JPS6344827Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention involves cutting a positive film on which an appropriate image has been formed into a desired size in a photolithography process to create small pieces of a positive film for pasting. Cutting of the small pieces of film in a pasted film for creating a printing plate by contact baking (printing plate), which is created by pasting it on a transparent base film using a film adhesive according to a predetermined layout. This invention relates to a correction tool for flattening and removing burrs generated on edges.

(Prior art) Figure 2: Adhesive glue a is applied to a transparent base film 1.
Using a , an appropriate number of positive films 2 for pasting, which have been cut in advance for each photo character and pattern of the desired size, are partially pasted with the photoresist film side b facing upward, and the pasting film for printing the printing plate is made. is created. The above-mentioned positive film for pasting 2
The cutting edge may have an upward cutting edge 3, a downward cutting edge 4, or a serrated cutting edge, depending on the moving direction and performance of the cutter blade, the film material, etc. burrs occur. The film side of the adhesive film created by pasting such a positive film 2 for pasting onto a transparent film 1 is placed on the photosensitive material surface of a printing plate material (such as a PS plate), and the printing plate is baked. When placed in a frame and subjected to vacuum suction and pressurized contact printing, the tips of the upward edge 3 and downward edge 4 of the pasted positive film 2 are pressed against the surface of the printing plate made of an aluminum plate or the like as a substrate, and are in close contact with it. The area around the edge does not come into precise contact with the printing plate, and therefore, uneven exposure and poor adhesion are likely to cause blurring. Therefore, there is a need for a tool to remove the burrs that cause the above-mentioned troubles.

(Date of invention) The present invention is to inspect the pasted film after the end of photolithography and before starting the printing of the practical printing plate, and while pressing the upward edge 3 from above, rub and crush it, and then Edge 4
provides a tool for flattening film edges by scraping.

(Structure of the invention) The invention is characterized in that it includes a cutting member 6 having a thin plate-like flat cutting edge 5 at least at its tip, and a convex member 7 having an appropriate curvature outer shape integrated with the cutting member 6. This is a film edge correction tool.

The present invention will be explained in detail according to the drawings.
FIG. 1 is a perspective view of an embodiment of the present invention, in which the cutting member 6 is made of stainless steel or hard plastic, and has a rectangular plate shape as a whole, and has an elliptical column-like shape made of stainless steel or hard plastic at one end. It has a convex surface member 7, and has a thin plate-like flat cutting edge 5 at the tip of the other end. And an elliptical convex member 7
The curved surface portion having an appropriate curvature and the columnar end edge are pasted and pressed against the upper side of the upwardly facing edge 3 of the film 2, and the edge 3 is crushed by rubbing. On the other hand, the cutting member 6 integrally provided at the other end of the member 7 uses its flat cutting edge 5 to turn up the adhered portion of the downward edge 2 of the pasting film 2, and cuts the downward edge of the pasting film 2. The protruding portion of 4 is scraped off.

The cutting edge 5 of the cutting member 6 is provided flat in the longitudinal direction of the member body, and the blade angle θ of the cutting edge 5 with respect to the thickness direction can be set as appropriate, but it is preferable that θ=0° parallel to the thickness direction. This is also appropriate from the point of view of safety.

Further, the end surface of the columnar convex member 7 is not necessarily flat, and may protrude outward in a rounded manner. The size of the cutting member 6 is, for example, 1 mm in thickness and width.
A rectangular plate with a length of about 15 mm and a length of 50 mm is suitable. On the other hand, the size of the curved surface member 5 is an elliptical columnar shape in which the length in the base line direction of the ellipse is 25 mm, and the straight orthogonal line passing through the center of the base line has a curvature of about 15 mm, and the columnar length is 25 mm. Approximately 70mm is appropriate.

Regarding the production of the tool of the present invention, if the cutting member 6 and the convex member 7 are made of plastic, a normal plastic injection molding method can be used.
If it is made of other metal, it can be integrally molded by a metal casting method.

(Function of the invention) The present invention is a film edge correction tool that integrally includes a cutting member 6 having a flat cutting edge 5 on the tip side, and a convex member 7 having a curved surface suitable for rubbing while pressing against and sliding. The upward edge 3 of the pasted positive film 2 is moved by the member 7.
The curved surface of the member 7 is pressed against the member 7, and if necessary, the peripheral edge of the member 7 is pressed while sliding and rubbing, thereby pushing the upward edge 3 flatly against the film base 1 side. Since the cutting edge 5 is flat, the downward edge 4 at the slight step where the base film 1 and the laminated film 2 are overlapped is slightly turned up by the cutting edge 5, and a cut is made on the base film 1 side. The cutting edge 5 can be cut flatly by the acute angle portions provided on either or both of the tip corners on both sides in the thickness direction, and the upward edge 3 and downward edge 4 of the pasted positive film 2 can be removed with the same tool.

(Effects of the invention) The present invention eliminates cutting burrs such as upward edges or downward edges that occur at the edges of small pieces of pasted positive film that are laid out and pasted onto the base film of printing plate baking pasting film in the photolithography process. It is convenient for easily crushing or cutting depending on the form of occurrence. The present invention prevents printing blur and exposure unevenness that occur due to poor adhesion at the film edge when creating a printing plate by overlaying the laminated film on the photosensitive layer side of the printing plate material and baking it in close contact. It is effective as a tool for correcting film edges to prevent damage and has practical value.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the tool of the present invention, and FIG. 2 is a side sectional view of a pasting film used in a printing plate printing process, superimposed on a plate material. 1... Transparent base film, 2... Pasted positive film, 3... Upward edge, 4... Downward edge, 5... Cutting edge, 6... Cutting member, 7... Convex surface member.

Claims (1)

[Claims for Utility Model Registration] (1) A thin plate-like flat cutting edge 5 at least at the tip.
A film edge correction tool comprising: a cutting member 6 having a cutting member 6; and a convex member 7 having an appropriate curvature outer shape integrated with the cutting member 6. (2) The tool according to claim 1, wherein the cutting member 6 and the convex member 7 are made of metal such as stainless steel, aluminum, or other alloys. (3) The tool according to claim 1, wherein at least one of the cutting member 6 and the convex member 7 is made of hard plastic, and the other is made of stainless steel. (4) The tool according to claims 1 to 3, wherein the cutting member 6 has a rectangular plate shape. (5) The tool according to claims 1 to 3, wherein the convex member 7 is a circular or elliptical columnar body.