JPH02226155A - Color plate film loading device - Google Patents

Abstract

PURPOSE:To bring a color plate film and a photosensitive material into contact while they are accurately positioned by providing a fixation member for fixing the color plate film, which is positioned with positioning pins, on a base. CONSTITUTION:The color film loading device has the positioning pins 58 for positioning the color plate film S at a specific position, the base 56 having a positioning means 102 which is provided with the positioning pins 58 and positions the film S with a photosensitive material holding base 46, and the fixation member 59 which fixes the color plate film S, which is positioned with the positioning pins 58, on the base 56. Thus, the color plate film S is securely fixed on the base 56 by the fixation member 59, so when the photosensitive material A and color plate film S are brought into contact with each other after the color plate film S is replaced, the color plate film S never deviates from the positioning pins 58 as a color plate film support member moves or the photosensitive material holding base 46 is elevated, so that exposure is performed while the photosensitive material and color plate film are accurately brought into contact with each other at all times.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a color plate film loading device for contact exposure of a color plate film and a photosensitive material in producing a color proof in a photolithography process.

In the present invention, the term "color plate film" refers to a color plate film separation halftone positive or negative film.

<Conventional technology> Color printed matter is used for various books, catalogs, magazines, leaflets,
Used for posters, etc.

Such color printed matter usually has cyan (hereinafter referred to as C), magenta (hereinafter referred to as M),
The three primary colors of yellow (hereinafter referred to as Y) and Sumi
(hereinafter referred to as Bk), create a color plate film with four halftone dots corresponding to each color, and use this color plate film to create a clM
, Y and Bk.
It is produced by overprinting each color of ink on paper using this printing plate.

In color printing, proof printing is usually performed to obtain the final approval of the client before the actual printing.

Proof printing is a method in which a proof plate is actually created using a 25th plate, etc., and then a color print is made on actual paper using a proofing machine, and the color print is inspected for errors in characters, patterns, etc., color tone, etc. .

Therefore, although there is an advantage that inspection can be carried out using a printed matter substantially similar to the intended printed matter, it is very time consuming, laborious, and costly. Furthermore, in actual proofreading, if there are mistakes or changes in characters, figures, or other patterns, the process must go back to the previous film stage and make corrections.

For this reason, before making a proof plate or an actual printing plate (printing plate), the resulting printed matter is inspected for errors in characters, layout, images, color tone, etc. in the state of the color plate film, and then corrected. Simple proofreading, so-called plate inspection, is being carried out.

Such plate inspection methods include printing a color plate film directly onto a diazo photosensitive material to form an image and inspecting this image, and plate inspection by reproducing the image of the color plate film on a CRT. Various methods have been proposed, but it is easy to
The photographic plate inspection method is attracting attention as a method for inspecting plates by making hard copies that are close to the intended printed matter.Among them, photographic plate inspection methods are attracting attention as a method for inspecting plates by making hard copies that are easy and close to the final printed matter. Because of this, it is possible to produce a color photograph that is almost the same as the intended printed matter by subjecting a sheet of silver halide photographic light-sensitive material to multiple exposures using a color plate film, and then wet-processing this light-sensitive material. The method of performing plate inspection is attracting attention.

This method basically involves overlaying each color positive film corresponding to the three primary colors mentioned above on a Bk film, and sequentially exposing the sheets of photosensitive material to a predetermined light source through a complementary color filter. . After multiple exposure corresponding to three colors is completed, the exposed photosensitive material is then subjected to processing such as development and fixing to produce a color photograph as a color proof.

Since the color proof obtained in this way is almost similar to the intended printed material, plate inspection can be performed very well, and furthermore, the color proof can be kept at hand.

Furthermore, according to the above method, producing a color photograph as a color proof is much easier than producing a proof.

In this method, a silver salt photographic light-sensitive material is multiple-exposed using a color plate film to produce a color photograph as a color proof, and the plate is inspected. There are several methods. However, a contact exposure method in which the light-sensitive material and the color plate film are exposed in close contact with each other is preferred because it has excellent resolution, color reproducibility, etc., and provides a color proof that is closer to the intended printed material.

In this type of contact exposure, the photosensitive material is suctioned and fixed onto a photosensitive material holder, one or two color plates are placed on top of the photosensitive material, and the photosensitive material and color plate film are placed on a transparent sheet called an overlay sheet. Cover with a film sheet,
By suctioning and fixing this overlay sheet to a photosensitive material holder, the photosensitive material and the color plate film are brought into close contact with each other.

Therefore, the present applicants proposed in Japanese Patent Application No. 63-314191 a plate inspection device that can obtain good color proofs using such a contact exposure method.

<Problems to be Solved by the Invention> By the way, the plate inspection device disclosed in the above-mentioned Japanese Patent Application No. 65-314191, which obtains a full-color blurred review by applying a silver halide photographic method, cannot be used as described above. It is necessary to replace the color plate film at least twice for each of the three colors.

Therefore, in the contact exposure method, the color plate film and the photosensitive material are separated when the color plate film is replaced.

Next, after a color plate film corresponding to a different color is fitted into a positioning bin and loaded at a predetermined position, the photosensitive material and color plate film are brought into close contact again and exposure is performed.

Here, as a matter of course, it is necessary that the photosensitive material and the color plate film, which are brought into close contact with each other again, are accurately aligned. Moreover, at least the light-sensitive material must be shielded from light while the color plate film is being replaced.

Therefore, in the close-contact exposure device of the plate inspection device disclosed in Japanese Patent Application No. 63-314191,
In the bright room, the color plate film is fitted onto the positioning pins and loaded into the color plate film loading device to block light. Next, in the dark room, the photosensitive material holder with the photosensitive material fixed by suction is raised, and the photosensitive material and the positioning pins are placed in the dark room. After the color plate film fitted to the photosensitive material holder is placed in a state where they can be brought into close contact with each other and both are covered with an overlay sheet, the overlay sheet is suctioned and fixed to the photosensitive material holder to accurately align the two and bring them into close contact. has been done.

To replace the color plate film, remove the overlay sheet and
After lowering the photosensitive material holder and shielding it from light, the color plate film loading device is pulled out and the process is carried out in a bright room exposed to light.

In such a contact device, in order to accurately align the photosensitive material and the color plate film, a base plate for the color plate film loading device is fitted into the photosensitive material holding table.
A recessed portion having an alignment means is formed, and a color plate film loading device mounted at a predetermined position is fitted into the recessed portion of the rising photosensitive material holding table and aligned, allowing the two to come into close contact with each other. becomes.

At this time, when the two are in close contact with each other, the color plate film fitted into the positioning bin provided on the base is pushed up from below onto the photosensitive material holder, and may come off from the positioning bin provided on the base. There was.

Also, while the photosensitive material holding table is being raised and lowered, it is necessary to support the color plate film by inverting the overlay sheet, but when removing this overlay sheet to ensure that the photosensitive material and color plate film are in close contact with each other, There was also a risk that the color plate film would come off the positioning bin.

An object of the present invention is to solve the problems of the prior art, and to solve the problems of the prior art,
A color plate film loading device applied to close exposure of a photosensitive material and a color plate film, which prevents the color plate film from coming off from a positioning bin for positioning when in close contact with a photosensitive material holder film, Securely load color film
It is an object of the present invention to provide a color plate film loading device capable of holding a color plate film and bringing both of them into close contact with each other in an accurately aligned state at all times.

Means for Solving the Problems> In order to achieve the above object, the present invention provides a method for positioning at least one color plate film on a photosensitive material that is suctioned and fixed on a photosensitive material holding table that can be raised and lowered. A retractable color plate film loading device used for tightly fixing the color plate film, comprising: a plurality of positioning pins for positioning the color plate film at a predetermined position; and a fixing member for fixing the color printing film positioned by the positioning pin to the base. Provides a plate film loading device.

<Operation of the Invention> The color plate film loading device of the present invention is a drawable color plate film loading device that is applied to contact exposure of a photosensitive material and a color plate film in the production of color proofs in a photolithography process. , a base having means for aligning a positioning bin for positioning the color plate film to be loaded and a photosensitive material holder on which the positioning pin is arranged; and a fixing member for securely fixing the loaded color plate film. It has a member.

Therefore, it is possible to load the color plate film accurately and easily into a predetermined position, and even when it comes into close contact with a photosensitive material, the color plate film is always stacked at a predetermined position on the photosensitive material.
It is possible to make close contact.

In addition, since the color plate film is securely fixed to the support base by the fixing member, when the color plate film is brought into close contact with the photosensitive material after replacing the color plate film, the color plate film supporting member cannot be moved. The color plate film does not come off the positioning bin as the photosensitive material holder rises, and exposure can always be performed with the photosensitive material and color plate film in close contact with each other.

Moreover, by preferably making the heights of the positioning bin and the fixing member substantially equal, it is possible to prevent damage to the overlay sheet by the positioning bin due to air removal by a squeeze roller or the like during close contact.

<Embodiments> The color plate film loading device according to the present invention will be described in detail below with reference to preferred embodiments shown in the accompanying drawings.

FIG. 1 is a schematic cross-sectional view of a plate inspection device to which a color plate film loading device according to the present invention is applied.

As shown in the figure, the color plate film loading device of the present invention includes:
A photosensitive material holding table 46 which is disposed in the upper part of the housing 12 of the plate inspection device 10 and which is movable up and down, is disposed together with an overlay sheet 44 which will be described later in a drawer body 16 that can be pulled out in the scanning direction.
The contact device 18 is configured together with the following.

In the plate inspection apparatus 10 shown in FIG. 1, in addition to a contact device 18 having a color plate film loading device of the present invention, a scanning exposure device 14 is arranged above the contact device 18. It also includes a photosensitive material supply device 20 for feeding the photosensitive material A to the side of the contact device 18, and a switchback mechanism for temporarily holding the exposed photosensitive material A to the side at the lower part of the housing 12. 22, and a processing device 24 for processing the exposed photosensitive material A to produce a color proof.

As shown in FIGS. 1 and 2, the scanning exposure device 14 has a linear light source 26 in a light-shielding box 30 and a same-magnification fiber lens array 28 directly below it. Scanning direction (arrow B direction or C direction) with switchable filter 32 and shutter 33
A light source unit 34 that can be reciprocated and a squeeze roller 36 are integrally constructed, and a drive screw 38 that is a driving means for the light source unit 34 and its driving source 4 are integrally configured.
0 and a transmission means 42 for transmitting the driving force of the drive source 40 to the drive screw 38.

The linear light source 26 is not particularly limited, and various types such as fluorescent lamps and halogen lamps can be used as long as they have a sufficient amount of light.

The filter 32 is composed of color filters of three primary colors, for example, R (red), G (green), and B (blue-violet), and is configured to be switched depending on the color plate film loaded.

As shown in FIG. 3, the squeeze roller 36 is a roller for releasing residual air when the photosensitive material A and the color plate film S are brought into close contact with each other using an overlay sheet 44, which will be described later. At times, it moves downward, presses the overlay sheet 44 and the photosensitive material A1-color film S against the photosensitive material holder 46 by means such as a spring, and moves in the direction of arrow B or C in FIG.

In the plate inspection device 10, such a scanning exposure device 14 is used.
A color plate film loading device 100 of the present invention is arranged below.

The color plate film loading device 100, as shown in FIG.
The drawer body 16 is composed of a front plate 48 with a handle 47 and a bottom plate 50 having an opening 49 into which the photosensitive material holder 46 is fitted, and is supported by a U-shaped member 104 fixed on the bottom plate 50. It is substantially fixed in a predetermined position.

As shown in FIG. 5, this drawer body 16 is configured to be able to be pulled out from the housing 12 by a handle 47 in a direction substantially perpendicular to the scanning direction.

FIG. 6 is a plan view of the color plate film loading device 100 of the present invention, and FIG. 7 is a cross-sectional view taken along the line ■-■.

The color plate film loading device 100 of the present invention basically includes a base 56 that is substantially fixed at a predetermined position, and a positioning bin 58 that defines the loading position of the color plate film S placed on the base 56. , and a magnetic sheet 59 as a fixing member for fixing the color plate film S positioned and loaded in the positioning bin 58 to the base 56.

The base 56 is usually made of a material that can attract a magnet, such as iron, stainless steel, or a material in which iron powder or the like is dispersed in various resins.

As shown in FIG. 8, legs 108 and rod-shaped bodies 106 are arranged at both ends of such a base 56. As shown in FIG.

In the illustrated example, the base 56 is such that the rod-shaped body 108 is connected to the bottom plate 5.
Through hole 1 formed in U-shaped member 104 fixed at 0
04a and supported by the legs 108, it is supported by the U-shaped member 104 so as to be movable up and down. Further, at the bottom of the base 56, the recess 11 of the photosensitive material holding base 46 is provided.
Taper hole 10 corresponding to taper bin 114 arranged in 2
2 is formed.

The illustrated color plate film loading device 100 is slightly lifted by the rising photosensitive material holder 46 when the photosensitive material and the color plate film S are brought into close contact with each other, and the tapered bin 114 of the photosensitive material holder 46 is slightly raised. is inserted into the tapered hole 102 of the base 56 and fitted into the recess 112 of the photosensitive material holding table 46. Here, the chamber hole 102 of the base 56 and the tapered pin 114 of the recess 112 of the photosensitive material holding table 46 constitute positioning means of the present invention.

Therefore, even if the color plate film loading device 100 is slightly misaligned when loading the color plate film S, or even if the photosensitive material holding table 46 is slightly misaligned, the taper holes 102 and the taper bins 114 arranged on both sides are fixed. The positional deviation is suitably adjusted at , and the photosensitive material holder 46 is always fitted into the recess 112 at a predetermined position. Therefore, the photosensitive material A fixed on the photosensitive material holder 46 and the color plate film S positioned by the positioning bin can be brought into close contact with each other while always accurately aligned.

Incidentally, such alignment is described in detail in Japanese Patent Application No. 83-314193 filed by the present applicant.

A positioning bin 58 for defining the loading position of the color plate film S is arranged on the top of the base 56.

A positioning hole is usually formed in the color plate film S for positioning during production of a printing original plate.

The color plate film loading device 100 of the present invention has the positioning bin 58 corresponding to the positioning hole of the color plate film S, so that the color plate film S is always loaded at a predetermined position of the color plate film loading device 10°. becomes possible.

The positioning bins 58 are not particularly limited, and their shape, number, arrangement position, etc. may be determined as appropriate depending on the size of the color proof to be produced and the color plate film S to which they are applied.

In the color plate film loading device 100 of the present invention, in addition to the positioning bin 58, the color plate film S, which is positioned by the positioning bin 58 and loaded at a predetermined position on the base 56, cannot be removed from the positioning bin 58. The base 5 is preferably
A magnet sheet 59 for fixing to 6 is arranged.

As shown in FIG. 7, the magnet sheet 59 is rotatably supported by a method not shown at the corner of the base 56 on the side opposite to the color plate film S loading side, and the base 56 and the magnet sheet 59 are connected to each other. sandwiching the color plate film S with the base 56.
The color plate film S is preferably attached to the base 5 by being adsorbed to the base 5.
6.

Various known materials can be used as the magnet sheet 59, and there is no particular limitation.

Further, in the illustrated example, the magnetic sheets 59 are arranged at two locations between the positioning bins 58, but the present invention is not limited to this, and the magnetic sheets 59 are arranged as one sheet having openings corresponding to the positioning bins. magnetic sheet arranged over the entire surface of the base 56, positioning bin 58
Various types, such as those in which a large number of magnetic sheets are arranged between them, are applicable.

Further, the arrangement position of the magnet sheet 59 on the base 56 is not limited to the corner of the illustrated example;
6 and the magnet sheet 59 may suitably hold the color plate film S therebetween.

Various methods can be used to rotatably fix the magnet sheet 59 to the base 58, such as a method using a flexible adhesive tape and a method using a hinge.

By having the above-described configuration, the color plate film loading device of the present invention not only prevents the color plate film S from being accidentally removed from the color plate film loading device, but also prevents the color plate film S from being exposed to light when it comes into close contact with a photosensitive material, which will be described later. The color is also applied during pushing up by the material holding table 46, driving the color plate film supporting member (described later, but in this embodiment, it is an overlay sheet) after loading the color plate film S, and adhering to the overlay sheet. The plate film S does not come off the positioning bin 58, and the color plate film S and the photosensitive material can always be brought into close contact with each other accurately.

Preferably, a tapered pin 114 is disposed in the recess 112 of the photosensitive material holding table 46, a corresponding taper hole 102 is formed in the base 56, and the above-mentioned taper pin 114 is supported on the roughly U-shaped member 104 so as to be movable up and down. With this structure, the color plate film loading device 100 is always fitted into the recess 112 of the photosensitive material holder 16 at a fixed position, and accurately loads the photosensitive material A and the color plate film S fixed on the photosensitive material holder 46. This makes it possible to align and make close contact.

Note that in the present invention, the fixing member is not limited to a magnetic sheet; for example, the base 65 may be formed of a magnet, and a flexible metal sheet may be attracted to this to fix the color plate film S. etc., various types are applicable.

In the example shown in FIG. 4, in addition to the color plate film loading device 100, supporting members 51a are provided before and after the opening 49 of the drawer body 16.

51b, 51c and 51d are erected.

These support members 51a to 51d have sprocket gears 53.
a, 53b, 53c, and 53d are rotatably supported, and a sprocket gear 53a.

A roller 52a is rotatably supported between the sprocket gears 53b, and a roller 52b is rotatably supported between the sprocket gears 53c and 53d.

Furthermore, a chain 54 is stretched between the sprocket gears 53a and 53d, and a chain 55 is stretched between the sprocket gears 53b and 53c. This chain 54
A fixing means is disposed at 55 and 55 to support the overlay sheet 44, and the above-mentioned color film loading device 100
The color plate film S loaded in the color plate S can be turned upside down.

FIG. 9 shows such sprocket gears 53a, 53d.
, shows a schematic diagram of the chain 54 and overlay sheet 44.

Incidentally, since the sprocket gears 53b, 53c and the chain 55 have similar configurations, their explanations will be omitted.

The overlay sheet 44 is composed of a colorless and transparent sheet 44a and lead rods 44b and 44c arranged at both ends of the overlay sheet 44 in the reversal direction indicated by arrow a.

In addition, as shown in FIG. 9, the sprocket gear 53
A chain 54 is hung between a and 53d.

A fixing member 54b, a fixing member 54c, and a fixing member 54d for supporting the lead rods 44b and 44c of the overlay sheet 44 on the chain 54 are arranged on the chain 54, and are further fixed to the fixing member 54c via a rivet 54e. A member 54f is supported.

Here, the rivet 54e passes through the long hole 54g and supports the fixing member 54f on the fixing member 54c.
Further, a spring 54h is disposed between the fixing member 54d and the fixing member 54g, and biases the fixing member 54f in the direction indicated by the arrow.

The overlay sheet 44 has a chain 54 (
and a chain 55), making it reversible.

Here, as mentioned above, the fixing member 54f is the spring 5.
Since the overlay sheet 44 is biased in the direction of the arrow at 4h, the overlay sheet 44 is always kept under good tension when the chain 54
(and chain 55).

As shown in FIG. 5, when the drawer body 16 is pulled out from the housing 12 of the plate inspection device 10 and the color plate film S is set in the color plate film loading device 100 of the present invention, the overlay sheet 44 is It comes to the lower side of the film S and supports the lower surface of the color plate film S. Even after the color plate film S is set and the color plate film loading device 16 is loaded into the housing 12 as shown in FIG. 2, the overlay sheet 44 continues to support the color plate film S for a while.

As shown in FIG. 10a, when the photosensitive material holder 46 on which the photosensitive material A is closely fixed rises and approaches a predetermined distance at which the color plate film S does not sag significantly, a drive system circuit (not shown) 52a in the direction of the arrow in the figure, the overlay sheet 44 is reversed, and the tob
As shown in the figure, the color plate film S is placed above the photosensitive material A, and the color plate film S is further covered.

Next, the photosensitive material holder 46 is further raised, and as described above, the color plate film S is placed on the photosensitive material A suctioned and fixed on the photosensitive material holder 46, with the overlay sheet 44 in the state shown in FIG. Fix tightly.

Thereafter, scanning exposure is performed by the scanning exposure device 14. After the exposure, when the photosensitive material holding table 46 is lowered to the position shown in FIG.
2a rotates in the direction of the arrow in the figure, and the overlay sheet 4
4 is turned over again, separates the color plate film S and the photosensitive material A which are in close contact with each other, and supports the lower surface of the color plate film S again, as shown in FIG. 10c.

As described above, the color film loading device 100 of the present invention, the overlay sheet 44, and the photosensitive material holding table 46 constituting the contact device 18 have a large number of small holes and grooves (not shown), and air is pumped through these small holes and grooves. Vacuum pump Bo to extract
a and a vacuum device 6o consisting of its piping Sob and the like.

The photosensitive material holding table 46 is configured to be movable up and down as described above, and is in the position shown in FIG. When scanning exposure is carried out, it is raised to the position shown in FIG. 3.

The concave portion 112 of the photosensitive material holder 46 is provided with the tapered bin 114 as described above, and fits perfectly into the tapered hole 102 provided in the base 56 of the color film loading device 100, so that the photosensitive material holder 46 and The positioning pin stand 56 can be accurately aligned, and the photosensitive material A and the color plate film S can be accurately positioned.

In the plate inspection device lO shown in FIG.
A photosensitive material supply device 2° is arranged on the side of the photosensitive material supply device 2°.

The photosensitive material supply device 20 has a magazine 74 in which the photosensitive material A is housed in a roll shape removably attached therein.
An opening/closing lid 75 is provided on the outside of the magazine cover 4.

Slit 74 at the outlet for photosensitive material A of magazine 74
A take-out roller 76a corresponds to a.

A flow b is provided, and the take-out roller 76a is movable upward, and when replacing the magazine, moves upward and removes the magazine 74.
The photosensitive material A slightly protruding from the slit 74a can be easily inserted between the take-out rollers 76a and 76b, and after being inserted, it can be moved downward and securely held.

A cutter 7 is installed downstream of these take-out rollers 76a and 76b.
8 is arranged, and when the leading end of the photosensitive material A is adsorbed and conveyed by the conveying means 62 of the contacting device 18, it is cut to a required length.

A conveyance means 62 is arranged between the photosensitive material supply device 20 and the photosensitive material holding table 46.

The conveyance means 62 is for sucking the leading end of the photosensitive material A in a direction substantially perpendicular to the scanning direction and conveying it to a predetermined position on the photosensitive material holding table 46. In FIG. It consists of suction cups 62a, 62a, -=-, a supporting member 62b thereof, a wire 62c as a moving means, rollers 62d, 62d, and a driving source (not shown).

Further, the conveyance means 64 for conveying the exposed photosensitive material A from the photosensitive material holding table 46 includes nip rollers 64a, 64b, 6
Consists of 4c.

Further, a vapor shutter 72 is provided on the partition wall 70 between the conveyance means 64 contact device 18 and the switch pack mechanism 22.

The light-shielding film 68 is opened and closed by its driving source 68a (FIG. 2), but it is closed at least when the color film loading device 16 is pulled out, and the vapor shutter 72 is opened and closed by its driving source 72a, but it is closed when the color film loading device 16 is pulled out. It is preferable to open it only when the emotional photonic material A is being transported.

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

The exposed photosensitive material A conveyed from the conveyance means 64 is transferred to the nip rollers 80a and 80b.
b and the nip belt conveyors 82a and 82b, the photosensitive material A descends, and the rear end of the photosensitive material A reaches the nip roller 8.
0a, 80b, the switching guide 84 is switched, and the nip roller 80a is stopped.

80b and nip belt conveyor 82a.

82b is reversed and the photosensitive material A is transported to the 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 drying device 92 dries the material A, 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 90,
A replenisher storage section 96 is provided below 91 to store a supply bottle of replenisher.

The color plate film loading device and the plate inspection device to which the same is applied according to the present invention are basically constructed as described above, and their functions will be explained below.

When the start button of the plate inspection device 10 (not shown) is input, the photosensitive material A is taken out from the magazine 74 of the photosensitive material supply device 20 by the take-out rollers 76a, 76b, and its leading end reaches the position of the suction cup 62a of the conveying means 62. Then, the tip of the suction cup 62a is attracted to the photosensitive material, the suction cup 62a rises a little, and the photosensitive material A is conveyed.

When the amount of photosensitive material A pulled out reaches a size corresponding to the color plate film S, the conveying means 62 stops, the cutter 78 cuts the photosensitive material A, and the conveying means 62 moves again to move the photosensitive material holding table 46 to a predetermined position. The photosensitive material A is conveyed to the position and stopped, and the photosensitive material A is placed on the photosensitive material holding table 46.

Next, the vacuum device 60 is operated to suck the photosensitive material A to a predetermined position on the photosensitive material holding table 46 and fix it in close contact therewith.

On the other hand, as shown in FIG. 5, the drawer body 16 is pulled out, and as shown in FIG. It is loaded and fixed on the base 56 with the magnet sheet 59.

At this time, the overlay sheet 44 is on the lower side and supports the color plate film S.

As shown in FIG. 2, when the drawer body 16 is completely attached to the housing 12 of the plate inspection device 10, the light shielding film 68 is opened and the photosensitive material holding table 46 is raised.

As shown in FIG. 10a, when the photosensitive material holding table 46 rises to a predetermined position, the sprocket gear is rotated by a drive source (not shown), and the overlay sheet 44 is reversed to form a color plate as shown in FIG. 10b. Cover the upper side of the film S.

During this time, the photosensitive material holding table 46 has been raised, and as shown in FIG. It stops at a position where all three sheets make sufficient contact.

Then, the vacuum device 60 suctions and tightly fixes the photosensitive material A, the color plate film S, and the overlay sheet 44 on the photosensitive material holding table 46, but furthermore, the scanning exposure device 14 squeezes the photosensitive material A, the color plate film S, and the overlay sheet 44 in order to completely fix them in close contact with each other. Roller 36 squeezes the upper side of overlay sheet 44 in the direction of arrow B.

In this way, the light source unit 34 moves in the direction of the arrow C from above the photosensitive material A, the color plate film S, and the overlay sheet 44, which are sufficiently tightly fixed, to perform scanning exposure. At this time, a color filter corresponding to the color plate film S is set in the filter 32.

After the exposure, the light source unit 34 and the squeeze roller return to their original positions, and the photosensitive material holding table 46 begins to descend to a predetermined position as shown in FIG.
0 releases the suction contact between the color printing film S and the overlay sheet 44, the sprocket gear rotates again in the direction of the arrow in the figure, the overlay sheet 44 is reversed, and the 10th c.
As shown in the figure, the color plate film S is separated from the photosensitive material A which is being suctioned and fixed by a vacuum device 60, and the lower surface of the color plate film S is supported again.

When the photosensitive material holder 46 comes below the light shielding film 68, the light shielding film 68 closes and the photosensitive material A is shielded from light.

Subsequently, when another color plate film S is to be exposed, the photosensitive material holder 46 stops at a predetermined position. Thereafter, the drawer body 16 is pulled out and the color plate film S is replaced.

In this way, scanning exposure is repeated multiple times, for example, three times,
All the images of the Y, M%C plate and the black plate film are formed on one sheet of photosensitive material A. Of course, 7% M, C,
It may be only one image of a blackout version or only images of a plurality of versions.

When the necessary exposure is completed, the photosensitive material holding table 46 returns to its original position, the vacuum device 6o releases the suction fixation of the exposed photosensitive material A, and the nip roller 64a of the conveying means 64 moves the tip of the exposed photosensitive material A. When nipping and conveying is started, the paper shirt tough 2 is opened, and the photosensitive material A is conveyed from the contact device 18 to the switchback mechanism 22 by the conveying means 64. When the paper is completely fed, the paper shutter 72 closes.

The photosensitive material A is nipped and conveyed by nip rollers 80a and 80b and continues to descend, and is transferred to nip conveyors 82a and 82.
b, but the rear end is passed through the nip rollers 80a, 80
When reaching 0b, the nip rows y80a, 80b and nip conveyors 82a, 82b stop.

Here, the switching guide 84 switches the conveyance path, the nip rollers 80a, 80b, and the nip conveyor 82a.
, 82b reverses and starts moving, and the photosensitive material A is transferred to the processing device 2.
Send it to 4.

In the processing device 24, the photosensitive material A is developed in a developing tank 86, bleached and fixed in a bleaching/fixing tank 88, and washed in washing tanks 90, 9.
After being sufficiently washed with water in step 1, it is sufficiently dried in a drying device 92 and sent out to a take-out tray 94 as a color proof.

The color proof thus obtained is suitable for inspection of the photolithographic printing process in terms of tone and quality.

The color plate film loading device according to the present invention is basically constructed as described above, but the present invention is not limited to this, and various improvements and designs may be made without departing from the gist of the present invention. Of course, changes are possible.

<Effects of the Invention> The color plate film loading device of the present invention includes a base having a positioning means with a photosensitive material holding table that can be raised and lowered and on which a photosensitive material that can be pulled out to the outside is suction-fixed, and a photosensitive material that is formed on the base. It has a positioning pin and a fixing member such as a magnetic sheet for securely fixing the loaded color plate film. Therefore, it is possible to load the color plate film S into a predetermined position accurately and easily, and even when it comes into close contact with a photosensitive material, the color plate film S can always be stacked at a predetermined position on the photosensitive material and brought into close contact. is possible.

In addition, since the color plate film is securely fixed to the support base by the fixing member, when the color plate film is brought into close contact with the photosensitive material after replacing the color plate film, the 9-movement of the color plate film support member and the The color plate film does not come off the positioning bin as the photosensitive material holder rises, and exposure can always be performed with the photosensitive material and color plate film in close contact with each other.

Furthermore, by making the heights of the positioning pin and the fixing member substantially equal, it is possible to prevent damage to the overlay sheet by the positioning pins due to air removal by a squeeze roller or the like during close contact.

[Brief explanation of the drawing]

FIG. 1 is a schematic cross-sectional view of a plate inspection device to which a color plate film loading device of the present invention is applied. FIG. fi2 is a schematic partial vertical cross-sectional view of the plate inspection device shown in FIG. 1. FIG. 3 is a schematic partial vertical cross-sectional view showing the state of close contact between the color plate film and the photosensitive material of the plate inspection device shown in FIG. FIG. 4 is a perspective view of the drawer of the plate inspection device shown in FIG. 1. FIG. 5 is a schematic partial vertical cross-sectional view showing a state in which the drawer body shown in FIG. 4 is pulled out in the plate inspection apparatus shown in FIG. 1. FIG. 6 is a plan view of the color plate film loading device of the present invention. FIG. 7 is a sectional view taken along the line ■--■ of the color plate film loading device of the present invention shown in FIG. FIG. 8 is a schematic diagram showing a state in which the color plate film loading device of the present invention shown in FIG. 6 is fixed to the drawer body shown in FIG. 4. FIG. FIG. 9 is a schematic diagram showing an overlay sheet placed on the drawer body shown in FIG. 4. 10a, 10b, and 10c are schematic cross-sectional views showing different functions of the overlay sheet applied to the plate inspection device shown in FIG. 1. FIG. Explanation of symbols 10... Plate inspection device, 12-... Housing, 14... Scanning exposure device, 16... Color film loading device, 18... Contact device, 20... Photosensitive material supply device , 22... Switch pack mechanism, 24... Processing device, 26... Linear light source, 28... Fiber lens array, 30... Box body,... Filter,... Shutter, 34 ...Light source unit, 36...Squeeze roller, 38...Drive screw 40...Drive source, 42...Transmission means, 44...Overlay sheet, 44a...Sheet, 44b, 44c. ...Lead rod, 46...Photosensitive material holding stand, 48...Front plate, 49.65...Opening, 50...Bottom plate, 51a, 51b, 51c, 51dl-support member, 52
a, 52 b...O-ra, 53a, 53b, 53
c, 53d... Sprocket gear, 54.55... Chain, 54b, 54c, 54d, 54f... Fixing member, 55e... Rivet, 54g... Long hole, 54h... Spring, 56 ...Base, 58...Positioning bin, 59...Magnetic sheet, 60...Vacuum device, 62.84...Transporting means, 62.64...Transporting means, 66...Top Plate, 68... Light-shielding film, 70.83... Partition wall, 72... Vapor shutter, 74... Magazine, 76a, 76b... Take-out roller, 78... Cutter, 80 a, 80 b **-Nip roller, 82a, 8
2b... Nip belt conveyor, 84... Switching guide, 86... Developing tank, 88... Bleaching/fixing tank, 90.91... Washing tank, 92... Drying device, 94. ... Removal tray, 96 ... Replenisher storage section, 100 ... Color film loading device, 102 ... Tapered hole, 104 ... U-shaped member, 106 ... Rod-shaped body, 108 ... - Foot body, 110... Spring, 112-... Concavity, 114... Taper pin, A... Photosensitive material, S... Color plate film patent applicant Fuji Photo Film Co., Ltd.
8 F I G, 10a FIG, 9 F I G, 10c +A Proceedings (self-motivated) 07328/1999 1, Display of the case 1999 Patent Application No. 45972 2, Name of the invention Color plate film loading Relationship with the device amendment case Patent applicant name (520) Fuji Photo Film Co., Ltd. Agent 101 Telephone 864-44'98 Address 3-2-2 Iwamoto-cho, Chiyoda-ku, Tokyo Specification subject to amendment Column 6 of "Detailed Description of the Invention", Contents of the Amendment (1) The statement "Japanese Patent Application No. 1983" on page 6, line 13 of the specification is amended to "Japanese Patent Application No. 1984 J. In the 9th line of the 7th page, the statement ``It is considered as a state'' is amended to ``It is a state.'' (3) The description of "Photosensitive materials section" on the 9th line of page 9 is corrected to "Photosensitive materials". (4) On the 6th line of page 21, after the statement ``is.'', it says ``Furthermore, the color plate film S may be fixed by fixing one end of the punched cover film with tape or the like. Insert the statement "It is possible." (5) The statement "54d" on the 8th line of page 23 is corrected to "54d". (6) "64" in the 7th line of page 28 was changed to "6".
4 and''. (7) The statement "62a" on the 10th line of page 30 is corrected to "62a".

Claims (1)

[Claims] (1) A retractable color plate film loading device used for positioning and tightly fixing at least one color plate film on a photosensitive material suctioned and fixed on a photosensitive material holding table that can be raised and lowered, , a plurality of positioning pins for positioning the color plate film at a predetermined position; a base provided with the positioning pins and having positioning means for positioning with the photosensitive material holding base; A color plate film loading device comprising a fixing member for fixing the color plate film positioned with a positioning pin to the base.