JPH1016177A - Production of screen printing plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a production method for a screen printing plate printing easily and rapidly without using a film. SOLUTION: At an emulsion coating stage 1, an UV sensitized emulsion is coated on both surfaces of a gauze of a screen printing plate. At a drying stage 2, the UV sensitized emulsion coating both surfaces of this gauze is effected an airdrying and cured to a washable degree. At a printing stage 3, a print is effected on one surface side of the UV sensitized emulsion by a printer. At an exposure stage 4, a violet radiation is emitted from a side which a drawing part of the screen printing plate is fixed. Then, the drawing part is not sensitized, only a part other than the drawing part is sensitized in the UV sensitized emulsion, the UV sensitized emulsion of the part is sensitized to be cured. Therefore, at the next washing stage 5, when a water under pressure is sprayed to the gauze, only the UV sensitized emulsion of a non-cured drawing part is blown, whereby a screen printing plate with a cured part remaining exception the drawing part is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for making a screen plate.

[0002]

2. Description of the Related Art Conventionally, a screen plate is prepared by applying a UV-sensitive emulsion to a screen gauze, drying the coated film, placing an image-positive film on the UV-sensitive emulsion, and exposing the image to a portion other than the positive portion of the UV-sensitive emulsion. To cure. Thereafter, the positive part which is not cured is washed off to complete the screen plate.

[0003]

However, in such a conventional method of making a screen plate, it is necessary to photograph an object to be printed to form an image positive film. For this reason, plate making takes time, and even when there is a partial change in the print target, a new image must be taken and an image positive film must be created. Prepress cannot be performed.

The present invention has been made in view of such conventional problems, and it is an object of the present invention to provide a method of making a screen plate that can easily and quickly make a plate without using a film. Things.

[0005]

According to the present invention, in order to solve the above-described problems, a photosensitive emulsion is applied to a screen stencil, an image composed of image data is created, and an image of the created image is created. An image is printed by a printer on the screen stencil based on the data, the screen stencil on which the image is printed is exposed, and the photosensitive emulsion in the portion other than the image portion is cured, and then the photosensitive emulsion in the uncured portion is removed. Configured to remove.

In such a configuration, when an image is printed on a screen stencil coated with a photosensitive emulsion and then exposed from the surface on the side of printing, the printed image portion is not exposed, and portions other than the image portion are not exposed. Only the light is exposed, and the UV-sensitive emulsion is hardened in this portion. Therefore, when the high-pressure water to which pressure was applied was next sprayed onto the screen printing gauze, only the UV-sensitive emulsion in the uncured image portion was blown away, and the cured UV-sensitive emulsion remained in portions other than the image portion. The screen version is completed.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the method of making a screen plate according to the present embodiment includes an emulsion coating step 1, a drying step 2, a printing step 3, an exposure step 4, a washing step 5,
And an image creation step 6. In the emulsion coating step 1, as shown in FIG. 2, a screen plate 9 comprising an aluminum frame 7 and a gauze 8 stretched in the aluminum frame 7 is provided.
A UV-sensitive emulsion is applied to both sides of the gauze 8. This UV-sensitive emulsion, as generally used, has the property of being hardened to a state in which it cannot be washed out even when high-pressure water is sprayed by being exposed to ultraviolet light, and hardened to an extent that it can be washed out by drying. Any type may be used. Next, in the drying step 2, the gauze 8
The UV-sensitive emulsion applied to both sides of the film is naturally dried and hardened to an extent that it can be washed off. As a result, FIG.
(A) As shown in FIG.
No. 10 is fixed in a washable state.

On the other hand, in an image forming step 6, an image to be printed is prepared by using the apparatus shown in FIG. That is, the personal computer 11 has a CPU 12, ROM 13, RA
The input port of the CPU 12 is connected to a keyboard 15 and a mouse 16, and the output port is connected to a printer 17 and a monitor 18. ROM13
Contains programs required for image creation.
The RAM 14 is provided with an area for storing image data for forming a created image.

The printer 17 is an ink jet printer, preferably a line printer having a high printing speed. The ink for ink jet used in the printer 17 may be aqueous, aqueous UV, UV, oily, or hot melt, and the colorant may be a dye or a pigment. The hue is preferably black with opacity,
Any color may be used as long as it is difficult to pass V (ultraviolet light). In the image creation step 6, an image to be printed is created while the keyboard 15 and the mouse 16 are operated to visually recognize the image projected on the monitor 18, and the image data for forming the created image is stored in the RAM 14. Keep it.

On the other hand, if the drying step 2 is completed, in the next printing step 3, the screen plate 9 shown in FIG.
Is set in the printer 17, the image data is read from the RAM 14, and printed on the UV emulsion 10 on one side. Thus, as shown in FIG. 3B, the surface of the UV-sensitive emulsion 10 on one side of the gauze 8 is attached to the printer 1.
The image portion 19 composed of the ink jet ink drawn by 7 is fixed.

After the printing step 3 is completed in this way, in the next exposure step 4, ultraviolet rays are irradiated from the side of the screen plate 9 where the image portion 19 is fixed. Then, as shown in FIG. 3C, in the UV-sensitive emulsion 10, the image portion 19 is not exposed, and only the portion other than the image portion 19 is exposed, and the UV-sensitive emulsion 10 is exposed and cured in this portion. Thus, a hardened portion 20 is formed. Therefore, when high-pressure water is sprayed on the gauze 8 in the next washing step 5, only the UV-sensitive emulsion 10 of the uncured image portion 19 is blown off, and the cured portion 20 other than the image portion is cured. The remaining screen plate 9 is completed.

When a screen plate for printing an image partially different from the image of the completed screen plate 9 is created, the image data stored in the RAM 14 is partially changed, and the changed image Performing the printing step 3 based on the data makes it possible to easily and quickly make a plate. In each of the steps 1 to 5, the steps other than the exposure step 4 are performed in a non-exposed state.

[0013]

As described above, according to the present invention, an image is printed on a screen stencil coated with a UV-sensitive emulsion,
By exposing the screen stencil on which this image was printed, the photosensitive emulsion in the portion other than the image portion was cured, and then the photosensitive emulsion in the uncured portion was removed, so that the film was easily and easily used without using a film. Plate making can be performed quickly, and plate making can be performed quickly in response to on-demand printing.

[Brief description of the drawings]

FIG. 1 is a process chart of an embodiment of the present invention.

FIG. 2 is a front view of a screen plate used in the embodiment.

FIG. 3 is a diagram showing a change of a screen plate corresponding to a process corresponding to the line aa of FIG. 2;

FIG. 4 is a block diagram illustrating an example of an apparatus used in an image creating process and a printing process.

[Explanation of symbols]

 1 Emulsion coating process 2 Drying process 3 Printing process 4 Exposure process 5 Washing process 6 Image creation process

Claims (1)

[Claims] An image comprising image data is created on a screen gauze while a photosensitive emulsion is applied to the screen gauze, and an image is printed by a printer on the screen gauze based on the image data of the created image. A method of making a screen printing plate, comprising exposing a printed screen printing gauze to cure a photosensitive emulsion in a portion other than an image portion, and thereafter removing the photosensitive emulsion in an uncured portion.