JPH0432846A - Letterpress for transfer and production thereof - Google Patents

Abstract

PURPOSE:To allow the easy transfer of fine images by forming a photosensitive resin layer on an original film and exposing the resin layer via the original film with collimated beams of light for a specified period of time, thereby forming the letterpress. CONSTITUTION:The photosensitive resin layer 6 is formed via a nonadhesive protective film 3 on the original film 2 and a base substrate 1 coated with the film of a tacky adhesive agent 4 is brought into pressurized contact with the surface of the resin layer 6 in such a manner that the tacky adhesive agent 4 faces the resin layer side 6 and the resin layer 6 is exposed for a specified period of time with the collimated beams of light via the original film to form hard parts 6b exposed in correspondence to the images of the original film 2 on the resin layer 6. The nonadhesive protective film 3 is then peeled and the resin layer exclusive of the hard parts 6b is removed by washing with water, by which the letterpress corresponding to the images of the original film 2 is formed on the base substrate 1. The fine images are formed as the letterpress with high accuracy in this way and the easy transfer of the fine images to a material to be transferred is executed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a letterpress printing plate for forming and transferring very precise shapes and images such as characters onto a letterpress plate, and a method for manufacturing the same.
A resist mask for direct blast engraving is formed on the surface of a hard material such as stone, ceramics, concrete, glass, or metal, and a dye is applied to a letterpress and then pressed onto the material to be transferred. It can be used as a relief plate for transfer.

[Conventional technology] Blasting is a process in which particles made of river sand, silica sand, etc. are ejected using compressed air and sprayed onto the workpiece. Conventionally, it was only used for surface finishing such as sand removal and deburring of castings. However, it has also come to be used for engraving characters on tombstones, etc.

[Problem to be solved by the invention]

However, until now, there has been no technology to use this blasting method to carve minute shapes or letters on the surface of the workpiece, or to carve deep holes like pots for artistic carving.

Conventional masks are simply made by cutting out a rubber plate with a cut knife, and not only is it difficult to make a mask with precise details, but the mask adheres to the cut surface. This is because the mask easily peels off or curls up due to the spray pressure, and to prevent this, it is difficult to peel off the mask if it is tightly attached to the carved surface using an adhesive.

However, in view of such conventional circumstances, the present inventors exposed parallel light to a photosensitive resin through an original film by photographic development, exposed the exposed area, and washed the exposed area with water to create a detailed image. This mask is ideal for blast engraving, as it can be used to express expressions, adhere well to the surface to be engraved without using other adhesives, withstand blasting pressure, and can be easily peeled off after engraving. was completed.

By the way, this mask needs to be created each time the material to be cut is different, but it would be economical to form a letterpress as a mask and use it as many times as you like. , it also saves the effort of creating a mask.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a relief printing plate for transfer, which can form a resist mask for blast engraving as many times as required, and a method for manufacturing the same. With the goal.

Furthermore, the present invention was made in view of the fact that conventional printing plates were unable to transfer precise images such as photographic images.
It is an object of the present invention to provide a relief plate for transfer and a method for manufacturing the same, in which even fine images can be formed on the relief plate with high precision and the fine image can be easily transferred to a transfer material.

[Means for Solving the Problems] The above problems are solved by forming a photosensitive resin layer on a document film via a non-adhesive protective film, and
By pressing a support substrate coated with an adhesive on the resin layer so that the adhesive faces the resin layer side, and exposing the resin layer to parallel light for a certain period of time through the original film. A photosensitive hard part corresponding to the image of the original film is formed on the resin layer, and then the non-adhesive protective film is peeled off and the resin layer other than the hard part is removed by washing with water to form the support substrate. This problem can be solved by a method for producing a relief plate for transfer that forms a letterpress corresponding to the image on the original film, and a letterpress transfer plate obtained by the method.

[Function] According to the above invention, when the photosensitive resin layer is exposed to light through the original film, the portions of the resin layer exposed to light according to the image on the original film are hardened. The resin layers are bonded to each other by being pressure-bonded to the support substrate with an adhesive, so when the exposed resin layer is washed with water, the resin other than the hardened portions is removed, and the original film remains on the support substrate. A letterpress that is faithful to the image is formed.

In order to form a mask for blast cutting using the relief plate of the present invention, a photosensitive resin containing a non-photosensitive adhesive is applied to the plate surface of the relief plate. If the same material as the photosensitive resin used to form the relief plate is used as the photosensitive resin, the photosensitive resin will adhere well to the plate surface. When this printing plate is pressed onto the surface to be carved, a photosensitive resin with a shape corresponding to the image on the original film adheres to the surface to be carved, and by exposing it to light and hardening it, it is directly applied to the surface to be carved. It is possible to form a resist mask corresponding to the image on the original film.

In this case, the photosensitive resin film transferred to the surface to be carved contains a non-photosensitive adhesive, and the non-photosensitive adhesive does not harden within the photosensitive resin film that has been cured by exposure to light. Because it has a suitable adhesiveness and gives the photosensitive resin film a suitable degree of flexibility, it allows the transferred photosensitive resin film to adhere well to the surface to be carved, and furthermore, it can be easily peeled off from the surface to be carved after use. Demonstrate characteristics.

Furthermore, it is also possible to apply a dye to the plate surface of the relief plate of the present invention and press and transfer it to cloth, paper, or other transfer material, thereby making it possible to easily transfer a precise image.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic cross-sectional view showing an embodiment of the method for producing a relief plate for transfer according to the present invention, and an example in which the relief plate obtained thereby is used to form a mask for blast cutting.

First, the original film 2 is placed on the exposure glass 1 in an exposure device (not shown) (see figure a). This film has a predetermined shape to be carved as a light-shielding part 2a, and a non-cutting part as a transparent part 2b.
The image has been photographically developed.

A polypropylene film (or a polyester film may also be used) with a thickness of about 0.2 mm is placed on this original film 2.
A non-adhesive film 3 is placed (Figure b).

3 to 5 m on the non-adhesive film 3 or its outer periphery.
A bank 5 is formed using an adhesive tape with a thickness of about m (Fig. C), and a fluid photosensitive nylon resin is flowed into the upper part 5 to form a photosensitive resin layer 6 (Fig. D). At this time, the original film 2 is attached to the photosensitive resin layer 6 by the non-adhesive film 3.
protected from

Next, a support substrate 7 is placed on the resin layer 6, and an adhesive 4 is applied to one side of the support substrate 7.
By pressing from above the support substrate 7 with the side facing the photosensitive resin layer 6 side, the photosensitive resin 6 is flattened to a constant thickness and adhered to the photosensitive resin layer 6 (Figure e).

Note that if the support substrate 7 is constructed using a board made of a transparent resin, a board painted black, or a board coated with an antihalation agent, halation will be avoided during the following exposure. (Highly accurate exposure can be performed.)

Next, the area around the exposure device is placed in a dark room, and the light from the light source 9 such as a halogen lamp or mercury lamp is corrected to parallel light from below the exposure glass 1 via the parallel light correction means 10 and exposed, and the original film 2 is exposed. The photosensitive resin 6 is exposed to the parallel and rectilinear light for about 20 to 30 seconds through the parallel light beam (Figure f).

With this exposure method, the light does not fall on the photosensitive resin layer 6 in an oblique manner, and as a result, the image on the original film 2 is faithfully exposed to light, and as a result, the resin corresponding to the transparent portion 2a of the original film 2 is exposed. Only the exposed portion 6b of the layer 6 is exposed to light, and that portion is hardened.

Next, from the exposure device, the integral object 3.5.6 on the original film 2 is
．． Take out the whole 7 and peel off the non-adhesive film 3 (Figure g). Since the film 3 is non-adhesive, it can be easily peeled off from the resin layer 6. Once the entire resin layer 6 has been exposed in this way, if it is washed with water, hot water, or a solvent containing 3% caustic soda, the non-exposed area 6a will not be hardened and will remain the original fluid resin. It is easily removed because it maintains its quality (Figure h). Note that the grip part 8 as shown in Figure i
If the holding plate 8 marked with a is fixed on the support substrate 7, it will be convenient for use.

In order to use the above-mentioned relief plate for transfer, a fluid photosensitive resin, preferably a photosensitive resin 11 made of the same material as that used for forming the resin layer 6, is used, and a non-photosensitive resin is used. For example, an appropriate amount of polyvinyl acetate emulsion is mixed as an adhesive and applied to the plate surface of the letterpress (Fig. i), the plate surface is pressed onto the cut surface 12a of the material 12 to be cut, and the photosensitive resin 11 is applied to the cut surface. Transition. Since the printing plate of the letterpress has a shape corresponding to the image of the original film by the above-described production method, the image of the original film is transferred to the cut surface 12a as a photosensitive resin film 11 (see figure k). When the photosensitive resin film 11 transferred to the surface to be carved 12a is exposed to light, the transferred image becomes hard and adheres to the surface to be carved 12a. However, this exposure does not need to be parallel light as described above, and the surface to be carved may be directly irradiated using a light source 9 such as a halogen lamp.

Note that the polyvinyl acetate emulsion mixed into the photosensitive resin film 11 as a non-photosensitive adhesive is present in the photosensitive resin film 11 that has been hardened by exposure, and maintains its adhesiveness without becoming hardened and is photosensitive. In order to give appropriate flexibility to the resin film 11, when it is transferred to the surface to be carved 12a, the surface to be carved 12a
The photosensitive resin film 11 is easily peeled off after use.

Furthermore, since the photosensitive resin film 11 has flexibility, it can be transferred and adhered not only to a flat surface to be carved but also to a curved or uneven surface.

After forming the mask 13 on the surface to be carved 12a as described above, a blasting machine (not shown) configured to spray high-pressure particles is used to spray ceramic particles 14a and the like onto the surface to be carved 12a from its nozzle 14. The exposed parts are blasted into a predetermined shape (Figure m). According to this blast cutting, regardless of the material of the workpiece 12, by adjusting the injection angle and injection pressure of the nozzle 14, two types of cutting cross-sectional shapes 15a (boring) and 15b shown in Fig. In addition to (deep vertical hole cutting), it is possible to form holes with arbitrary depths and shapes.

Furthermore, a desired image can be transferred to cloth, paper, metal, or the like by using various dyes in the relief plate of the present invention. In this case, since the material to be transferred is not carved, an image in the desired color is created by coating various dyes on the printing plate and pressing it directly onto paper bags, cardboard boxes, clothing layers, shirts, etc. It is recommended that the image be transferred and subjected to pre-treatment or post-treatment depending on the various dyes.

[Effects of the Invention] As explained above, according to the present invention, it is possible to create a relief plate for transfer that is faithful to the original image by using a photographic image on the original film.

When this letterpress is used to form a mask for blast engraving, if the photosensitive resin film transferred to the surface to be etched contains an appropriate amount of non-photosensitive adhesive, the plate surface will have appropriate flexibility. Because of this, even if the surface to be carved is a curved or uneven surface, the photosensitive resin film adheres well to the surface to be carved and can withstand blasting pressure well, and is easy to peel off after use, making it suitable for blast cutting. It can exhibit optimal characteristics as a mask for.

In addition, since the relief plate for transfer according to the present invention can be handled as a single item, it can be stored and transported freely. Therefore, it is possible to eliminate the troublesome labor of mask production and to perform precise blast cutting using simple means at a very low cost.

Furthermore, various dyes can be applied to the plate surface of the relief plate of the present invention, and the dyes can be pressed and transferred onto a large number of transfer materials, regardless of the material, such as cloth or paper, allowing for versatile use. It becomes possible.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view showing an embodiment of the method for producing a relief plate for transfer according to the present invention, and an example in which the relief plate obtained thereby is used to form a mask for blast cutting. 1... Exposure glass, 2... Original film, 3...
Non-adhesive film, 4... Adhesive, 5... Bank, 6
... Photosensitive resin, 6a... Non-exposed area, 6b... Exposed area, 7... Support substrate, 9... Light source for exposure, 10.
... Parallel light correction means, 11... Coating material, I2... Driven material Patent applicant: Kuni Nori Sawa Nobuzu

Claims (4)

[Claims] (1) A photosensitive resin layer is formed on the original film via a non-adhesive protective film, and a support substrate coated with an adhesive is placed on the resin layer so that the adhesive is on the side of the resin layer. The resin layer is pressed so as to face each other and exposed to parallel light for a certain period of time through the original film, thereby forming a hard part exposed to light corresponding to the image on the original film on the resin layer, and then A method for manufacturing a relief plate for transfer, comprising peeling off an adhesive protective film and removing the resin layer other than the hard portion by washing with water to form a letterpress corresponding to the image of the original film on the support substrate. (2) A photosensitive resin layer is formed on the original film via a non-adhesive film, and a support substrate coated with an adhesive is placed on the resin layer so that the adhesive faces the resin layer side. The resin layer is exposed to parallel light for a certain period of time through the original film to form a hard part exposed to light corresponding to the image on the original film in the resin layer, and then the protective film is A letterpress printing plate for transfer, in which a letterpress corresponding to the image of the document film is formed on the supporting substrate by peeling off the film and washing and removing the resin layer other than the hard portion. (3) Applying a photosensitive resin containing a non-photosensitive adhesive to the plate surface of the transfer letterpress, press-transferring this onto the surface to be carved, and exposing it to a resist for blast carving on the surface to be carved. 3. The letterpress printing plate for transfer according to claim 2, which can be used to form a mask for printing. (4) The relief plate for transfer according to claim 2, wherein various dyes are applied to the plate surface of the relief plate for transfer, and the dyes can be transferred by pressing onto a material to be transferred.