GB813915A - Continuous tone reversal development process - Google Patents

Continuous tone reversal development process

Info

Publication number
GB813915A
GB813915A GB3168/56A GB316856A GB813915A GB 813915 A GB813915 A GB 813915A GB 3168/56 A GB3168/56 A GB 3168/56A GB 316856 A GB316856 A GB 316856A GB 813915 A GB813915 A GB 813915A
Authority
GB
United Kingdom
Prior art keywords
image
powder
conductive surface
development
feb
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3168/56A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Battelle Development Corp
Original Assignee
Battelle Development Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Battelle Development Corp filed Critical Battelle Development Corp
Publication of GB813915A publication Critical patent/GB813915A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/06—Developing
    • G03G13/08—Developing using a solid developer, e.g. powder developer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Photoreceptors In Electrophotography (AREA)

Abstract

813,915. Electrostatic image development. BATTELLE DEVELOPMENT CORPORATION. Feb. 1, 1956 [Feb. 1, 1955], No. 3168/56. Drawings to Specification. Class 98(2) An electrostatic latent image is reversely developed by placing a conductive surface at 1/40-1/200 inch from the image and introducing electroscopic powder into the space between these two, the polarities of the image, conductive surface and powder, all being the same. The powder may be in the form of cloud which is given a charge by blowing it through a tube e.g. of metal, into the space above the image. When the image is formed by charging and exposing a photoconductive layer, the charges on the layer uncovered by the powder may be dissipated after development by uniform exposure to light, and then the image may be further developed by introducing powder of opposite polarity to that initially used, while the conductive surface is disconnected from its source of potential, so that further powder deposits on the original powder image. Specification 698,994 is referred to.
GB3168/56A 1955-02-01 1956-02-01 Continuous tone reversal development process Expired GB813915A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US813915XA 1955-02-01 1955-02-01

Publications (1)

Publication Number Publication Date
GB813915A true GB813915A (en) 1959-05-27

Family

ID=22163846

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3168/56A Expired GB813915A (en) 1955-02-01 1956-02-01 Continuous tone reversal development process

Country Status (2)

Country Link
DE (1) DE1026620B (en)
GB (1) GB813915A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1175991B (en) * 1959-10-15 1964-08-13 Wilhelm Ritzerfeld Device for generating xerographic images
JPS5425830A (en) * 1977-07-29 1979-02-27 Ricoh Co Ltd Image forming method in electrophotographic copiers and others

Also Published As

Publication number Publication date
DE1026620B (en) 1958-03-20

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