JPH07287308A - Method for positioning original film - Google Patents

Abstract

PURPOSE:To obtain a method for positioning an original film by which the original film is surely kept being positioned and leveling is performed at the time of squeezing on a level block. CONSTITUTION:One end of the original film 16 inserted in the positioning pin 86A of a pin bar 86 is covered with a plate member 162 and the original film 16 does not fall off only by the movement in the axial line direction of the positioning pin 86A. Since the original film 16 is pressed by the plate member 162 at the time of leveling (squeezing) by a squeeze roller, the leveling is sufficiently performed and the contact of each material is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an original film positioning method for superposing and positioning an original film on a photosensitive material placed on a surface plate.

[0002]

2. Description of the Related Art Conventionally, a plate inspection apparatus is provided with a conveying section for conveying and positioning a photosensitive material and a document film which has been subjected to development processing after decomposition and exposure, and a document arranged correspondingly on the table. An exposure unit that exposes the image of the film on the photosensitive material and a processor unit that develops the exposed photosensitive material are provided. An original film is prepared for each color separation component and a set of a plurality of sheets is provided, and the plate inspection preparation apparatus forms a plurality of original films by the exposure section onto one photosensitive material positioned on the surface plate section. Are sequentially exposed.
The exposed light-sensitive material is conveyed from the exposure section to the processor section via the delivery section, and is subjected to development, bleach-fixing, washing with water and drying. The processed light-sensitive material can be checked in advance before the actual printing. Thus, for example, when there is a problem in the color condition, image position, character error, etc. of the photosensitive material, it is possible to correct the original film before printing a large amount on the printing machine.

By the way, as shown in FIG. 7, the original film 170 prepared for each color separation component must be accurately positioned at a predetermined position on the surface plate 174. The original film 170 is positioned by a pin bar 176.

That is, the pin bar 176 is the surface plate 174.
Is attached to the upper surface of a base 178 provided with a hole 178A for fitting with a pin 174A protruding from the pin bar 17
A positioning pin 176A is projected from 6. The positioning pin 176A has a hole 170 in the original film 170.
By inserting A, the original film 170 can be positioned. In this state, the flexible magnet plate 172 is attached to the base 178 and the original film 1.
By magnetically attaching so as to be bridged with 70, the original film 170 is prevented from falling off from the positioning pin 170A.

Here, the original film 170 is a surface plate 17
It is necessary to squeeze on 4 to remove air bubbles and bring them into close contact with the surface plate together with the photosensitive material 180 already placed on the surface plate.

[0006]

However, since the original film 170 is fixed by the magnet 172, the original film 170 cannot be completely squeezed during squeeze, which causes positional deviation (registration error).

In view of the above facts, it is an object of the present invention to provide a method for positioning an original film which can surely hold the original film in a positioned state and can be leveled during squeezing on a surface plate.

[0008]

According to a first aspect of the present invention, there is provided an original film positioning method for superposing and positioning an original film on a photosensitive material placed on a surface plate. A pin bar is arranged at a predetermined position on the surface, and a manuscript film is loaded on the positioning pin of the pin bar, one end of the plate material is fixed to the base surface, and the other end is higher than the upper surface of the manuscript film. By extending to the positioning pin and covering one end of the original film, it is prevented from falling off from the positioning pin, and the range of the tolerance between the original film and the positioning pin of the original film pin bar when squeezing the photosensitive material on the surface plate. It is characterized by allowing movement only within.

[0009]

According to the invention described in claim 1, since the original film which is inserted into the positioning pin of the pin bar and positioned is covered with the plate material at one end without being pressed, the original film has a tolerance with respect to the positioning pin. Movement within the range is allowed. Therefore, it is possible to smooth the squeeze on the surface plate and reliably remove air bubbles and the like, so that flatness is ensured and positional deviation (registration deviation) can be prevented. Further, the original film does not drop off from the positioning pin.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 show a plate inspection making apparatus 10 according to this embodiment. First, the overall configuration of the plate inspection creation apparatus 10 will be described.

As shown in FIG. 1, the plate inspection creation apparatus 10
The magazine loading unit 100 is disposed on the left side surface of the casing 12 in FIG. Two magazines 102 containing the photosensitive material 14 are loaded in the magazine loading unit 100. Photosensitive material 1 drawn from one magazine 102
4, the front end portion of the guide member 4 is pulled out from the magazine 102 substantially upward in FIG. 1, and is turned by the insertion guide in a substantially right-angled direction, and then is conveyed diagonally upward or diagonally downward, and further in the horizontal conveying direction. Is converted. Also,
The photosensitive material 14 drawn out from the magazine 102 is cut into predetermined lengths by a cutter 116.

Photosensitive material 14 whose direction of conveyance is horizontally changed
Is conveyed by the photosensitive material conveying section 26 to a surface plate section 28 disposed adjacent to the magazine loading section 100. The surface plate section 28 is composed of a surface plate 42 for placing and positioning the photosensitive material 14 and a moving mechanism part 43 for moving the surface plate in the vertical direction. As shown in FIG. 4, the surface plate 42 is provided with a plurality of suction holes 42A so that the photosensitive material 14 and the like can be adsorbed and supported. A pair of positioning pins 45 are provided at both ends of a predetermined side of the surface plate 42, and a circular hole 82 and an elongated hole 84 are provided in a positioning plate 88 described later.
It is used for positioning with the original film 16 conveyed onto the surface plate 42 by fitting with. The positioning pin 45 has a cylindrical shape on the base side and a tapered end. Therefore, the circular hole 82 and the long hole 84 can be easily inserted, and after positioning, they can be made to correspond to the cylindrical portion on the base side.

An exposure unit 30 is disposed above the surface plate unit 28 in FIG. 1, and a light source unit 40 of the exposure unit 30 conveys the photosensitive material 14 on a surface plate 42 of the surface plate unit 28. It is configured to reciprocate in a direction orthogonal to the direction.

In the plate image forming apparatus 10 of this embodiment, a processor section 34 is arranged side by side with the platen section 28 via a photosensitive material delivery section 32.

The processor section 34 is composed of developing tanks 46 and 47 partitioned by a partition wall 44, a bleach-fixing tank 48, a processing tank 54 in which washing tanks 50 and 52 are formed, and a drying section 56.

In the processor section 34, the photosensitive material 14 exposed on the surface plate section 28 is subjected to processings such as development, bleach-fixing and washing with water, and then dried and taken out.

The upper side of the processor section 34 in FIG. 1 is a film loading section 36 for loading the original film 16 (see FIG. 2). The film loading section 36 is arranged above the ceiling member 58 of the processor section 34. For this reason, the height dimension of the film loading section 36 is relatively low, and is about the waist position of the worker. Film loading section 36
Is covered by a large lid 24. The large lid 24 is attached via a hinge. Therefore, the large lid 24
Is released by rotating the hinge around the center.
A rectangular hole 60 is provided in the large lid 24, and a small lid 62 is attached via a hinge. As a result, the small lid 62 is configured to be opened by gripping the grip 64 and rotating it from the front side of FIG. The small lid 62 is opened when the original film 16 is loaded into the film loading section 36. A lock mechanism is attached to the periphery of the rectangular hole 60 so that the small lid 62 can be locked in a closed state.

An overlay sheet 66 (see FIG. 2) on which the original film 16 is placed is placed in the film loading section 36.
A frame-shaped support base 68 to which is attached is disposed, and is capable of reciprocating with respect to the surface plate portion 28. That is, the film loading section 36 and the exposure section 30 are communicated with each other by the rectangular hole 70. The rectangular hole 70 is opened when the support base 68 is moved, but is shielded at other times.

As shown in FIG. 5, the support base 68 is
A positioning plate 88 to which a size plate (hereinafter referred to as a pin bar) 86 that positions according to the size of the original film 16 can be attached is attached to the. Pin bar 8
6, a plurality of positioning pins 86A are formed to project, and correspondingly, the original film 16 is provided with a positioning hole 16A, and the positioning pin 8A is provided in this positioning hole 16A.
By inserting 6A, the pin bar 86 and the original film 16 can be positioned.

Here, as shown in FIG. 6, the rectangular plate magnet 160 is attached to the positioning plate 88. Height H of this magnet 160
Is slightly higher than the height dimension J to the upper surface of the original film 16 in the state of being positioned by the positioning pin 86A of the pin bar 86. A plate member 162 made of metal can be magnetically attached to the magnet 160. This plate material 1
The magnet 62 has the same longitudinal dimension along the longitudinal direction of the magnet 160. On the other hand, the dimension of the short side is extended to the position before the positioning pin 86A of the pin bar 86.

Therefore, after mounting the original film 16 on the positioning pins 86A, the plate member 162 is attached to the magnet 160.
By magnetically attaching to one side, one end of the original film 16 can be covered. Due to this coating, the original film 1
No. 6 cannot be removed by at least moving the positioning pin 86A in the axial direction.

However, the force for suppressing the original film 16 does not work, and therefore the original film 16
As for the movement of the positioning pin 86A in the direction perpendicular to the axis, the dimensional tolerance between the positioning pin 86A and the positioning hole 16A is allowed to move.

The positioning plate 88 has a narrow width, and its longitudinal ends are assembled in a groove (not shown) provided in the support base 68.

A rectangular auxiliary material 90 for increasing the thickness is attached to the lower surface of the positioning plate 88 in the vicinity of both ends thereof in the longitudinal direction. A circular hole 82 and an elongated hole 84 penetrating the positioning plate 88 and the auxiliary material 90 are provided at the position where the auxiliary material 90 is attached. In addition,
The short side dimension of the long hole 84 matches the inner diameter dimension of the circular hole 82. The circular hole 82 and the long hole 84 have a role as positioning means for positioning the original film 16 on the surface plate 42 together with the positioning pins 45 provided at both ends of one side of the surface plate 42.

That is, after the pin bar 86 is attached on the positioning plate 88 and the original film 16 is mounted, the supporting base 68 is moved onto the surface plate 42,
When the platen 42 is moved up, the positioning pin 45 of the platen 42 is inserted into the circular hole 82 and the long hole 84, so that the relative positions of the two are determined.

At the time of positioning the platen 42 and the support base 68, the original film 16 is formed on the platen 42 by the photosensitive material 1.
4 will be overlaid. Here, when the overlay sheet 66 is further laid on the original film 16, squeeze is performed by a squeeze roller (not shown), and air bubbles remaining between the surface plate 42 and the photosensitive material 14 and between the materials are exhausted to complete the operation. So-called soaking is performed so as to be in close contact with.

At this time, each material moves in each plane, but even in the original film 16, it is possible to move within the tolerance range between the positioning pin 86A and the positioning hole 16A. , The above-mentioned break-in is surely performed.

In the exposure section 30, the image recorded on the original film 16 is exposed on the photosensitive material 14, and then the support base 68 returns to the film loading section 36 again.

The plate inspection device 10 of this embodiment is a Y plate, an M plate.
The above steps are repeated using each original film 16 that has been color-separated into a plate, a C plate, and a BK (sumi) plate, and there is no error in the layout of the original film 16 before creating a production printing plate, or there is a difference in color. This is a device for inspecting whether there is any error in the characters, and the like. The original film is positioned one sheet at a time, superimposed on the photosensitive material 14 and subjected to multiple contact exposure to make a color photograph in the same state as the printed matter. This is to detect an error in the manuscript film so that the manuscript can be corrected in advance. In this embodiment, in the case of a positive type photosensitive material, the original film 16 is used as the Y plate for the BK (smear) plate and the M plate for the B plate.
The BK (Sumi) plate is overlaid on the K (Sumi) plate and the C plate, respectively, and brought into close contact with the photosensitive material 14 in order, and exposure is performed using B (blue), G (green), and R (red) as filters, respectively. Original film 16 for negative photosensitive material
Y plate, M plate, C plate, and BK (Sumi) plate as photosensitive material 1
4 are sequentially brought into close contact with each other, and exposure is performed by using B (blue), G (green), R (red), and BK (sumi) filters as filters.

As shown in FIG. 1, a control device 38 is disposed below the surface plate portion 28 to control the transfer of the photosensitive material 14, the drive control of the support base 68 of the film loading portion 36, and the like.
Exposure control of the exposure unit 30, instruction of magazine replacement to a notification means (not shown), temperature of the processing liquid of the processor unit 34,
Each control such as the drying temperature and the conveying speed is performed.

Next, the operation of this embodiment will be described. At first,
The processing procedure of the plate inspection creation apparatus 10 will be described with reference to the flowchart of FIG.

When the operation switch is turned on in step 200, the photosensitive material 1 is processed in step 202.
It is determined whether or not the signal indicating that the cutting of the designated length of 4 is completed is input, and when the determination is affirmative, the process proceeds to step 204. In step 204, initial conveyance control of the photosensitive material is performed. That is, the photosensitive material 14 cut into a predetermined length is transferred to the surface plate section 2 by the photosensitive material conveying section 26.
Transport to 8.

In the next step 206, the surface plate standby control is performed, and then in step 208, the document film transport control is performed. That is, the original film 16 is placed on the overlay sheet 66 of the film loading unit 36 and moved onto the surface plate unit 28.

Next, in step 210, exposure standby control is performed, and then steps 212, 214 and 21.
In 6, exposure control is performed. That is, in the case of a positive type photosensitive material, the original film 16 is changed to the Y plate, the BK plate, the M
Photosensitive material 1 by stacking BK plate on plate and BK plate on C plate respectively
4 are sequentially brought into close contact with each other, and exposure is performed through each of B, G, and R filters.

In the case of a negative type photosensitive material, as the original film 16, a Y plate, an M plate, a C plate and a BK plate are used.
4 are sequentially brought into close contact with each other and exposed through B, G, R, and BK filters.

When the exposure is completed, the support base 68 is moved to the film loading section 36 and is on standby, and the step 2
From 16 to step 218, the exposed photosensitive material conveyance control is performed.

Next, at step 220, photosensitive material delivery control is performed. That is, the exposed light-sensitive material is conveyed to the processor unit 34, and in step 222, the development processing (development, bleach-fixing, and water-washing processing) is performed, and then the light-sensitive material 14 that has been dried is processed into the casing 12. It is taken out from the take-out port 22 formed in the.

In the above processing step, the original film 16
When the is mounted on the support base 68, first, the pin bar 86 matching the size of the original film 16 is attached on the positioning plate 88. At the time of this sticking, the accuracy of positioning is not particularly concerned, but it is necessary to maintain this sticking state until the processing of all four color separation originals is completed.

The original film 16 is fitted to the pin bar 86.
When installing the overlay seat 66, the overlay base 66
The lower position of the original film 16 serves as a support for the original film 16. Therefore, the original film 16 can be mounted in the frame of the support base 68.

Here, the positioning pin 86 of the pin bar 86
The original film 16 in which A is inserted has its one end covered with a plate member 162. That is, the plate material 162 is magnetically attached onto the magnet 160 attached to the positioning plate 88, so that the plate material 162 has a slight gap with respect to the original film 16 and the original film 1 is formed.
6 are placed on top. Further, since the tip end of the plate 162 in the short side direction is near the positioning pin 86A,
The original film 16 does not fall off only by moving the positioning pin 86A in the axial direction. Therefore, it is possible to maintain the mounted state on the pin bar 86 without pressing down the original film 16.

The support base 68 having the original film 16 mounted thereon is moved onto the surface plate 42 as described above, and the surface plate 42 is lifted while the overlay sheet 66 is in the upper position by the rotation of the sprocket 92. , Surface plate 4
The positioning pin 45 provided on the second plate is inserted into the circular hole 82 and the long hole 84 of the positioning plate 88. At this time, since the positioning plate 88 has some play with respect to the support base 68, while being guided by the positioning pin 45,
The platen 42 and the positioning plate (that is, the original film 1
Positioning with 6) can be performed.

Here, the positioning pin 45 has a cylindrical shape on the base side and is tapered on the tip end, so that the positioning pin 45 can be easily inserted into the circular hole 82 and the elongated hole 84, and after positioning. Can correspond to the cylindrical part on the base side.

When the platen 42 moves up, the overlay sheet 66 comes into close contact with the original film 16. Then, by rolling the squeeze roller on the overlay sheet 66, air bubbles remaining between the surface plate 42 and the photosensitive material 14 and between the materials are exhausted, so that the materials are brought into close contact with each other. During the squeezing with the squeeze roller, each material may move in each plane. At this time,
As shown in FIG. 7, since the original film 170 was pressed by the flexible magnet 172, this smoothing could not be performed sufficiently.

However, in this embodiment, the pin bar 8 is used without pressing the original film 16 by the plate member 162.
Since it is prevented from falling off from No. 6, it is possible to sufficiently perform the above-mentioned smoothing and improve the adhesiveness of each material.

In this embodiment, the plate 162 and the magnet 160 are separated from each other, but they may be connected by a hinge or the like so that the mounting space of the original film 16 on the pin bar 86 can be opened and closed.

Further, the plate member 162 may be brought into contact with the tip of the positioning pin 86A of the pin bar 86.

[0047]

As described above, the method of positioning the original film according to the present invention has the excellent effects that the original film can be securely held in the positioned state and can be leveled during squeezing on the surface plate.

[Brief description of drawings]

FIG. 1 is a schematic front view showing the internal structure of a plate inspection device.

FIG. 2 is a perspective view of a plate inspection making apparatus.

FIG. 3 is a control flowchart showing the flow of the entire apparatus.

FIG. 4 is a plan view of a surface plate.

FIG. 5 is a perspective view of a support base.

FIG. 6 is a cross-sectional view when the positioning plate of the support base is positioned with the surface plate.

7 is a cross-sectional view showing a conventional structure corresponding to FIG.

[Explanation of symbols]

 10 Plate Inspection Making Apparatus 14 Photosensitive Material 16 Original Film 16A Positioning Hole 32 Photosensitive Material Delivery Section 45 Positioning Pin 68 Support Base 86 Pin Bar 86A Positioning Pin 160 Magnet 162 Plate Material

Claims (1)

[Claims] 1. A method of positioning a document film for stacking and positioning a document film on a photosensitive material placed on a surface plate, comprising pin bars arranged at predetermined positions on a base surface. The manuscript film is loaded on the positioning pins of, the one end of the plate material is fixed to the base surface, and the other end is extended to the positioning pin of the pin bar at a position higher than the upper surface of the manuscript film to fix one end of the manuscript film. By covering it, it was prevented from falling off from the positioning pin, and it was allowed to move only within the tolerance of the positioning pin of the pin bar of the original film when squeezing the original film and the photosensitive material on the surface plate. Original film positioning method.