JPS63296004A - Optical filter and color-proof forming device containing optical filter - Google Patents

Abstract

PURPOSE:To shield a gelatin filter and the outdoor air by providing a recess to the side faces of confronting transparent glasses which sandwich the filter and packing an adhesive agent therein. CONSTITUTION:The gelatin filter 29a is sandwiched by two sheets of the confronting transparent glasses 70a, 70b. The recess is formed in the side faces of these glasses 70a, 70b and the adhesive agent 71 is packed in the recess so that the filter 29a is shut off from the outdoor air. As a result, the filter is unaffected by a change in the ambient humidity and the generation of the wrinkles which act as an optical lens in the filter 29a is prevented even if the ambient humidity changes. The good color-proof which is free from various color image deviations is formed.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a color proof (color inspection plate) creation device. More specifically, the present invention relates to a color proof creation device that uses color vapor to create a color proof used for checking the quality of color printed matter, and is capable of creating a positive color proof from a negative or positive original image. .

[Background of the invention]

Ideally, to check the quality of color printed matter, it is desirable to check the quality of printed matter printed by this machine, but it takes time and
This is disadvantageous in terms of work and cost, and conventionally, proof printing using a proofing machine has been used as a substitute for quality checks. Proofreading was also carried out outsourced to outsiders, so-called four proofreaders, but due to competition in delivery times and prices in recent years, the process within printing companies has been differentiated, specialized, and
Coupled with demands for rationalization, the need for a so-called "white cane" system for in-house proofreading has increased, and there has been a demand for the development of a "color proof system" that is quick, easy, and allows stable self-proofing. In response to the above request, Cromarin (DuPont), Color Key (3M), Transfer Key (3M), Gebaproof (Agfa/Gevev1), Shiv-7ri/Electrogram (Remac), etc. were proposed, and further There are the Image Conductor (Toppan Co., Ltd.) and EP-111-B (D, S, Co., Ltd.) as electronic color monitor types, and the Chippa Iggy 7Tomi type that uses color paper similar to the method of the present invention. There is ``7 Nochrome CB Print'' by ± Film Company. Publicly known documents for understanding the present invention include: 1) Color Blue 7 system using color paper/Print magazine 1
981 (Vol, 84) 7 P, 10 = P, 162) Plate making system using Pruner system and Cromarin QCS 4) Fuji color art system as off-press color proofing 2) to 4), Japan Printing Institute 1986 Technical Committee Research Regular Meeting Text) P, 6-P, 195) JP-A-56-104335 Publication 6) JP-A-56-113139 The present invention is directed to the creation of color proofs using only color paper. However, the Diva Geigy/Fuji Film company, which is conventionally known as a method using this method, uses a color scanner or a plate-making camera to print yellow (Y version), magenta (M version), cyan (
A halftone film version (0 version) was prepared, and the halftone film version was successively covered with a color photosensitive material and exposed three times under safelight light for color paper (Fuji Film: 5LG-103A). It will be developed later. The finished color proof is the same size as the halftone film version, and all of the above processing is done in a dark room, except when special light sources and color photosensitive materials are used. The original film obtained by color separation of the original color original may be negative or positive, but when exposing, the type of color photosensitive material must be selected according to the type of original image, and There are also differences in development processing, which not only makes the work complicated, but because conventional equipment is operated in a dark room, there is a risk of setting mistakes in color photosensitive materials, and the time required to create color proofs is short. This poses an obstacle in the way of achieving the desired goal. A device for creating a color proof using a color paper system is provided with a filter in an optical system including a photographic lens. The filter is set in a filter turret, and any filter can be selected by rotating the turret. These filters are generally available in three types: B (blue), G (green), and R (red). Conventionally, for example, WRATTE manufactured by Eastman Kodak Company
When using the N PHOTMECHANICAL FILTER (gelatin filter) for color separation or color synthesis of blue, green, and red, the gelatin filter is held between filter frames. The filter frame has a circular cutout in the center, exposing the gelatin filter so that it can come into direct contact with the outside air. If a gelatin filter is used for a long time with a filter frame in which the filter surface is in direct contact with the outside air, the gelatin filter will be affected by the outside air. Gelatin filters are affected by the temperature and humidity in the atmosphere, and especially when it is hot and humid, the gelatin filter expands and contracts, causing wrinkles in the exposed portion of the gelatin filter.

[Problems to be solved by the invention]

When a wrinkled gelatin filter is set in an optical system using a projection lens and projected, the wrinkled part has a lens effect, so the light transmitted through other parts of the gelatin filter is different from the light transmitted through the wrinkled part. A slight difference in refractive index occurs, and the image formation position becomes different, resulting in a blurred projected image. Furthermore, when using three color filters of blue, green, and red, wrinkles occur in different locations for each color, so after a point on the original image passes through each of the color filters, the image formation position will be different, resulting in the same point. This has the disadvantage that they do not overlap at one point, resulting in misalignment. The present invention has been made in view of the above-mentioned shortcomings of the prior art, and provides an optical filter that is configured so that the filter surface is not directly exposed to large amounts of heat to prevent wrinkles from forming on the filter surface. The main purpose of this paper is to clarify a color proof production device using filters.

[Means to solve the problem]

The above purpose is to tightly sandwich both sides of the gelatin filter.
An optical filter is characterized in that a recess is formed on the entire outer periphery of a side surface of a sheet of transparent glass, and the recess is filled with an adhesive to isolate the filter from outside air, and a gelatin filter is tightly sandwiched between both sides. A recess is formed on the entire outer periphery of the side surface of a sheet of transparent glass, the recess is filled with adhesive, and an optical filter is installed in the optical system including the photographing lens of the color proofing device, which isolates the filter from the outside air. This is achieved by a color proof production device characterized by:

【Example】

First, the basic configuration of the color proof production device of the present invention will be explained, and then a specific example of the device of the present invention will be explained according to the attached drawings. Basic Structure A preferred embodiment of the optical filter of the present invention and a color proof production apparatus using the optical filter includes an exposure system (A), a development processing system (B), and a control system (
C), but consists of an exposure system (A) and a control system (
It also includes embodiments consisting of (C) and lacking the development processing system (B). The exposure system (A) includes a light source, a document table, a shutter, a lens, an optical filter of the present invention, an exposure table, a supply of color photosensitive material,
It includes elements such as conveyance and unloading means, and the control system (
C) includes turning on/off the operation of each of the above elements, detecting the operating time or amount, detecting malfunction, switching, selection, warning or instruction, etc. An exposure system for image projection in an optical filter color proofing device or the like uses a light source to illuminate a plurality of original films obtained by color-separating a color original using a color scanner or a plate-making camera from behind to generate a light image. This is a system that projects a light image onto a photosensitive material by transmitting it through an optical filter. Specifically, the optical image of the original film that has been color-separated using blue light is transmitted through a blue filter, and the optical image of the original film that has been color-separated using green light is transmitted through a green filter, and is separated using red light. A full-color image can be obtained by transmitting the optical image of the original film through a red color filter. FIG. 1 is a side sectional view showing an embodiment of the optical filter of the present invention, and FIG. 2 is a top view of the optical filter. In these figures, 29a is a gelatin filter, 70
a and 70b are transparent glasses, and 71 is an adhesive. Gelatin filter 29a is JRATTEN PHOTO
MECI(ANICAL FILTERPM 47 B
(blue), PM 58 (green), PM 25 (red), "manufactured by Eastman Kodak Company." The plate thickness of these gelatin filters 29a is constant at 100 μm. The transparent glasses 70a and 70b are made of synthetic quartz T-4040 (
(manufactured by Toshiba Ceramics), white plate glass C0DE No.
7059 (manufactured by Corning), etc. transparent glass 70
The necessary conditions for a and 70b include that there is little change in the refractive index within the visible light region, that the coefficient of thermal expansion is small, and that the material has excellent weather resistance. The surfaces of the transparent glasses 70a and 70b are polished. The processing accuracy of the polishing is such that the basic plate thickness f■ has a thickness error within 10 μm over the entire surface. For the adhesive, use a silicone-based adhesive that has excellent weather resistance, such as ultraviolet curing. Alternatively, it is also preferable to use an Epoquin adhesive. The optical filter 29 of this embodiment is a gelatin filter 29
Two transparent γ laths 70a are tightly sandwiched on both sides of a. A recess is formed on the entire outer periphery of the side surface of 70b, and adhesive 7 is applied to the recess.
1 and isolates the filter 29a from the outside air. The optical filter 29 configured as described above is less affected by the temperature and humidity of the outside air. That is, since the two transparent sheets 0a and 70b are sandwiched between the two transparent sheets 0a and 70b, the outside air does not come into direct contact with both surfaces of the gelatin filter 29m. The entire outer periphery of the side surface of 70b is covered with adhesive 71, and moisture in the outside air is blocked by this adhesive 71. Around the gelatin filter 29a are two transparent sheets 7.
When sealed in 0a and 70b, my humidity level is maintained. This prevents wrinkles from forming on the gelatin filter 29a due to changes in the humidity of the outside air. Therefore, the optical filter 29 configured in this manner has a uniform refractive index over the entire surface, and there is no shift in the imaging point caused by differences in local refractive index due to the lens effect, so image blur etc. This can also prevent problems. If the optical filter according to the present invention is used in an image projection exposure system including a color proof production device, it is possible to obtain a clear projected image. 3 and 4 are cross-sectional views of optical filters showing other embodiments. What is shown in these figures are two transparent glasses 70a that tightly sandwich a gelatin filter 29a from both sides.
, 70b is the shape of a recess formed on the entire outer periphery of the side surface. In the embodiment shown in FIG. 3, the cross-sectional shape of the recess is approximately semicircular. In the embodiment shown in FIG. 4, the cross-sectional shape of the recessed portion is formed into a U-shape. In the present embodiment shown in FIG. 1, the cross-sectional shape of the recess was formed into an inverted triangular shape, but in both cases, the recess was formed so that the adhesive could be easily applied to the recess. In addition, since the adhesive 71 described above does not have fluidity after being applied, it maintains the form at the time of application, and does not protrude outward from the recess, and penetrates inward due to capillary action. There's nothing to do. The optical filter of the present invention has two surfaces on both sides of the gelatin filter.
The gelatin filter was tightly sandwiched between two pieces of transparent glass, and the entire outer periphery of the sides of the two pieces of glass was covered with adhesive to isolate the gelatin filter from the outside air. It is also preferable to configure Important means and functions in the optical filter and color proof production device using the optical filter of the present invention are as follows:
In addition to the above-mentioned optical filters, these filters are related to the storage, selection, supply, and processing control of color photosensitive materials that enable the selection of specific color photosensitive materials according to the type of original image.
The following will be explained in order. Specification of Original Image There are two methods for determining whether a document image is negative or positive: one is a method that is visually checked by an operator, and the other is an automatic method. In the case of visual determination by the operator, the operator visually determines whether the image on the original film is negative or positive, and then presses the selection button CI or C2 provided on the control panel or the original table. I will do it. To perform automatic discrimination between negative and positive, for example, at the stage of creating the original film, specifying information for negative and positive, such as so-called registration marks, is printed on the part of the original film that does not interfere with the image information. It is recorded together with the type information of the plate, M plate, 0 plate, and BK plate, or this information can be recorded on the original film by attaching a barcode label, etc., to the original film prior to the exposure process. The information is then read by a reading device provided on the device side, or by manual operation by the assigner. In addition to the above information, information necessary for image enlargement or reduction magnification, color proofing, and further information necessary for printing are stored in a part of the original film, and all or part of these information is stored. It is also preferable that the color proof be displayed on the color proof. In addition to preparing positive and/or negative types, it is preferable to prepare color photosensitive materials of different sizes.Color photosensitive materials should be cut in roll form. It doesn't matter what it is. It is preferable that these color photosensitive materials are stored in a magazine and supplied into the apparatus together with the magazine. Selection and Supply of Color Photosensitive Material When the original image discrimination information is input, a negative or positive color photosensitive material is selectively taken out from the magazine and supplied to the exposure position. This method relies on switching the transport system, but by switching the optical path to separate exposure positions where different types of color photosensitive materials are prepared,
The color photosensitive material may be specified by moving the exposure position. In such a system, only the transport system associated with the selected color photosensitive material is controlled to operate. When the size of the color photosensitive material to be used is small, prepare different types of cut paper on a turntable-like support and rotate the support to place the specific type of color photosensitive material (a magazine containing it) at the exposure position. ) may be used to select a color photosensitive material. In such a system, it is preferable that magazines other than the selected one be regulated in a light-shielded state. Carrying out the exposed color photosensitive material In the case of an embodiment in which the exposure system (A) and the development processing system (B) are not integrated, it is possible to store only one sheet of the exposed color photosensitive material or to store multiple sheets of the exposed color photosensitive material. However, in the latter case, a magazine for negative color photosensitive materials and a magazine for positive color photosensitive materials are automatically selected so that negatives and positives are not confused. Preferably, the exposed color photosensitive material is stored therein. On the other hand, the magazine itself is also made of negative color photosensitive material. It is preferable to provide identification means, such as markings or uneven cutouts, to determine whether the material is being stored with a positive color photosensitive material or a positive color photosensitive material. It becomes possible for an automatic processor to automatically identify and process the image. In the case of an apparatus in which the exposure system (A) and the development processing system (B) are integrated, the exposed color photosensitive material is automatically fed into the automatic developing machine by a conveyance means. Control of the development processing system (B) If the exposure system (Δ) and the development processing system (B) are not integrated, as described above, the information recorded in the magazine containing the exposed color photosensitive material Accordingly, the processing system is controlled, for example, ON/OFF of secondary exposure, processing speed, etc., but these may be performed manually by the operator. In the case of an apparatus in which the exposure system (A) and the development processing system (B) are integrated, the processing systems are controlled at the same time when the type of document image is specified. Furthermore, this control is performed from the exposure system (A) to the development processing system (B).
A sensor for detecting the type of color photosensitive material may be provided in the middle of the conveyance path for transferring the color photosensitive material, and the processing may be performed according to the detected information. Displays and warnings In order to prevent erroneous operations and shorten processing time, the operation panel etc. displays information such as the type of image specified, the type and size of the color photosensitive material used, the magnification or reduction ratio, and the operation of the processing system. In addition to displaying the status etc., it is preferable to display a warning of malfunction or support for operation. 1”

[Next, a specific example of the color proof production device according to the present invention will be explained according to the attached drawings. FIG. 6 is a schematic front sectional view of the device, and FIG. ptS7 is a schematic side sectional view of the device. In the figure, reference numeral 10 denotes a frame body in which an optical system 20, a color photosensitive material conveying system 30, and a developing processing system 40 are installed. The developing processing system 40 may be configured in a frame separate from the frame 10 and connected to a part of the color photosensitive material transport system 30, or the exposed color photosensitive material may be stored in a light-shielding magazine or the like. It is also possible to process the image by setting it in a developing processing system 40 located at a remote location. In case of T & person, optical system 20
It is possible to expose a color photosensitive material by arranging a plurality of them and input it into a single development processing system 40 prepared separately, or to use a plurality of development processing systems 40, or to use both. By using a plurality of color proofs, it is possible to speed up the creation of color proofs.Furthermore, by being able to input the exposed color photosensitive material into the developing system 40 using a magazine or the like, it is possible to speed up the creation of color proofs. It has the advantage that it can be used for purposes other than proof creation. Of course, it is also preferable that a color photosensitive material that has been exposed externally can be fed into the development processing system 40 integrated with the optical system 20, separately from the transport system 30 for the original color photosensitive material. In color plate inspection, negative color vapor, negative color film, positive color vapor, positive color film, etc. can be used as color photosensitive materials, and since the original image may be negative or positive, color As the photosensitive material 50, a magazine 3 as shown in FIG.
Roll-shaped negative color photosensitive material 51 stored in 1
A positive color photosensitive material 52 is prepared. To set the color photosensitive material 50 in the apparatus, as shown in the figure, the leading end is slightly pulled out from the magazine 31, and the leading end is held in a spaced state so that it is sandwiched between the nip rollers 32 of the transport system 30. This is done by pushing the magazine 31 into the When the magazine 31 is set and the nip roller 32 is pressed, the conveyance system 30 for the color photosensitive material 5o is completed.
Loading is completed. By pressing the set operation button, the conveyance system 3° is activated, the color photosensitive material 5o is pulled out by a certain length, and the rear end is cut by the cutter 33. The length to be cut is controlled by measuring the feed length from the position of the cutter 33 using a timer or the amount of rotation of the conveyance roller, but the length is related to the magnification in the optical system 20, which will be described later, and is constant. For example, if the halftone original film is A
3 sizes, and if the magnification is l:l, it will be cut to A3 size. The cut color photosensitive material 50 is conveyed to the exposure table 34 according to the rotation of the conveyance roller of the conveyance system 3o. As shown in FIG. 9, the exposure table 34 is composed of one or more endless belts provided with a large number of small holes, and is conveyed to the front position of the exposure table 34 by rotation of a conveyance roller. The color photosensitive material 50 is temporarily stopped, and by operating the suction fan 35 provided on the back surface of the exposure table 34, the color photosensitive material 50 comes into close contact with the front surface of the exposure table 34, and preparation for exposure is completed. In Figure 7, 21
Reference numeral denotes a document table in the optical system 2o, and as shown by a phantom line, a document is set or taken out by rotating it horizontally using an operating arm. As shown in FIGS. 10 and 11, on the document table 21,
Light source 2 equipped with a light reflecting plate in the space of a box-shaped frame body
2. A light diffusing plate 23 is prepared. After placing the original film 60 on a predetermined upper surface position of the light diffusing plate 23 using a registration bin and covering it with the Mylar sheet 24, if the vacuum pump 25 shown in FIG. 7 is operated, the light diffusing plate The suction force acts through suction grooves prepared around the sheet 23, and the original film 60 is attached to the mylar sheet 2.
4 and comes into close contact with the upper surface of the light diffusing plate 23. At this time, it is more effective to squeeze the top surface of the mylar sheet 24 with a roller. Note that although the rotating shaft 26 of the document table 2I is made hollow and is used as part of the intake pipe from the vacuum pump 25 to the document table 2I, the suction pipe is arranged separately from the rotation wheel 26. Good too. Countermeasures against uneven illuminance due to the light source of the document table 21 (in general, the illuminance tends to be high at the center and low at the periphery)
The following methods are used: a) Lower the reflectance at the center of the light reflector and increase the reflectance at the periphery (pasting paper, etc. with low reflectance at the center of the reflector,
b) Shorten the distance between the peripheral light source and the light diffusing plate to increase the amount of light in the peripheral area. C) Arrange peripheral light sources densely. d) Increase the amount of light from the ambient light source by increasing the voltage, etc. e) Use a high-intensity light source in the periphery. r) Add a small light source to the periphery. g) The thickness of the light diffusing plate 23 is made thinner at the periphery than at the center. 'h) Adjust the illuminance by attaching a light-absorbing film or the like to the back side of the central light source to reduce the amount of reflected light. The illuminance distribution on the document table 21 is adjusted so that the illuminance distribution of the image projected onto the exposure table 34 through the optical system 20 shown in FIGS. 6 and 7 is uniform. In FIG. 11, the light source 22 of the document table 21 is a cylindrical light source such as a fluorescent lamp, and the frequency intensity distribution of the light is almost constant in the visible light region, and is shown arranged vertically or horizontally. , a xenon lamp, a halogen lamp, or other strong light source may also be used. In the apparatus shown in FIGS. 6 and 7, as the optical system 2o,
Although the light source 22 (original table 21), reflective mirror 19, optical filter 29, lens 28, shutter 27, and exposure table 34 are used, the order of the shutter 27, lens 28, and optical filter 29 may be changed. In addition, optical filter 2
9 is set on a filter turret as shown in FIG. 12, and B and G are set by rotating the turret. Any optical filter 29 for R, UK can be selected. It is also possible to incorporate a plurality of filters into the lens and have them selected. The shutter 27 is fixed by a light-shielding plate that partitions the internal space of the frame 10, and divides the exposure optical path into the light source side and the color photosensitive material side, and the optical path on the light source side is placed under a bright room. is possible. In the case of the above configuration, the shutter 27 and its mounting plate form a light shielding means, but an independent light shielding means may be prepared separately from the shutter 27, and the mounting plate is formed into a bellows-shaped, Alternatively, it may be configured to be movable, such as a flexible curtain body. Furthermore, the light shielding means may open and close the optical path in conjunction with the opening and closing operations of the document table 21. Further, although not shown in detail, it is also preferable that the optical system 20 incorporates an optical mechanism that allows the image to be enlarged or reduced. In the case of the apparatus shown in FIGS. 6 and 7, three types of filters 29 are prepared for positive color photosensitive materials: B (blue), G (green), and R (red).
Y (yellow), M (magenta), and C are used as filters to adjust the light source to complete white for color photosensitive materials.
(Cyan) filter combination filter is set. The exposure amount corresponding to each color separation is adjusted by using a timer in the control section 11 and adjusting the exposure time corresponding to each color separation. Or [3, This can also be done by changing the density of the G, RS, and BK filters,
Furthermore, when using a high-intensity light source such as a strobe flash, a xenon lamp, or a halogen lamp, this can be done by controlling the lighting time and light intensity of the light source after opening the shutter. . Furthermore, as the document table 2I, as shown in FIG. 13, a type that performs slit-type scanning exposure using a cylindrical halogen lamp as a light source can also be used. In such a case, the exposure amount can be adjusted by changing the scanning speed by controlling the width of the ribs, the width of the ribs, and the rotational speed of the drive motor. It is also preferable to turn on a halogen lamp immediately before starting scanning, and to install a fan to exhaust heat. Although the scanning direction is the vertical direction in the drawing, it may be the horizontal direction. The magnification of the projected image through the optical system 20 is 1:l,
By using a zoom lens (variable focal length lens) or the like, it is also possible to perform reduction or enlargement projection to form an image. In particular, in the case of reduction, since a color proof can be created by reducing a large size plate, the area of the color photosensitive material can be reduced, and the color proof can be obtained at low cost and in an easy-to-read and convenient form. After the exposure, the color photosensitive material 50 is transferred to the development processing system 40.
is discharged to the automatic developing section. The conveyance speed of the roller in the automatic developing section and the conveyance speed of the roller when ejecting the photographing section are made to match.
It is preferable to prevent transportation defects. When the speed of the rollers in the photographing section is high, a sensor is attached to the roller at the entrance of the automatic developing section, and the clutch of the roller in the photographing section is released when the color photosensitive material is bitten by the roller at the entrance of the automatic developing section. This allows for smooth conveyance. The exposed color photosensitive material 50 that has entered the automatic developing section undergoes the processes of immersion, second exposure, and development in a developing tank.
It then undergoes a plumbing-free, water-free washing process where the final image is formed by bleaching, fixing, stabilizing, and drying processes. In each of the processing tanks for development, bleaching/fixing, and stability 11 and stability 2, the respective processing solutions are constantly agitated by circulation pumps. Further, in the developing and bleaching/fixing tanks, a temperature controller (#1 exchanger) is used to maintain a constant temperature at all times to stabilize the image. The second exposure lamp 41 uses a light source with equal intensity over the visible light region, and inverts the development nuclei of the silver halide grains without disturbing the color balance. Further, by inserting a transparent glass or the like between the second exposure surface and the photosensitive material, it is possible to eliminate the influence of turbidity of the developer on the illuminance. The stabilization tank consists of one stabilization tank and two stabilization tanks, and the overflow liquid from the two stabilization tanks flows into the first stabilization tank. The counter 70 is replenished by a sensor at the entrance of the automatic processing machine (automatic processing machine) only while the color photosensitive material is passing through, and the processing solution is kept activated. In other words, the developer replenisher is in the developer tank, and the bleach/fixer replenisher is in the bleach/fixer tank.
The stabilizing solution is supplied to the fixing tank and the two stabilizing tanks from a replenishing tank using a bellows pump or the like. It is desirable to separate the overflow solution into a bleaching/fixing solution and a stabilizing solution that contain silver and a color developing solution that does not contain silver and then collect them. In order to save energy, it is preferable that the heater in the drying section is activated when a sensor detects when the color photosensitive material is transported from the processing tank. The specific configuration of each prefecture and the arrangement of each prefecture in the apparatus shown in FIGS. 6 and 7 are not limited to what is shown in the figures, and various design changes are possible. For example, the manuscript table 21
is placed on the upper surface of the frame lO, and after setting the original in the horizontal state shown in FIG. 1O, the original table 21 is rotated 180 degrees to expose downward; Form the document table 21 into a drawer shape and pull it out horizontally from the frame lO, set the document film on the top surface of the document table 21, and then open the frame 1.
0 and expose from below to above, or as shown in Japanese Utility Model Application No. 58-77336,
By arranging a prism or the like in the optical path, it is possible to facilitate operation and make the device more compact. Furthermore, when cut paper is used as the color photosensitive material 50 instead of one prepared in roll form, it is possible to reuse the techniques of conventional printers, copying machines, etc., such as supplying and transporting the paper. . [Exposure] Next, the operation of exposing the image on the original film 60 to the color photosensitive material 50 using the above-described apparatus will be described. The original film 60 is a Y version (yellow), an M version (magenta), a C version (cyan), and a BK version (black), which are created by color-separating a color original using a color scanner or a plate-making camera. It consists of a negative version. To set the original film 60 on the original platen 21, place the original film 60 on the original platen 21.
This is done by engaging a pin provided on the upper surface of the document film 60 with a registration hole prepared on the side of the original film 60, but it is also possible to use a so-called register mark. In conventional color proof creation, Y version, M version, C version
Since each of the original film 6G of the plate and Bl [plate was exposed individually, it was necessary to set the original film on the original table four times, that is, to expose the original film four times. In the method for creating a color proof using Ciba Geigy/Fuji Film Co.'s color paper described above, a BK plate is not used, so three exposures are performed. In the present invention, a BK plate is first set on the document platen 21, and a 7th plate original film is superimposed on it to form a B film and a BK plate.
Exposure in the evening, below, BK version and M version exposed with G filter, B
By exposing the K and C plates three times using an R filter, it is possible to create a full-color color proof. In other words, in the case of positive color paper, there are B, G, R1, and Y, M, and 0 layers that are photosensitive, and only the areas that are not exposed to light are colored Y, M, and C, respectively. On the other hand, if the film original has been color-separated and becomes Y, M, C, and BK positive film as shown in Figure 14, the 7th version film and the BK version film are overlapped and the BK version film is printed. If the film is exposed and then developed, it will be exposed as shown in FIG. 15. Furthermore, when the M version film and the BK version film are exposed to G light and developed, as shown in FIG. 16, the 0 version film and the BK version film are further exposed to RW light and developed, as shown in FIG. 17. Therefore, the original color original is reproduced, and therefore only three exposures are required. Also, when creating a color inspection plate for color separation, for example,
When inspecting only the plate, as shown in FIG. 18, it can be obtained by exposing the 7th plate film to B exposure, followed by G exposure and R exposure to the entire surface. When using the M plate, pass the M plate positive only when using CiIg light, when using the C plate, pass the 0 plate positive only when using RW and light, and expose the entire surface to 3.
Separated colors can be obtained by multiple exposures. In the case of BK version film, as shown in Figure 19,
Color separation can be obtained with one W exposure using a filter. Of course, the same result can be obtained by using a BK film instead of WW and light and performing three exposures of B, G, and n. When creating a color inspection plate of two or more colors, combine the above methods. For example, in the case of Y version and M version, in Figure 20, M
It can be obtained by sandwiching a plate film. However, if the BK version is included, the W tip cannot be used and the first
In the B, G, and R exposures shown in Figures 9 to 21, B
You will be passing K-plate film through it. In order to form a color image from a negative Y version, M version, 0 version, and BK version original film, a negative color photosensitive material 52 prepared in the apparatus is used as the color photosensitive material 50. The process of taking out the negative color photosensitive material 52 from the magazine 31 and setting it on the exposure table 34 is the same as that for the positive color photosensitive material 51. The method for selecting films and filters is as shown in FIG. That is, for the Y plate (negative), M plate (negative), 0 plate (negative), and BK plate (negative) that have been color separated as shown in the figure, the Y plate negative is exposed to B exposure, the M plate negative is exposed to Gg light, and the M plate negative is exposed to Gg light. It is obtained by exposing the 0 plate negative to Ri light and the BK plate negative to W exposure four times. This is because the Y, M, and C of the negative color paper are sensitive to B, G, and R, respectively, and the areas that are exposed to light develop colors of Y, M, and C, respectively. After exposure and development, the result is as shown in FIG. 19. Similarly, in FIG. 22, the same positive image as the color original document is reproduced. In this case, the color separations can be obtained by one exposure of each required plate. For example, to obtain the color separation of a Y plate negative, use Y
It is only necessary to expose the plate negative once with B exposure. In order to separate the colors of the BK plate negative, it is sufficient to expose the BK plate negative to W exposure once, but of course, the BK plate negative may be subjected to three exposures of B, G, and H as it is. When performing separation of two or more colors, it is sufficient to expose the plate of the color once to the corresponding light. For example, when color-separating a Y-plate negative and an M-plate negative, it is sufficient to simply expose the Y-plate negative to B exposure and the M-plate negative to G exposure. If a BK version negative is included, W exposure of the BK version negative is included, and B, G, and 13 exposures of the BK version negative cannot be performed. The process of transporting to the automatic developing section is the same as for positive color photosensitive materials, except that the second exposure lamp 4 of the developing tank
1 is set to OFF in the case of a negative color photosensitive material, and the image is not inverted. The same processing agents and equipment as those used for positive color photosensitive materials can be used, but the processing is controlled by changing the processing time (speed of the conveyance means). In the above description, the formation of a color image from an original film that has been converted into a halftone image has been described, but an image can be constructed in exactly the same way using a continuous tone color separation film that has not been formed into a halftone image. In this case, it is appropriate to use a color paper in which the γ (gamma) of the color photosensitive material has a small value of soft tone, rather than a high value of hard tone as in the case of a halftone image. Furthermore, although a direct positive color photosensitive material is taken as an example of the positive color photosensitive material, any positive photosensitive material such as color reversal paper, silver die process paper, diffusion transfer type instant paper, etc. may be used. Effects of the Invention According to the optical filter of the present invention, the transparent glass is tightly sandwiched from both sides of the gelatin filter so that both sides of the gelatin filter are not directly exposed to the outside air, and the entire outer periphery of the joint between the two glasses is fixed. Since the gelatin filter is covered with an adhesive, moisture from the outside air is blocked, making it possible to provide an optical filter that can prevent wrinkles from forming on the surface of the gelatin filter when it absorbs moisture. Furthermore, according to the color proof production device incorporating an optical filter of the present invention, since an optical filter is used that is not affected by changes in the humidity of the outside air, the filter has a uniform refractive index over the entire surface, and partial refraction is prevented. It is now possible to provide a color proof production device that prevents the shift of the imaging point due to the difference in rate, eliminates blurring of the image, and produces a clear, high-quality image with no color shift.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of the optical filter of the present invention, FIG. 2 is a top view of the optical filter, FIGS. 3 and 4 are side sectional views of other embodiments of the optical filter, and FIG. 5 is a side sectional view of the optical filter of the present invention. FIG. 6 is a schematic front sectional view of the color proof production device of the invention, FIG. 7 is a schematic side sectional view of the device, FIG. 8 is a perspective view of the magazine, and FIG. 9 10 is a perspective view of the document table, FIG. 11 is a sectional view of the document table, FIG. 12 is a schematic perspective view of the filter turret, and FIG. 13 shows another embodiment of the document table. A schematic cross-sectional view showing,
FIGS. 14 to 26 are explanatory diagrams of the exposure and color development mechanisms. lO...Frame 11...Control section 19...Reflection mirror 20...Optical system 21...Original table
22...Light source 23...Light diffusion plate 24
... Mylar sheet 25 ... Vacuum pump 26
...Original table rotation axis 27...Shutter 28.
...Lens 29...Optical filter 29a...Gelatin filter 30...Transport system 31...
Magazine 32...Nip roller 33...Cutter 34...Exposure table 35...Suction fan 4
0...Development processing system 41...Second exposure lamp 5
0... Color photosensitive material 51... Positive color photosensitive material 52... Negative color photosensitive material 60... Original film 70a, 70b... Transparent glass 71... Adhesive (A)... Exposure system ( B)...Development processing system (
C)...Control system Y...Yellow M...Magenta C...Cyan B...Blue G...Green R...Red BK...Sumi Applicant Konishiroku Photo Industry Co., Ltd. Fig. 4 70b L - - - - + + + + + 1 Fig. 8 Fig. 9 Fig. 26 E3GR8KYtlCW Fig. 11 Fig. 13 Fig. 14 Fig. 15 B BK Ji Fig. 16 Fig. 178J BGR day KYMCW 18 Fig. 19 Fig. 2 Summer Fig. E3KW Fig. 22 Fig. 23 YWYW Fig. 24 Profit amount 86 RWYM CW

Claims (2)

[Claims] (1) An optical system characterized by forming a recess on the entire outer periphery of the side surfaces of two sheets of transparent glass that tightly sandwich both sides of a gelatin filter, and filling the recess with an adhesive to isolate the filter from the outside air. filter. (2) Create a color proof optical filter by forming a concave part on the entire outer periphery of the sides of two sheets of transparent glass that tightly sandwich both sides of a gelatin filter, and filling the concave part with adhesive to isolate the filter from the outside air. A color proof production device characterized by being installed in an optical system including a photographing lens of the device.