JPS63286390A - Printing method - Google Patents

Abstract

PURPOSE:To wind a printed material so as to have the same diameter at the center part and both the sides to prevent the occurrence of slacks, by printing a pattern over the full width of the long-form printing material excepting parts around register marks. CONSTITUTION:In a printing method for a long printing material, a grain-form pattern 11 is printed on approximately the center of the printing material, and the both sides are made as margin parts. On the margin parts, register marks 3 and the other marks, such as process marks 4, are printed. Additionally, on a part requiring a stereoscopisc view, a raised printing is applied with a thickness from several tens of microns to several hundreds of microns. The pattern 1 is applied over the full width of the material other than margin parts 5 around the register marks 3. At this time, the material in use is a long-form sheet, such as a paper and a plastic sheet. In this manner, since especially the long-form printed material with a raised printing is taken up during printing so as to have the same diameter at the center part and at the edge parts thereof, a slack is eliminated, and a trouble is prevented in succeeding processes.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a printing method for a long printing material, and particularly to a printing method suitable for embossed printing.

(Conventional technology) When printing decorative paper with a wood grain pattern or abstract pattern, in order to emphasize the three-dimensional effect of the printed pattern and improve the design, it is necessary to increase the thickness from several tens of microns to several hundred microns. Printing may be applied. In this case, if the material to be printed is long, printing is performed using a rotary press as shown in FIG. 3(a). In other words, the pattern (1) is printed almost on the middle of the printing material, and on both sides are margins called edges (2).
Only registration marks (3) for each color and other marks, such as various marks for plate making (4), are printed here.

In other words, there is almost no blank space in the ear part (2).

(Problem to be solved by the invention) By the way, since the pattern (1) is a thick raised print, when it is rolled up, the pattern (1) is printed as shown in Fig. 3(b).
) portion has an extremely large diameter due to the thickness of both the printing material and the ink, and the ears (2) on both sides have a small diameter due to the thickness of the printing material only. For this reason, there is a problem in that the selvage portion (2) becomes sticky, which causes trouble in the subsequent process.

(Means for Solving the Problem) In order to solve this problem, the present invention is characterized in that the pattern (1) is printed over the entire width of the long printing material except for the area around the registration mark. Provide a printing method.

(Function) Since the registration mark normally has only a very small area, according to the method of the present invention, the pattern is printed uniformly over substantially the entire width. Therefore, even when the printing material is rolled up, the diameters of the center portion and both sides are equal, and no dubbing occurs.

(Explanation of Examples) Hereinafter, the present invention will be described in detail with reference to the drawings.

1A and 1B of the drawings are plan views of the printing material for explaining the printing process, and FIG. 2 is a perspective view of the material in a rolled up state.

In FIG. 1(a), the wood-grain pattern αυ is printed approximately on the middle of the printing material, and both sides are blank spaces. A registration mark (3) and other marks, such as a plate-making mark (4), are printed in this margin.

This is the same process as the conventional process, and the printing is thin, ranging from several microns to about 20 microns in thickness.

Figure 1(b) shows the parts that require a three-dimensional effect.
This is a raised print with a thickness of several tens of microns to several hundred microns. (2) is the registration mark, (5) is the margin around this registration mark, and this margin (
Except for 5), the pattern (1) is applied to the entire width.

The printing material used in the present invention is a long sheet such as paper or plastic sheet.

Further, as described above, the present invention does not need to be applied to the gold color to be printed, and may be applied only when printing an ink that is thick (related to the thickness of the printing material after printing).

For example, 6000 to 8 with a B type viscometer (/1640-ter)
When performing gravure printing using paste ink of approximately 000 cps to a thickness of approximately 100 to 500 μm after drying,
Alternatively, this may be the case when printing in a raised manner, such as when foaming is performed after printing using foamable ink.

(Effects) As described above, according to the present invention, during printing, especially when a long printing material is heaped up and rolled up, the diameters of the center portion and the edge portion are made equal, and there is no doubleness. have an effect.

eye

[Brief explanation of drawings]

Figures 1 (a) and (b) of the drawings are plan views of the printing material to explain the printing process, Figure 2 is a perspective view of the material in a rolled up state, and Figure 3 (a) shows the conventional printing process. A plan view of the printing material for explanation, and FIG. 3(b) is a perspective view of the material in a rolled up state.

Claims (1)

[Claims] 1) A printing method characterized by printing a pattern over the entire width of a long printing material, excluding the area around the registration mark.