JPH01156622A - Method and device for printing name plate - Google Patents

Abstract

PURPOSE:To simplify a printing process, and also, to exactly execute printing by dividing the printing process of a curved surface into a screen printing process of its center part and a screen printing process of its peripheral part. CONSTITUTION:The title device is provided with a process for bringing the center part 10 of a curved surface 1 to screen printing, and a process for bringing the peripheral part 11 of the curved surface 1 to screen printing. The center part 10 has a roughly semicircular area, and the peripheral part 11 has a roughly U-shaped band-like area. The process for bringing the center part 10 to screen printing is executed by a first screen printing means 20, and the process for bringing the peripheral part 11 to screen printing is executed by a second screen printing means 21. In such a way, by executing the screen printing by dividing the center part 10 and the peripheral part 11 of the projecting curved surface 1, the printing process is simplified, and also, conforming to the curved surface of the screen is executed enough, therefore, printing can be executed exactly.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a dial printing method and device, and more specifically, to accurately screen print on a convexly curved surface. The present invention relates to a dial printing method and device that can print dials.

(Prior art) In recent years, a convexly curved surface 1 as shown in Fig. 5 has been used for dial plates used in speedometers of automobiles, etc., with the aim of improving the design effect and visibility. A substrate 2 having a numeral display section 3a and a scale display section 3b provided on the surface.
A printing layer 4 having a printing layer 4 is seen.

Conventionally, the printing layer 4 of such a dial plate is as shown in FIG.
It was provided by screen printing.

More specifically, a screen 5 is placed on the curved surface 1, and the screen 5 is pressurized with a squeegee 6 to make it follow the curved surface 1, and the ink 7 placed on the screen 5 is evenly distributed on the screen 5. Rub, ink 7
The printed layer 4 was formed by coating the curved surface 1 through the mesh of the screen 5.

(Problems to be Solved by the Invention) However, in the prior art as described above, the screen does not fit well into the curved surface, so the numbers and scales are not clearly displayed.In other words, the lines around the numbers and scales are not clearly displayed. There were drawbacks such as smudging or sagging, resulting in poor separation of numbers and scales, deformation, and color unevenness. Another drawback is that the screen may shift on a curved surface, resulting in inaccurate printing.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the problems of the prior art as described above, in the present invention, the central part and the peripheral part of the convex curved surface are screen printed separately. This is how it was done.

(Function) Screen printing at the center of a curved surface is performed by printing a roughly semicircular area using the squeegee in approximately one direction, and screen printing at the periphery of the curved surface is performed by printing a roughly U-shaped strip area by moving the squeegee in one direction. Printed in action.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 1 to 4. In these drawings, the same parts as in FIGS. 5 and 6 are given the same reference numerals.

As shown in FIG.
1 by screen printing. Central part 1
0 has a substantially semicircular region, and the peripheral portion 11 has a substantially U-shaped strip region.

The process of screen printing the central part 10 is performed by a first screen printing means 20, and the process of screen printing the peripheral part 11 is performed by a second screen printing means 21 (see FIG. 4).

The first screen printing means 20 is the central part 1 of the curved surface 1.
0 and a first support frame 23 that supports the first screen 22. The second printing means 21 has a second screen 24 arranged on the peripheral part 11 of the curved surface 1 . This second screen 24 has an inner peripheral end supported by a first support frame 23 and an outer peripheral end supported by a second support frame 25. The first and second screens are connected to the squeegee 2 in a normal manner.
6 onto the curved surface 1, and predetermined printing is performed on the curved surface 1 using ink (not shown).

In the illustrated embodiment, when printing the central part 10, the squeegee 26 is moved in approximately one direction as shown by the arrow 27 in FIG. The scale display portion 3b of the meter is formed by a substantially U-shaped unidirectional movement indicated by the arrow 28.

[Effects of the Invention] According to the present invention, since the screen printing process for the curved surface of the screen is divided into the screen printing process for the central part and the screen printing process for the peripheral part, the printing process is simplified, and the curved surface of the screen is There is a practical benefit in that accurate printing can be expected because of sufficient familiarization.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a substrate for carrying out the dial printing method and apparatus according to the present invention, FIG. 2 is a plan view of the substrate showing the case of printing the central part of a curved surface of the present invention, and FIG. FIG. 4 is a sectional view showing the printing device of the present invention; FIG. 5 is a perspective view of a conventional printed dial; FIG. FIG. 6 is an explanatory diagram of a conventional printing method in which screen printing is performed on a substrate. DESCRIPTION OF SYMBOLS 1... Curved surface 2... Substrate 3a... Number display part 3b... Scale display part 10... Central part 11... Peripheral part 20... First screen printing means 21 ...Second screen printing method agent Yasuo Miyoshi, patent attorney

Claims (2)

[Claims] (1) In a dial printing method for providing screen printing on the surface of a substrate having a convexly curved surface,
A dial printing method comprising the steps of screen printing a central portion of the surface and screen printing a peripheral portion of the surface. (2) In a dial printing device for providing screen printing on the surface of a substrate having a convexly curved surface,
A dial printing device comprising: a first screen printing means for screen printing a central portion of the surface; and a second screen printing means for screen printing a peripheral portion of the surface.