JPH05278317A - Uneven printing method - Google Patents

Abstract

PURPOSE:To eliminate operation inferiority by absorbing the touch with a finger by space by a method wherein a resin solution is dropped on the inside area of an endless weir to be built up by the surface tension of the resin solution so as to become higher than the weir and subsequently cured. CONSTITUTION:After the flat printing of a character, a figure or a local hue is applied to a synthetic resin sheet 2, an endless circular or rectangular weir 3 is formed on the sheet by screen printing. Next, an ultraviolet curable resin solution or a thermosetting resin solution 4 is dropped on the inside area of the weir 3 from a nozzle and built up by utilizing the surface tension of the resin solution so as to become higher than the weir 3 and subsequently irradiated with ultraviolet rays to be cured. Further, the weir 3 can be also formed by the plastic deformation of the sheet 2. The expansion of the sheet is formed by the filling with a resin to show a solid state and the touch with a finger can be faithfully transmitted to the rear of the sheet 2. Therefore, the touch with a finger is absorbed by space to generate no operation inferiority.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for printing with unevenness.

[0002]

2. Description of the Related Art As shown in FIG. 5, a character display surface such as a numeral or symbol display surface (10) of an electronic desk calculator (1) and an operation panel of a copying machine is raised to a circle or a rectangle including a character portion. hand,
It is made easy to fit the fingers.

As shown in FIG. 6, in order to raise the character portion, in the gravure printing, a depression is made on the surface of the plate cylinder (5) made of brass.
(51) is formed, and the ink (40) accumulated in the recess is formed into a sheet (2).
Or a method of expanding the sheet (2) to the extreme by a method such as pressing or hot stamping as shown in FIG.

In the case of FIG. 6, it takes a lot of time and labor to process the recess (51) in the plate cylinder (5), resulting in a high cost.

In the case of FIG. 7, the back side of the bulge (20) is a space.
(20), the bulge (2
When the touch to (0) was weak, the deformation of the sheet (2) was sometimes absorbed in the space (20) and switching was not performed in some cases. The present invention clarifies a printing method with unevenness that can solve the above problems.

[0006]

According to the printing method of the present invention, an endless weir (3) is formed by screen printing or by plastically deforming the sheet (2) in accordance with the contour of the part to be inflated. The resin liquid (4) is dropped inside the weir (3), and the resin liquid (4) is raised higher than the weir (3) by the surface tension of the resin liquid (4),
The resin liquid (4) is cured.

[0007]

[Operation and effect] When the weir (3) is formed by screen printing, the plate formation on the screen is much easier than forming a recess on the plate cylinder for gravure printing.
The cost can be reduced significantly.

When the weir (3) is formed by plastically deforming the sheet (2), simple methods such as press working, hot pressing, and embossing with a Thomson machine can be carried out, and the gravure printing plate cylinder is also dented. The cost can be reduced as compared with forming.

The bulge on the sheet (2) is solid because it is filled with resin, and the touch of a finger can be faithfully transmitted to the back surface of the sheet (2). Unlike the case where the back side of the general bulge portion (20) is the space (21), a touch of a finger is not absorbed in the space and a malfunction does not occur.

[0010]

EXAMPLE A color is printed on a synthetic resin sheet (2) on a character, a symbol, a figure or locally on a plane. As shown in FIG. 1, an endless weir (3) having a circular shape, a rectangular shape, an elliptical shape or the like is formed by screen printing so as to surround the plane printing portion.

As shown in FIG. 2, the ultraviolet curable transparent resin liquid (4) or the thermosetting transparent resin liquid (4) is dropped from the nozzle inside the weir (3) and the surface tension of the resin is used to make the weir. Raise the resin liquid (4) higher than (3).

Resin solution (4) by irradiation with ultraviolet rays or heating
Cure.

When the weir (3) is formed by screen printing,
Forming a plate on a screen is much easier than forming a recess in a gravure plate cylinder, and the cost can be significantly reduced.

When the weir (3) is formed by plastically deforming the sheet (2), a simple method such as press working, hot pressing, punching with a Thomson machine, etc. can be carried out, and the plate cylinder for gravure printing also has a recess. The cost can be reduced as compared with forming.

The bulging portion of the sheet (2) is solid because it is filled with resin, and the touch of a finger can be faithfully transmitted to the back surface of the sheet (2), which is the extreme part of the conventional sheet (2). Unlike the case where the back side of the bulge portion is a space, a touch of a finger is not absorbed in the space and a malfunction does not occur.

Characters, symbols, figures printed on the sheet (2),
Colors can be seen through the transparent resin layer. FIG. 3 shows another embodiment of the weir (3) formed by screen printing, in which printing is performed using a thick screen and a flexible squeegee (neither is shown).

A portion of the screen, such as a circular, rectangular, or elliptical portion, along the inner edge of the plate portion is thickly adhered to the sheet (2) corresponding to the thickness of the screen, and the central portion of the screen is deflected by the squeegee. Since the ink is strongly scraped off, a thin ink adheres to the sheet (2). Thus, the weir (3) can be formed on the outer peripheral portion by making the outer peripheral portion thicker than the central portion of the ink.

FIG. 4 shows another embodiment in which the resin sheet (2) is plastically deformed to form the weir (3). At the time of plastic deformation, press working with a male and female die, hot stamping or The embossing process with a Thomson machine can be adopted.

The present invention is not limited to the configuration of the above embodiment, and various modifications can be made within the scope of the claims.

[Brief description of drawings]

FIG. 1 is a cross-sectional view in which a weir is formed on a sheet.

FIG. 2 is a sectional view of a sheet bulge portion.

FIG. 3 is a sectional view of another embodiment.

FIG. 4 is a sectional view of another embodiment.

FIG. 5 is a perspective view of an electronic desk calculator.

FIG. 6 is an explanatory diagram of a conventional method by gravure printing.

FIG. 7 is a cross-sectional view of a conventional example in which a sheet is deformed and inflated.

[Explanation of symbols]

 (2) Sheet (3) Weir (4) Resin liquid

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification number Office reference number FI technical display location G09F 9/00 364 D 6447-5G

Claims (2)

[Claims] 1. An endless weir (3) is formed on the sheet (2) by screen printing so as to correspond to the contour of a portion to be inflated on the sheet (2), and then a resin is formed inside the weir (3). A concave-convex printing method in which the liquid (4) is dropped to raise the resin liquid (4) higher than the weir (3) by the surface tension of the resin liquid (4), and the resin liquid (4) is cured. 2. The weir (3) is formed by plastically deforming the sheet (2) corresponding to the contour of the inflated portion on the sheet (2), and then the resin liquid (3) is formed inside the weir (3). 4) is added dropwise to the resin liquid
A concavo-convex printing method in which the resin liquid (4) is raised above the weir (3) by the surface tension of (4) and the resin liquid (4) is cured.