JPH02158743A - Contact exposure device - Google Patents

Abstract

PURPOSE:To obtain a satisfactory color photograph free of image dislocation color blurring, etc. by controlling the fixing of a photosensitive material and the fixing of an overlay sheet independently and freely. CONSTITUTION:A photosensitive holding base 108 formes suction holes, whereby various types of photosensitive materials such as a photosensitive material 102 are sucked and fixed, and a suction groove 110 whereby the overlay sheet 106 is sucked and fixed outside an area where the suction holes are formed. A vacuum line 114 independently forms a line, which sucks the suction groove 110 from the opening 110a which can be opened and closed by a valve 118, and another line, which sucks the suction holes and can be opened and closed by valves 120a-120d, thereby freely switching the fixing of the overlay sheet 106 to the fixing of the photosensitive material 102 and vice versa. Thus, the photosensitive material 102 is not dislocated when the overlay sheet 106 is removed, and a satisfactory color photograph free of image dislocation, color blurring, etc. can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a contact exposure apparatus. In detail, it is suitably used for inspection (pre-proofing) in photolithography,
The present invention relates to a contact exposure device for bringing a color plate film and a color photosensitive material into close contact with each other and exposing 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, 28 printing plates are prepared 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 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 image 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 (
Then, a negative film of the letters and pictures is produced using a plate-making camera or the like.

Then, 0% M, Y and B prepared in this way
By multiple-exposure and compositing negative films corresponding to K, letters, etc. using a mask, etc., we created a film called lith film that includes four halftone dots corresponding to 0% M, Y, and BK, letters, and paintings. Produce color positive film.

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 proof, to understand the client's intentions, proof printing using a proofing machine is the mainstream in Japan. It is used for re-examining and giving instructions on film making, such as making 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 correction instructions are required, some companies specializing in plate making 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. This method allows for very simple plate inspection, but since the resulting image is a so-called blueprint image, it is easy to proofread the shapes of characters, figures, etc., but the resulting printed matter is It is not possible to calibrate colors, etc.

In addition, as an electronic proofing method, the image of the color plate film is
There is a method of performing plate inspection by reproducing it on RT, or recording the uncorrected color plate film on video film, etc., and after inspection and correction, the uncorrected color plate film and the corrected color plate film are displayed on the CRT. Reproduce the image by overlaying it with color film, inspect the corrected areas,
Methods for performing plate inspection have also been proposed.

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 image obtained on a CRT has a color tone that is significantly different from that obtained by mechanical ink proof printing, and furthermore, it is not possible to keep a hard copy or the like 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,
Color photographs are produced as color proofs by performing processes such as fixing.

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 the method of multiple exposing a silver salt photographic light-sensitive material with this color plate film to produce a color photograph as a color proof and performing plate inspection, the method of exposing the light-sensitive material is as follows: Although there are methods such as camera-based methods that use various imaging optical systems, it is preferable to use photosensitive materials and color plate films because they have excellent resolution, color reproducibility, and can provide color proofs that are closer to the intended printed matter. A contact exposure method in which exposure is performed in close contact is preferred.

By the way, as mentioned above, in contact exposure in positive-positive plate inspection, a color positive film corresponding to Bk is superimposed on each color positive film corresponding to C, M, and Y, and 0%
Since the photosensitive material is sequentially exposed multiple times using M and Y color positive films, the color positive film usually needs to be replaced twice for each of the three colors C, M and Y before exposure is completed. be.

Therefore, a contact exposure apparatus that performs such dense S exposure is
During exposure, it is necessary to be able to reliably stack each color film at a predetermined position on the photosensitive material without shifting, and for this purpose, the photosensitive material must be placed in a fixed position on the photosensitive material holder until the exposure is completed. It needs to be fixed.

However, in conventional contact exposure equipment, the photosensitive material and overlay sheet are fixed by suction, that is, the photosensitive material and overlay sheet are suctioned through a large number of suction holes formed over the entire surface of the photosensitive material holding table. By fixing both on the photosensitive material holder,
It brings the photosensitive material and color plate film into close contact.

Therefore, both the photosensitive material and the overlay sheet are always fixed by suction, making it difficult to remove the overlay sheet to replace the color plate film, and in this case, the placement position of the photosensitive material may shift. This is highly likely, and it becomes difficult to bring the next color plate film into close contact with the predetermined position on the photosensitive material. Furthermore, when the overlay sheet is removed, the suction holes that were sucking the overlay sheet suck air, which weakens the fixing force of the photosensitive material, making the photosensitive material more likely to shift position.

In order to make it easier to remove the overlay sheet, the suction of the photosensitive material holding table can be stopped or the suction force can be weakened, but in this case, the suction and fixing force of the photosensitive material is also lost, and the position of the photosensitive material is more likely to shift. .

In addition, the maximum size of the photosensitive material and color plate film that can be used in a normal contact exposure device for plate inspection is the standard 82 size, so the size of the photosensitive material holder in a normal contact exposure device corresponds to this size. When a photosensitive material smaller than this size is passed through, the suction hole that does not suck the photosensitive material will suck air, which will weaken the fixing force of the photosensitive material and cause the photosensitive material to shift. It's very likely that it will happen.

An object of the present invention is to solve the problems of the prior art described above, and the purpose of the present invention is to overlay a color plate film or the like on a sheet of photosensitive material in close contact with each other, cover both with an overlay sheet, and then expose the photosensitive material to light. In contact exposure equipment, the fixing position of the photosensitive material on the photosensitive material holder does not shift when the overlay sheet is removed to replace the color plate film, etc., and the color on the photosensitive material due to this does not shift. To provide a contact exposure device capable of obtaining a good color proof for plate inspection without displacement of a plate film.

A further object of the present invention is to provide a contact exposure apparatus as described above, which can suitably fix a photosensitive material on a photosensitive material holder depending on the size of the applied photosensitive material. .

Means for Solving the Problems> In order to achieve the above object, the present invention provides a contact exposure apparatus that stacks at least one color plate film on a photosensitive material in close contact and exposes the photosensitive material, comprising: an overlay sheet for covering the photosensitive material and the color plate film; a photosensitive material holding table on which the photosensitive material is placed and suction-fixing the photosensitive material and the overlay sheet; and a photosensitive material holding table provided on the photosensitive material holding table. a vacuum device for suctioning and fixing the photosensitive material and the overlay sheet onto the photosensitive material holding table, and fixing the photosensitive material and the transparent film onto the photosensitive material holding table independently. Provided is a contact exposure device characterized by control.

Another aspect of the present invention is that in the contact exposure apparatus described above, the suction area on the photosensitive material holding table for fixing the photosensitive material is adjusted to the size of the photosensitive material and/or the color plate film. Provided is a contact exposure apparatus having a switching means that switches depending on the situation.

<Operation of the invention> The contact exposure apparatus of the present invention can freely switch between fixing the photosensitive material and fixing the overlay sheet, so when replacing the color plate film, the suction fixation of only the overlay sheet is released, Only the overlay sheet can be easily removed while the photosensitive material remains fixed. Therefore, the photosensitive material does not shift when the overlay sheet is removed, and there is no shift in the overlapping position of the color plate film on the photosensitive material caused by this. Therefore, when applied to the production of color photographs for plate inspection, for example, it is possible to obtain good color photographs without image shift, color blur, etc.

Moreover, because of the above structure, even after the overlay sheet is removed, the photosensitive material must be reliably fixed on the photosensitive material holding table using an independent suction and fixing system.

In addition, since the suction area for suctioning and fixing the photosensitive material on the photosensitive material holding table can preferably be switched according to the size of the commonly used photosensitive material, even when a small photosensitive material is used, the suction area for the photosensitive material can be changed. Since air is not sucked by the suction holes that are not used, the photosensitive material can be fixed on the photosensitive material more reliably, and image shift, color blurring, etc. can be more preferably prevented.

<Embodiments> A contact exposure apparatus according to the present invention will be described in detail below with reference to preferred embodiments shown in the accompanying drawings.

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

The contact exposure apparatus 100 shown in FIG.
2 (standard A3 size in the example shown in FIG. 1) and a transparent overlay sheet 106 for covering the color plate film 104 shown by the dotted line in the figure and bringing them into close contact with each other, and the photosensitive material 102 are arranged. , and photosensitive material 10
2 and a photosensitive material holding table 108 which can be raised and lowered for suctioning and fixing the overlay sheet 106.

In the example shown in FIG. 1, the contact exposure device 1
00 has a positioning pin base 122 for loading the color plate film 104, which is inserted into the recess of the photosensitive material holding base 108 when the color plate film 104 is brought into close contact as shown in FIG. A positioning bin 124 is provided for loading and positioning. Note that the positioning pin stand 122 is fixed at the illustrated position by a known means (not shown).

In the example shown in FIG.
Reference numeral 6 is a transparent sheet whose both ends are connected by a belt 126 and supported by rollers 128 and 130. When the photosensitive material holding table 108 is lowered, the rollers 128 and 1
It can be reversed by 30 rotations.

The overlay sheet 106 may be a normal sheet used for bringing the photosensitive material 102 and a sheet-like material such as the color plate film 104 into close contact with each other, and is not particularly limited. Note that in the present invention, the overlay sheet 106 is not limited to the example in which it is supported by the rollers 128 and 130 shown in FIG.
Various types of materials, such as those configured so that they can be flipped up, can be used.

In the contact exposure apparatus 100 of the present invention shown in FIG.
It can be raised and lowered for purposes such as replacement.

On such a photosensitive material holding stand 108, the photosensitive material 102 is
For suctioning and fixing various types of photosensitive materials such as, on the photosensitive material holding table, a large number of illustrations are formed on the entire surface of the B2 size photosensitive material fixing area shown by the dashed line a in the figure on the photosensitive material holding table 108. suction holes 110 for suctioning and fixing the overlay sheet 106 formed outside the area on the photosensitive material holding table 108 where the suction holes are formed;
are formed on the photosensitive material holder 108.

Further, a vacuum pump 112 for suctioning the suction groove 110 and the suction hole, and a vacuum line 114 connecting the suction hole and suction groove 110 and the vacuum pump 112 are connected to the photosensitive material holding table 108, and the photosensitive material 102 is A vacuum device 116 for suctioning and fixing the overlay sheet 106 to the photosensitive material holding table 108 is constructed.

The suction hole allows the photosensitive material 102 to be transported by a transporting means (not shown) and placed at a predetermined position on the photosensitive material holding table 108.
is connected to the vacuum pump 112 via the vacuum line 114.
This is for suctioning and fixing. Therefore, the number, shape, size, etc. of the suction holes are not particularly limited as long as they can suitably suction and fix the photosensitive material placed on the photosensitive material holding table.

The suction groove 110 also allows an overlay sheet 106 for covering and adhering the color printing film 104 and the photosensitive material 102 to a vacuum pump 112 through a vacuum line 114.
It is designed to surround the photosensitive material fixing position of the maximum size that can be used. In other words, the overlay sheet 106 covering the photosensitive material 102 and the color plate film 104 is sucked from the surrounding area around the photosensitive material 102 and the color plate film 104 in the suction groove 110, and preferably air is removed using a squeeze roller or the like, and the overlay sheet 106 is exposed to light. It is brought into close contact with the material holding table 108, and the photosensitive material 102 and color plate film 104 are brought into close contact.

The shape, size, etc. of the suction groove 110 are not particularly limited as long as the overlay sheet 106 can be suitably brought into close contact with the photosensitive material holder 108 on the outside of the applied photosensitive material. Color plate film 104
, and further may be formed according to the overlay sheet 106.

Note that the overlay sheet 106 is attached to the photosensitive material holding table 10.
8, if air is removed using a squeeze roller or the like, open the opening 110a which is the suction port of the suction groove 110.
is naturally formed at the end point in the air bleed operation direction.

Here, in the contact exposure apparatus 100 of the present invention, the vacuum line 114 has an opening 1 that can be opened and closed by a valve 118.
A line for suctioning the suction groove 110 from 10a and a line for suctioning the suction holes, which can be opened and closed by valves 120a to 120d, are formed independently. By operation, the suction of the suction holes and the suction grooves 110 can be independently and freely controlled, and the fixing of the overlay sheet 106 and the photosensitive material can be performed, such as suction fixing of both the overlay sheet 106 and the photosensitive material 102, suction fixation of only the photosensitive material 102, etc. 10
It is possible to freely switch between the two fixed positions.

Therefore, it is easy to remove the overlay sheet 106 when replacing the color plate film 104 (in the example shown in FIG. Also, in this case, the photosensitive material 102 is suctioned and fixed by an independent suction system, so that the fixed position of the photosensitive material 102 does not shift.

Further, in the example shown in FIG. 1, the vacuum device 116
As a more preferable embodiment, the suction and fixation area of the photosensitive material on the photosensitive material holding table 108 can be changed according to the size of the photosensitive material and/or the color plate film.

That is, the suction hole for suctioning and fixing the photosensitive material formed on the photosensitive material holding table 108 corresponds to the area corresponding to the A3 size indicated by the photosensitive material 102 and the B3 size surrounded by the - dotted chain line C. area C corresponding to the A2 size surrounded by - the dotted chain line a, and area A corresponding to the B2 size surrounded by the dotted chain line a, and these areas can be sucked independently. The valve 120d is used for suction in area C, and the valve 12 is used for suction in area C.
At 0c, suction in area B can be opened and closed by valve 120b, and area A can be opened and closed by valve 120a.

Therefore, by opening and closing the valves 120a to 120d, it is possible to switch the suction and fixation area according to the size of the photosensitive material and/or the color plate film.

For example, when suctioning and fixing an A3-sized photosensitive material, it is sufficient to open the valve 120d and closing the others to suction only area D. When suctioning and fixing a B3-sized photosensitive material, the valve 120c is further opened. Then, in addition to area D, area C may be suctioned. Further, when suctioning and fixing an A2 size photosensitive material, in addition to areas C and D, the valve 120b is opened to suction the B area, and when sucking and fixing a B3 size photosensitive material, 120a to 120b are opened. 120
Open all valves in d and aspirate all areas AlB, C and D.

By making it possible to switch the suction and fixation area on the photosensitive material holding table 108 according to the size of the photosensitive material and/or color plate film, the suction holes that are not used for suctioning the photosensitive material do not suck air. It becomes possible to securely and strongly fix the photosensitive material according to the size of the photosensitive material, and there is no fear that the photosensitive material will shift position even when the overlay sheet 106 is removed or when the color plate film is replaced. .

In the contact exposure apparatus of the present invention, the fixed suction area corresponding to the size of each photosensitive material is not limited to the example shown in FIG. As shown in Figure 2, by configuring the five areas E to ■ so that each area can be suctioned independently, when suctioning and fixing an A3 size photosensitive material, only area E can be suctioned, and , when suctioning and fixing a B3 size photosensitive material, in addition to the above-mentioned E area, the F@A area and G area are also suctioned, and when A2 size photosensitive material is suctioned and fixed, the G area is suctioned. Stop and E
Area, F area, and H area are suctioned, and when 82 size photosensitive material is suctioned and fixed, all five areas from E to ■ area are suctioned to fix each size of photosensitive material. Good too.

By configuring the suction area of the photosensitive material holding table 108 as shown in FIG. 2, for example, when the photosensitive material is conveyed in the direction of the arrow in FIG.
Prepare at least 2 fffi of photosensitive material corresponding to B size, select a photosensitive material suitable for the size of the color plate film, and cut the rear end according to the size of the color plate film when supplying the photosensitive material. Accordingly, A2, A3
The present invention provides a contact exposure apparatus which can carry out contact exposure of four standard sizes of , B2 and B3, eliminates waste of photosensitive material, and has good workability with less need for replacement of photosensitive materials.

FIG. 3, FIG. 4, and FIG. 5 are schematic diagrams of an example of when the photosensitive material 102 and the color plate film 104 are brought into close contact using the contact exposure apparatus 100 of the present invention shown in FIG. .

In the contact exposure apparatus 100, in the standby state, the photosensitive material holder 108 is lowered, and the overlay sheet 106 is inverted downward, as shown in FIG.

Color plate film 104 compatible with standard A3 size printed matter
is positioned by the positioning pins 124 of the positioning pin stand 122, supported by the overlay sheet 106 and placed in a predetermined position, and the exposure start switch is pressed.
The photosensitive material 102 is transported by a transport means (not shown) to a predetermined position shown in FIG. 108 is suctioned and fixed at a predetermined position.

Here, the photosensitive material holding table 108 is separated from the overlay sheet by a shutter (not shown) and completely shielded from light.

Photosensitive material! 02 becomes stable, a shutter (not shown) opens and the photosensitive material holding table 108 rises to the position shown in FIG.

Next, the rollers 128 and 130 rotate in the direction of the arrow in FIG. 4, and the overlay sheet 106 is reversed, so that the color printing film 104 and the photosensitive material 102 can come into contact with each other.

When the overlay sheet 106 is completely reversed, the photosensitive material holder 108 is further raised to the position shown in FIGS. 10
6 and the photosensitive material holding stand 108 are in close contact with each other.

Next, the valve 118 for suctioning and fixing the overlay sheet is opened, the overlay sheet 106 is suctioned and fixed to the photosensitive material holding table 108, the photosensitive material 102 and the color plate film 104 are fixed in close contact, and the sheet is irradiated with an exposure light source (not shown). , the photosensitive material 102 is exposed.

When the exposure of the photosensitive material 102 is completed, the valve weight 18 is closed and the suction fixation of the overlay sheet 106 is released.
Next, the photosensitive material holding table 108 is lowered and the overlay sheet 106 is removed.
is reversed and returns to the state shown in FIG. 3, the shutter (not shown) is closed, and the color plate film can be replaced.

In the contact exposure apparatus 100 of the present invention, even in this state, only the photosensitive material 102 is independently fixed, so that the photosensitive material does not shift in position, and the color plate film to be exposed next is transferred to the photosensitive material. It can be reliably placed in a predetermined position on the material 102.

FIG. 6 shows a schematic cross-sectional view of an example in which the contact exposure apparatus 100 of the present invention is applied to a silver salt photographic plate inspection apparatus.

The plate inspection device 10 shown in FIG. 6 includes a housing 12,
A movable scanning exposure device 14 is placed on the top of the housing 12, and a photosensitive material is placed on the side of the contact device 18! The lower part of the housing 12 includes a photosensitive material supply device 20 for supplying 02, and the contact exposure device 100 of the present invention described above.
A switchback mechanism 22 that temporarily holds the exposed photosensitive material 102 on the side, and a processing device 24 that processes the photosensitive material 102 that has been exposed by the contact exposure device 100 of the present invention with a processing liquid to make it color proof. has.

The scanning exposure device 14 includes a linear light source 26 that is an exposure light source for the photosensitive material 102, and a 1-magnification fiber lens array 2 such as a Cellfora lens array (specially manufactured by Nippon Sheet Glass) directly below the linear light source 26.
8 in the light-shielding box 30, and right below the fiber lens array 28 are R (red) G (
R- used to reproduce the three primary colors of green) and B (blue).
A light source unit 34 that is movable back and forth in the scanning direction and has a switchable filter 32 consisting of a G-B and clear-through or amber-based black filter for color negative film;
A squeeze roller 36, which is movable in the scanning direction and the vertical direction, is used to bleed air from the overlay sheet 106 when the overlay sheet 106 is suctioned and fixed to the photosensitive material holding table 108, the box body 30, and the squeeze roller 36. It has a drive screw 38 and a transmission means 42, which are moving means.

In the plate inspection device 10, the squeeze roller 36 moves B from one end to the other end on the photosensitive material holding table 108 to remove the overlay sheet 106 and the color separation film 1.
04 completely adheres to the photosensitive material 102, the linear light source 2
6 is turned on or the shutter is opened, the color filter 32 is switched so that a desired color filter acts on the fiber lens array 28, and the light source unit 34 is moved in a predetermined direction to perform scanning exposure.

Since the 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 128 and 130, positioning pin stand 122, and color film loading device 16 have a front plate with a handle and an opening into which the photosensitive material holder 108 is fitted. 49, and is configured to be able to be pulled out from the housing 12h in a direction substantially perpendicular to the scanning direction when the color plate film 104 is placed.

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.
and a light-shielding film 68 as a shutter for opening and closing 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 conveyance means 62 for conveying the photosensitive material 2 to a predetermined position on the photosensitive material holding table 108 and a conveyance means 64 for conveying the exposed photosensitive material 102 are arranged, and a partition wall 70 is provided between the conveyance means 64 and the switchback mechanism 22. The vapor 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. A plurality of suction cups 62a, 62a, . . .
The supporting member 62b and the wire 62c as a moving means
and rollers 62d, 62d, and their driving source (not shown).

The conveying means 64 is a nip roller 64a.

It consists of 64b and 64c. Il! The light film 68 is opened and closed by a drive source (not shown), but at least the color plate film 1
Closes when drawing out 06. Also, paper shutter 7
2 is opened and closed by its driving source 72a, but it is preferable to open it only when the exposed photosensitive material 102 is transported.

The photosensitive material supply device 20 has a magazine 74 in which the photosensitive material 102 is housed in a roll shape removably attached therein, and an opening/closing opening i75 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 insertion,
It is constructed so that it can be held securely in three shifts. A cutter 78 is disposed downstream of these take-out rollers 76a and 76b, and is configured to cut the photosensitive material 102, the leading end of which is sucked and conveyed by the conveying means 62 of the Fuji device 18, when it reaches a required length. be done.

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

The exposed photosensitive material 102, which has been conveyed from the device 18 comprising a switching guide 84 provided on a partition wall 83 with the processing device 24 above the processing device 80b, is transferred to the nip rollers 80a and 80b.
0b and the nip belt conveyors 82a, 82b, the photosensitive material 102 descends, and the rear end of the photosensitive material 102 is transferred to the nip roller 80a. When it reaches 80b, it stops and the switching guide 84
The nip rollers 80a, 80b and the nip belt conveyors 82a, 82b are reversely rotated, and the photosensitive material 102 is conveyed to the processing device 24.

The processing device 24 includes a developing tank 86, a bleaching/fixing tank 88, and a washing tank 90. 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. Development a! A replenisher storage tank 96 for storing replenisher supply bottles is provided below the whitening/fixing tank 86 and the washing tank 90 and 91.

When producing a color proof using the plate inspection device 10 shown in FIG. 6, first, the plate inspection device 1 is used.

When the power is turned on manually, each device and each processing solution are automatically set up and warmed up.

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, conveys it to a predetermined position on the photosensitive material holding table 108 and stops, and the suction cup 62a releases the photosensitive material 102.
The conveying means 62 returns to its original position.

Next, as described above (shown in FIGS. 3 to 5), the photosensitive material holding table 108 is raised, the overlay film is reversed, and the photosensitive material 106 and the color plate film 104 are brought into close contact with each other. Note that the light-shielding film 68 is closed 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), and the photosensitive material holding table 1 is closed.
08 is shielded 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 described above 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%C1 It may be only one of the black-and-white plates, or it may be only images of a plurality of plates.

When the necessary exposure is completed, the photosensitive material holding table 10B returns to its original position, the vacuum device 116 releases the suction fixation of the exposed photosensitive material 102, and the nip roller 64a of the conveyance 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 bleaching/fixing tank 88, and washed with water 4!9.
After being sufficiently washed with water at 0.9 tons, it is sufficiently dried in a drying device 92 and sent to a take-out tray 94 as a color proof.

In the plate inspection apparatus 10 shown in FIG. 6, a color proof is produced in this manner, for example, but everything except setting the color plate film 104 on the positioning pin 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 contact exposure apparatus of the present invention has been described in detail based on specific examples, the present invention is not limited thereto, and various changes and improvements can be made without changing the paper of the present invention. Of course it's okay to do something.

<Effects of the Invention> The contact exposure apparatus of the present invention allows the fixing of the photosensitive material and the fixing of the overlay sheet to be freely controlled independently, so that only the overlay sheet can be fixed by suction when replacing the color plate film. After releasing the overlay sheet, only the overlay sheet can be easily removed while the photosensitive material is securely fixed.

Furthermore, because of the above structure, the photosensitive material can be reliably fixed on the photosensitive material holding table by an independent suction fixing system even after the overlay sheet is removed.

In addition, since the suction area for suctioning and fixing the photosensitive material on the photosensitive material holder can be switched preferably according to the size of the photosensitive material to be applied, even when a small photosensitive material is applied, the suction area on the photosensitive material holder can be changed. When suctioning and fixing the photosensitive material on the photosensitive material, the suction holes that are not used for suctioning the photosensitive material do not suck air, and the photosensitive material can be more reliably fixed on the photosensitive material.

Therefore, the placement position of the photosensitive material does not shift during various operations such as removing the overlay sheet, and there is no shift in the overlapping position of the color plate film on the photosensitive material caused by this, and for example, the color plate film for plate inspection does not shift. When applied to the production of photographs, it is possible to obtain good color photographs without image shift, color blurring, etc.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view showing an embodiment of a contact exposure apparatus of the present invention. FIG. 2 is a schematic plan view showing another embodiment of the photosensitive material holder applied to the contact exposure apparatus of the present invention. 3, 4, and 5 are schematic side views showing the operation of the contact exposure apparatus of the present invention shown in FIG. 1. FIG. 6 is a schematic cross-sectional view of an example in which the present invention is applied to a silver salt photographic plate inspection device. Explanation of symbols 10... Plate inspection device, 12... Housing, 14... Scanning exposure device, 20... Photosensitive material supply device, 22... Switchback mechanism, 24... Processing device, 26 ... Linear light source, 28 ... Fiber lens array, 30 ... Box, 32 ... Filter, 34 ... Light source unit, 36 ... Squeeze roller, 38 ... Drive screw 40. ... Drive source, 42... Transmission means, 49.65... Opening, 52a, 52b''-0-ra, 54... Belt, 56... Positioning pin stand, 58... Positioning bin, 62.64...Transporting means, 68...Light shielding film, 70.83...Partition wall, F2...Vapor shutter, 74...Magazine, 76a, 76b-...Takeout roller, 78...・Cutter, 80a, 80b...Nip roller, 82a, 82b...Nip belt conveyor, 84・
...Switching guide, 86...Developing tank, 88...Bleaching/fixing/refining, 90.91...Washing tank, 92...Drying device, 94...Take-out tray, 96...Replenishment Liquid storage section, 100... Contact exposure device, 102... Photosensitive material, 104... Color plate film, 106... Overlay sheet, 108... Photosensitive material holding stand, 110... Suction groove, 110a...Opening, 112...Vacuum pump, 114...Vacuum line, 116...Vacuum device, 118.120a, 120b. 120c, 20d... Pulp, 122... Bridge, 124... Positioning bin, 126... Belt, 128.130... Roller FIG, 3

Claims (2)

[Claims] (1) A contact exposure device for exposing the photosensitive material by overlaying at least one color separation dot positive or negative film (hereinafter referred to as color plate film) on the color photosensitive material in close contact with the photosensitive material, the photosensitive material and an overlay sheet for covering the color plate film, a photosensitive material holding table on which the photosensitive material is placed and suction-fixing the photosensitive material and the overlay sheet, and the photosensitive material disposed on the photosensitive material holding table. and a vacuum device for suctioning and fixing the overlay sheet onto the photosensitive material holding table, and independently controlling fixing of the photosensitive material onto the photosensitive material holding table and fixing of the overlay sheet. A contact exposure device that is characterized by: (2) The contact exposure apparatus according to claim 1, further comprising a switching means for switching a suction area on the photosensitive material holder for fixing the photosensitive material depending on the size of the photosensitive material and/or the color plate film. .