) | 1982-09-01 | 1984-03-01 | Fuji Photo Film Co., Ltd., Minamiashigara, Kanagawa | DISAZO CONNECTIONS AND PHOTO-CONDUCTIVE COMPOSITIONS CONTAINING THEM AND ELECTROPHOTOGRAPHIC LIGHT-SENSITIVE RECORDING MATERIALS |
US4590139A (en) * | 1982-09-27 | 1986-05-20 | Canon Kabushiki Kaisha | Three color toner kit and method of use |
US4857433A (en) * | 1984-01-17 | 1989-08-15 | Mitsui Toatsu Chemicals, Incorporated | Electrophotographic toner for high speed electrophotography |
DE3546817C2 (en) * | 1984-04-28 | 1996-05-23 | Canon Kk | Binder resin for toner useful in electrophotography etc. |
DE3514835A1 (en) | 1984-04-28 | 1985-10-31 | Canon K.K., Tokio/Tokyo | Binder resin for toner useful in electrophotography etc. |
US4877704A (en) * | 1984-05-31 | 1989-10-31 | Konishiroku Photo Industry Co., Ltd. | Process for developing latent electrostatic image using toner containing polyester resin |
US4737431A (en) * | 1984-08-29 | 1988-04-12 | Faco Corporation Ltd. | Negative-electrification finely-divided toner in use for electrophotography |
US5112714A (en) * | 1984-08-30 | 1992-05-12 | Canon Kabushiki Kaisha | Dry magnetic electrostatic developer |
US4705696A (en) * | 1984-09-27 | 1987-11-10 | Olin Hunt Specialty Products Inc. | Method of making a lithographic printing plate, printing plates made by the method, and the use of such printing plates to make lithographic prints |
US4978596A (en) * | 1985-03-25 | 1990-12-18 | Hitachi, Ltd. | Electrophotographic toner comprising lactone-modified epoxy resin |
EP0201923A2 (en) * | 1985-05-15 | 1986-11-20 | Lichtenberg & Co Chemische Fabrik Zweigniederlassung der UK-Mineralölwerke Wenzel & Weidmann GmbH, Eschweiler | Method for coating solid bodies with lubricants |
EP0201923A3 (en) * | 1985-05-15 | 1988-01-27 | Lichtenberg & Co Chemische Fabrik Zweigniederlassung Der Uk-Mineralolwerke Wenzel & Weidmann Gmbh, Eschweiler | Method for coating solid bodies with lubricants |
US4786939A (en) * | 1985-08-23 | 1988-11-22 | Konishiroku Photo Industry Co., Ltd. | Image forming apparatus |
US5322752A (en) * | 1986-04-15 | 1994-06-21 | Xerox Corporation | Development process for abrasion resistant documents |
US4931375A (en) * | 1986-07-22 | 1990-06-05 | Konishiroku Photo Industry Co., Ltd. | Powdered electrostatic image developing toner |
US4966829A (en) * | 1986-09-08 | 1990-10-30 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, binder therefor and process for production thereof |
US4761668A (en) * | 1986-09-29 | 1988-08-02 | Xerox Corporation | Highlight color printer |
US4731634A (en) * | 1986-11-03 | 1988-03-15 | Xerox Corporation | Apparatus for printing black and plural highlight color images in a single pass |
US4863825A (en) * | 1986-11-10 | 1989-09-05 | Toyo Ink Manufacturing Co., Ltd. | Low temperature electrophotographic toner composition comprising nonlinear polyester resin |
US4771314A (en) * | 1986-12-29 | 1988-09-13 | Xerox Corporation | Developer apparatus for a highlight printing apparatus |
US4761672A (en) * | 1987-07-28 | 1988-08-02 | Xerox Corporation | Ramped developer biases |
US5106715A (en) * | 1988-02-10 | 1992-04-21 | Fuji Xerox Co., Ltd. | Toner composition with polyethylene and inorganic external additive |
US4859411A (en) * | 1988-04-08 | 1989-08-22 | Xerox Corporation | Control of selenium alloy fractionation |
US4988591A (en) * | 1988-05-06 | 1991-01-29 | Hoechst Aktiengesellschaft | Process for producing color images |
US5202213A (en) * | 1988-08-31 | 1993-04-13 | Canon Kabushiki Kaisha | Developer with surface treated silicic acid for developing electrostatic image |
US5066558A (en) * | 1988-09-30 | 1991-11-19 | Canon Kabushiki Kaisha | Developer for developing electrostatic images |
US5215854A (en) * | 1988-10-05 | 1993-06-01 | Canon Kabushiki Kaisha | Process for producing microcapsule toner |
US5173387A (en) * | 1988-11-02 | 1992-12-22 | Kao Corporation | Electrophotographic dry developer |
US5084369A (en) * | 1989-03-13 | 1992-01-28 | Canon Kabushiki Kaisha | Toner containing a dimer of diarylguanidine type compound for developing electrostatic image |
US5214208A (en) * | 1989-03-13 | 1993-05-25 | Canon Kabushiki Kaisha | Toner containing a dimer of diarylguanidine type compound for developing electrostatic image |
US5321091A (en) * | 1989-05-29 | 1994-06-14 | Canon Kabushiki Kaisha | Binder resin used in a toner |
US5523190A (en) * | 1989-07-28 | 1996-06-04 | Canon Kabushiki Kaisha | Magnetic toner and recording method |
US5407769A (en) * | 1989-07-28 | 1995-04-18 | Canon Kabushiki Kaisha | Magnetic toner having triaryl methyl organic resin |
US5021318A (en) * | 1989-07-28 | 1991-06-04 | Xerox Corporation | Process for forming secure images |
US5126224A (en) * | 1989-09-14 | 1992-06-30 | Canon Kabushiki Kaisha | Electrostatic image developing toner and process for its production, and binder resin and process for its production |
US5147753A (en) * | 1989-09-19 | 1992-09-15 | Canon Kabushiki Kaisha | Process for producing toner for developing electrostatic image |
US5202731A (en) * | 1989-09-27 | 1993-04-13 | Canon Kabushiki Kaisha | Image forming apparatus having an alternating bias electric field |
US5175070A (en) * | 1989-09-27 | 1992-12-29 | Canon Kabushiki Kaisha | Image forming method and image forming apparatus |
US5422215A (en) * | 1989-10-17 | 1995-06-06 | Canon Kabushiki Kaisha | Magnetic toner |
US5356749A (en) * | 1989-10-18 | 1994-10-18 | Canon Kabushiki Kaisha | Imaging method comprising a developer having a novel guanidine type compound |
US5246810A (en) * | 1989-10-18 | 1993-09-21 | Canon Kabushiki Kaisha | Guanidine type compound, toner for developing electrostatic images, developer for developing electrostatic images |
US5215848A (en) * | 1989-10-31 | 1993-06-01 | Canon Kabushiki Kaisha | Carrier for electrophotography, two-component type developer, process for producing carrier and image forming method |
US5217836A (en) * | 1989-11-09 | 1993-06-08 | Canon Kabushiki Kaisha | Toner for developing electrostatic images |
US5212524A (en) * | 1989-11-09 | 1993-05-18 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, image forming method and image forming apparatus |
US5180649A (en) * | 1989-11-09 | 1993-01-19 | Canon Kabushiki Kaisha | Toner having crosslinkages and method of fixing same |
US5169738A (en) * | 1989-11-09 | 1992-12-08 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, image forming method and image forming apparatus |
US5422707A (en) * | 1989-11-09 | 1995-06-06 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, detachable apparatus, image forming apparatus and facsimile apparatus |
US5219946A (en) * | 1989-11-09 | 1993-06-15 | Canon Kk | Binder resin and process for producing it |
US5262259A (en) * | 1990-01-03 | 1993-11-16 | Minnesota Mining And Manufacturing Company | Toner developed electrostatic imaging process for outdoor signs |
US5135833A (en) * | 1990-01-19 | 1992-08-04 | Canon Kabushiki Kaisha | Electrostatic image developing toner and fixing method |
US5298354A (en) * | 1990-01-19 | 1994-03-29 | Canon Kabushiki Kaisha | Electrostatic image developing toner and fixing method |
US5185496A (en) * | 1990-03-02 | 1993-02-09 | Canon Kabushiki Kaisha | Electrostatic latent image device having a coating layer provided on a developer carrying member |
US5219697A (en) * | 1990-03-08 | 1993-06-15 | Canon Kabushiki Kaisha | Toner for developing electrostatic image comprising color resin particles having an irregular shape |
US5225308A (en) * | 1990-04-11 | 1993-07-06 | Kao Corporation | Encapsulated toner for heat-and-pressure fixing |
EP0466149A1 (en) | 1990-07-12 | 1992-01-15 | Canon Kabushiki Kaisha | Toner, developer, and image forming method |
US5166041A (en) * | 1990-07-23 | 1992-11-24 | Showa Denko K.K. | Near infrared ray-decolorizable recording material |
US5241019A (en) * | 1990-07-30 | 1993-08-31 | Mitsui Toatsu Chemicals, Inc. | Binder for dry toner |
US5391450A (en) * | 1990-07-31 | 1995-02-21 | Canon Kabushiki Kaisha | Toner image heat-fixing method |
US5338894A (en) * | 1990-09-21 | 1994-08-16 | Canon Kabushiki Kaisha | Image forming method with improved development |
US5504272A (en) * | 1990-09-21 | 1996-04-02 | Canon Kabushiki Kaisha | Magnetic toner having defined particle distribution |
US5500318A (en) * | 1990-11-29 | 1996-03-19 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and fixing method |
US5389487A (en) * | 1990-11-29 | 1995-02-14 | Canon Kabushiki Kaisha | Image forming process, image-forming apparatus, apparatus unit, and facsimile apparatus |
US5418102A (en) * | 1990-11-29 | 1995-05-23 | Canon Kabushiki Kaisha | Developer for developing electrostatic image, image forming method, toner imager fixing method and image forming apparatus |
US5330871A (en) * | 1990-11-29 | 1994-07-19 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5338638A (en) * | 1990-11-29 | 1994-08-16 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and process for production thereof |
US5288579A (en) * | 1990-11-30 | 1994-02-22 | Canon Kabushiki Kaisha | Developer for developing electrostatic image, image forming apparatus, apparatus unit and facsimile apparatus |
US5268248A (en) * | 1990-11-30 | 1993-12-07 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and process for production thereof |
US5260748A (en) * | 1990-12-14 | 1993-11-09 | Infographix, Inc. | Electrostatic image developer dispenser |
US5250382A (en) * | 1990-12-25 | 1993-10-05 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, and image fixing method |
US5853938A (en) * | 1991-01-11 | 1998-12-29 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5234788A (en) * | 1991-01-18 | 1993-08-10 | Kao Corporation | Developer composition for electrophotography |
US5234787A (en) * | 1991-01-18 | 1993-08-10 | Kao Corporation | Developer composition for electrophotography |
US5306588A (en) * | 1991-03-19 | 1994-04-26 | Canon Kabushiki Kaisha | Treated silica fine powder and toner for developing electrostatic images |
US5300386A (en) * | 1991-03-22 | 1994-04-05 | Canon Kabushiki Kaisha | Developer for developing electrostatic image, image forming method and heat fixing method |
US5208093A (en) * | 1991-03-29 | 1993-05-04 | Minnesota Mining And Manufacturing Company | Film construction for use in a plain paper copier |
US5500046A (en) * | 1991-04-16 | 1996-03-19 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, image forming apparatus, apparatus unit and facsimile apparatus |
US5389484A (en) * | 1991-04-16 | 1995-02-14 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, image forming apparatus, apparatus unit and facsimile apparatus |
US5508138A (en) * | 1991-05-17 | 1996-04-16 | Hitachi, Ltd. | Fixing device for electrophotography and electrophotographic apparatus incorporating the fixing device |
US5363180A (en) * | 1991-05-17 | 1994-11-08 | Hitachi, Ltd. | Fixing device for electrophotography and electrophotographic apparatus incorporating the fixing device |
US5519479A (en) * | 1991-05-17 | 1996-05-21 | Hitachi, Ltd. | Fixing device for electrophotography and electrophotographic apparatus incorporating the fixing device |
US5649273A (en) * | 1991-05-17 | 1997-07-15 | Hitachi, Ltd. | Belt-type fixing device having an irregular surface contour |
US5716746A (en) * | 1991-06-19 | 1998-02-10 | Canon Kabushiki Kaisha | Magnetic toner and process for producing magnetic toner |
US5604071A (en) * | 1991-07-16 | 1997-02-18 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5330870A (en) * | 1991-09-07 | 1994-07-19 | Kao Corporation | Developer composition for electrophotography for flash fusing |
US5476745A (en) * | 1991-09-09 | 1995-12-19 | Canon Kabushiki Kaisha | Process for producing toner particles |
US5364722A (en) * | 1991-09-11 | 1994-11-15 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and heat-fixing method comprising a hydrocarbon wax |
US5424810A (en) * | 1991-09-13 | 1995-06-13 | Canon Kabushiki Kaisha | Magnetic toner, magnetic developer, apparatus unit, image forming apparatus and facsimile apparatus |
US5558967A (en) * | 1991-09-19 | 1996-09-24 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and two-component type developer for developing electrostatic image |
US5354640A (en) * | 1991-09-25 | 1994-10-11 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5407776A (en) * | 1991-09-25 | 1995-04-18 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5298309A (en) * | 1991-11-05 | 1994-03-29 | Minnesota Mining And Manufacturing Company | Film construction for use in a plain paper copier |
US5348829A (en) * | 1991-11-08 | 1994-09-20 | Canon Kabushiki Kaisha | Monocomponent-type developer for developing electrostatic image and image forming method |
EP0541113A1 (en) | 1991-11-08 | 1993-05-12 | Canon Kabushiki Kaisha | Monocomponent-type developer for developing electrostatic image and image forming method |
US5494770A (en) * | 1992-01-15 | 1996-02-27 | Canon Kabushiki Kaisha | Image forming method using magnetic brush and specific carrier |
US5391247A (en) * | 1992-01-24 | 1995-02-21 | Revlon Consumer Products Corporation | Hot stamping glass |
US5384224A (en) * | 1992-03-06 | 1995-01-24 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5547796A (en) * | 1992-05-27 | 1996-08-20 | Canon Kabushiki Kaisha | Developer containing insulating magnetic toner flowability-improving agent and inorganic fine powder |
US5447815A (en) * | 1992-06-04 | 1995-09-05 | Canon Kabushiki Kaisha | Developer for developing electrostatic image and image forming method |
US5849453A (en) * | 1992-06-08 | 1998-12-15 | Canon Kabushiki Kaisha | Image forming method including recycling of untransferred toner collected from image bearing member to developing means |
US5447813A (en) * | 1992-06-19 | 1995-09-05 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and image forming method |
US5436701A (en) * | 1992-06-19 | 1995-07-25 | Canon Kabushiki Kaisha | Image forming method, image forming apparatus and apparatus unit |
US5406357A (en) * | 1992-06-19 | 1995-04-11 | Canon Kabushiki Kaisha | Developer for developing electrostatic image, image forming method, image forming apparatus and apparatus unit |
US5576133A (en) * | 1992-07-22 | 1996-11-19 | Canon Kabushiki Kaisha | Carrier for use in electrophotography, two component-type developer and image forming method |
US5439771A (en) * | 1992-07-28 | 1995-08-08 | Canon Kabushiki Kaisha | Carrier for use in electrophotography, two component-type developer and image forming method |
US5332640A (en) * | 1992-07-31 | 1994-07-26 | Xerox Corporation | Toner compositions with dendrimer charge enhancing additives |
US5863695A (en) * | 1992-08-25 | 1999-01-26 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and image forming method |
US5629122A (en) * | 1992-08-25 | 1997-05-13 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and image forming method |
US5283148A (en) * | 1992-09-18 | 1994-02-01 | Minnesota Mining And Manufacturing Company | Liquid toners for use with perfluorinated solvents |
US6632577B2 (en) | 1992-10-15 | 2003-10-14 | Canon Kabushiki Kaisha | Image forming method |
US5439769A (en) * | 1992-12-16 | 1995-08-08 | Seiko Epson Corporation | Developing method and system |
US5659858A (en) * | 1992-12-16 | 1997-08-19 | Seiko Epson Corporation | Developing method and system |
US5766813A (en) * | 1992-12-16 | 1998-06-16 | Seiko Epson Corporation | Developing method and system for transferring toner from a toner carrier member to a latent image carrier |
US5582950A (en) * | 1992-12-18 | 1996-12-10 | Fujitsu Limited | Process for producing flash fusing color toner |
US5378570A (en) * | 1993-01-05 | 1995-01-03 | Fuji Xerox Co., Ltd. | Electrophotographic photoreceptor |
US5578409A (en) * | 1993-01-11 | 1996-11-26 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, one component-type developer and two-component type developer |
US6153879A (en) * | 1993-01-19 | 2000-11-28 | Canon Kabushiki Kaisha | Invisible information detecting apparatus |
US5503904A (en) * | 1993-01-19 | 1996-04-02 | Canon Kabushiki Kaisha | Invisible information recorded medium |
US5489498A (en) * | 1993-01-20 | 1996-02-06 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and method of manufacturing resin composition |
US5854365A (en) * | 1993-01-20 | 1998-12-29 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and method of manufacturing resin composition |
US5535185A (en) * | 1993-01-21 | 1996-07-09 | Canon Kabushiki Kaisha | Information recording/reproduction apparatus using probe |
US5517286A (en) * | 1993-01-28 | 1996-05-14 | Canon Kabushiki Kaisha | Developing apparatus |
US5634181A (en) * | 1993-02-16 | 1997-05-27 | Fuji Xerox Co., Ltd. | Developing apparatus |
US5846682A (en) * | 1993-03-02 | 1998-12-08 | Showa Denko K.K. | Light decolorizable recording material, ink and toner |
US5536612A (en) * | 1993-03-10 | 1996-07-16 | Kao Corporation | Encapsulated toner for heat-and-pressure fixing and method for production thereof |
US5604074A (en) * | 1993-03-15 | 1997-02-18 | Kao Corporation | Method of development of nonmagnetic one-component toner and method for forming fixed images using the development |
US5565291A (en) * | 1993-03-25 | 1996-10-15 | Canon Kabushiki Kaisha | Carrier for use in electrophotography and two component-type developer containing the carrier |
US5508139A (en) * | 1993-03-25 | 1996-04-16 | Canon Kabushiki Kaisha | Magnetic toner for developing electrostatic image |
US5318872A (en) * | 1993-04-02 | 1994-06-07 | Xerox Corporation | Toner and developer compositions with fluorophosphate charge enhancing additives |
US5483327A (en) * | 1993-04-20 | 1996-01-09 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, forming apparatus and process cartridge |
US5439770A (en) * | 1993-04-20 | 1995-08-08 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, image forming apparatus and process cartridge |
US5529873A (en) * | 1993-04-20 | 1996-06-25 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and process for producing toner |
US5789132A (en) * | 1993-04-28 | 1998-08-04 | Canon Kabushiki Kaisha | Toner for developing electrostatic images containing fine powder fluidity improver and, one-component developer, and two-component developer, containing this toner |
US5470687A (en) * | 1993-04-28 | 1995-11-28 | Canon Kabushiki Kaisha | Process for producing toner particles using free space formed in a polymeric medium |
US5670288A (en) * | 1993-05-20 | 1997-09-23 | Canon Kabushiki Kaisha | Carrier for electrophotography, two-component type developer, and image forming method |
US5512402A (en) * | 1993-05-20 | 1996-04-30 | Canon Kabushiki Kaisha | Carrier for electrophotography, two-component type developer, and image forming method |
US5510222A (en) * | 1993-05-20 | 1996-04-23 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and process for production thereof |
US5523533A (en) * | 1993-05-28 | 1996-06-04 | Canon Kabushiki Kaisha | Developing device which restricts carrier using developing agent regulating rotary member |
US5437949A (en) * | 1993-06-28 | 1995-08-01 | Canon Kabushiki Kaisha | Color toner and process for its production |
US5571652A (en) * | 1993-09-01 | 1996-11-05 | Kao Corporation | Encapsulated toner for heat-and-pressure fixing and method for producing the same |
US6288166B1 (en) | 1993-09-03 | 2001-09-11 | Kao Corporation | Binder resin for toner and positively chargeable toner containing the same |
US5663026A (en) * | 1993-10-08 | 1997-09-02 | Canon Kabushiki Kaisha | Magnetic toner, process cartridge and image forming method |
US5512406A (en) * | 1993-10-14 | 1996-04-30 | Canon Kabushiki Kaisha | Toners of different size for electrophotography |
US5885742A (en) * | 1993-10-15 | 1999-03-23 | Canon Kabushiki Kaisha | Carrier for electrophotography, two-component type developer, and image forming method |
US5571653A (en) * | 1993-10-20 | 1996-11-05 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, and process for its production |
US5578407A (en) * | 1993-10-29 | 1996-11-26 | Canon Kabushiki Kaisha | Color toner for developing electrostatic images, process for its production, and color image forming method |
US5567567A (en) * | 1993-11-05 | 1996-10-22 | Kao Corporation | Method for producing encapsulated toner for heat-and-pressure fixing and encapsulated toner obtained thereby |
USRE38026E1 (en) | 1993-11-29 | 2003-03-11 | Canon Kabushiki Kaisha | Developing device having regulating rotary member for regulating toner amount |
US6187496B1 (en) | 1993-11-30 | 2001-02-13 | Canon Kabushiki Kaisha | Toner and developer for developing electrostatic image, process for production thereof and image forming method |
US6077638A (en) * | 1993-11-30 | 2000-06-20 | Canon Kabushiki Kaisha | Toner and developer for developing electrostatic image, process for production thereof and image forming method |
EP0658819A2 (en) | 1993-11-30 | 1995-06-21 | Canon Kabushiki Kaisha | Toner and developer for developing electrostatic image, process for production thereof and image forming method |
US6541174B1 (en) | 1993-11-30 | 2003-04-01 | Canon Kabushiki Kaisha | Method using toner and developer for developing electrostatic image |
US5962176A (en) * | 1993-12-24 | 1999-10-05 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, image forming method and process-cartridge |
US5578408A (en) * | 1993-12-29 | 1996-11-26 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US6783910B2 (en) | 1993-12-29 | 2004-08-31 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5573880A (en) * | 1993-12-29 | 1996-11-12 | Canon Kabushiki Kaisha | Carrier for electrophotography, process for its production, two-component type developer, and image forming method |
US6623901B1 (en) | 1993-12-29 | 2003-09-23 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US6537716B1 (en) | 1993-12-29 | 2003-03-25 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and heat fixing method |
US5591555A (en) * | 1994-01-11 | 1997-01-07 | Fuji Electric Co., Ltd. | Electrophotographic photoconductor including a metal-free phthalocyanine |
US5824800A (en) * | 1994-01-11 | 1998-10-20 | Fuji Electric Co., Ltd. | Process for preparing a metal-free phthalocyanine |
US5585483A (en) * | 1994-01-11 | 1996-12-17 | Fuji Electric., Ltd. | Metal-free phythalocyanine, process for preparing the same, and electrophotographic photoconductor using the same |
US5635326A (en) * | 1994-02-10 | 1997-06-03 | Canon Kabushiki Kaisha | Electrostatic image-developing toner, fine powdery titanium oxide, and hydrophobic fine powdery titanium oxide |
US5565293A (en) * | 1994-03-09 | 1996-10-15 | Kao Corporation | Encapsulated toner for heat-and-pressure fixing |
US6002895A (en) * | 1994-05-13 | 1999-12-14 | Canon Kabushiki Kaisha | Process cartridge |
EP0686882A1 (en) | 1994-05-13 | 1995-12-13 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, process cartridge, and image forming method |
US6090515A (en) * | 1994-05-13 | 2000-07-18 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, image forming method and process cartridge |
US6365314B1 (en) | 1994-05-13 | 2002-04-02 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, image forming method and process cartridge |
US5736288A (en) * | 1994-05-13 | 1998-04-07 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, process cartridge, and image forming method |
EP0683436A1 (en) | 1994-05-17 | 1995-11-22 | Minnesota Mining And Manufacturing Company | Liquid toners utilizing highly fluorinated solvents |
US5530053A (en) * | 1994-05-17 | 1996-06-25 | Minnesota Mining And Manufacturing Company | Liquid toners utilizing highly fluorinated solvents |
US5530067A (en) * | 1994-05-17 | 1996-06-25 | Minnesota Mining And Manufacturing Company | Liquid toners utilizing highly fluorinated solvents |
US5741617A (en) * | 1994-06-02 | 1998-04-21 | Canon Kabushiki Kaisha | Toner for developing electrostatic images |
EP0686885A1 (en) | 1994-06-02 | 1995-12-13 | Canon Kabushiki Kaisha | Toner for developing electrostatic images |
EP0687960A1 (en) | 1994-06-14 | 1995-12-20 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and image forming method |
US5614344A (en) * | 1994-06-14 | 1997-03-25 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and image forming method |
EP0692749A2 (en) | 1994-07-13 | 1996-01-17 | Hitachi, Ltd. | Electrophotographic copying apparatus |
US5607805A (en) * | 1994-07-18 | 1997-03-04 | Kao Corporation | Toner for electrophotography and developer composition containing the same |
US5641600A (en) * | 1994-08-05 | 1997-06-24 | Canon Kabushiki Kaisha | Magnetic toner and image forming method |
EP0699963A1 (en) | 1994-08-05 | 1996-03-06 | Canon Kabushiki Kaisha | Magnetic toner and image forming method |
US5592266A (en) * | 1994-09-08 | 1997-01-07 | Samsung Electronics Co., Ltd. | Electrophotographic process cartridge |
US5986017A (en) * | 1994-09-19 | 1999-11-16 | Fujitsu Limited | Toner binder for flash fixing, toner, electrostatic photographic printing method and apparatus therefor |
US5618648A (en) * | 1994-09-19 | 1997-04-08 | Fujitsu Limited | Toner binder, toner, electrophotographic method and apparatus therefor |
EP0707239A1 (en) | 1994-09-21 | 1996-04-17 | Canon Kabushiki Kaisha | Toner for developing electronstatic images, image forming method and process cartridge |
US5604072A (en) * | 1994-09-21 | 1997-02-18 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, image forming method and process cartridge |
US5599886A (en) * | 1994-09-29 | 1997-02-04 | Minnesota Mining And Manufacturing Company | Liquid toners with hydrocarbon solvents |
US5521271A (en) * | 1994-09-29 | 1996-05-28 | Minnesota Mining And Manufacturing Company | Liquid toners with hydrocarbon solvents |
US5663024A (en) * | 1994-09-29 | 1997-09-02 | Minnesota Mining And Manufacturing Company | Liquid toners with hydrocarbon solvents |
US5712069A (en) * | 1994-10-05 | 1998-01-27 | Canon Kabushiki Kaisha | Two-component type developer, developing method and image forming method |
EP0708378A2 (en) | 1994-10-05 | 1996-04-24 | Canon Kabushiki Kaisha | Two-component type developer, developing method and image forming method |
US6159648A (en) * | 1994-10-05 | 2000-12-12 | Canon Kabushiki Kaisha | Two-component type developer, developing method and image forming method |
EP0708376A2 (en) | 1994-10-05 | 1996-04-24 | Canon Kabushiki Kaisha | Two-component type developer, developing method and image forming method |
US6010811A (en) * | 1994-10-05 | 2000-01-04 | Canon Kabushiki Kaisha | Two-component type developer, developing method and image forming method |
US5824442A (en) * | 1994-11-08 | 1998-10-20 | Canon Kabushiki Kaisha | Developing method, image forming method, and heat fixing method, with toner |
EP0713153A2 (en) | 1994-11-08 | 1996-05-22 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, two component type developer, developing method, image forming method, heat fixing method, and process for producing toner |
US5707770A (en) * | 1994-11-08 | 1998-01-13 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, two component type developer, developing method, image forming method, heat fixing method, and process for producing toner |
US6342273B1 (en) | 1994-11-16 | 2002-01-29 | Dsm N.V. | Process for coating a substrate with a powder paint composition |
EP0715216A1 (en) | 1994-11-24 | 1996-06-05 | Fuji Electric Co., Ltd. | Titanyloxyphthalocyanine crystals, methods for preparing the same, and electrophotographic photoreceptors using such crystals |
US5736282A (en) * | 1994-11-24 | 1998-04-07 | Fuji Electric Co., Ltd. | Electrophotographic photoreceptors including titanyloxyphthalocyanine crystals |
EP0716351A2 (en) | 1994-11-28 | 1996-06-12 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5660963A (en) * | 1994-11-28 | 1997-08-26 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5827632A (en) * | 1994-12-05 | 1998-10-27 | Canon Kabushiki Kaisha | Toner for developing electrostatic image containing hydrophobized inorganic fine powder |
US6016414A (en) * | 1994-12-07 | 2000-01-18 | Canon Kabushiki Kaisha | Electrophotographic photosensitive member, electrophotographic apparatus and process cartridge |
US5707771A (en) * | 1994-12-21 | 1998-01-13 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
EP0718703A2 (en) | 1994-12-21 | 1996-06-26 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5700616A (en) * | 1995-02-01 | 1997-12-23 | Canon Kabushiki Kaisha | Developer for developing an electrostatic image and image forming method |
US5604070A (en) * | 1995-02-17 | 1997-02-18 | Minnesota Mining And Manufacturing Company | Liquid toners with hydrocarbon solvents |
US5919866A (en) * | 1995-02-17 | 1999-07-06 | Minnesota Mining And Manufacturing Company | Liquid toners with hydrocarbon solvents |
US5753763A (en) * | 1995-02-17 | 1998-05-19 | Minnesota Mining And Manufacturing Company | Process for preparing liquid toners with hydrocarbon solvents |
US5712072A (en) * | 1995-02-28 | 1998-01-27 | Canon Kabusbiki Kaisha | Toner for developing electrostatic image |
US5750304A (en) * | 1995-04-28 | 1998-05-12 | Kao Corporation | Encapsulated toner for heat-and-pressure fixing and method for producing the same |
US5747209A (en) * | 1995-05-02 | 1998-05-05 | Canon Kabushiki Kaisha | Toner for developing electrostatic images containing aromatic hydroxycarboxylic acid and metal compound of the aromatic hydroxycarboxylic acid |
US5753399A (en) * | 1995-05-15 | 1998-05-19 | Canon Kabushiki Kaisha | Toner for developing electrostatic image containing crosslined styrene copolymer and a new-crosslinked or crosslinked polyester resin |
US6002903A (en) * | 1995-05-15 | 1999-12-14 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, apparatus unit and image forming method |
US5863697A (en) * | 1995-05-19 | 1999-01-26 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and process for production thereof |
US5795694A (en) * | 1995-05-19 | 1998-08-18 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5750303A (en) * | 1995-05-22 | 1998-05-12 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5747213A (en) * | 1995-05-31 | 1998-05-05 | Canon Kabushiki Kaisha | Image forming method and heat fixing method using a toner including a wax |
US5679490A (en) * | 1995-05-31 | 1997-10-21 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, and process for producing the same |
US5773185A (en) * | 1995-05-31 | 1998-06-30 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, and process for producing the same |
US5840459A (en) * | 1995-06-15 | 1998-11-24 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and process for production thereof |
US5802440A (en) * | 1995-06-30 | 1998-09-01 | Canon Kabushiki Kaisha | Cleaning apparatus for cleaning heat fixing member, heat fixing method and image forming method |
US5665513A (en) * | 1995-08-30 | 1997-09-09 | Canon Kabushiki Kaisha | Toner for developing electrostatic charged image |
US5858597A (en) * | 1995-09-04 | 1999-01-12 | Canon Kabushiki Kaisha | Toner for developing electrostatic image containing specified double oxide particles |
US6017669A (en) * | 1995-09-20 | 2000-01-25 | Canon Kabushiki Kaisha | Toner for developing an electrostatic image |
US5700617A (en) * | 1995-10-12 | 1997-12-23 | Canon Kabushiki Kaisha | Toner for developing electrostatic images and charge-controlling agent |
US5972553A (en) * | 1995-10-30 | 1999-10-26 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, process-cartridge and image forming method |
EP0772093A1 (en) | 1995-10-30 | 1997-05-07 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, process-cartridge and image forming method |
US5874570A (en) * | 1995-11-10 | 1999-02-23 | Fuji Electric Co., Ltd. | Titanyloxyphthalocyanine crystals, and method of preparing the same |
EP0774696A2 (en) | 1995-11-20 | 1997-05-21 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, image forming method and process-cartridge |
US5773183A (en) * | 1995-11-20 | 1998-06-30 | Canon Kabushiki Kaisha | Toner for developing electrostatic images |
EP0774695A1 (en) | 1995-11-20 | 1997-05-21 | Canon Kabushiki Kaisha | Toner for developing electrostatic images |
EP0784237A2 (en) | 1996-01-10 | 1997-07-16 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, apparatus unit and image forming method |
US5712073A (en) * | 1996-01-10 | 1998-01-27 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, apparatus unit and image forming method |
US5750302A (en) * | 1996-03-22 | 1998-05-12 | Canon Kabushiki Kaisha | Magnetic toner for developing electrostatic image, image forming process, and process cartridge |
US5716751A (en) * | 1996-04-01 | 1998-02-10 | Xerox Corporation | Toner particle comminution and surface treatment processes |
US5851714A (en) * | 1996-04-02 | 1998-12-22 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and fixing method |
US5744278A (en) * | 1996-04-09 | 1998-04-28 | Canon Kabushiki Kaisha | Toner for developing an electrostatic image and process for producing a toner |
US5935751A (en) * | 1996-06-27 | 1999-08-10 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic latent image, process for manufacturing the same, developer for electrostatic latent image, and image-forming method |
US6040103A (en) * | 1996-09-02 | 2000-03-21 | Canon Kabushiki Kaisha | Toner for developing electrostatic image and image forming method |
US5955234A (en) * | 1996-10-09 | 1999-09-21 | Canon Kabushiki Kaisha | Toner for developing electrostatic image, and image forming method |
US6381434B1 (en) | 1996-11-14 | 2002-04-30 | Canon Kabushiki Kaisha | Developing apparatus with electric field force directing a toner cloud for coating a developer carrying member |
US6001525A (en) * | 1996-11-19 | 1999-12-14 | Canon Kabushiki Kaisha | Electrophotographic developer carrier, two-component type developer and image forming method |
US5922500A (en) * | 1996-11-19 | 1999-07-13 | Canon Kabushiki Kaisha | Toner for developing electrostatic image |
US5985502A (en) * | 1996-12-20 | 1999-11-16 | Canon Kabushiki Kaisha | Toner for developing an electrostatic image and process for producing a toner |
US6447968B1 (en) | 1996-12-26 | 2002-09-10 | Canon Kabushiki Kaisha | Magnetic toner, process for producing magnetic toner, and image forming method |
US6001527A (en) * | 1996-12-26 | 1999-12-14 | Fuji Xerox Co., Ltd. | Electrostatic charge image developer, image formation method and image forming device |
US6120655A (en) * | 1997-01-20 | 2000-09-19 | Fuji Photo Film Co., Ltd. | Process for producing printing plate for platemaking by ink-jet system |
US5916726A (en) * | 1997-02-10 | 1999-06-29 | Canon Kabushiki Kaisha | Process for producing toner for developing electrostatic images |
US6013406A (en) * | 1997-03-11 | 2000-01-11 | Canon Kabushiki Kaisha | Toner for developing electrostatic images, and image-forming method |
US6020102A (en) * | 1997-07-04 | 2000-02-01 | Canon Kabushiki Kaisha | Positive-chargeable toner, image forming method and apparatus unit |
US6436599B1 (en) | 1997-07-28 | 2002-08-20 | Fuji Xerox Co., Ltd. | Toner, method of producing toner, and image forming method using toner |
US5976752A (en) * | 1997-08-21 | 1999-11-02 | Canon Kabushiki Kaisha | Toner and image forming method |
US5998080A (en) * | 1997-08-29 | 1999-12-07 | Canon Kabushiki Kaisha | Electrostatic image-developing toner and image-forming method |
US6610454B2 (en) | 1997-09-05 | 2003-08-26 | Canon Kabushiki Kaisha | Toner and image forming method |
US6225017B1 (en) | 1997-10-31 | 2001-05-01 | Canon Kabushiki Kaisha | Electrophotographic photosensitive member, and process cartridge and electrophotographic apparatus having the electrophotographic photosensitive member |
US6054244A (en) * | 1997-12-26 | 2000-04-25 | Canon Kabushiki Kaisha | Process for producing toner |
US6544706B1 (en) * | 1998-02-06 | 2003-04-08 | Nippon Zeon Co., Ltd. | Polymerized toner and production process thereof |
US6001524A (en) * | 1998-03-19 | 1999-12-14 | Hna Holdings, Inc. | Toner particles for electrophotographic imaging applications |
US6232027B1 (en) | 1998-05-26 | 2001-05-15 | Canon Kabushiki Kaisha | Toner having negative triboelectric chargeability and image forming method |
US6124067A (en) * | 1998-07-22 | 2000-09-26 | Canon Kabushiki Kaisha | Magnetic carrier, two-component developer and image forming method |
US6156470A (en) * | 1998-07-31 | 2000-12-05 | Canon Kabushiki Kaisha | Toner having negative triboelectric chargeability and image forming method |
US6106990A (en) * | 1998-07-31 | 2000-08-22 | Canon Kabushiki Kaisha | Process for producing toner particles |
US6219522B1 (en) | 1998-09-17 | 2001-04-17 | Canon Kabushiki Kaisha | Fuser and image forming apparatus |
US6124070A (en) * | 1998-09-25 | 2000-09-26 | Canon Kabushiki Kaisha | Toner and process for producing toner |
US6146801A (en) * | 1998-09-30 | 2000-11-14 | Canon Kabushiki Kaisha | Resin-coated carrier, two component type developer, and developing method |
US6312862B1 (en) | 1998-11-06 | 2001-11-06 | Canon Kabushiki Kaisha | Two-component type developer and image forming method |
US6309788B1 (en) | 1998-11-06 | 2001-10-30 | Canon Kabushiki Kaisha | Process for producing toner |
US6235441B1 (en) | 1998-12-17 | 2001-05-22 | Canon Kabushiki Kaisha | Positively chargeable toner, image forming method and image forming apparatus |
US6156471A (en) * | 1999-01-21 | 2000-12-05 | Canon Kabushiki Kaisha | Toner and image forming method |
US6203959B1 (en) | 1999-03-09 | 2001-03-20 | Canon Kabushiki Kaisha | Toner |
US6326114B1 (en) | 1999-04-14 | 2001-12-04 | Canon Kabushiki Kaisha | Toner, and process for producing a toner |
US6389970B1 (en) * | 1999-05-31 | 2002-05-21 | Fuji Photo Film Co., Ltd. | Direct drawing type lithographic printing plate precursor and method for producing lithographic printing plate using the same |
US6447970B1 (en) | 1999-06-07 | 2002-09-10 | Canon Kabushiki Kaisha | Toner containing aluminum benzilic acid compound and image forming method |
US6372400B1 (en) | 1999-06-30 | 2002-04-16 | Canon Kabushiki Kaisha | Carrier for use in electrophotography, two-component type developer and image forming method |
US6300024B1 (en) | 1999-06-30 | 2001-10-09 | Canon Kabushiki Kaisha | Toner, two-component type developer, heat fixing method, image forming method and apparatus unit |
US20040137358A1 (en) * | 1999-08-02 | 2004-07-15 | Keita Nozawa | Toner, process for producing a toner, image forming method and image forming apparatus |
US7097952B2 (en) | 1999-08-02 | 2006-08-29 | Canon Kabushiki Kaisha | Toner, process for producing a toner, image forming method and image forming apparatus |
US20060105259A1 (en) * | 1999-08-02 | 2006-05-18 | Canon Kabushiki Kaisha | Toner, process for producing a toner, image forming method and image forming apparatus |
US20050208406A1 (en) * | 1999-08-02 | 2005-09-22 | Canon Kabushiki Kaisha | Toner, process for producing a toner, image forming method and image forming apparatus |
US6555281B1 (en) | 1999-08-02 | 2003-04-29 | Canon Kabushiki Kaisha | Toner, process for producing a toner, image forming method and image forming apparatus |
US6972166B2 (en) | 1999-08-02 | 2005-12-06 | Canon Kabushiki Kaisha | Toner, process for producing a toner, image forming method and image forming apparatus |
US6706458B2 (en) | 1999-08-02 | 2004-03-16 | Canon Kabushiki Kaisha | Toner, process for producing a toner, image forming method and image forming apparatus |
US6410195B1 (en) | 1999-08-12 | 2002-06-25 | Canon Kabushiki Kaisha | Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus |
US6397031B1 (en) | 1999-08-30 | 2002-05-28 | Canon Kabushiki Kaisha | Development apparatus with first and second developer carrying member and a plurality of magnetic field generating means for regulating developer layer thickness |
US6703176B2 (en) * | 1999-10-06 | 2004-03-09 | Canon Kabushiki Kaisha | Toner, process for producing toner image forming method and apparatus unit |
US6586151B1 (en) | 1999-10-06 | 2003-07-01 | Canon Kabushiki Kaisha | Toner, process for producing toner image forming method and apparatus unit |
US6379482B1 (en) * | 1999-10-22 | 2002-04-30 | Fujitsu Limited | Manufacturing device and method of the exposure device |
US6635398B1 (en) | 1999-10-26 | 2003-10-21 | Canon Kabushiki Kaisha | Dry toner, dry toner production process, and image forming method |
US6485875B1 (en) | 1999-10-26 | 2002-11-26 | Canon Kabushiki Kaisha | Toner and resin composition for the toner |
US6426169B1 (en) | 1999-10-29 | 2002-07-30 | Canon Kabushiki Kaisha | Toner containing azo iron compound |
US6387583B1 (en) | 1999-12-09 | 2002-05-14 | Matsci Solutions, Inc. | Method of producing toner for developing latent electrostatic images by way of dispersion dyeing |
US6797446B2 (en) | 1999-12-31 | 2004-09-28 | Samsung Electronics Co., Ltd. | Electrophotographic photoreceptors |
US20040076898A1 (en) * | 1999-12-31 | 2004-04-22 | Cheil Industries Inc. | Electrophotographic photoreceptors |
US6858364B2 (en) | 1999-12-31 | 2005-02-22 | Daewon Scn. Co., Ltd. | Electrophotographic photoreceptors |
US6294303B1 (en) | 2000-01-24 | 2001-09-25 | Nexpress Solutions Llc | Monocomponent developer containing positively chargeable fine power |
US6696211B2 (en) * | 2000-02-21 | 2004-02-24 | Canon Kabushiki Kaisha | Developer, image-forming method, and process cartridge |
US20040038141A1 (en) * | 2000-02-21 | 2004-02-26 | Satoshi Yoshida | Developer, image forming method, and process cartridge |
US6424814B2 (en) | 2000-02-25 | 2002-07-23 | Canon Kabushiki Kaisha | Image forming apparatus using shaped toner particles and transfer roller pressure for fine image quality |
US6403274B2 (en) | 2000-04-21 | 2002-06-11 | Fuji Xerox Co., Ltd. | Electrophotographic toner, process for preparing the same, and two-component developer |
US6287742B1 (en) | 2000-05-16 | 2001-09-11 | Matsci Solutions, Inc. | Toner compositions and method of producing toner for developing latent electrostatic images |
US6627374B2 (en) | 2000-05-31 | 2003-09-30 | Canon Kabushiki Kaisha | Process and system for producing toner particles |
US6458499B1 (en) | 2000-06-02 | 2002-10-01 | Canon Kabushiki Kaisha | Toner having hydrocarbon wax with specific ester value and hydroxyl value |
US6493522B2 (en) | 2000-06-09 | 2002-12-10 | Canon Kabushiki Kaisha | Developing device and image forming apparatus |
US6544707B2 (en) | 2000-07-07 | 2003-04-08 | Fujitsu Limited | Two component developing agent and an image forming apparatus by use of the same |
US20040224247A1 (en) * | 2000-07-17 | 2004-11-11 | Fumihiro Sasaki | Electrographic image formation method |
US7029816B2 (en) | 2000-07-17 | 2006-04-18 | Ricoh Company, Ltd. | Electrographic image formation method |
US6537715B2 (en) | 2000-07-28 | 2003-03-25 | Canon Kabushiki Kaisha | Toner, image-forming method and process cartridge |
US6475686B2 (en) | 2000-07-28 | 2002-11-05 | Canon Kabushiki Kaisha | Fixing method |
US6569589B2 (en) | 2000-07-28 | 2003-05-27 | Canon Kabushiki Kaisha | Toner, toner production process and image forming method |
US6638674B2 (en) * | 2000-07-28 | 2003-10-28 | Canon Kabushiki Kaisha | Magnetic toner |
US6589701B2 (en) | 2000-07-28 | 2003-07-08 | Canon Kabushiki Kaisha | Dry toner, image forming method and process cartridge |
US6667140B2 (en) | 2000-09-01 | 2003-12-23 | Canon Kabushiki Kaisha | Toner and image forming method |
US6636717B2 (en) | 2000-10-17 | 2003-10-21 | Canon Kabushiki Kaisha | Developing device including first and second developer carrying devices with insufficiently-charged developer control feature |
US6670087B2 (en) | 2000-11-07 | 2003-12-30 | Canon Kabushiki Kaisha | Toner, image-forming apparatus, process cartridge and image forming method |
US6653037B2 (en) | 2000-11-20 | 2003-11-25 | Ricoh Company, Ltd. | Toner for developing latent electrostatic images, and image forming method and device |
EP1209531A1 (en) | 2000-11-28 | 2002-05-29 | Xerox Corporation | Toner compositions comprising vinyl resin and poly (3,4-ethylenedioxythiophene) |
US6500593B2 (en) | 2000-11-29 | 2002-12-31 | Canon Kabushiki Kaisha | Toner, and toner production process |
US6713221B2 (en) | 2001-01-12 | 2004-03-30 | Nof Corporation | Ester wax and toner using the wax |
US6376148B1 (en) | 2001-01-17 | 2002-04-23 | Nanotek Instruments, Inc. | Layer manufacturing using electrostatic imaging and lamination |
US20040013573A1 (en) * | 2001-03-26 | 2004-01-22 | Tai-Nang Huang | Polymer synthesis apparatus |
US6855501B2 (en) | 2001-03-26 | 2005-02-15 | Linden Technologies, Inc. | Transfer of arrayed chemical compositions |
US20020168669A1 (en) * | 2001-03-26 | 2002-11-14 | Tai-Nang Huang | Patterned polymer synthesis |
US6838447B2 (en) | 2001-03-26 | 2005-01-04 | Linden Technologies, Inc. | Particulate compositions for chemical synthesis |
US20020136978A1 (en) * | 2001-03-26 | 2002-09-26 | Tai-Nang Huang | Transfer of arrayed chemical compositions |
US20020136772A1 (en) * | 2001-03-26 | 2002-09-26 | Tai-Nang Huang | Polymer synthesis |
US6696212B2 (en) | 2001-03-27 | 2004-02-24 | Heidelberger Druckmaschinen Ag | Single component toner for improved magnetic image character recognition |
US6780368B2 (en) | 2001-04-10 | 2004-08-24 | Nanotek Instruments, Inc. | Layer manufacturing of a multi-material or multi-color 3-D object using electrostatic imaging and lamination |
US6984479B2 (en) | 2001-04-27 | 2006-01-10 | Fuji Electric Imaging Device Co., Ltd. | Electrophotographic photoconductor and manufacturing method therefore |
US6544705B2 (en) | 2001-05-18 | 2003-04-08 | Dpi Solutions, Inc. | Micro-serrated, dyed color toner particles and method of making same |
US6461783B1 (en) | 2001-05-18 | 2002-10-08 | Dpi Solutions, Inc. | Micro-serrated color toner particles and method of making same |
US6531255B2 (en) | 2001-05-18 | 2003-03-11 | Dpi Solutions, Inc. | Micro-serrated particles for use in color toner and method of making same |
US6808855B2 (en) | 2001-05-24 | 2004-10-26 | Canon Kabushiki Kaisha | Process for producing toner |
US6873816B2 (en) | 2001-08-20 | 2005-03-29 | Canon Kabushiki Kaisha | Developing assembly, process cartridge and image-forming method |
US20030129517A1 (en) * | 2001-09-06 | 2003-07-10 | Yojiro Hotta | Toner and heat-fixing method |
US6808852B2 (en) | 2001-09-06 | 2004-10-26 | Canon Kabushiki Kaisha | Toner and heat-fixing method |
US6703175B2 (en) | 2001-09-27 | 2004-03-09 | Fuji Xerox Co., Ltd. | Color toner containing less conductive particles that have appropriate electrical resistance and can produce clear color images |
US6924073B2 (en) * | 2001-12-28 | 2005-08-02 | Ricoh Company, Ltd. | Toner for developing electrostatic latent image, toner cartridge, developer, developer cartridge, image forming method, and image forming apparatus |
US20030165760A1 (en) * | 2001-12-28 | 2003-09-04 | Hiroto Higuchi | Toner for developing electrostatic latent image, toner cartridge, developer, developer cartridge, image forming method, and image forming apparatus |
US20030162116A1 (en) * | 2002-01-15 | 2003-08-28 | Yasushi Katsuta | Toner and image-forming method |
US6855471B2 (en) | 2002-01-15 | 2005-02-15 | Canon Kabushiki Kaisha | Toner and image-forming method |
US20030180641A1 (en) * | 2002-02-14 | 2003-09-25 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic latent image, process for producing the same, developer for developing electrostatic latent image, and process for producing image |
US20060051691A1 (en) * | 2002-02-14 | 2006-03-09 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic latent image, process for producing the same, developer for developing electrostatic latent image, and process for forming image |
US20030165764A1 (en) * | 2002-02-22 | 2003-09-04 | Yoshihito Suwa | Toner for electrophotography |
US7122285B2 (en) * | 2002-03-07 | 2006-10-17 | Konica Corporation | Toner for developing static latent image, method for producing toner for developing static latent image |
US20030186150A1 (en) * | 2002-03-07 | 2003-10-02 | Konica Corporation | Toner for developing static latent image, method for producing toner for developing static latent image |
US6765077B2 (en) | 2002-03-11 | 2004-07-20 | Canon Kabushiki Kaisha | Negative-chargeability control resin |
US7169522B2 (en) * | 2002-03-12 | 2007-01-30 | Ricoh Company, Ltd. | Toner for developing a latent electrostatic image, developer using the same, full-color toner kit using the same, image-forming apparatus using the same, image-forming process cartridge using the same and image-forming process using the same |
US20030232266A1 (en) * | 2002-03-12 | 2003-12-18 | Hideki Sugiura | Toner for developing a latent electrostatic image, developer using the same, full-color toner kit using the same, image-forming apparatus using the same, image-forming process cartridge using the same and image-forming process using the same |
US20030203304A1 (en) * | 2002-03-29 | 2003-10-30 | Fujitsu Limited | Image forming method |
US7316882B2 (en) | 2002-03-29 | 2008-01-08 | Fuji Xerox Co., Ltd. | Image forming method |
US6852457B2 (en) | 2002-03-29 | 2005-02-08 | Fuji Xerox Co., Ltd. | Image fixing method |
US6819893B2 (en) | 2002-04-24 | 2004-11-16 | Ricoh Company, Ltd. | Image forming apparatus and charging device |
US20030231896A1 (en) * | 2002-04-24 | 2003-12-18 | Nobuo Kikuchi | Image forming apparatus and charging device |
US6953648B2 (en) | 2002-04-24 | 2005-10-11 | Canon Kabushiki Kaisha | Process for producing toner particles |
US20030232269A1 (en) * | 2002-04-24 | 2003-12-18 | Takeshi Tsujino | Process for producing toner particles |
US20030203301A1 (en) * | 2002-04-30 | 2003-10-30 | Zeon Corporation | Toner for developing an electrostatic image |
US7118841B2 (en) * | 2002-04-30 | 2006-10-10 | Zeon Corporation | Toner for developing an electrostatic image |
US7018765B2 (en) * | 2002-05-13 | 2006-03-28 | Konica Corporation | Toner particle having a hardnes of 6.0 to 24.0 mN and a circularity of 0.92 to 0.99 |
US20030215732A1 (en) * | 2002-05-13 | 2003-11-20 | Tsuyoshi Uchida | Toner and image forming method |
US6982139B2 (en) | 2002-05-28 | 2006-01-03 | Fuji Xerox Co., Ltd | Electrophotographic color toner, and electrophotographic color developer, toner cartridge, image forming device and image forming method using the same |
US6671479B2 (en) | 2002-05-28 | 2003-12-30 | Xerox Corporation | Selective depopulation and/or repopulation of a full color image forming device |
US20040259018A1 (en) * | 2002-06-03 | 2004-12-23 | Canon Kabushiki Kaisha | Process for producing toner particles, and toner |
US20040067189A1 (en) * | 2002-07-15 | 2004-04-08 | Hideki Sugiura | External additive for toner for electrophotography, toner for electrophotography, double-component developer for electrophotography, image-forming process using the toner, and image-forming apparatus using the toner |
US7611815B2 (en) * | 2002-07-15 | 2009-11-03 | Ricoh Company, Ltd. | External additive for toner for electrophotography, toner for electrophotography, double-component developer for electrophotography, image-forming process using the toner, and image-forming apparatus using the toner |
US7135261B2 (en) | 2002-08-26 | 2006-11-14 | Fuji Electric Imaging Device Co., Ltd. | Multi-layered organic electrophotographic photoconductor |
US20040126688A1 (en) * | 2002-08-26 | 2004-07-01 | Fuji Electric Imaging Device Co., Ltd. | Multi-layered organic electrophotographic photoconductor |
US7018764B2 (en) * | 2002-09-19 | 2006-03-28 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic images, process for preparing toner for developing electrostatic images, developer for developing electrostatic images and images forming method |
US20040058266A1 (en) * | 2002-09-19 | 2004-03-25 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic images, process for preparing toner for developing electrostatic images, developer for developing electrostatic images and images forming method |
US20050089788A1 (en) * | 2002-09-20 | 2005-04-28 | Fuji Xerox Co., Ltd. | Image forming apparatus |
US7074540B2 (en) * | 2002-09-20 | 2006-07-11 | Fuji Xerox Co., Ltd. | Image forming apparatus |
US7045265B2 (en) | 2002-10-11 | 2006-05-16 | Fuji Xerox Co., Ltd. | Electrophotographic color toner |
US20040087708A1 (en) * | 2002-11-06 | 2004-05-06 | Sharp Kabushiki Kaisha | Master batch and toner for use in electrophotography |
US20060105260A1 (en) * | 2003-01-13 | 2006-05-18 | Won-Sup Lee | Non-magnetic monocomponent positive toner composition having superior transfer efficiency |
US7378206B2 (en) | 2003-01-13 | 2008-05-27 | Lg Chem, Ltd. | Non-magnetic monocomponent positive toner composition having superior transfer efficiency |
EP1441504A2 (en) * | 2003-01-15 | 2004-07-28 | Xerox Corporation | Color balancing system and method using a high quantization resolution halftone array |
US7277196B2 (en) * | 2003-01-15 | 2007-10-02 | Xerox Corporation | Iterative printer control and color balancing system and method using a high quantization resolution halftone array to achieve improved image quality with reduced processing overhead |
US20040136015A1 (en) * | 2003-01-15 | 2004-07-15 | Xerox Corporation | Iterative printer control and color balancing system and method using a high quantization resolution halftone array to achieve improved image quality with reduced processing overhead |
US20040185367A1 (en) * | 2003-03-10 | 2004-09-23 | Fuji Xerox Co., Ltd. | Image forming method |
US7094514B2 (en) * | 2003-03-10 | 2006-08-22 | Fuji Xerox Co., Ltd. | Image forming method |
US20050003291A1 (en) * | 2003-03-19 | 2005-01-06 | Takeshi Takada | Toner for developing electrostatic image, method for manufacturing the toner, developer including the toner, container containing the toner, and color image forming method using the toner |
US20070042284A1 (en) * | 2003-03-19 | 2007-02-22 | Takeshi Takada | Toner for developing electrostatic image, method for manufacturing the toner, developer including the toner, container containing the toner, and color image forming method using the toner |
US20050026066A1 (en) * | 2003-03-19 | 2005-02-03 | Chiaki Tanaka | Toner for image formation, method of producing the toner, toner container, toner cartridge, process cartridge, and image forming apparatus |
US7163775B2 (en) | 2003-03-19 | 2007-01-16 | Ricoh Company Limited | Toner for developing electrostatic image, method for manufacturing the toner, developer including the toner, container containing the toner, and color image forming method using the toner |
US7294442B2 (en) | 2003-03-19 | 2007-11-13 | Ricoh Company. Ltd. | Toner for developing electrostatic image, method for manufacturing the toner, developer including the toner, container containing the toner, and color image forming method using the toner |
US7208256B2 (en) | 2003-03-19 | 2007-04-24 | Ricoh Company, Ltd. | Toner for image formation, method of producing the toner, toner container, toner cartridge, process cartridge, and image forming apparatus |
US20040191662A1 (en) * | 2003-03-24 | 2004-09-30 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic images containing specified binder resin, process for preparing the same,developer for developing electrostatic images, and image forming method |
US7147981B2 (en) | 2003-03-27 | 2006-12-12 | Canon Kabushiki Kaisha | Toner |
US20040259012A1 (en) * | 2003-03-27 | 2004-12-23 | Hiroyuki Fujikawa | Toner |
US20050142476A1 (en) * | 2003-05-14 | 2005-06-30 | Chul-Hwan Kim | Powder-coated toner particles |
US7208255B2 (en) | 2003-05-14 | 2007-04-24 | Dpi Solutions, Incorporated | Powder-coated toner particles and method of making same |
US20040239978A1 (en) * | 2003-05-29 | 2004-12-02 | Hewlett-Packard Co. | Method and apparatus for tracking a plurality of image devices in a network |
US20050000822A1 (en) * | 2003-06-16 | 2005-01-06 | Udo Drager | Method for preparing a carrier for a photoconductor for the formation of an electrophotographic recording element and a recording element formed accordingly |
US7247228B2 (en) | 2003-06-16 | 2007-07-24 | Eastman Kodak Company | Method for preparing a carrier for a photoconductor for the formation of an electrophotographic recording element and a recording element formed accordingly |
US20050008963A1 (en) * | 2003-07-11 | 2005-01-13 | Fuji Xerox Co., Ltd. | Toner for electrophotography, image-forming method, image-forming apparatus and toner cartridge |
US7166401B2 (en) | 2003-07-11 | 2007-01-23 | Fuji Xerox Co., Ltd. | Toner for electrophotography, image-forming method, image-forming apparatus and toner cartridge |
US20050026061A1 (en) * | 2003-07-30 | 2005-02-03 | Yushi Mikuriya | Toner |
US7029813B2 (en) | 2003-07-30 | 2006-04-18 | Canon Kabushiki Kaisha | Toner |
US20050087289A1 (en) * | 2003-09-04 | 2005-04-28 | Seiko Epson Corporation | Method for forming film, method for forming wiring pattern, method for manufacturing semiconductor device, electro-optical device, and electronic device |
US7217334B2 (en) * | 2003-09-04 | 2007-05-15 | Seiko Epson Corporation | Method for forming film, method for forming wiring pattern, method for manufacturing semiconductor device, electro-optical device, and electronic device |
US20050122041A1 (en) * | 2003-10-22 | 2005-06-09 | Canon Kabushiki Kaisha | Organic electroluminescent device |
US20050100813A1 (en) * | 2003-11-11 | 2005-05-12 | Hiroshi Yamazaki | Image forming method |
US7410742B2 (en) * | 2003-11-11 | 2008-08-12 | Konica Minolta Business Technologies, Inc. | Image forming method |
US7396895B2 (en) | 2003-11-25 | 2008-07-08 | Xerox Corporation | Branched polyarylene ethers and processes for the preparation thereof |
US20050154178A1 (en) * | 2003-11-25 | 2005-07-14 | Xerox Corporation | Process for preparing branched polyarylene ethers |
US7067608B2 (en) | 2003-11-25 | 2006-06-27 | Xerox Corporation | Process for preparing branched polyarylene ethers |
US20050208416A1 (en) * | 2003-11-25 | 2005-09-22 | Xerox Corporation | Branched polyarylene ethers and processes for the preparation thereof |
US7386256B2 (en) * | 2003-12-09 | 2008-06-10 | Ricoh Company, Ltd. | Toner, developer, toner container and latent electrostatic image carrier, and process cartridge, image forming method, and image forming apparatus using the same |
US7482104B2 (en) | 2003-12-09 | 2009-01-27 | Ricoh Company, Ltd. | Toner, developer, toner container and latent electrostatic image carrier, and process cartridge, image forming method, and image forming apparatus using the same |
US20050158644A1 (en) * | 2003-12-09 | 2005-07-21 | Maiko Kondo | Toner, developer, toner container and latent electrostatic image carrier, and process cartridge, image forming method, and image forming apparatus using the same |
US20080193865A1 (en) * | 2003-12-09 | 2008-08-14 | Maiko Kondo | Toner, developer, toner container and latent electrostatic image carrier, and process cartridge, image forming method, and image forming apparatus using the same |
US7588874B2 (en) | 2004-02-10 | 2009-09-15 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic image used in electrophotography and process for producing the same |
US20050175918A1 (en) * | 2004-02-10 | 2005-08-11 | Fuji Xerox Co., Ltd. | Toner for developing electrostatic image used in electrophotography and process for producing the same |
US7704654B2 (en) | 2004-02-12 | 2010-04-27 | Konica Minolta Business Technologies, Inc. | Image forming method |
US20050181289A1 (en) * | 2004-02-12 | 2005-08-18 | Konica Minolta Business Technologies, Inc. | Image forming method |
US8182598B2 (en) * | 2004-03-03 | 2012-05-22 | Clariant Produkte (Deutschland) Gmbh | Violet colorant for colour filters, inks for ink-jet electrophotographic toners and developers and e-inks |
US20070186804A1 (en) * | 2004-03-03 | 2007-08-16 | Heino Heckmann | Violet colorant for colour filters, inks for ink-jet electrophotographic toners and developers and e-inks |
US8015724B2 (en) * | 2004-04-23 | 2011-09-13 | Panasonic Electric Works Co., Ltd. | Heating blower with electrostatic atomizing device |
US20050282078A1 (en) * | 2004-06-18 | 2005-12-22 | Sharp Kabushiki Kaisha | Two-component developer and two-component developing apparatus using the same |
US7687216B2 (en) | 2004-06-18 | 2010-03-30 | Sharp Kabushiki Kaisha | Two-component developer and two-component developing apparatus using the same |
US20060063089A1 (en) * | 2004-09-17 | 2006-03-23 | Chiaki Tanaka | Toner and developer, toner container, process cartridge, image-forming apparatus, and image-forming method using the same |
US20060099529A1 (en) * | 2004-09-17 | 2006-05-11 | Chiaki Tanaka | Toner and method for producing the same, and image-forming method using the same |
US7459255B2 (en) | 2004-09-17 | 2008-12-02 | Ricoh Company, Ltd. | Toner and developer, toner container, process cartridge, image-forming apparatus, and image-forming method using the same |
US7537875B2 (en) | 2004-09-22 | 2009-05-26 | Canon Kabushiki Kaisha | Toner |
US20060063082A1 (en) * | 2004-09-22 | 2006-03-23 | Canon Kabushiki Kaisha | Toner |
US7740998B2 (en) | 2004-11-19 | 2010-06-22 | Canon Kabushiki Kaisha | Positively chargeable developer |
US20060160006A1 (en) * | 2004-11-19 | 2006-07-20 | Canon Kabushiki Kaisha | Positively chargeable developer |
US7550245B2 (en) | 2004-12-28 | 2009-06-23 | Ricoh Company, Ltd. | Toner and production method of the same, and image forming method |
EP1677159A2 (en) | 2004-12-28 | 2006-07-05 | Ricoh Company, Ltd. | Toner, method for its production and image forming method |
US20060160009A1 (en) * | 2005-01-18 | 2006-07-20 | Itipon Padunchwit | Color toner and developer compositions and processes for making and using such compositions |
US7399566B2 (en) | 2005-01-18 | 2008-07-15 | Milliken & Company | Color toner and developer compositions and processes for making and using such compositions |
US7371495B2 (en) | 2005-03-15 | 2008-05-13 | Kabushiki Kaisha Toshiba | Toner |
US20060210900A1 (en) * | 2005-03-15 | 2006-09-21 | Kabushiki Kaisha Toshiba | Toner |
US20060257775A1 (en) * | 2005-05-13 | 2006-11-16 | Xerox Corporation | Toner compositions with amino-containing polymers as surface additives |
US7862970B2 (en) | 2005-05-13 | 2011-01-04 | Xerox Corporation | Toner compositions with amino-containing polymers as surface additives |
US20060274375A1 (en) * | 2005-06-02 | 2006-12-07 | Xerox Corporation | Image/document analysis tool and method for multi-station image forming device |
US7471418B2 (en) | 2005-06-02 | 2008-12-30 | Xerox Corporation | Image/document analysis tool and method for multi-station image forming device |
US20070009167A1 (en) * | 2005-07-05 | 2007-01-11 | Dance Christopher R | Contrast enhancement of images |
US7426312B2 (en) * | 2005-07-05 | 2008-09-16 | Xerox Corporation | Contrast enhancement of images |
US20070014584A1 (en) * | 2005-07-13 | 2007-01-18 | Xerox Corporation | Calibration apparatus and method for charging unit of image forming device |
US7403728B2 (en) | 2005-07-13 | 2008-07-22 | Xerox Corporation | Calibration apparatus and method for charging unit of image forming device |
US7897316B2 (en) | 2005-08-01 | 2011-03-01 | Canon Kabushiki Kaisha | Toner having hybrid binder resin with polyester unit and vinyl copolymer unit |
US20070026336A1 (en) * | 2005-08-01 | 2007-02-01 | Canon Kabushiki Kaisha | Toner |
US7420169B2 (en) | 2005-09-27 | 2008-09-02 | Xerox Corporation | Dicorotron wire assembly removal-insertion tool |
US20070069129A1 (en) * | 2005-09-27 | 2007-03-29 | Parks Bruce J | Dicorotron wire assembly removal-insertion tool |
US20070087278A1 (en) * | 2005-10-14 | 2007-04-19 | Mikio Yamazaki | Electrophotographic photoconductor |
US7662529B2 (en) | 2005-10-14 | 2010-02-16 | Fuji Electric Device Technology Co., Ltd. | Electrophotographic photoconductor |
US7572564B2 (en) * | 2005-10-25 | 2009-08-11 | Fuji Xerox Co., Ltd. | Toner for electrostatic image development, electrostatic image developer and image forming method using the same |
US20070092821A1 (en) * | 2005-10-25 | 2007-04-26 | Fuji Xerox Co., Ltd. | Toner for electrostatic image development, electrostatic image developer and image forming method using the same |
US8026030B2 (en) | 2005-11-07 | 2011-09-27 | Canon Kabushiki Kaisha | Toner |
US20070105033A1 (en) * | 2005-11-07 | 2007-05-10 | Canon Kabushiki Kaisha | Toner |
US7723000B2 (en) | 2005-12-27 | 2010-05-25 | Fuji Electric Device Technology Co., Ltd. | Electrophotographic photoconductor |
US20070154827A1 (en) * | 2005-12-27 | 2007-07-05 | Fuji Electric Device Technology Co., Ltd | Electrophotographic photoconductor |
US20070178228A1 (en) * | 2006-01-27 | 2007-08-02 | Shiu Hei M | Method for fabricating a PCB |
US8329812B2 (en) | 2006-03-03 | 2012-12-11 | Dow Global Technologies Llc | Aqueous dispersions for use as toners |
WO2007103271A1 (en) | 2006-03-03 | 2007-09-13 | Dow Global Technologies Inc. | Aqueous dispersions for use as toners |
US9547246B2 (en) | 2006-03-03 | 2017-01-17 | Dow Global Technologies Llc | Aqueous dispersions for use as toners |
US20070243481A1 (en) * | 2006-03-03 | 2007-10-18 | Dow Global Technologies Inc. | Aqueous dispersions for use as toners |
US20100143837A1 (en) * | 2006-03-03 | 2010-06-10 | John Klier | Aqueous dispersions for use as toners |
US8007978B2 (en) | 2006-03-03 | 2011-08-30 | Dow Global Technologies Llc | Aqueous dispersions for use as toners |
US20070292161A1 (en) * | 2006-06-20 | 2007-12-20 | Nobuo Kikuchi | Charging device, process cartridge, and image forming apparatus |
US7693458B2 (en) | 2006-06-20 | 2010-04-06 | Ricoh Company, Ltd. | Charging device, process cartridge, and image forming apparatus |
US20080003512A1 (en) * | 2006-07-03 | 2008-01-03 | Konica Minolta Business Technologies, Inc. | Image forming method |
US20080019719A1 (en) * | 2006-07-18 | 2008-01-24 | Xerox Corporation | Imaging method for universal printers using an image-on-image process |
US7804510B2 (en) | 2006-07-18 | 2010-09-28 | Xerox Corporation | Imaging method for universal printers using an image-on-image process |
US7634222B2 (en) | 2006-08-08 | 2009-12-15 | Xerox Corporation | Oil dispenser for simplex and duplex print engine |
US20080035002A1 (en) * | 2006-08-08 | 2008-02-14 | Xerox Corporation | Oil dispenser for simplex and duplex print engine |
US20080063964A1 (en) * | 2006-09-13 | 2008-03-13 | Masami Tomita | Method for producing toner and resulting toner |
US8252502B2 (en) | 2006-09-13 | 2012-08-28 | Ricoh Company, Ltd. | Method for producing toner and resulting toner |
US7756442B2 (en) | 2006-09-18 | 2010-07-13 | Xerox Corporation | Locking feature for use in cartridge insertion guide applications |
US20080069587A1 (en) * | 2006-09-18 | 2008-03-20 | Xerox Corporation | Locking feature for use in cartridge insertion guide applications |
US8032061B2 (en) * | 2006-12-26 | 2011-10-04 | Samsung Electronics Co., Ltd | Electrophotographic image forming apparatus having transparent toner and white toner |
US20080153017A1 (en) * | 2006-12-26 | 2008-06-26 | Samsung Electronics Co., Ltd | Electrophotographic image forming apparatus having transparent toner and white toner |
EP1959264A1 (en) | 2007-02-16 | 2008-08-20 | Xerox Corporation | Electric field probe |
US7518376B2 (en) | 2007-02-16 | 2009-04-14 | Xerox Corporation | Electric field probe |
US20080197853A1 (en) * | 2007-02-16 | 2008-08-21 | Xerox Corporation | Electric field probe |
US20080268364A1 (en) * | 2007-04-24 | 2008-10-30 | Xerox Corporation | Methods for making customized black toners |
US8232035B2 (en) | 2007-04-24 | 2012-07-31 | Xerox Corporation | Methods for making customized black toners |
US7838192B2 (en) | 2007-04-24 | 2010-11-23 | Xerox Corporation | Methods for making customized black toners |
US20100316945A1 (en) * | 2007-04-24 | 2010-12-16 | Xerox Corporation | Methods for making customized black toners |
US10712686B2 (en) | 2007-10-29 | 2020-07-14 | Toshiba Tec Kabushiki Kaisha | Toner cartridge with memory for image forming apparatus |
US10175606B2 (en) | 2007-10-29 | 2019-01-08 | Toshiba Tec Kabushiki Kaisha | Toner cartridge with memory for image forming apparatus |
US10444662B2 (en) | 2007-10-29 | 2019-10-15 | Toshiba Tec Kabushiki Kaisha | Toner cartridge with memory for image forming apparatus |
US9690230B2 (en) | 2007-10-29 | 2017-06-27 | Toshiba Tec Kabushiki Kaisha | Toner cartridge with memory for image forming apparatus |
US9927736B2 (en) | 2007-10-29 | 2018-03-27 | Toshiba Tec Kabushiki Kaisha | Toner cartridge with memory for image forming apparatus |
US20100248119A1 (en) * | 2007-11-29 | 2010-09-30 | Dow Global Technologies Inc. | Compounds and methods of forming compounds useful as a toner |
US8349531B2 (en) | 2007-11-29 | 2013-01-08 | Dow Global Technologies Llc | Compounds and methods of forming compounds useful as a toner |
US8729285B2 (en) | 2008-03-14 | 2014-05-20 | Konica Minolta Business Technologies, Inc. | Copper complex compound and electrophotographic toner containing the same |
EP2101222A1 (en) | 2008-03-14 | 2009-09-16 | Konica Minolta Business Technologies, INC. | Electrophotographic toner |
US20090233208A1 (en) * | 2008-03-14 | 2009-09-17 | Konica Minolta Business Technologies, Inc. | Copper complex compound and electrophotographic toner containing the same |
US20090233209A1 (en) * | 2008-03-14 | 2009-09-17 | Konica Minolta Business Technologies, Inc. | Electrophotographic toner |
EP2100896A1 (en) | 2008-03-14 | 2009-09-16 | Konica Minolta Business Technologies, INC. | Copper complex compound and electrophotographic toner containing the same |
US8329368B2 (en) | 2008-03-14 | 2012-12-11 | Konica Minolta Business Technologies, Inc. | Electrophotographic toner |
US7943279B2 (en) | 2008-03-14 | 2011-05-17 | Konica Minolta Business Technologies, Inc. | Copper complex compound and electrophotographic toner containing the same |
US20110152556A1 (en) * | 2008-03-14 | 2011-06-23 | Konica Minolta Business Technologies, Inc. | Copper complex compound and electrophotographic toner containing the same |
DE112009000593T5 (en) | 2008-03-17 | 2011-02-10 | Park & Opc Co., Ltd. | Electrostatic image developing toner |
US7923190B2 (en) * | 2008-05-28 | 2011-04-12 | Canon Kabushiki Kaisha | Toner |
US20100028795A1 (en) * | 2008-05-28 | 2010-02-04 | Canon Kabushiki Kaisha | Toner |
US20090311618A1 (en) * | 2008-06-16 | 2009-12-17 | Chang-Soon Lee | Surface-modified non-magnetic mono-component color toner with improvements in background contamination and transfer efficiency and method of preparing the same |
US8951702B2 (en) | 2008-07-18 | 2015-02-10 | Fuji Electric Co., Ltd. | Charge transport material that is an ethylene compound, electrophotographic photoreceptor containing the charge transport material, and process for producing the electrophotographic photoreceptor |
US20110183246A1 (en) * | 2008-07-18 | 2011-07-28 | Fuji Electric Systems Co., Ltd | Novel ethylene compound, charge transport material containing ethylene compound, electrophotographic photoreceptor containing ethylene compound, and process for producing electrophotographic photoreceptor |
US8236472B2 (en) | 2008-12-01 | 2012-08-07 | Konica Minolta Business Technologies, Inc. | Image forming method |
US20100136476A1 (en) * | 2008-12-01 | 2010-06-03 | Konica Minolta Business Technologies, Inc. | Image forming method |
US7943276B2 (en) | 2008-12-11 | 2011-05-17 | Xerox Corporation | Imaging member |
US7811730B2 (en) | 2008-12-11 | 2010-10-12 | Xerox Corporation | Imaging member |
US8057974B2 (en) | 2008-12-11 | 2011-11-15 | Xerox Corporation | Imaging member |
US20100151369A1 (en) * | 2008-12-11 | 2010-06-17 | Xerox Corporation | Imaging member |
US7811729B2 (en) | 2008-12-11 | 2010-10-12 | Xerox Corporation | Imaging member |
US20100151371A1 (en) * | 2008-12-11 | 2010-06-17 | Xerox Corporation | Imaging member |
US20100151368A1 (en) * | 2008-12-11 | 2010-06-17 | Xerox Corporation | Imaging member |
US20100151370A1 (en) * | 2008-12-11 | 2010-06-17 | Xerox Corporation | Imaging member |
US9081319B2 (en) | 2008-12-16 | 2015-07-14 | Fuji Electric Co., Ltd. | Electrophotographic photoconductor, manufacturing method thereof, and electrophotographic device |
US8084177B2 (en) | 2008-12-18 | 2011-12-27 | Xerox Corporation | Toners containing polyhedral oligomeric silsesquioxanes |
US20100159375A1 (en) * | 2008-12-18 | 2010-06-24 | Xerox Corporation | Toners containing polyhedral oligomeric silsesquioxanes |
US7985523B2 (en) | 2008-12-18 | 2011-07-26 | Xerox Corporation | Toners containing polyhedral oligomeric silsesquioxanes |
WO2010151293A1 (en) | 2009-06-24 | 2010-12-29 | Eastman Kodak Company | Extruded image receiver elements |
WO2011019180A2 (en) | 2009-08-11 | 2011-02-17 | 주식회사 파캔오피씨 | Electrostatic image-developing toner |
WO2011028230A1 (en) | 2009-08-27 | 2011-03-10 | Eastman Kodak Company | Image receiver elements |
US8309289B2 (en) | 2009-09-14 | 2012-11-13 | Fuji Xerox Co., Ltd. | Electrostatic charge image developing toner, electrostratic charge image developer, toner cartridge, process cartridge, and image forming apparatus |
EP2296043A1 (en) | 2009-09-14 | 2011-03-16 | Fuji Xerox Co., Ltd. | Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus |
US20110065035A1 (en) * | 2009-09-14 | 2011-03-17 | Fuji Xerox Co., Ltd. | Electrostatic charge image developing toner, electrostratic charge image developer, toner cartridge, process cartridge, and image forming apparatus |
US8835086B2 (en) | 2009-12-02 | 2014-09-16 | Ricoh Company, Ltd. | Electrostatic image developing toner |
US20110151372A1 (en) * | 2009-12-17 | 2011-06-23 | Masaki Watanabe | Toner, image forming method using the toner, and image forming apparatus using the toner |
US20110217651A1 (en) * | 2010-03-08 | 2011-09-08 | Konica Minolta Business Technologies, Inc. | Image formation method and image formation apparatus |
WO2011123426A1 (en) | 2010-03-31 | 2011-10-06 | Eastman Kodak Company | Image receiver elements with overcoat |
EP2399752A2 (en) | 2010-06-25 | 2011-12-28 | Eastman Kodak Company | Thermal receiver elements and imaging assemblies |
US9023570B2 (en) | 2010-10-22 | 2015-05-05 | Ricoh Company, Ltd. | Toner, developer, and image forming apparatus |
US9034550B2 (en) | 2010-11-22 | 2015-05-19 | Ricoh Company, Ltd. | Toner, developer, image forming apparatus, and image forming method |
US20130344427A1 (en) * | 2011-03-09 | 2013-12-26 | Takuya Kadota | Toner, image forming apparatus, and process cartridge |
DE102012205386A1 (en) | 2011-04-06 | 2012-10-11 | Xerox Corporation | Process for producing a toner |
DE102012205386B4 (en) | 2011-04-06 | 2023-10-19 | Xerox Corporation | Process for producing toner particles |
US8822119B2 (en) * | 2011-05-17 | 2014-09-02 | Hubei Dinglong Chemical Co., Ltd. | Bicomponent developing agent |
US20120295189A1 (en) * | 2011-05-17 | 2012-11-22 | Hubei Dinglong Chemical Co., Ltd. | Bicomponent developing agent |
WO2013016149A1 (en) | 2011-07-22 | 2013-01-31 | Cabot Corporation | High resistivity coating compositions having unique percolation behavior, and electrostatic image developing systems and components thereof incorporating same |
US9546286B2 (en) | 2011-07-22 | 2017-01-17 | Cabot Corporation | High resistivity coating compositions having unique percolation behavior, and electrostatic image developing systems and components thereof incorporating same |
US8718522B2 (en) | 2011-09-23 | 2014-05-06 | Stratasys, Inc. | Layer transfusion with part heating for additive manufacturing |
US9423756B2 (en) | 2011-09-23 | 2016-08-23 | Stratasys, Inc. | Electrophotography-based additive manufacturing system with reciprocating operation |
US9141015B2 (en) | 2011-09-23 | 2015-09-22 | Stratasys, Inc. | Electrophotography-based additive manufacturing system with transfer-medium service loops |
US11241824B2 (en) | 2011-09-23 | 2022-02-08 | Evolve Additive Solutions, Inc. | Layer transfusion for heat capacitor belt for additive manufacturing |
US8879957B2 (en) | 2011-09-23 | 2014-11-04 | Stratasys, Inc. | Electrophotography-based additive manufacturing system with reciprocating operation |
US9885987B2 (en) | 2011-09-23 | 2018-02-06 | Stratasys, Inc. | Layer transfusion for additive manufacturing |
US8488994B2 (en) | 2011-09-23 | 2013-07-16 | Stratasys, Inc. | Electrophotography-based additive manufacturing system with transfer-medium service loops |
US9720363B2 (en) | 2011-09-23 | 2017-08-01 | Stratasys, Inc. | Layer transfusion with rotatable belt for additive manufacturing |
US9904223B2 (en) | 2011-09-23 | 2018-02-27 | Stratasys, Inc. | Layer transfusion with transfixing for additive manufacturing |
US10423094B2 (en) | 2012-02-07 | 2019-09-24 | Hp Indigo B.V. | Liquid electrophotography |
US10261437B2 (en) * | 2012-02-07 | 2019-04-16 | Hp Indigo B.V. | Liquid electrophotograpy |
US20150016846A1 (en) * | 2012-02-07 | 2015-01-15 | Hewlett-Packard Indigo Bv | Liquid electrophotograpy |
US10018937B2 (en) | 2013-07-17 | 2018-07-10 | Evolve Additive Solutions, Inc. | Soluble support material for electrophotography-based additive manufacturing |
US9557661B2 (en) | 2013-07-17 | 2017-01-31 | Stratasys, Inc. | Soluble support material for electrophotography-based additive manufacturing |
US9023566B2 (en) | 2013-07-17 | 2015-05-05 | Stratasys, Inc. | ABS part material for electrophotography-based additive manufacturing |
US9029058B2 (en) | 2013-07-17 | 2015-05-12 | Stratasys, Inc. | Soluble support material for electrophotography-based additive manufacturing |
US9144940B2 (en) | 2013-07-17 | 2015-09-29 | Stratasys, Inc. | Method for printing 3D parts and support structures with electrophotography-based additive manufacturing |
US9933718B2 (en) | 2013-07-17 | 2018-04-03 | Stratasys, Inc. | Part material for electrophotography-based additive manufacturing |
US9482974B2 (en) | 2013-07-17 | 2016-11-01 | Stratasys, Inc. | Part material for electrophotography-based additive manufacturing |
US10065371B2 (en) | 2013-07-17 | 2018-09-04 | Evolve Additive Solutions, Inc. | Method for printing 3D parts and support structures with electrophotography-based additive manufacturing |
US9868255B2 (en) | 2014-03-18 | 2018-01-16 | Stratasys, Inc. | Electrophotography-based additive manufacturing with pre-sintering |
US9770869B2 (en) | 2014-03-18 | 2017-09-26 | Stratasys, Inc. | Additive manufacturing with virtual planarization control |
US10011071B2 (en) | 2014-03-18 | 2018-07-03 | Evolve Additive Solutions, Inc. | Additive manufacturing using density feedback control |
US10144175B2 (en) | 2014-03-18 | 2018-12-04 | Evolve Additive Solutions, Inc. | Electrophotography-based additive manufacturing with solvent-assisted planarization |
US9643357B2 (en) | 2014-03-18 | 2017-05-09 | Stratasys, Inc. | Electrophotography-based additive manufacturing with powder density detection and utilization |
US9688027B2 (en) | 2014-04-01 | 2017-06-27 | Stratasys, Inc. | Electrophotography-based additive manufacturing with overlay control |
US9919479B2 (en) | 2014-04-01 | 2018-03-20 | Stratasys, Inc. | Registration and overlay error correction of electrophotographically formed elements in an additive manufacturing system |
US20150370197A1 (en) * | 2014-06-20 | 2015-12-24 | Konica Minolta, Inc. | Wet development device and wet image forming apparatus |
US9829831B2 (en) * | 2014-06-20 | 2017-11-28 | Konica Minolta, Inc. | Wet development device and wet image forming apparatus |
US9678456B1 (en) * | 2015-12-07 | 2017-06-13 | Fuji Xerox Co., Ltd. | Image forming unit and image forming apparatus |
US10324388B2 (en) * | 2016-03-18 | 2019-06-18 | Ricoh Company, Ltd. | Toner, toner stored unit, image forming apparatus, and image forming method |
WO2017192444A1 (en) | 2016-05-03 | 2017-11-09 | Jp Laboratories | A time-temperature indicator based on increased thermal reactivity of a diacetylene upon melt recrystallization |
US20210294229A1 (en) * | 2020-03-17 | 2021-09-23 | Ricoh Company, Ltd. | Image forming apparatus, toner, two-component developing agent, and image forming method |
US20210356877A1 (en) * | 2020-05-18 | 2021-11-18 | Ricoh Company, Ltd. | Toner and production method thereof, toner stored unit, image forming apparatus, and image forming method |
US12181822B2 (en) * | 2022-12-22 | 2024-12-31 | Fujifilm Business Innovation Corp. | Tubular fixing member, fixing device, and image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
FR922351A (en) | 1947-06-06 |
GB672767A (en) | 1952-05-28 |
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