JPS58202884A - A dial plate for time piece - Google Patents

Abstract

PURPOSE:To make a dial plate for a time piece look highly massive with a painted surface of a high variety and smooth without regularities created by combination of two color paints utilizing a ultraviolet ray hardening type paint. CONSTITUTION:A transparent or color ultraviolet ray hardening paint 2 is applied on the surface of a dial plate base 1 at a proper at a proper thickness. Then, after a negative film 3 is masked to leave a time scale, a name, a mark or a pattern, ultraviolet ray irradiates the surface and an alkali solution or the like is used to remove the parts not exposed to the ray. An ultraviolet ray hardening paint 4 different in the color from previous paint is applied on the entire surface thereof covering the parts removed and after it is hardened by irradiation of ultraviolet ray, the paint is ground until the boundary with the time scale or the like appears. The ultraviolet ray hardening paint 4 can be replaced with a thermosetting paint. Thus, a highly massive-looking dial plate is obtained with a painted surface of a high variety and without regularities by a simple process.

Description

[Detailed description of the invention] The present invention relates to a watch dial.

Conventional dials generally have a transparent or colored dial with a pattern on the base and are painted amber. The present invention aims to expand the variety of dial design by combining two color paints using ultraviolet curable paints.

Embodiments of the present invention will be described below based on the drawings.

1 to 5 are cross-sectional views illustrating the process of manufacturing a timepiece dial according to the present invention. Dial base IK transparent or expanded color UV curable paint 2f: Apply to an appropriate thickness and mask with negative film 3t to leave scales, names, marks, patterns, etc., for example, 80 W. /c
Irradiate ultraviolet rays with a tm high-pressure mercury lamp or metal halide lamp (Figure 2). Masking allows the ultraviolet rays to pass through and removes the unstained parts with alkaline water, leaving a layer of hour scales, enlarged names, marks, patterns, etc. (Figure 3)
Next, the above-mentioned ultraviolet curable paint and the outer package ultraviolet curable paint or thermosetting paint 4 are applied to the extent that the removed area is covered, and cured using the respective methods (see Figure 4). The hardening type paint part is polished by a lapping method until the boundaries of the hour scale, enlarged name, i-ri, pattern, etc. appear (Figure 5).According to the present invention described above, the characteristics of the ultraviolet curable paint are utilized. A high-quality watch dial with a smooth FK surface without irregularities and rich in new variety never seen before can be obtained by combining two colors of paint through a simple process.

[Brief explanation of drawings]

FIGS. 1 to 5 are cross-sectional views illustrating the steps of the dial of the present invention. 1. Dial pace, 20. UV-curable paint layer, 3.
, negative film, 40. Ultraviolet curing or thermosetting paint. Applying for the above applicants Co., Ltd. Daini Kojisha Agency Public Conductor Makigai 1 Mutual Ceremony 〒 〒 °】 〒 〒 〒 ¥ 30] Fig. 4] Fig. 5777 ~ノ3 2 ~l -? l-? l 2

Claims (1)

[Claims] Apply transparent or colored ultraviolet curing paint to an appropriate thickness on the dial face, mask it with a negative film to leave the hour scale, name, mark, or pattern, and irradiate it with ultraviolet rays. Remove the uncured portion through which ultraviolet rays do not pass, leaving the above-mentioned hour scale, name, mark, pattern, etc., and apply an ultraviolet curing paint or thermosetting paint TC of a different color from the paint described in KlII on the removed portion, A watch dial consisting of a combination of two-color paints characterized by drying and polishing until the boundary with the first cured ultraviolet-curable paint portion appears.