JPS6017334Y2 - Screen printing mask - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a screen printing mask in which a printing pattern is formed on a screen.

When printing on relatively thick and hard materials such as insulating substrates, glass plates, and plastic plates using the screen printing method, the printing mask may come into contact with the edges of the printing material due to damage to the printing pattern itself. Far more often than not, the mask becomes unusable due to damaged parts.

This is particularly noticeable when stainless steel is used as the screen material.

In other words, a particularly strong printing pressure is applied to the mask portion that comes into contact with the edge of the printing material, causing scratches on that portion and eventually causing damage as the mask is repeatedly used.

Conventionally, reinforcing material such as cellophane tape has been pasted onto the area as shown in Figure 1, but due to the thickness of this reinforcing material, the printing material and mask do not come into close contact. , the desired printing cannot be performed because the printing pressure is not applied.

The purpose of this invention is to prevent damage to the part that contacts the edge of the printing material and extend the useful life of the mask, taking into account the above points. An object of the present invention is to provide an improved screen printing mask provided with a reinforcing film made of epoxy resin or the like.

This invention will be described below with reference to illustrated embodiments.

FIGS. 2 and 3 show two embodiments of a printing mask according to this invention, and the same elements in FIGS. 2 and 3 are designated by the same numbers.

In the embodiment of FIG. 2, 1 is a screen mesh, 2
is provided on the lower side of the screen mesh 1, and is a pattern forming layer that forms the printed pattern 3, and 4 is provided in a portion that comes into contact with the edge of the printing material 5 and receives a relatively strong force during printing. The reinforcing film 4 is formed, for example, by gluing metal foil or applying epoxy resin or the like so as to be located on the same surface as the pattern forming layer 2 as shown.

In the embodiment shown in FIG. 3, a reinforcing film 4 is formed on a portion of the pattern forming layer 2 that contacts the edge of the printing material 5 so as to be flush with the pattern forming layer 2 as shown.

As explained above, in this invention, by providing a reinforcing film on the part of the mask that contacts the edge of the printing material, the printing mask of this invention has a longer effective lifespan than conventional ones. It is twice as long, and there is no need to pre-treat the edges of the printing material, improving productivity.

In addition, in this device, the reinforcing film is configured to be located in the same plane as the surface on which the printing pattern is formed, so the resin film in the part that comes into contact with the peripheral edge of the printing material is made thicker than the pattern forming resin film. This method does not have the drawbacks of conventional methods such as the printing material and the mask not being in close contact with each other and no printing pressure is applied, and it is possible to print accurately even when the printing pattern is relatively narrow.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a conventional mask structure, FIG. 2 is a sectional view showing essential parts of an embodiment of a screen printing mask according to this invention, and FIG. 3 is a sectional view showing another embodiment. It is a sectional view similar to. In the figure, 1 is a screen mesh, 2 is a pattern forming layer,
3 is a printing pattern, 4 is a reinforcing film, and 5 is a printing substrate.

Claims (1)

[Scope of utility model registration request] In a screen printing mask with a printed pattern formed on the screen, a reinforcing film made of metal or epoxy resin is placed on the same plane as the layer forming the printed pattern on the part of the mask that comes into contact with the edge of the printed material. A screen printing mask characterized by being provided in such a manner that the screen printing mask is positioned in the same position.