JPH02109053A - Color proof producing device - Google Patents

Abstract

PURPOSE:To speedily forward an action for producing exact color proof by alarming that the device does not act when a photosensitive material which have characteristics incongruent to a purpose is mounted. CONSTITUTION:An original platen 140 is provided which possesses the top 141 and the bottom 142 in order to provide an original positioning pin-bar 143 upper side of the main body frame 101 which is supported by legs 102 upper side of a color proof producing device main body 100. A light shielding cover 120 which enables darkroom forming as a first chamber is provided to freely open and close with the aid of a hinge 121 and a gas dumper 122 on the top of the original platen. An exposing part 300 which scans and exposes the contact-exposing surface of the original platen 140 is provided in a first chamber 121 surrounded by an internal reflecting mirror 306 and transparent window 304 fixed by single or plural tube-shaped light sources 302A-302C in a box 316 at the center part of the exposing part 300. Besides, a photosensitive material placing part 200 is provided as a second chamber inside of the frame 101 and a photosensitive material placing table 201 can be driven upward and downward by a motor.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is a method for accurately positioning each color-separated printing original film (hereinafter sometimes referred to as a separated lt4g original film or a separated halftone yk original film) in a predetermined position. The original is placed on a positive or negative type color photosensitive material and exposed multiple times, once for each original, to create a color image with the same color scheme as the printed image. The present invention relates to a color proof production device for producing color proofs for direct visual inspection and for making posters from the proofs as they are.

[Conventional technology]

Conventionally, exposure devices have two methods: one method is to irradiate light source light onto the document surface and form an image on the light-sensitive material using a projection lens with the function of enlarging, reducing or equal magnification, and the other method is to overlay the light-sensitive material on the document surface and irradiate the light source light. There is a method of contact exposure.

Furthermore, there are two methods of irradiating light from a light source: scanning exposure and static exposure. The former uses a relatively small light source to create a compact exposure device, while the latter generally uses a relatively high-brightness light source and In order to achieve parallelism and uniformity, there is a distance from the light source to the exposure surface, which requires a large exposure device.

In the field of printing plate making, from continuous tone images such as reversal film, color defective film, and color paper,
In the process of creating a printing plate consisting of an image made up of halftone dots, a large amount of film is used to separate colors, combine images, etc. Therefore, the work becomes complicated,
Many mistakes occur, such as typographical and layout mistakes. Furthermore, since the client (orderer) requests changes in text such as prices, changes in prices, color changes, etc., it is easy to forget to make changes. It is also necessary to check in advance whether the printed matter will be finished in the desired color tone and gradation. These are collectively called proofreading.

For this reason, for the purpose of these confirmations, a variety of systems including proofreaders and prints called proofreading ffl+ have been announced and sold. ! For example, there are those using CRT, those using non-silver salt photosensitive materials such as 7 otobolimer diazo, those using dry toner, and electrophotographic methods. However, these calibration systems generally require a long time to calibrate one sheet, and have problems such as high material cost and poor workability, and have not been a system that is sufficient for practical use.

On the other hand, as another method of obtaining a proof, there is a method of printing a separation mesh original onto a color photosensitive material using color-separated light. For example, JP-A-62-280746, JP-A No. 62-28074
No. 7, No. 62-280748, No. 62-28074'
) No. 62280750, No. 62-2808119
No. 60-42760, etc., describes a method of obtaining a calibration material on a color photosensitive material using a photographing system using a projection lens. Although these devices are large, they are equipped with so-called lighting room specifications that allow work to be carried out in a normal room.
, the photosensitive material itself remains in the device,
Exposure operations can be performed under normal light without the need for a dark room. Therefore, it is possible to perform color calibration easily, in a short period of time, and at low cost, and it has better characteristics than other calibration systems. However, since it is a photographic system, effects such as lens flare occur, and deterioration in Wl tone reproducibility was observed. That is, due to flare etc., the small dots of the net tend to fly off and the large dots tend to collapse.

On the other hand, as another method for similarly obtaining a proof material (color glue 7) using a color photosensitive material, Chesley F, Ca
The CaBson from rison Company
Prooftnaster System, Kreo
Co1or Proofing from nite, Inc.
There is a contact exposure method sold under the name 5ysteI11. Since these methods involve exposing a color light-sensitive material to a separation mesh original in direct contact with the light-sensitive material, the gradation reproducibility is greatly improved compared to photographic methods. On the other hand, since color photographic light-sensitive materials have a photosensitive region in the entire visible range, they have the disadvantage that they cannot be handled in a bright room and are forced to be groped for work in a dark room.

[Problem to be solved by the invention]

As mentioned above, the close-contact method has better gradation reproducibility for separated mesh originals than the photographing method.

Achieving this with static exposure requires a large light source device, which requires a large installation space and is difficult to handle. If the entire surface is exposed by scanning the slit light in such a way that the entire image forming area to be closely exposed is uniformly exposed, the light source can be made smaller.

Normally, in a scanning exposure apparatus such as a copier, parallelism and uniformity of light are not so important.

On the other hand, reproduction of halftone gradation is an important problem in an apparatus for creating a color proof using a separated halftone original in the field of printing plate making. If phenomena such as small dots flying out or large dots collapsing occur, it becomes difficult to fully understand the RAM properties of the decomposition screen original on the proof material, and it becomes necessary to check it again on film, which is time consuming. Not only this, but it becomes extremely difficult to grasp accurate image reproducibility and color reproducibility depending on placement.

Furthermore, the negative separation screen original is placed diagonally above the negative color photosensitive material! When performing bipartite color exposure, it is sufficient to place one original film in close contact with the photosensitive material, but when exposing a positive separation mesh original onto a positive color photosensitive material, at least one color plate (yellow (Y),
Magenta (M), cyan (C) version) and ink (BK)
It is necessary to attach a total of two decomposable mesh films of the plate to the photosensitive material. For this reason, one of the two resolving mesh films is exposed to the photosensitive material through the thickness of one film. Furthermore, in the case of exposing positive separation mesh films for printed matter that are simultaneously printed with special inks called spot colors, it is necessary to simultaneously overlap and expose two or more separation mesh films. In these systems, the parallelism and uniformity of light greatly affect image reproducibility, and if these are insufficient, sufficient image reproducibility cannot be obtained even with contact exposure. In other words, fringes appear on the reproduced halftone dots, resulting in thinning or narrowing of the halftone dots, and partial fogging, resulting in +7! jIt causes quality deterioration.

In addition, it is most important that the decomposed tPi printing film and photosensitive material are in close contact with each other to maintain flatness. Therefore, it is necessary to cover the covered area with a transparent cover sheet and vacuum the inside of the covered area to achieve flatness. is being carried out.

However, even if all possible measures are taken to achieve high image reproducibility and quality, if the wrong photosensitive material is used, the damage will be enormous.

In other words, the photosensitive materials used can be negative, color, or positive color depending on the purpose, and even when using internal latent image type direct positive for positive color, there are photosensitive materials that require a second exposure or do not require it. . Furthermore, when using a dye-bleach type photosensitive material, a color reversal type photosensitive material, or a diffusion transfer type photosensitive material, a processing bath suitable for each must be provided. Furthermore, even among the same type of photosensitive materials, there are those with high photosensitivity and those with low photosensitivity.

Therefore, there is a need for a means by which the user will never make a mistake when selecting such a wide variety of photosensitive materials.

In addition to preventing users from making mistakes, it is also necessary for manufacturers to develop reliable means for preventing false detections that are convenient for mass production and at low production costs.

In other words, if the purpose of use is clearly displayed and memorized by the input capotan, the device will be structured to accept only the loading of photosensitive materials that meet that purpose, and the device itself will be adapted to that purpose. Unless a structure is established in which filter work, exposure amount switching, developing means switching, etc. can be activated immediately, a lot of expensive photosensitive materials and time will be wasted.
This completely defeats the purpose of creating color proofs to streamline plate inspection and inspection work, as well as the idea of turning color proofs into posters.

The present invention solves the above-mentioned problems and provides a compact contact exposure type color proofing system that can form images with high halftone dot reproducibility, that is, high gradation, for halftone originals, and is easy and reliable to operate in a bright room. The purpose is to provide equipment.

[Means to solve the problem]

The purpose of this is to open and close the light-tight relationship between the two rooms by opening and closing the light-tight curtain installed in the boundary area between the first room and the first room, where the light-tight relationship between the two rooms is turned on and off by means of a light-tight cover that can be opened and closed. A second chamber is provided in the first chamber, a means for overturning the original and the photosensitive material using a transparent cover sheet, and an exposing means are provided in the first chamber, and the long-wound photosensitive material in the cartridge loaded in the main-wrap loading chamber provided adjacent thereto is fed out. Automatically flatten sheet-like photosensitive material that is cut to a predetermined length! a means for positioning and placing a W document in the boundary area of the first chamber through a light-shielding curtain; Close the light-shielding cover and open the stack, advance the photosensitive material mounting table to the boundary area, overlap the photosensitive material, the document, and the transparent cover sheet, and then squeeze the linear curved surface to perform close suction. Further, at a predetermined position f of the cartridge, a sensitive material type display means is provided in which grid patterns of approximately 30 square meters are arranged in a row at a pitch of approximately 30 mm, and detection means corresponding to each grid pattern are arranged at a pitch of 30 mm. A color proof production device that is characterized by:

〔Example〕

One embodiment of the color proof production apparatus of the present invention is shown in FIG. 1 as a front view, FIG. 2 as a side view, FIG. 3 as a top view, FIG. 4 as a partial sectional view, and FIG. This will be explained with reference to FIG. 6, which is a sectional view of the roller portion and a partially enlarged view of the second factor. However, the present invention is not limited to this example.

Before creating the actual printing plate using each separation mesh original film color-separated into Y version, 1M version, 0 version, and black version, the color proof production device checks whether there are any mistakes in the layout of the original film or if there are any color differences. This is a device for inspecting whether there are any errors or errors in characters, etc., and obtaining a proof (color proof) for checking the finish of printed matter in advance, and for positioning one or more sheets of the above-mentioned decomposition film. Proofing materials using color photosensitive materials (color proofs) are produced by successively contacting and exposing the film to color light-sensitive materials using color-sensitive light that corresponds to the original film.
By creating the original, it is possible to discover errors in the original document, check the print quality in advance, and make it possible to redo the corrections made to the original document.

The main body 100 has a document table 140 having an upper surface 141 and a lower surface 142 on which a document positioning bin bar (registration bin) 143 is installed on the upper side of the main body frame 101 supported by legs +02. The light-shielding cover 120 that made it possible to form a dark room as one room is the hinge 1
2+ and a gas damper 122 so that it can be opened and closed.

Further, an exposure section 300 for scanning and exposing the contact exposure surface of the document table is provided in the first chamber. At the center of the exposure section, one or more (three in this embodiment) tubular light source lamps 302A are installed.
, 302B, and 302C are provided surrounded by a drum-shaped internal reflecting mirror 306 fixed to a housing 316 and a transmission window 304. Then, on the outside, a polygonal cylinder 3 is arranged concentrically at the center and a filter of blue (B), green (G), red (R), gray (ND), etc. is arranged on each cylinder surface, making it rotatable. The filter surface and the transmission window are arranged so that the filter surface and the transmission window face the contact exposure surface. A slow-closing plate 308 and a rotary linenoid 3 that operates the slow-closing plate 308 are located below the slow-closing plate 308.
12, the exposure window or slit 310, and the honeycomb board 342 attached and fixed to the light source side of the sleeve i. are housed in a holding frame 341 provided with a housing 316.

The exposure unit 300 is configured to be able to run on the rails 317A and 317B in the lth direction of scanning.

Therefore, it is necessary to suppress the influence of the diffused light as much as possible by narrowing down the light collimated by the light diffusing plate using a pick-up filter. Therefore, the cam board must always be located on the opposite side of the slit from the photosensitive material. Further, the honeycomb board may be held in contact with the slit or may be held apart, but it is preferable to keep a certain distance from the photosensitive material. The distance between the honeycomb board and the photosensitive material is 30+xm or more. The thinner the slit is, the better in order to suppress the influence of diffused light, and the preferred width of the slit is less than 30 m east.

A photosensitive material mounting section 200 is provided inside the main body frame 101 as a second chamber. And the sensitive material mounting table 201 is
Although not shown, it is driven by a motor so that it can move up and down.

On the other hand, the light shielding curtain 240 has chains 2 running symmetrically on both sides.
It is held on both sides by link attachment 1-247 of 46 and is pasted on bars 249 provided at equal intervals.
The front end and the rear end of the molding are respectively the leading rods 2 of the rods.
49A and rear rod 249B with adhesive or screws 249
It is fixed with C. Incidentally, in this example, the light-shielding curtain used was one whose core material was Tetron cloth and whose surface was coated with nitrile rubber resin. This light-shielding curtain has elasticity, although slightly, and sufficiently absorbs the phenomenon that the curtain trajectory becomes slightly longer when the forming mold passes through the sprocket 241, thereby making the operation smooth. The light shielding curtain 240 has an area that is at least larger than the cross section of the moving area of the photosensitive material mounting table.

In this embodiment, as described above, the opening 144 is closed late while the light shielding curtain 240 is held by many rods 249. Therefore, the light-shielding curtain does not droop and almost maintains its flatness, making it easier to place the document.Furthermore, as mentioned above, the good flatness provides a high light-shielding effect, and the opening There is no need to make the area of the light-shielding curtain so large compared to the area, and complete light-shielding is maintained.

and tin rockets 241, 242A, 243.244
The window (opening) 144 when the photosensitive material mounting table 201 is inserted into the document table 140 is opened or closed by reciprocating the roller chain 246 which is hung and driven by a motor (not shown). becomes possible.

Such a light-shielding curtain 240 runs on a surface slightly lower than the lower surface 142 of the document table, that is, the boundary area between the first chamber and the second chamber, so that the light-shielding curtain 240 closes the 12 chambers in which the photosensitive material mounting table 2 is housed. The first chamber is provided so as to be able to switch between forming and releasing light tightness to the first chamber.

A long roll 402 of silver halide color photosensitive material is stored in the 40th car ridge, and with the tip of the photosensitive material about 200 mm protruding from the drawer opening, the color proof making device is opened! Original roll loading chamber 403 of the photosensitive material loading section 400 of 1100
The lid 404 opened with the hinge 405 is closed so that it can be clamped with the clamper 406.

The cartridge 401 has the shape of a rectangular parallelepiped as shown in the perspective view of FIG. 7, and at its corners there are five 30 mm square patterns painted in white or black as shown in FIG.
Labels 407 arranged at a pitch of 30 mm are attached to predetermined positions at the corners of the rectangular parallelepiped cartridge 401.

Furthermore, as shown in FIG. 1, pattern detectors 408 are provided on the back wall of the original volume loading chamber at positions corresponding to each pattern of the labels attached to the cartridges. A reflective type detector using a light emitting diode and a photodiode is provided as the detector, but the detector is not limited thereto.

Further, although the pattern is made of white and black, the pattern does not need to be black as long as it can absorb the reflected light from the light emitting diode. Similarly, white does not have to be white as long as it can reflect the reflected light from the light emitting diode.

In the pattern shown on this label, one square is 30 mm square, and each square is made up of 5 bits arranged at a pitch of 30 QIIll. The 32 types of photosensitive materials can be distinguished by distinguishing them in black and white as described above, and by attaching labels with arbitrary combinations of patterns from 0 to 5 bits to predetermined locations on the cartridge. can be reliably identified using a detector.

As shown in Figure 9, there are currently 24 types of photosensitive materials that can be displayed in 5 bits, including positive type, negative type, film, and photographic paper, and we believe that even if the number of types increases in the future, we will be able to handle this with ease. Recognize.

As mentioned above, this label is attached to a specific location on the cartridge, such as the corner shown in Figure 7, but if you use a labeler to attach it, you must be prepared for an error of ±2 mm. It may happen.

Even if such a phenomenon occurs, the label pattern must not be misidentified.

Moreover, the bending of the label may be further shifted. However, the diameter of photodiodes and light emitting diodes is lOa.
+m or less, and there is no need to worry as the mounting on the back wall of the main volume loading chamber is achieved with an accurate 30mm pitch.

Under such conditions, considering the safety factor, it can be said that a label pattern that can be used without false detection is one in which 30IlIff1 squares are arranged at a pitch of 30 mm.

As a result, the means of this embodiment was adopted as a means for accurately determining whether or not an appropriate photosensitive material is being used without increasing production costs.

In this embodiment, 5 bits are used, but even if 6 bits are arranged in a pattern of the same size and pitch, many (64 types) of photosensitive materials can be discriminated without malfunction.

The leading end of the long roll of photosensitive material is sent out by a nipping roller 511, and the leading end is aligned at a cutter section 510 and stands by. Furthermore, the fixing base 52 is
The tip is fed to the left end of the photosensitive material 7 and is sucked by a suction cup 523, and a traveling head 522 having the suction cup guides its rollers 525 and 526 to the traveling rails 521 on both sides, and the predetermined length of the photosensitive material is Move to the position to be measured and stop. The photosensitive material is cut by the canter section 510 and further moved so that the tip of the photosensitive material is positioned at a predetermined position on the photosensitive material mounting table 201. After the suction of the suction cup of the traveling head is removed, the traveling head 522 returns to its original position.

Here, the running gear 522 has solenoids 535 attached to both sides via brackets 534, and its movable iron core 53
A frame 531 is fixedly attached to 6, and a rad 522,
A suction cup 5 coupled to the hose 524 on the frame 531
23 is attached, and the holding vibrator 537 of the suction cup is provided in a guide hole drilled in the M head and frame, and is fixed to the frame in the thrust direction, and the head is slidable along the hole. It floats above the exposure table surface via a helical spring 532 that is installed between the traveling head 522 and the frame 531.

When the solenoid is energized and the suction valve is opened, the suction cup descends to adsorb the photosensitive material, and then when the solenoid is de-energized, the suction cup lifts up and the photosensitive material is conveyed.

In this way, when the photosensitive material is transported onto the photosensitive material mounting table 201 and placed on the photosensitive material mounting table 201, suction pressure is applied to the suction hole made on the photosensitive material mounting table by driving the blower 204 through the flexible hose 205. As a result, the photosensitive material is tightly fixed onto the photosensitive material mounting table.

This tightly fixed state is maintained until multiple exposures are completed and the photosensitive material begins to be transported to the developing section.

Furthermore, in this state, the light-shielding curtain 240 is in a light-shielding position, so that the second chamber in which the photosensitive material mounting table is located remains in a state where a dark room is formed.

Here, the upper light-shielding cover 120 is peeled off to brighten the first chamber with outside light, and the registration lane Yonpin (pin bar) 143 set on the upper surface part 141 is attached to the disassembled net original (black version and YMC).
One of them, for example, the Y version, or Y.

Most of the fg product is placed on the light-shielding curtain made up of the light-shielding curtain 240 and the rod 249 that holds it. Leave it in the t position.

In this state, the light-shielding cover 120 is closed to make the first room a dark room and light-tight, and the light-sensitive material M and the mounting table are raised slightly below the light-shielding curtain, and then the light-shielding curtain is moved to open it. Then, in a state where both the first room with the upper surface of the document table and the second room with the photosensitive material placement table become a common dark room, the photosensitive material placement table 201 is raised to match the exposure surface, that is, the separation screen original reference surface. At this time, the second
The airtight gasket 201c provided on the abutting surface 201b around the photosensitive material ttC table in the chamber is in close contact with the lower surface 142 of the document table 140 in the first chamber, and the insertion surface 201d of the photosensitive material table into the opening 1.44. The gap created by the flow path i'i 20
4, and airtightness between the document and the photosensitive material sandwiched between the document table surface, the photosensitive material mounting table surface, and the transparent cover sheet is maintained.

That is, one end of the transparent cover sheet 275 is fixed to the plate 124 of the light-shielding cover 120, which is removably provided near the opening when the light-shielding cover 120 is opened and closed, and the other end is fixed to the first chamber under the hinge 121. Tension member 2 provided in
It is fixed at 77.

This tension member may be a simple spring, but in this embodiment, a torsion bar is fixedly provided, and a cover sheet is wrapped around it one turn and fixed.

The torsion bar is biased by a torque spring in a direction in which the cover sheet is rolled up.

By doing this, it is possible to absorb the phenomenon that the straight line distance between the fixing positions at both ends of the transparent cover sheet is geometrically different when the light shielding cover 120 is opened and closed, or in the middle of the process. It is possible to keep the sheet in a nearly flat state and in a state in which tension is applied evenly and appropriately.

When the light-shielding cover 120 is closed with such a transparent cover sheet set, both ends of the cover sheet are at a position slightly lower than the surface of the document table, so it is inevitable that the document on which the document screen film and photosensitive material are placed will be exposed. The transparent cover sheet is now pressed against the table and the surface of the photosensitive material mounting table.

In this state, the squeeze roller 276 squeezes and removes the air between the transparent cover sheet and the document table using a depressurizing blower or a vacuum pump, thereby ensuring a high degree of close contact between the transparent cover sheet and the document table.

In this embodiment, the squeeze roller is provided in the exposure section 300, and when the light-shielding cover 120 is covered, the exposure section 300 moves back and forth.During the forward movement, neither squeezing nor exposure is performed, and during the backward movement, the squeeze roller 276 is attached to the bracket. 2
Draw lever 282A that rotates around the rotation axis of 83
The movable iron core of the solenoid 284 acts on the portion 282B of 282B by applying electricity, and the roller is pressed onto the transparent cover sheet 275 to complete the squeeze.

When the roller 276 is not being squeezed, it is de-energized, the solenoid is not activated, and the spring 286 is activated to keep the squeeze roller floating above the W document placement surface or the document table surface.

A window is opened in the cover sheet near the area where the transparency burnout 275 touches the registration bin 143, and a stretchable rubber sheet 278 as shown in FIG. It's dark.

When the transparent cover sheet 275 is covered, the surface of the cover sheet is the same as that of the registration bin I.
This is to prevent it from being deformed or torn, and to allow the suction decompression effect to be achieved without any problems when suction is applied.

Also, cleaning the transparent cover sheet 275 is important, and the plate 124 to which one end of the sheet is fixed is attached to the light shielding cover 120
This makes it easy to wipe off dirt on the front and back surfaces by removing it from the camera.

Further, the light shielding cover can be opened and closed smoothly and easily since both ends of the gas spring 122 are pivotally fixed to the bracket 126 of the main body and the bracket 127 of the light shielding cover.

In any case, when the squeezing is completed, the blower 206 as a pressure reducing device operates to operate the suction holes 201f1. m-connected suction hose 207
The air that is sucked through the flow path groove 204 and interposed between the upper surface of the photosensitive material mounting table and document table and the cover sheet is sucked, and the photosensitive material, each original document, and the cover sheet are stacked to form a flat surface. is held in close contact with the However, the suction hole 2
01f may be a hole drilled in the original table.

At this time, as shown in FIG.
The dimensional relationship between the abutting surface 201b, the airtight bar 7201c attached thereto, and the lower surface 142 of the stacking table 140 is adjusted so that the upper surface 201a of the photosensitive material mounting table 2 and the upper surface 201a of the photosensitive material mounting table 2 are on the same plane. By doing this, air can flow smoothly between the transparent cover sheet, the document table and the photosensitive material mounting table through the flow channel grooves, and the cover sheet, the document and the photosensitive material can be placed in the correct planar shape. The stability of:
Close contact is achieved. Further, the sensitive material mounting table may be located at a slightly lower position than the document table.

In this state, the exposure section 300 is moved again to the guide rail 31.
7'A and 317B to perform scanning exposure, and the first color exposure using the filter is completed. Of course, at this time, the static roller 276 is de-energized and floats to prevent it from interfering with the exposure.

Next, in order to perform a second image exposure using a filter of a different color, the photosensitive material mounting table is lowered to a position slightly below the traveling path of the light-shielding curtain, and air is blown there with a nozzle, or the blower 2
06 to the blowing side, blowing air into the flow path @204, and closing the light shielding curtain, the original and the photosensitive material can be easily and completely separated. The blowing by the blower and the lowering of the photosensitive material mounting table may be performed in the opposite order or at the same time.

When the light-shielding cover 120 is opened, the first room becomes a bright room, but the second room is light-dense compared to the first room, forming a dark room.

At the same time, the transparent cover sheet 275, whose one end is fixed to the light-shielding cover 1.20, is lifted diagonally upward as the light-shielding cover is opened, and the next document film can be easily loaded.

In this state, register the second 'fK draft (black version and one of Y, M, C, e.g. M version, or one of Y, M, C, black version, or more than one of these). After setting it on the ration pin and covering it with a light-shielding cover, open the light-shielding curtain and raise the stacking stage W by one height. The transparent cover sheet is automatically covered again, and the squeeze sheet attached to the exposure section 300 is Squeeze is performed by reciprocating the rollers, applying suction. Close exposure is performed and the second exposure is completed.

Similarly, the third manuscript (black version and one of Y, M, C, e.g., C version, or one of Y, M, C, black version, or more than one of these) and its corresponding filter The same procedure is used to perform the third exposure. In this way, exposure is repeated one to several times as necessary.

Finally, the photosensitive material mounting table is lowered to the lowest position, the adhesion of the photosensitive material is released by releasing the suction, and the tip of the photosensitive material is fed to the nipping roller 552 by the running of the suction cup 523.

The photosensitive material whose leading end has reached the nipping roller 552 is sent to the developing processing section 600 on the left. When an internal latent image type direct positive photosensitive material is used, fog exposure is applied by the second exposure section 350 while the material is being conveyed through the color developing tank 6. The photosensitive material then passes through a bleach-fixing tank and a stabilizing tank, is dried while being transported to a drying section 680, and is collected at the left end of the apparatus after being developed.

Incidentally, as the exposed photosensitive material begins to be conveyed through the development processing section 600 and the photosensitive material mounting table comes down, the subsequent photosensitive material is conveyed onto the photosensitive material mounting table 201 and is measured and measured by the cutter section 510. The process of cutting and closely setting is repeated as described above.

When using an internal latent image type direct positive, the photosensitive material is the second
Although exposure is necessary, when using a negative color photosensitive material or a solarization type direct positive photosensitive material, the second exposure is not necessary and the light remains off. In addition, when using other dye-bleached color photosensitive materials, color reversal photosensitive materials, diffusion transfer photosensitive materials, etc., it is possible to perform exposure and development processing in the same system by providing processing baths suitable for each type of material. .

Of course, for exposure to direct positive photosensitive materials, a black plate is superimposed on each Y plate, 1M plate, and C plate, and B is used for the Y plate and black plate, G is used for the M plate, and black plate is used. The C plate and the black plate are exposed to light three times using corresponding R filters, but when exposing normal negative color photosensitive materials, each Y plate, 1M plate, and C plate original are placed on the photosensitive material. Expose 3 times using B filter for Y plate, G filter for M plate, and R filter for C plate] by layering them separately, and then layering the black plate for the fourth time and apply ND filter, color correction if necessary. Exposure is performed by matching color filters for each color, or triple exposure of B, G, and R is performed.

Furthermore, if necessary, in addition to the above-mentioned separate color exposures, further exposures using light corresponding to different color separations may be added to produce basic colors suitable for the printing ink. Further, in order to blend light equivalent to different color separations in advance, processing such as blending BGR colored light or exposing using a combination of filters may be performed. Similarly, in order to reproduce colors that are compatible with special inks other than standard inks such as Y, M, C, and black, which are generally referred to as special colors, repeated exposure, blending of colored light, or combination of filters may be performed. In this case, it may be necessary to use a decomposition net film called a special color plate, or to combine the decomposition net film for special colors with other films, and in some cases, it may be necessary to stack several sheets of other decomposition net films. It is necessary to perform contact baking.

There are two types of photosensitive materials: those with high sensitivity and those without. When using a photosensitive material with low sensitivity, the exposure area 30
A plurality of light source lamps 302 of the 0 polygonal tube 301 may be provided and a large number of them may be turned on to make the exposure more powerful.

In addition, by using the measures of lowering the scanning speed and the measures of making the opening/closing of the exposure window 310 variable, in combination or alone, it is possible to perform high-quality exposure without worsening the reciprocity law failure condition.

〔Effect of the invention〕

According to the present invention, the color proof making device can be operated in a bright room and is compact, and furthermore, the color proof making device of the present invention can be used without fail to select the photosensitive material that suits the purpose of the user among various photosensitive materials each having its own characteristics. It is now possible to send it into a device to create accurate color proofs. In the unlikely event that a photosensitive material with characteristics incompatible with the intended purpose is loaded, the device of the present invention will not operate and the device will issue a warning to that effect, allowing prompt action to be taken to create accurate color proofs. This has made it possible to avoid a huge amount of waste of photosensitive materials and a huge loss of time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of one embodiment of the color proof production apparatus of the present invention. FIG. 2 is a side view of one embodiment of the color proof production apparatus of the present invention. FIG. 3 is a top view of the color proof production apparatus shown in FIG. 2. FIG. 4 is a side sectional view showing the positional relationship between the document table and the photosensitive material mounting table. FIG. 5 is a sectional view of the exposure section and the squeeze roller section. Figure 6 is a partially enlarged view of Figure 2. FIG. 7 is a perspective view of a cartridge containing long-wound photosensitive material. FIG. 8 is a dimensional diagram of a label with 5-bit detection patterns lined up. FIG. 9 is a comparison diagram between the pattern drawn on the label and the symbol representing the type of photosensitive material. 100...Color proof creation device main body 120...
Light-shielding cover 121...Hinge+24...Plate 140...Document stand 143...Register storage 3
Binbin (binbar) + 44...window 2
40... Light shielding curtain 275... Transparent cover sheet 276... Squeeze roller 277... Tension member (torsion bar) 284
... Solenoid 282A ... Swing lever 3
00... Exposure section 400... Sensitive material device X section 401... Cartridge 402... Long roll 403... Original roll loading chamber 407... Label 408... Pattern detector

Claims (1)

[Claims] The light-tight relationship between the two rooms is turned on and off by opening and closing a light-tight curtain provided in the boundary area between the first room and the first room, in which light-tightness with outside light is turned on and off by a light-tight cover that can be opened and closed. Two chambers are provided, and the first chamber is provided with a means for overturning the original and the photosensitive material using a transparent cover sheet, and an exposing means, and the long-wound photosensitive material loaded in the cartridge is fed into a predetermined amount in the adjoining main-wound loading chamber. A photosensitive material mounting table is provided in the second chamber, which automatically places and fixes the sheet-like photosensitive material to be cut into lengths in a flat shape and allows the surface of the photosensitive material to be moved to the boundary area. means for positioning and placing the original in the boundary area through a light-shielding curtain, closing the light-shielding cover and opening the curtain, and advancing the photosensitive material mounting table into the boundary area to place the photosensitive material, the original, and the transparent cover sheet; The cartridge is overlapped, and has a means for performing close suction by squeezing the overlapping surfaces, and has a grid pattern of approximately 30 mm square at a predetermined position of the cartridge.
A color proof production device characterized in that sensitive material type display means are arranged in a row at a pitch of 0 mm, and detection means corresponding to each grid pattern are arranged at a pitch of 30 mm.