JPH02158741A - Scanning type contact exposure device - Google Patents

Abstract

PURPOSE:To exposure on the return path of a light source unit and to shorten the length of time per exposure by integrally composing a squeeze roller and a light source. CONSTITUTION:A scanning type contact exposure device is provided with the light source unit 114 integrally composed of the exposure light source 110 for exposing a photosensitive material 102 and the squeeze roller 116 for removing air in order to adhere and fix an overlay sheet 106 to a photosensitive material holding base 108. Therefore, air in the overlay sheet 106 is removed on the outgoing path of the light source unit 114, and exposure is performed on the return path after the photosensitive material 102 completely adheres to a color film 104. This shortens the length of time per exposure.

Description

[Detailed description of the invention] Industrial application fields> The present invention relates to a scanning type contact exposure apparatus.

More specifically, the present invention relates to a scanning vEIn exposure device that is suitably used for plate inspection (pre-proofing) in photolithography, and that brings a color plate film and a color photosensitive material into close contact with each other and scans and exposes the photosensitive material.

<Prior Art> Many color printed materials are used for various books, catalogs, magazines, flyers, posters, etc.

In normal color printing, cyan (hereinafter referred to as C), magenta (hereinafter referred to as M), yellow (hereinafter referred to as Y),
In the case of offset printing, 23 printing plates are created corresponding to the three primary colors of the three primary colors (hereinafter referred to as "BK"), and each color ink is overprinted on the main paper using this master plate. By doing this, various color printed matter are produced.

To make such a color printing original plate, the following method is usually adopted.

Images such as paintings and photographs are C, M%Y by color scanner.
The color is separated into the three primary colors of BK and black, and a color-separated four-dot negative film is produced. on the other hand,
Characters, ruled lines, figures, logotypes, etc. are created using a phototypesetting machine, drawing machine, etc., and then laid out (
Negative film of the characters and pictures is produced using a plate-making camera or the like.

Next, C and M produced in this way.

By multiple-exposure and compositing negative films corresponding to Y and BK and letters etc. using masks etc., 4 halftone dots corresponding to C, M, Y and BK, called lith film, and letters and paintings are synthesized. Produce a color plate positive film containing the

Then, using these four color positive films, a printing original plate is made as described above, and a color printed matter is printed.

By the way, in such color printing, proof printing is performed to obtain final approval from the ordering party (client) before the actual printing. The purpose of proof printing is to provide a sample of the actual printing, so an ink color proofing method is used. The color proofing method using ink includes proof printing using a proofing machine or proof printing using a printing machine.

All of these ink proofs are obtained by actually making a printing plate using the above-mentioned color plate positive film and using this to create several color prints using a proofing machine or printing machine. This is a method for proofreading color printed matter. In this method, after actually producing the original printing plate,
This method is often used because it is a method in which color prints are actually produced and proofread, and inspections can be performed using prints that are almost the same as the target prints, but as mentioned above, usually four It is a method that requires a great deal of time, effort, and cost since it is necessary to prepare an original plate and perform four-color overprinting.

Generally, the purpose of color proofing is to prepare a color sample for actual printing, and especially in the first proofing, to understand the client's intentions, proof printing using a proofing machine is the mainstream in Japan.
It is used for re-examining and instructing film plate making, such as corrections, layout corrections, and corrections.

On the other hand, plate inspection is basically a check to see if these corrections were made correctly at the plate-making stage, and is an internal check.In particular, text correction is the main body, and in many cases blue printing (monochrome diazo copy) etc. However, recently not only photographs but also text and illustrations are often colored, so full-color inspection is performed using a proofing machine to check for corrections, and simple photographic and electronic proofreading methods save time. It is used in this field for the purpose of cost reduction.

There is also a method of checking the version before the first school, but 100% of
Since there are many people who have to give instructions for repairs, some specialized plate making companies carry out this process as part of their process control, but it is not carried out on a large scale.

One of the simple calibration methods is to directly print a color plate film onto a diazo photosensitive material to form an image, and then calibrate this image. With this method, plate inspection can be performed very easily, but since the resulting image is a so-called blueprint image, the shapes of characters, figures, etc. can be easily proofread, but the color tone of the resulting printed matter is etc. cannot be calibrated.

In addition, as an electronic proofing method, the image of the color plate film is
There is a method for performing inspection color separation by reproducing it on RT, or recording the color film before correction on video film, etc., for inspection,
A method has also been proposed in which, after correction, the uncorrected color plate film and the corrected color plate film are superimposed and reproduced on a CRT, and the corrected areas are inspected for plate inspection. According to this method, a color image that approximates the intended printed matter is reproduced on the CRT, corrected areas are extracted, and plate inspection can be performed. However, the color tone of the image obtained on the CRT is significantly different from that obtained by mechanical proof printing using ink, and furthermore, it is difficult to keep a hard copy on hand.

Photographic plate inspection methods are widely used as a method to overcome these drawbacks and easily produce hard copies that are close to the intended printed matter for plate inspection. Moreover, since it is possible to make hard copies that are close to the final printed matter and perform plate inspection, it is possible to multiple-expose various silver salt photographic materials with color plate film, and then wet-process the materials. , a method of producing a color photograph that is almost similar to the intended printed matter and performing plate inspection is attracting attention.

In the case of the positive-positive method, basically each color film corresponding to C, M, and Y is overlaid with a color film positive film corresponding to Bk. Because the reproduction is not good, the color film corresponding to Bk is always exposed in layers.), C
, M, and Y, and a photosensitive material is sequentially exposed to each color positive film with Bk layered thereon using a predetermined light source. Next, the exposed photosensitive material is developed,
It processes runners, etc., and produces color photographs as color proofs.

The color proof obtained in this way is almost similar in appearance and shape to the intended printed matter, so it can be inspected very well, and it is also possible to keep the color proof as a hard copy at hand. You can also do it. Moreover, according to the above method, producing a color photograph as a color proof is much easier than producing a proof.

<Problems to be Solved by the Invention> In a method in which a sheet of silver salt photographic light-sensitive material is subjected to multiple exposure using this color plate film, wet processing is performed to produce a color photograph as a color proof, and plate inspection is performed. Exposure methods include camera-type exposure methods that expose the photosensitive material at the same magnification using various imaging optical systems, and contact exposure methods that expose the photosensitive material and color plate film in close contact with each other. However, a method using contact exposure is preferable because it has good resolution and color reproducibility, and it is possible to obtain a color proof that is closer to the final printed matter.

In this case, the color plate film for photolithography is standard A3 to B2.
Since many of them are large in size and it is difficult to perform one-shot exposure, exposure is generally performed by scanning exposure.

A method for closely observing the photosensitive material and color plate film in a scanning type contact exposure device that performs such scanning exposure is usually to place the photosensitive material at a predetermined position on the photosensitive material that is suctioned and fixed onto the photosensitive material holder. Color plate films are layered, and the photosensitive material and color plate film are covered with a transparent film-like sheet called an overlay sheet.

Next, the overlay sheet is suctioned by a suction groove formed on the photosensitive material holding table surrounding the photosensitive material placement section, and the overlay sheet is suctioned and fixed to the photosensitive material holding table, thereby bringing the photosensitive material and the color plate film into close contact. let

Then, the air in the overlay sheet is removed using an air release device such as a squeeze roller, and the overlay sheet is placed in close contact with the photosensitive material holding table, thereby ensuring that the photosensitive material and color plate film are in close contact with each other. .

Thereafter, the photosensitive material and the overlay sheet are closely viewed on a photosensitive material holding table, and after the photosensitive material and color plate film are brought into close contact with each other, scanning exposure is performed using a movable light source.

Therefore, in a normal scanning type contact exposure apparatus, it is necessary to bleed air from a squeeze roller or the like during each exposure, and to move the apparatus and exposure light source back and forth one by one.
As mentioned above, when inspecting the color positive film, 3F of 0, M, and Y versions are superimposed on Bk! In order to expose the next color plate film, the light source and air bleed device return to the home position for the next color plate film exposure. ).

However, as mentioned above, many of the color plates used in photoengraving are large in size, and therefore, with the conventional film in which both the air bleed device and the exposure light source move back and forth once, it takes a long time for one exposure. Moreover, as mentioned above, three exposures are usually required to produce one color proof using this method, so the time required for the second exposure becomes a big problem.

In addition, the conventional scanning type contact exposure apparatus requires two types of drive systems: an exposure light source and an air bleeder, making the apparatus complicated and expensive.

An object of the present invention is to solve the above-mentioned problems of the prior art, and to reduce the time required for one exposure including air release of the photosensitive material, color plate film, and overlay sheet.
An object of the present invention is to provide a scanning type contact exposure device with a simple mechanism.

Means for Solving the Problems> In order to achieve the above object, the present invention provides at least one color plate film that is closely stacked on a color photosensitive material,
A scanning contact exposure apparatus that scans and exposes the photosensitive material using a light source that can move 8 times, comprising: an overlay sheet for covering the photosensitive material and the color plate film; and an overlay sheet for covering the photosensitive material and the color plate film. and a squeeze roller for promoting the close fixation of the photosensitive material and the color plate film onto the photosensitive material holding table by the overlay sheet, The present invention provides a scanning type contact exposure apparatus characterized in that a squeeze roller and the light source are integrally configured.

<Operation of the Invention> Since the scanning type contact exposure apparatus of the present invention has the above-mentioned predetermined configuration, the light source unit that integrally comprises the squeeze roller and the light source only needs to be reciprocated once, that is, in the outgoing path of the light source unit. Since the air in the overlay sheet can be removed and exposure can be performed on the return trip after the photosensitive material and color plate film are completely in contact with each other, it is possible to remove the air from the overlay sheet and perform exposure on the return trip. In comparison, the exposure time per exposure can be shortened.

Moreover, compared to the conventional system which requires a scanning system for each of the air bleeder and the light source, air bleed and exposure can be performed using a single scanning system for scanning the light source unit. It can be made simple.

<Embodiments> Hereinafter, a scanning type contact exposure apparatus according to the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

FIG. 1 shows a preferred embodiment of the scanning type contact exposure apparatus of the present invention.

A scanning type, contact exposure apparatus 100 of the present invention shown in FIG.
In the figure, two color positive films 10 are attached to a positive color photosensitive material 102, one corresponding to Bk and one corresponding to one of C, M, and Y, as shown by dotted lines in the figure.
The overlay sheet 106 covers the color plate film 104, and the photosensitive material 102 is placed on the photosensitive material 102, and the photosensitive material 102 and the overlay sheet 106 are tightly fixed together by suction. The material holding table 108 and the light source 1 for exposure that exposes the photosensitive material 102, which is the most characteristic part of the present invention.
1O (see FIG. 2), and a light source unit 114 that integrally comprises a squeeze roller 112 for removing air for tightly fixing the overlay sheet 106 to the photosensitive material holding table 108.

Further, in the example shown in FIG. 1, the scanning type contact exposure apparatus 100 is provided with a positioning pin stand 118 having a positioning pin 116 for positioning the color plate film 104, and the photosensitive material holding stand 108 is raised. At the time (the position shown in FIG. 1), it is inserted into the recess of the photosensitive material holder 108.

The photosensitive material holding table 108 is used to arrange the photosensitive material 102 and to tightly fix the photosensitive material 102 and the overlay sheet 106 by suction. A suction hole (not shown) is formed, and a suction groove 120 for suctioning and fixing the overlay sheet 106 is formed surrounding the area where the photosensitive material is placed.

In the illustrated example, the entire surface of the photosensitive material 102 is sucked by the suction holes, and the overlay sheet 106 is sucked by the suction grooves 10.
0, it is sucked from the surroundings and brought into close contact with the photosensitive material holding table 108. Note that the suction groove 120 is for suction through an opening 122 formed in the suction groove.

In the scanning type contact exposure apparatus 100 of the present invention, there is no particular limitation on the method of suctioning the suction hole and the opening 122, and any normal method using a vacuum pump or the like may be used.

The photosensitive material holding table 108 can be lowered, and when the photosensitive material 102 is transported and fixed, the color plate film 104 is
When replacing the lamp, it lowers and is completely blocked from light.

The positioning pin stand 118 for arranging the color plate film 104 is fixed by known means (not shown), and remains at the position shown in FIG. 1 even when the photosensitive material holding stand 108 is lowered. For this purpose, a recessed portion for inserting a positioning pin stand 118 is formed in the photosensitive material holding stand 108.

The overlay sheet 106 includes the photosensitive material 102 fixed to the photosensitive material holding stand 108 and the positioning pin stand 11.
8, it covers the color plate film 104 superimposed on the photosensitive material 102, and is brought into close contact with the photosensitive material holder 108, thereby removing the photosensitive material 102 and the color plate film 1.
04, and protects the photosensitive material 102 and the color plate film 104 from being misaligned when air is removed by a squeeze roller 112, which will be described later.

The overlay sheet 106 has both ends attached to the belt 124.
and supported by rollers 126 and 128. Here, in the illustrated example, the photosensitive material holding stand 10
8 is lowered, the overlay sheet 106 can be reversed by rotating rollers 126 and 128.

In the scanning type contact exposure apparatus 100 of the illustrated example, during standby, as shown in FIG. The photosensitive material 102 is conveyed to the photosensitive material holding stand 108 by a known means (not shown) and fixed by suction, and the color plate film 104 is placed on the positioning pin stand 118.

Next, the overlay sheet 106 is reversed, and the photosensitive material holding table 108 is raised to the state shown in FIG.
The overlay sheet 1.6 is closely attached to the photosensitive material, and the photosensitive material 102 and the color printing film 104 are attached.

As mentioned above, the light source unit 114 is the most characteristic part of the present invention, and includes the exposure light source 110 (see FIG. 2),
It is constructed integrally with a squeeze roller 112 that bleeds air from the overlay sheet 106.

FIG. 2 shows a schematic cross-sectional view of the light source unit 114.

The light source unit 114 includes a linear exposure light source 110 and a SELFOC 1.・Nsuaray (Nippon Sheet Glass■
A light-shielding box body 13 and an equal-magnification lens array 130 manufactured by
At the bottom of the roughly equal-magnification lens array 130, there is a filter 134 that can be slid and switched.
32. In the example shown in FIGS. 1 and 2, arms 136 that support the squeeze roller 112 in a vertically movable manner are arranged on both sides of the box 132, and the squeeze roller 112 is attached to the tip of the arm 136. Rotatably supported.

Further, the light source unit 1
A drive screw 138 as a driving device for scanning 14, a traveling nut 140, and a guide rail 142 and guide pipe 1 as a guide.
44 are arranged.

In the scanning type contact exposure apparatus 100 of the present invention, by integrally configuring the light source unit 114 with the light source 110 and the squeeze roller 112 in this way, the light source unit 114 can be moved back and forth just once to remove the overlay sheet 100.
6 air bleeds and exposure of the photosensitive material 102 can be performed, and - times scanning exposure can be performed quickly.

Furthermore, there is no need to provide separate scanning drive sources for the light source 110 and the squeeze roller 112, and they can be integrated into one, allowing the device to have a simple mechanism.

The light source 110 is an exposure light source for exposing the photosensitive material 102, and is not particularly limited, and various types such as a fluorescent lamp, a halogen lamp, etc. can be used as long as it has a sufficient amount of light to expose the photosensitive material 102. It is.

The equal-magnification lens array 130 is for converting the light from the light source 110 into parallel light.

As mentioned above, when performing plate inspection using a silver salt positive color photographic material, a color plate positive film 10 is usually used.
No. 4 is exposed in two layers: one corresponding to Bk and one corresponding to C, M, and Y. Therefore,
If the light that exposes the photosensitive material is not directly incident on the color plate film 104, the light will wrap around and cause a decrease in resolution and blurred outlines.

In the present invention, the above-mentioned SELFOC lens array (Nippon Sheet Glass Co., Ltd.
(manufactured by), etc. are applicable.

The filter 134 is for exposing the photosensitive material 102, and inside the shell are R (red), G (green), and B (additive color).
It consists of three primary color filters (blue-violet), and also incorporates an amber filter corresponding to Bk of color negative film.

The color plate film 104 normally prints an original such as a full-color photograph using the three primary color lights of R-G-B using the additive color method, as described above.
Since the color separation is extracted as the three primary color image components of M and Y in the subtractive color method and used as a halftone image, each color plate film 104 is Complementary color filters are inserted below the equal-magnification lens array 130.

Note that in order to stabilize the amount of light, it is preferable that the light source 110 is always turned on during normal use, so a shutter 146 is disposed above the filter 134 to block light when air is removed by the squeeze roller 112. Ru.

During exposure, the shutter 146 is opened as shown in FIG.
Blocks light from 0.

Arms 136 that support the squeeze roller 112 in a vertically movable manner are arranged on both sides of the box body 132, and the squeeze roller 112 is rotatably supported at the tip of the arm 136.

There are no particular limitations on the method of moving the squeeze roller 112 up and down, and methods such as combining an electromagnet and a spring, etc.
Various methods are applicable.

The squeeze roller 112 may be any roller commonly used for air removal in a normal contact exposure apparatus, and its material may be various rubbers, metals, etc., and is not particularly limited.

The light source unit 114 having such a configuration is guided by a guide vibe 144 into which a guide rail 142 is inserted as shown in FIG.
and is moved by a traveling nut 140. However, in the present invention, the means for moving the light source unit 114 is not limited to this, but includes a wire gear,
Any known extension aiding means such as a ball screw can be applied.

The drive source for the drive screw 138 is not particularly limited as long as it can move the light source unit 114 at a constant speed, but it is preferable to use a high precision motor such as a servo motor or a stepping motor.

3 and 4 are schematic diagrams showing the operation of the scanning type contact exposure apparatus 100 of the present invention.

The photosensitive material 102 is suctioned and fixed on the photosensitive material holder 108, the color plate film 104 is overlaid, covered with an overlay sheet 1o6, and the photosensitive material 102 is suctioned and fixed on the photosensitive material holder 108, and then driven by a drive source (not shown). screw 1
38 rotates, the light source unit 114 moves to a position where it can scan the photosensitive material holding table 108, the arm 136 descends, and the squeeze roller 112 moves onto the photosensitive material holding table 108.
Pressed by Next, drive screw 1
38 rotates, the light source unit 114 starts moving in the direction of the arrow in FIG. 3, and air bleeding from the overlay sheet 106 starts.

Note that the method for pressing the squeeze roller 112 is as follows:
Any known method C, such as a method using a spring or a method using the weight of the squeeze roller 112, may be used.

In the example shown in FIG. 1, the overlay sheet 106 is fixed on the photosensitive material holding table 108 by suctioning the suction groove 120 formed on the photosensitive material holding table 108 through the opening 122 (see FIG. 1). ), as a matter of course, the direction of air removal by the squeeze roller 112 is performed with the opening 122 as the end point direction. Note that, as described above, during this air bleeding, the shutter 146 moves below the equal-magnification lens array 130 and blocks the light from the light source 110.

When a predetermined period of time has elapsed after air removal by the squeeze roller 112 was completed and the overlay sheet 106 is completely brought into close contact with the photosensitive material holding table 108, the arm 136 is then moved upward as shown in FIG. The squeeze roller 112 is moved away from the photosensitive material holder 108, the shutter 146 is opened, and then the light source unit 114 starts moving in the direction of the arrow in FIG. 4, and the photosensitive material 102 is exposed.

Here, in the scanning type contact exposure apparatus of the present invention, it is natural that the scanning speed of the light source unit 114 during air removal and during exposure may be configured such that the constant speed during air removal is faster than during exposure. It is about.

In the scanning type contact exposure apparatus 100 of the present invention, unlike conventional ones, air removal from the overlay sheet 106 by the squeeze roller 112 and exposure of the photosensitive material 102 can be performed by simply reciprocating the light source unit 114 once as described above. I can do it.

FIG. 6 shows the scanning type contact exposure apparatus 100 of the present invention,
An example applicable to a silver halide photographic plate inspection device is shown below.

The plate inspection device 10 shown in FIG. 6 includes a housing 12,
It is equipped with a photosensitive material supply device 20 for feeding the photosensitive material 102 to the side of the contact device 18, and the above-described scanning type contact exposure device 100 of the present invention. Switchback mechanism 22 that temporarily holds optical material 102 and contact exposure apparatus 100 of the present invention
The photosensitive material 102 has a processing device 24 which processes the exposed photosensitive material 102 with a processing liquid to make it color proof.

Here, since the scanning type contact exposure apparatus 100 is similar to that described above, similar members are given the same numbers and their explanations will be omitted.

In the example shown in FIG. 6, the overlay sheet 106, rollers 126 and 128, and positioning bin stand 118 are arranged in a box body 50 having an opening 49 into which the photosensitive material holding stand 108 is fitted, and the color plate film 104 When placed, it is configured to be able to be pulled out from the housing 12 in a direction substantially orthogonal to the scanning direction.

Further, an opening 65 corresponding to the opening 49 of the box 50 is provided between the lower surface of the box 50 and the photosensitive material holding stand 108 for shielding the photosensitive material 102 from light when the color plate film 104 is placed.
A top plate 66 has a top plate 66, and a light shielding film 68 as a shutter that opens and closes the opening 65.

The photosensitive material 10 supplied from the photosensitive material supply device 20 is placed upstream of the photosensitive material holding table 108 in the conveying direction of the photosensitive material 102.
A transport means 62 for transporting the photosensitive material 102 to a predetermined position on the photosensitive material holding table 108 and a transport means 64 for transporting the exposed photosensitive material 102 are arranged, and a partition wall 70 is provided between the transport means 62 and the switchback mechanism 22. paper shutter 7
2 is provided.

The conveying means 62 attracts the leading end of the photosensitive material 102 in a direction substantially perpendicular to the scanning direction and conveys it to a predetermined position on the photosensitive material holding table 108. In FIG. The suction cup 62a, 62a, .

The conveying means 64 is a nip roller 64a.

It consists of 64b and 64c. Shading fl! 68 is opened and closed by a drive source (not shown), and is configured to close at least when the color plate film 104 is pulled out.Also, the paper shutter 72 is opened and closed by the drive source 72a, but when the exposed photosensitive material 102 is transported. It is best to configure it so that only the

The photosensitive material supply device 20 has a magazine 74 in which the photosensitive material 102 is housed in the form of a roll attached thereto in a detachable manner, and an opening/closing lid 75 is provided on the outside of the magazine 74 . Take-out rollers 76 a and 76 b are provided corresponding to the slit 74 a at the take-out port for the photosensitive material 102 of the magazine 74 . The photosensitive material 102 slightly protruding from 74a can be easily inserted between take-out rollers 76a and 76b, and after being inserted, it can be moved downward to be securely held. A cutter 78 is disposed downstream of these take-out rollers 76a and 76b, and is configured to cut the photosensitive material 102, the tip of which is attracted and conveyed by the conveyance means 62 of the contact device 18, when it reaches a desired length. Ru.

The switchback mechanism 22 includes nip rollers 80a, 80
b, nip belt conveyors 82a, 82b, and nip roller 80a.

The exposed photosensitive material 102 transported and wrapped from the device 18 comprising a switching guide 84 provided on a partition wall 83 with the processing device 24 above the aob is transferred to the nip rollers 80a, 8
0b and nip belt conveyor 82a. The photosensitive material 102 is clamped and conveyed by the photosensitive material 82b and lowered, and when the rear end of the photosensitive material 102 reaches the nip rollers 80a and 80b, the photosensitive material 102 is stopped, the switching guide 84 is switched, and the nip rollers 80a and 80b and the nip belt conveyors 82a and 82b are reversed. Photosensitive material 102 is transported to processing device 24 .

The processing device 24 includes a developing tank 86, a bleaching/fixing tank 88, and washing tanks 90 and 91, which are successively provided, and a photosensitive material that has been developed, bleached, fixed, and washed with a processing solution filled into these tanks. The material 102 is composed of a drying device 92 for drying the material 102, and is configured to be delivered as a color proof onto a tray 94 that protrudes from the housing 12 of the plate inspection device 10 to the outside. Developing tank 86, bleaching/fixing tank 88, washing tank 9
A replenisher storage section 96 for storing a replenisher supply bottle is provided below 0,91.

When producing a color proof using the plate inspection device 10 shown in FIG. 6, first, when the power to the plate inspection device 10 is turned on, automatic setup and warm-up of each device and each processing solution are performed. Ru.

Next, when the start button is input, the photosensitive material 102 is transferred from the magazine 74 of the photosensitive material supply device 20 to the roller 76.
a and 76b, and the tip thereof is transferred to the conveying means 62.
When the suction cup 62a reaches the position of the suction cup 62a, the suction cup 62a descends and the tip of the photosensitive material 102 is sucked, and the suction cup 62a rises a little to the position where the photosensitive material 102 has a size corresponding to the size of the color plate film 104. The conveyor is moved up to the cutter 78.
cuts the photosensitive material 102. After cutting, transfer means 6 again
2 moves eight times, conveys it to a predetermined position on the photosensitive material holding table 108 and stops, and the suction cup 82a releases the photosensitive material 102.
The conveying means 62 returns to its original position.

Next, as described above (shown in FIGS. 3 and 4), the photosensitive material 06 and the color plate film 104 are brought into close contact with each other. Note that when the photosensitive material 106 is transported and fixed, and when the color plate film is placed (when the box body 50 is pulled out)
There is no light shielding! 68 is closed, and the photosensitive material holding stand 10
8 is blocked from light.

In this way, the light source unit 34 moves in a predetermined scanning direction from above the photosensitive material 102, the color plate film 104, and the overlay sheet 106, which are sufficiently tightly fixed, to perform scanning exposure. At this time, the filter 32 is set with a complementary color filter of the color corresponding to the color plate film 104.

After exposure, the light source unit 34 and the squeeze roller return to their original positions, the photosensitive material holder 108 is lowered as described above, and the overlay sheet 106 is reversed to separate the color plate film 104 from the photosensitive material 102.

When the photosensitive material holding stand 108 comes below the light shielding film 68,
The light shielding film 68 is closed to shield the photosensitive material 102 from light.

Subsequently, when another color plate film 104 is to be exposed, the photosensitive material holder 108 stops at a predetermined position. Thereafter, the box 50 is pulled out and the color plate film 104 is replaced. In this way, scanning exposure is repeated a plurality of times, for example, three times, and all the images of the Y, M, C and black plate films are formed on one sheet of photosensitive material 102. Of course, Y
, M, C, and a blackout version, or may be images of multiple versions.

When the necessary exposure is completed, the photosensitive material holding table 108 returns to its original position, the vacuum device 116 releases the suction and fixation of the exposed photosensitive material 102, and the nip roller 64a of the conveying means 64
starts pinching and conveying the tip of the exposed photosensitive material 102,
The vapor shutter 72 is opened, and the photosensitive material 102 is transferred from the contact device 18 to the switchback mechanism 22 by the conveying means 64.
sent to. When completely sent, the vapor shutter 72
closes.

When the photosensitive material 102 is conveyed to a predetermined position in the switchback mechanism 22, the nip rollers 80a, 80b and the nip conveyors 82a, 82b stop. here,
When the switching guide 84 switches the conveyance path, the nip rollers 80a, 80b and the nip conveyors 82a, 82b
is reversed and the photosensitive material 102 is sent to the processing device 24.

In the processing device 24 , the photosensitive material 102 is developed in a developing tank 86 , bleached and fixed in a bleach/runner 88 , and then transferred to a washing tank 90 .
．． After being sufficiently washed with water in step 91, it is sufficiently dried in drying device 92, and sent out to takeout tray 94 as a color proof.

In the plate inspection apparatus 10 shown in FIG. 6, a color proof is produced in this way, for example, but everything except setting the color plate film 104 in the positioning bin 124 is automatically performed by a control device (not shown). be able to. Of course, you can do it manually if necessary.

Further, the system may be configured to use a large number of sensors in each part to display each process of each device, and also to display jams and abnormalities.

The color proof thus obtained is suitable for plate inspection in the photomechanical printing process in both color tone and image quality.

Although the scanning type contact exposure apparatus of the present invention has been described above in detail, the present invention is not limited to the above examples.
Various improvements, without changing the gist of the present invention,
Needless to say, changes may be made.

<Effects of the Invention> In the scanning type contact exposure apparatus of the present invention, the squeeze roller and the light source are integrally constructed.

Therefore, by simply moving the light source unit, which integrates the squeeze roller and the light source, back and forth once, the light source unit bleeds the air in the overlay sheet on its outward journey, and after completely adhering the photosensitive material and color plate film, Since exposure can be performed on the return path of the light source unit, the exposure time per exposure can be shortened compared to a conventional scanning type contact exposure device in which the air bleed device and the light source each make one round trip each time. Can be done.

In particular, when used in a plate inspection device that creates a color proof by multiple exposure of a sheet of silver salt positive color photographic light-sensitive material, three exposures are usually required, which greatly reduces time. .

Furthermore, since the squeeze roller and light source are integrated, a single scanning system is required to scan the light source unit, compared to conventional scanning-type contact exposure equipment that requires a scanning system for each of the air bleed device and the light source. Since air bleeding and exposure can be performed, the apparatus can be simplified.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing a scanning type contact exposure apparatus of the present invention. FIG. 2 is a schematic sectional view of a light source unit of the scanning type contact exposure apparatus shown in FIG. 3 and 4 are schematic diagrams showing the operation of the scanning type contact exposure apparatus shown in FIG. 1. FIG. 5 is a schematic diagram illustrating the overlay tonnage effect of the scanning type contact exposure apparatus shown in FIG. 1. FIG. 6 is a schematic sectional view of an example in which the scanning type contact exposure apparatus shown in FIG. 1 is applied to a silver salt photographic plate inspection apparatus. Explanation of symbols 10... Plate inspection device, 12... Housing, 20... Photosensitive material supply device, 22... Switchback mechanism, 24... Processing device, 48... Front plate, 49. 65... Opening, 50... Box body, 52 a, 52 b... Roller, 54... Belt, 56... Positioning bin stand, 58... Positioning pin, 60... Vacuum device , 62.64... Conveyance means, 66... Top plate, 68... Light shielding film, 70.83... Partition wall, 72... Paper shutter, 74... Magazine, 76a, 76b... - Take-out roller, 78...Cutter, 80a, 80b-...Nip roller, 82a, 82b...Nip belt conveyor, 84-
...Switching guide, 86...Developing tank, 88...Bleach/fixing tank, 90.91...Water washing board, 92...Drying device, 94...Take-out tray, 96...Replenisher Storage section, 100... Scanning type contact exposure device, 102... Positive-positive color photosensitive material, 104...
Color plate positive film, 106... Overlay sheet, 108... Photosensitive material holding stand, 110... Light source, 112... Squeeze roller, 114... Light source unit, 116... Positioning pin, 118. ...Positioning bin stand, 120...Suction groove, 122...Opening, 124...Belt, 126.128...Roller, 130...Equal magnification lens array, 132...Box body, 134 ... Filter, 136 ... Arm, 138 ... Drive screw 140 ... Traveling nut, 142 ... Guide rail, 144 ... Guide vibe, 146 ... Shutter FIG, 2 FIG, 3

Claims (1)

[Claims] (1) Scanning contact exposure in which at least one color separation halftone positive or negative film (hereinafter referred to as a color plate film) is closely stacked on a color photosensitive material, and the photosensitive material is scanned and exposed using a movable light source. An apparatus comprising: an overlay sheet for covering the photosensitive material and the color separation film; a photosensitive material holder for tightly fixing the photosensitive material and the color separation film using the overlay sheet; It is characterized by comprising a squeeze roller for promoting close fixation of the photosensitive material and the color plate film on the photosensitive material holding table, and the squeeze roller and the light source are integrally configured. Scanning type contact exposure equipment.