JPS6318019Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention is used in printing-related work such as creating draft manuscripts and plate making, for example, as a background for heading characters.
This invention relates to a photosensitive pattern sheet used to enable so-called embedding printing of various patterns.

For example, in offset printing or gravure printing, when the background halftone pattern is hidden behind a certain heading character, conventionally, a disposable plain mesh film (mesh plate) is cut into an appropriate size. After cutting, multiple pieces are stacked one on top of the other to avoid moiré and pasted together using pieces of adhesive tape. However, with this, the pattern is limited to halftone dots (screen), which imposes restrictions on its use, and the smaller the cut, the more difficult it is to attach the tape with the tape pieces. becomes difficult, and moiré phenomena are more likely to occur. On the other hand, there are transfer sheets (instant lettering) on which patterns such as sand grains and brickwork are printed in addition to halftone dots, and are mainly used for artwork by designers and illustrators. There are problems in that it is necessary to attach the original, easily damaging the original, and making it difficult to reposition the original.

The purpose of the present invention is to solve these problems, and its specific structure will be explained based on the illustrated embodiment. In FIG. The surface of the transparent film is coated with a photosensitive agent 2 such as a diazo compound. Reference numeral 3 denotes a release sheet that serves as a so-called adhesive mount for the transparent film 1, and is made of a highly smooth plastic film or paper, and is attached to the back side of the transparent film 1 via a transparent adhesive 4 to form a so-called laminating sheet. is glued to. However, it goes without saying that the release sheet 2 can be peeled off for use by using a release agent 5 such as a silicone agent applied to the surface thereof.

In this case, it is preferable to use a transparent plastic film as the release sheet 3, so that in combination with the transparent adhesive 4, the photosensitive pattern sheet according to the present invention can be used inside out. The reason why the release sheet 3 needs to have high smoothness is that it prevents diffuse reflection of light during exposure, and
The goal is to increase transparency. P is transparent film 1
It is a pattern (pattern) that is optically printed over the entire surface of the screen. Figure 1 shows a checkered pattern, but as shown in Figures 2 to 5, honeycombs, scales, brickwork, seams, and other desired patterns can be used. Various pattern forms can be adopted.

It is preferable that such various patterns P be applied before the transparent film 1 and the release sheet 3 are bonded together. In other words, when the transparent film 1 is in an extremely thin state before being bonded as shown in FIG.
If the pattern P is optically printed on the surface, the adhesive 4 and release agent 5 will have no adverse effect on the photosensitive material 2 due to heat drying, compared to the method of printing after adhering to the release sheet 3. This is because the photosensitive agent 2 can be formed into a uniform coating film and a highly accurate pattern P can be provided without being affected. Then, the release sheet 3, the surface of which has been previously coated with adhesive 4 and release agent 5, is then polymerized and integrated with the transparent film 1. However, for applications that do not require particularly high precision, it is acceptable to bond and integrate the transparent film 1 and the release sheet 3 and then finally print various patterns P onto the surface of the film 1.

As described above, in the photosensitive pattern sheet for plate making or the like according to the present invention, grains, lattices, honeycombs, brickwork, or other desired patterns P are exposed on the back side of the plastic transparent film 1 over the entire surface. Because it has a structure in which a highly smooth release sheet 3 made of paper or plastic film is adhesively integrated with a transparent adhesive 4 in a removable manner,
When using this by cutting it freely and pasting it, you can just peel off the release sheet 3 and paste it as is, and there is no need for a separate piece of adhesive tape. As the process progresses, its workability will further improve.

In other words, when attaching a mesh screen to a fixed angle in order to prevent moire phenomenon, for example, the angle can be easily and accurately adjusted while holding the transparent film 1 with the adhesive 4 self-retaining. As soon as the adjustment is decided, it can be cut and pasted as it is, which is extremely easy to work with. In addition, compared to the conventional example mentioned at the beginning, which is pasted with pieces of adhesive tape, since the adhesive 4 is applied in advance, there is no need to pay for pasting the tape pieces. There is no need to cut it into the eye, and it is possible to save on materials. Even if it is cut into small pieces, since the release sheet 3 is on the backing, the transparent film 1 can be accurately pasted by peeling it off while gripping it without any trouble.

Furthermore, if the release sheet 3 is also made of transparent plastic film, combined with the transparency of the adhesive 4, it can be pasted smoothly and correctly while being visible from above, and it can also be used by turning it upside down. It is also possible to do so, which can be said to be even more profitable.

[Brief explanation of the drawing]

Fig. 1 is a partially broken perspective view of the photosensitive pattern sheet according to the present invention, Figs. 2 to 5 are plan views illustrating various types of patterns, and Fig. 6 is a partial cross section showing the adhesion process. It is a diagram. 1... Transparent film, 2... Photosensitive agent, 3... Release sheet, 4... Adhesive, 5... Release agent, P...
pattern.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Comprising paper or plastic film on the back side of a plastic transparent film whose entire surface is exposed to light with grains, lattices, honeycombs, brickwork, scales, tiling, or any other desired pattern. A photosensitive pattern sheet used for plate making, etc., characterized by a highly smooth release sheet that is removably bonded with a transparent adhesive. 2. A photosensitive pattern sheet for use in plate making, etc. as set forth in Claims 1 of the Claims for Utility Model Registration, characterized in that the release sheet is a plastic transparent film.