JP2684327B2 - Information recording method for photographic film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for recording information on photographic film. In particular, the present invention relates to an information recording method for recording printing conditions on a photographic film capable of recording various information at various times.

[0002]

2. Description of the Related Art Conventionally, in order to improve print image quality, various information such as photographing information (whether or not there is a strobe, color temperature, LV value, photographing, etc.) is used by using optical means, magnetic means or electric means. Distance, focal length of lens, subject contrast, shooting date and time, shooting location, etc.), film information (film type, film manufacturing date, printing conditions, etc.), lab information (lab name, development date, It has been practiced to input the printing conditions such as simultaneous printing) to the photographic film. For this information input method, for example,
JP-A-62-50743 and JP-A-62-209430.
No. 4,864,332 and others.

[0003]

However, the conventional information input method uses only one of optical means, magnetic means and electric means. For this reason, it has been extremely difficult with conventional information input methods to easily and reliably input the various information described above at the time of film production, photographing, development, printing, reprinting, and the like. The present invention has been made in view of this point, and provides an information recording method capable of conveniently recording print conditions in a developing lab or the like in a photographic film in which various information can be input at various times as described above. The purpose is to

[0004]

To achieve this object, in the present invention, a support, a photosensitive layer formed on one surface of the support, and a photosensitive layer formed on the other surface of the support are used. An image exposure portion having a transparent magnetic recording layer and having an area of one frame of 350 mm ² or more and 1200 mm or less is formed on the photosensitive layer, and is located outside the image exposure portion in the width direction of the photographic film. In the region of the photosensitive layer, an optical information recording portion having an area per image exposure portion frame of 15% or more of the area of the image exposure portion frame is formed, and the transparent magnetic recording layer is provided on the back side of the optical information recording portion. A photographic film is used which is formed on the other surface of the support in a region corresponding to the above, and information relating to the production of the photographic film is recorded in a part of the optical information recording portion in the process of producing the film. The present invention uses this photographic film to develop and print the photographic film after image-exposing the image-exposing portion and recording necessary information as printing conditions in the remaining portion of the optical information recording portion. At that time, the printing condition is magnetically recorded in the transparent magnetic recording layer. In order to maintain the print quality, the area of each image exposure unit is 350 mm.
It needs to be ² or more. The area is 12
Becomes a 300 mm ² or more, the area of the portion that can be used in the information recorded as optical means is reduced, the area of the image exposure unit one frame is preferably at 350 mm ² or more 1200 mm ² or less. In consideration of compatibility with the current laboratory system, the preferable width of the photographic film is 35 mm.

In the current photographic film, photographic film manufacturing information is often entered by a bar code on the outside of either the left or right perforations. When trying to input various information in addition to this manufacturing information in a barcode system, inputting one line at a time on both sides of the photographic film requires insufficient input space, and requires at least two lines of input space on one side. . Therefore, the ratio of the area of the optical information recordable portion to the area of one frame of the image exposure portion is 11% of the current one.
To 15% is required. Even when a recording method other than the barcode is adopted, the information density is not much different and the same area ratio is required. On the other hand, since it is desirable that the area of the image exposure portion is large, the preferable upper limit of the ratio of the optical information recordable area to the area of one frame of the image exposure portion is determined in consideration of this point. The upper limit of this ratio is preferably 30%, more preferably 20%.
Alternatively, for example, the perforation of the 35 mm film can be removed or reduced to increase the area of the optical information recordable portion without reducing the area of the image exposure portion.

In this case, it is preferable to provide four to one perforations or notches for positioning the screen instead of the normal perforations. It is particularly preferred to provide one perforation or notch per frame. The distance between the perforations or notches is preferably 20 mm or more and 42 mm or less. In the present specification, the ratio of the area of the optical information recordable portion to the area of one frame of the image exposure portion is defined as follows. As shown in FIG.
If the horizontal length of one frame of the image exposure portion is a, the vertical length is b, and the width of the photographic film is c, the film area A for one frame is A.
Is A = a × c, the area B of the image exposure portion is B = a × b, and the area C of the optical information recordable portion is C = A−B = a × (c−
b). Therefore, the area ratio of the optical information recordable portion is C / A = (AB) / A = (c-b) / c.
In the photographic film used in the present invention, it is preferable that the optical information recordable portion is formed outside the image exposure portion in the width direction of the photographic film. This is because when an optical information recordable portion is formed between the image exposing portion and the image exposing portion,
This is because the total length of the photographic film is increased, which is disadvantageous in making the camera thinner. Moreover, if an optical information recording portion is formed between the perforations, a very complicated camera mechanism is required for inputting information to and reading information from the portion. Therefore, it is not formed between the image exposure portions or between the perforations, but is formed outside the image exposure portions.

The character information is preferably entered in the form of characters or bar codes. It is preferable to input various information at the time of film production or photographing using optical means utilizing the photosensitivity of the photographic film from the viewpoint of simplifying the production process, downsizing the camera, reducing costs, and the like. However, since it is not necessary to develop the film, it is better to input or read the information to confirm the usage status of the film (unused, used, number of shots, etc.) by using magnetic means or electrical means. preferable. In the present invention, various information is input in the laboratory using magnetic means. This method of the present invention is preferable because information can be input even after film development. Generally, it is suitable to input information using an optical means at the time of photographing and using a magnetic means after development. For example, in order to magnetically input information from a camera into a photographic film at the time of shooting, it is necessary to maintain a constant relative speed between the film and a magnetic head, and to electrically store the information in a semiconductor element. For this purpose, a circuit or a contact point with a semiconductor element is required, and for that purpose, the camera must be provided with a complicated mechanism. For this reason, an optical means utilizing the photosensitivity of a photographic film is excellent for inputting information at the time of photographing because of its reliability and simplicity.

On the other hand, once the photographic film has been developed, an optical means utilizing the photosensitivity of the photographic film cannot be used. Therefore, in the present invention, a photosensitive layer is formed on one surface of the support. Then, a photographic film having a magnetic recording layer formed on the other surface of the support is used, and recording of printing conditions is performed on the magnetic recording layer using a magnetic means. That is, the present invention has a support, a photosensitive layer formed on one surface of the support, and a magnetic recording layer formed on the other surface of the support. An image exposure part having an area of 350 mm ² or more and 1200 mm ² or less is formed, and one frame of the image exposure part is formed in a region of the photosensitive layer positioned outside the image exposure part in the width direction of the photographic film. The area is 15 of the area of one image exposure unit.
% Or more, the transparent magnetic recording layer is formed on the other surface of the support in a region corresponding to the back side of the optical information recording portion, and the transparent magnetic recording layer is formed on a part of the optical information recording portion of the film. After using the photographic film on which the information on the production of the photographic film is recorded in the production process, after the image exposure is image-exposed and the necessary information as printing conditions is recorded on the remaining part of the optical information recording part. When developing and printing the photographic film, printing conditions are magnetically recorded in the transparent magnetic recording layer. As a material for forming the above-mentioned transparent magnetic recording layer on the support of a photographic film, US Pat. Nos. 4,302,523 and 3,782,947 are cited.
No. 4,279,945 and the like are preferable for the transparent magnetic base. The advantage of this transparent magnetic base is that information relating to the film screen can be input at a position adjacent to the film screen, and that the optical information recording unit can also be used as a magnetic information recording unit. The transparent magnetic information recording layer is formed on the surface of the support in a region corresponding to the back side of the optical information recording portion. In order to prevent the information input by optical means from being erased by so-called "light fog", the photographic film is a light-tight cartridge (for example,
It is preferable to store them in the Japanese Patent Application No. 1-17253).

[0009]

EXAMPLE FIGS. 2 and 3 show an example of a photographic film usable in the present invention. As shown in FIG. 2, the support of the photographic film 1, that is, the base 2 has a thickness of 122 μm. Base 2 is a cellulose triacetate base,
Magnetic body on its back side a rate of ^{0.1g / m 2 (γ-Fe} 2
O ₃₎ 3 is applied (see JP-B-57-6576). On the front side of the base 2, the coated silver amount is about 7 g / m ²
In this proportion, the photosensitive layer 4 for a color negative film having a sensitivity of 400 is formed (see JP-A-63-236035). FIG. 3 shows a state in which the photographic film 1 is stored in the photographic film cartridge 5. The photographic film cartridge 5 comprises a spool 6 and a cartridge body 7, and the spool 6 has one end 6a at the cartridge body 7
The other end 6b is supported rotatably around the axis, and the spool 6 can be rotated from the outside of the cartridge main body 7. The photographic film 1 is accommodated in a spool 6 in a rolled state, and an opening 8 for drawing out the photographic film 1 is formed in the cartridge body 7.

The photographic film 1 has an image exposing portion 9, an optical information input portion 10, a portion 11 which serves both as optical information input and magnetic information input, and a perforation 12 for positioning a frame of the photographic film 1. . The optical information input portion 10 is an optical storage means utilizing the photosensitivity of the photographic film 1. For example, various kinds of information input using the photographic film 1 stored in the photographic film cartridge 5 and print creation utilizing the information are as follows.
It is performed as follows. Information such as a DX code and a film manufacturing date is input to the optical / magnetic information input portion 11 during film processing. The input may be characters or bar codes may be used. The date of photography, the presence / absence of a strobe, trimming information for pseudo zoom, and the like are input to the optical information input portion 10 in the form of a bar code using the LED mounted on the camera. The print conditions for correcting the aging of the film are automatically set from data such as the date of film production, the date of photography, and the date of development. The setting is automatically performed according to a program previously installed in the auto printer.
As a result, it is possible to minimize deterioration in print quality due to the aging of the film. When a strobe is used, correction is automatically made to add yellow to the print according to a program incorporated in the auto printer. As a result, the color correction, which conventionally relies on humans, is automatically performed, so that the color variation of the strobe-use photograph is reduced. According to the pseudo zoom information, trimming is automatically performed by an auto printer at the time of printing. Even when trimming is performed, the shooting date is printed in the lower corner of the print screen. As described above, the pseudo zoom print can be made without any manual operation, and the date can be printed in the pseudo zoom print. As a step for carrying out the method of the present invention, in the laboratory, the print conditions predicted in step 1 and the corrected print conditions of each frame are set to the optical and magnetic information input portion 1.
Input 1 magnetically. As a result, a change in color tone during simultaneous printing or reprinting can be reduced. As another step for carrying out the method of the present invention, the number of prints to be reprinted, trimming conditions and the like are magnetically input to the optical / magnetic information input portion 11 at the next store. This improves the efficiency of the lab's reprint and facilitates reflecting the photographer's intention on the print.

As is apparent from the above, by using the optical means and the magnetic means in combination as in the present embodiment, various information can be input not only at the time of photographing but also after development, The image quality of the print can be improved. Next, another embodiment of the photographic film cartridge which can be used in the present invention is shown in FIG. The cartridge 20 includes a cartridge body 21, a flexible wall portion 22 joined to the cartridge body 21 at one end thereof, and a spool 23 rotatably supported inside the cartridge body 21.
Consists of The flexible wall portion 22 has a pair of protrusions 24a and 24b formed at both ends for engaging with a mechanism on the camera side.
The photographic film 25 is housed inside the cartridge body 21 in a state in which the photographic film 25 is tightly wound in a roll shape on the spool 23. The photographic film 25 is the photographic film 1 shown in FIG.
The same as the above is used (see Japanese Patent Application No. 63-57785). When the cartridge 20 is loaded into the camera, a mechanism (not shown) on the camera side engages with the protrusions 24a and 24b and pushes up the protrusions 24a and 24b. Since the cartridge 20 is fixedly mounted inside the camera, the protrusion 24a,
By pushing up 24b, the flexible wall portion 22 bends upward as shown in FIG. 4 to form the film outlet 26. After this, the spool 23 is moved in the film feeding direction (4th
Since the photographic film 25 is tightly wound around the spool 23 by rotating it in the counterclockwise direction in the figure, the photographic film 25 is sent out from the film outlet 26 and guided to the film exposure position in the camera.

The cartridge body 2 of this cartridge 20
A magnetic tape 27 is provided on the outside of the wall portion 1 as a magnetic storage means.
Is pasted. As the magnetic tape 27, for example, a commercially available magnetic tape for audio can be used.
Information relating to film sensitivity is previously input to the magnetic tape 27, and an appropriate input / output mechanism (not shown) on the camera side reads the information when the cartridge 20 is loaded. Further, when the cartridge 20 is taken out from the camera, information on the number of used films is input to the magnetic tape 27 by the input / output mechanism on the camera side. When the patrone in which the information on the number of used films has been input is reloaded into the camera, the used film can be prevented from being fed. The photographic film can be fed automatically until the exposure position is reached. As the magnetic storage means, an EEPROM is used instead of the magnetic tape 27.
Can also be used (see JP-A-62-116932). DX code, film usage status, shooting location, etc. are input to this EEPROM. In addition, if information such as printing conditions is input to the EEPROM in the lab, the information can be utilized later at the time of reprinting. Further, the number of reprinted sheets, trimming conditions, etc. of the photographer can be input to this EEPROM.

Further, in the above embodiment, a photographic film in which the film base containing a magnetic material is a cellulose triacetate base may be used. In this case, the printing conditions of each frame are also input to the EEPROM in the laboratory.

[0014]

INDUSTRIAL APPLICABILITY A photographic film provided with a magnetic recording layer together with an optical recording portion is used, and when the photographic film is developed and printed after image exposure in the image exposure portion, printing conditions are set to the magnetic recording layer. By magnetically recording the data, it is possible to conveniently record the printing conditions in a development lab or the like and easily and reliably input various information at various times.

[Brief description of the drawings]

FIG. 1 is a plan view showing the area of each part of a photographic film,

FIG. 2 is a sectional view of a photographic film according to the present invention,

FIG. 3 is a sectional view of an embodiment of a cartridge according to the present invention,

FIG. 4 is a perspective view of another embodiment of the cartridge according to the present invention.

[Description of sign]

 1 Photographic Film 2 Base 3 Magnetic Material 4 Photosensitive Layer 5 Photographic Film Patrone 6 Spool 6a, 6b Both Ends of Spool 7 Cartridge Body 8 Opening 9 Image Exposure Section 10 Optical Information Input Part 11 Optical and Magnetic Information Input Part 12 Perforation 20 Photographic film cartridge 21 Cartridge body 22 Flexible wall 23 Spools 24a, 24b Protrusion 25 Photographic film 26 Film outlet 27 Magnetic tape

Claims (1)

(57) [Claims] 1. A support, a photosensitive layer formed on one surface of the support, and a transparent magnetic recording layer formed on the other surface of the support. The photosensitive layer comprises: An image exposure part having an area of 350 mm ² or more and 1200 mm ² or less is formed, and one frame of the image exposure part is formed in the region of the photosensitive layer located outside the image exposure part in the width direction of the photographic film. An optical information recording portion having an area of 15% or more of the area of one frame of the image exposure portion is formed, and the transparent magnetic recording layer is a region on the back side of the optical information recording portion, and the other side of the support is formed. Of the optical information recording section, and a part of the optical information recording section is recorded with information related to the manufacture of the photographic film in the process of manufacturing the film. Of the static information recording section Information recording method in the photographic film, characterized in that necessary information as the print condition portion is magnetically recorded on the transparent magnetic recording layer of printing conditions when developing printing the photographic film after being recorded.