JPH0114028Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a contact printing machine used in a photolithography process.

In conventional contact printing machines, before the film original plate and photosensitive plate material are brought into close contact with each other, they are first superimposed on a printing exposure plate.
As is well known, film originals are very flexible, so when placing the original on a printing exposure plate,
It is normal for the original board to have some sagging or bulging. For this reason, in the past, such sagging and bulges in the original sheet were manually corrected.

However, because it is not possible to know the degree of abrasion on the original film by hand, sometimes
Excessive abrasion sometimes caused damage to the original plate, and sometimes the positioning pin holes provided in the original plate were enlarged, causing errors in the overlapping of the original plate and plate material.

For this reason, there has been a demand for the development of a new contact printing machine that can correct such sagging and bulging of the original sheet without damaging the original sheet.

This idea was devised in response to this demand, and is a new contact printing machine that can correct the sagging and bulging of the original that occurs when placing the original on the printing exposure plate without damaging the original. The purpose is to provide

That is, in this invention, a running body is disposed above the printing exposure plate so as to be able to reciprocate along the upper surface thereof, and a rubber sheet roller wrapped with a rubber sheet whose terminal end is fixed to the base is mounted on the running body. By holding the rubber sheet and moving the traveling body forward from the standby position, the rubber sheet is fed out from the rubber sheet roller, and the rubber sheet is placed on the printing exposure plate with one side fixed, and overlapped with each other. In a contact printing machine, the upper surfaces of the film original plate and the photosensitive plate material are covered, and the rubber sheet is wound up on the rubber sheet roller by returning the traveling body to a standby position and moving the rubber sheet above the printing exposure plate. A traveling body other than the aforementioned traveling body is disposed in front of the aforementioned traveling body so as to be able to reciprocate along the upper surface of the printing exposure plate, and a belt-shaped brush is attached to the other traveling body, and the lower end of the brush is attached to the other traveling body in a lowered position. It is attached so that it can move up and down so that its edges are in contact with each other over the entire width of the film original plate with a contact pressure that does not damage the surface thereof, and in the raised position, the lower edge part is separated from the surface of the film original plate. A cam mechanism is provided on the other traveling body to move the band-shaped brush upward when they approach each other, and after the original film is placed on the printing exposure plate, only the other traveling body is moved from the standby position. The film original plate and the photosensitive plate material are then superimposed on each other on the printing exposure plate, and then the traveling bodies are driven forward from the standby position, and after close contact printing, both traveling bodies are returned to the standby position at the same time. This invention relates to a contact printing machine characterized by being provided with a drive control mechanism for running the machine.

Hereinafter, the specific configuration of this invention will be explained based on the drawings.

FIG. 1 shows a side view of essential parts of an embodiment of this invention, and FIG. 2 is a front cross-sectional view of the left part of the device of this embodiment when viewed along line A-A' in FIG. 1 in the direction of the arrow. shows.

In this embodiment, a film original plate 1 (hereinafter referred to as an original plate) and a photosensitive plate material 2 (hereinafter referred to as a plate material) are overlapped at a predetermined position on a printing glass plate (printing exposure plate) 3. In this case, to fix the original plate 1 and the plate material 2 on the baked glass plate 3, one side 1' of each of the original plate 1 and the plate material 2,
This is done by engaging a pin hole provided at 2'.

The printing of the original plate 1 onto the plate material 2 is carried out by placing a retractable rubber sheet 5 over the printing plate 2 and vacuum-adhering it, and then exposing the printing glass plate 3 to light from the bottom surface. Although the printing light source is omitted in the drawing, in this embodiment the light source is arranged below the printing glass plate 3.

To remove the slack or bulge in the original plate 1 that occurs when placing the original plate 1 on the baked glass plate 3, place a strip 6 having a length that spans the entire width of the original plate 1 on the baked glass plate 3 while in contact with the original plate 1. This is done by moving in parallel. The direction of movement of the strip 6 at this time is regulated in a direction B perpendicular to one side 1' of the original plate 1 fixedly placed on the baking glass plate 3 in order to effectively level the original plate 1. .

For this purpose, this band-shaped body 6 is attached to the baked glass plate 3.
The running body 7 is mounted so that its lower end edge 6' contacts the entire width of the original plate 1.

As such a traveling body 7, an appropriate one may be considered, but in this embodiment, a baked glass plate 3 is used.
It is composed of a bridge 8 installed above and a carrier 9 that supports both legs 8' of the bridge 8 and moves along the baked glass plate 3.

The carrier 9 has a guide rail 1 disposed on the side of the baked glass plate 3 in parallel with the plate surface.
The vehicle is made to run above 0. That is, the carrier 9 is provided with a flanged upper guide roller 11 and a lower guide roller 12 that support the guide rail 10 vertically, and the lower end of the carrier 9 is driven along the guide rail 10. The end chain 13 is connected to the end chain 13.
Moreover, this endless chain 13 has a pair of front and rear sprockets 1 attached to the main machine frame 14.
5 and 16, and is driven by a motor 17. Further, the upper guide roller 11 is integrally connected to the other guide roller (not shown), which is disposed opposite to each other on both left and right sides of the baked glass plate 3, via a rotation shaft 18. This is intended to prevent the entire traveling body 7 from twisting by integrally connecting the left and right carriers 9.

When traveling while the strip 6 is in contact with the original plate 1, consideration must be given to scratches on the original plate 1. Therefore, the strip 6 is made of a material that is softer and stiffer than the original plate 1, such as a brush made of horse tail hair. Also, the contact pressure of the strip 6 with the original plate 1 must be taken into consideration.
Further, when returning the strip 6 to its original standby position, it is necessary to prevent the lower edge 6' of the strip 6 from coming into contact with the original plate 1 or the printing plate 2.

For this reason, in this embodiment, both legs 8' of the bridge 8 are fitted into guide grooves 9' formed in the carrier 9 so as to slide up and down, and in the forward stroke of the traveling body 7, the strip 6 is held at a fixed position in contact with the original plate 1, and on the return trip, the strip 6 is held at a fixed upper position away from the original plate 1 and the plate material 2.

That is, as shown in FIG. 2, a stopper 19 provided at the upper end of the carrier 9 inside the leg 8' of the bridge 8 regulates the contact position of the strip 6 with the original plate 1. , plate material 2
The running body 2 that supports the rubber sheet roller 20 and the presser roller 21 is held at a constant upper position.
This is done by pushing up the cam follower 24 installed on the leg portion 8' of the bridge 8 using the second cam plate 23.

In this case, in order to ensure the vertical movement of the bridge 8, a tension coil spring 25 is stretched between the leg 8' and the carrier 9 to urge the bridge 8 downward.

These traveling bodies 7 and 22 are operated as follows.

In the apparatus of this embodiment, the original plate 1 is first placed on the baked glass plate 3. Therefore, among the traveling bodies 7 and 22, only the traveling body 7 to which the strip body 6 is attached is first moved forward. At this time, the cam follower 24 separates from the cam plate 23 of the other traveling body 22 at point P, so the entire bridge 8 is lowered by its own weight and the biasing force of the tension coil spring 25, as shown in FIG. It comes into contact with the stopper 19 shown and stops. Therefore, after passing the point P, the strip 6 is moved in the direction of the arrow B while in contact with the original plate 1.
As a result, bulges, sagging, etc. of the original plate 1 are smoothed out, and at the same time, dust adhering to the surface of the original plate 1 is also cleaned. Further, the contact pressure of the strip 6 against the original plate 1 at this time is adjusted by adjusting the position of the stopper 19.

When the flattening of the original plate 1 by the strip 6 is completed,
Next, a plate material 2 is placed on this original plate 1. Then, this time, the traveling body 22 equipped with the rubber sheet roller 20 and the presser roller 21 moves forward and covers the plate material 2 with the rubber sheet 5. Then, this traveling body 22 joins with the other traveling body 7 that is placed on standby and stops. At this time, the cam plate 23 of the traveling body 22 pushes up the cam follower 24 attached to the leg portion 8' of the bridge 8 as shown by the two-dot chain line in FIG. 1, so the bridge 8 is pushed up. The strip 6 is also held at a constant upper position away from the plate material 2. When the close contact baking is completed, these traveling bodies 7 and 22 are returned to the original standby position as one body. Therefore, in this case, the lower edge 6' of the strip 6 is returned without contacting the printing plate 2.

The traveling body 22 is made to travel on the guide rail 10 by a mechanism similar to that of the carrier 9, and is also driven by rotating an endless chain 13' through a pair of sprockets 15' and 16'. It is operated by rotationally driving the hung thing with a motor 17'.

The inside of the bridge 8 is formed as a duct 8'' as shown in FIG.
An air intake port 26 is provided adjacent to and in parallel with the band-shaped body 6 to suck in dust thereon. This intake port 26 is connected to an exhaust port 27 provided on the leg portion 8' of the bridge 8.
It is connected to a vacuum pump P ₀ (not shown) via.
Thereby, dust attached to the original plate 1 can be removed by suction, and the quality of the printing plate can be improved.

Furthermore, when the strip 6 travels in contact with the original plate 1, static charges may be accumulated on the original plate 1 in some cases.
In this case, when the plates 2 are stacked or separated, electrostatic sparks are generated, which may impair the quality of the image printed on the plates 2. Therefore, in this invention, a static electricity removing device 28 for eliminating static charges accumulated on the original plate 1 is provided alongside the bridge 8. The electrode used in the static electricity removing device 28 can be made of carbon fiber having the same flexibility as the strip 6, so it can be mixed in the strip 6 and used for leveling the original plate 1. At the same time, it is also possible to eliminate the accumulation of static charges.

Although one embodiment has been described above, it is clear that this invention can also be applied to an arrangement in which the printing light source is disposed above the original plate 1.

Since this invention is constructed as described above, it is possible to remove the sag or bulge of the original plate that occurs when the original plate is placed on a baked glass plate (printed exposure plate) without damaging the original plate. Further, in this invention, since a mechanism for sucking and removing dust adhering to the surface of the original plate and a static electricity removing device are also provided, it is possible to obtain a printing printing plate of good quality. In addition, with this invention, it is possible to automatically smooth out bulges, sagging, etc. of the original board, so the original board,
The effect can be further improved when applied to a printing machine that automatically supplies and discharges plate materials.

[Brief explanation of the drawing]

FIG. 1 shows a side view of a main part of an embodiment of this invention, and FIG. 2 shows a front cross-sectional view of the left part of this embodiment when the line A-A' in FIG. 1 is viewed in the direction of the arrow. show. 1...Film original plate, 2...Photosensitive plate material, 3...
...Printed exposure plate (baked glass plate), 6...Band-shaped body,
7...Running body.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A rubber device in which a running body is disposed above the printing exposure plate so as to be able to reciprocate along the upper surface thereof, and a rubber sheet is wrapped around the running body, the end of which is fixed to the base. By holding the sheet roller and moving its traveling body forward from the standby position, the rubber sheet is fed out from the rubber sheet roller, and the rubber sheet is placed on the printing exposure plate with one side fixed to each other. In a contact printing machine, the rubber sheet is wound around the rubber sheet roller by covering the upper surfaces of the overlapping film original plate and photosensitive plate material, and by returning the traveling body to a standby position and moving the rubber sheet. Above the exposure plate, a traveling body other than the aforementioned traveling body is disposed in front of the aforementioned traveling body so as to be able to reciprocate along the upper surface of the printing exposure plate, and a band-shaped brush is placed on the other traveling body in a lowered position. At the upper position, the lower edge portion contacts the entire width of the film original plate with a contact pressure that does not damage the surface thereof, and in the raised position, the lower edge portion is moved away from the surface of the film original plate. A cam mechanism is provided on the traveling body and the other traveling body to move the band-shaped brush upward when they approach each other, and after the film original plate is placed on the printing exposure plate, only the other traveling body is removed. The traveling body is moved forward from the standby position, and then the film original plate and the photosensitive plate material are superimposed on each other on the printing exposure plate, and then the traveling body is caused to travel forward from the standby position, and after contact printing, both the traveling bodies are placed on standby at the same time. A contact printing machine characterized by being equipped with a drive control mechanism for returning to the position. 2. The contact printing machine according to claim 1 of the Utility Model Registration Claim, wherein a strip-shaped brush is provided with an air inlet connected to a vacuum pump to suck out dust on a film original plate. 3. The contact printing machine according to claim 1, which has been registered as a utility model and comprises a belt-shaped brush and a static electricity removing device that electrostatically removes static charges accumulated on the film original plate. 4. The contact printing machine according to claim 1, wherein the electrode for removing static electricity is made of carbon fibers, and the carbon fibers are mixed in a band-shaped brush.