JPS5834194A - Manufacture of clock dial - Google Patents

Abstract

PURPOSE:To manufacture a dial having swelling and a fine patern, by forming a resist film partially on the upper surface of a clock dial base plate consisting of a conductive material, and forming a metallic layer by electrolytic plating, on the part on which the resist film has been formed. CONSTITUTION:A dial base plate 2 is formed by punching a metallic raw material whose thickness is about 0.2-0.3mm., and onto the upper surface, necessary covering and various plating treatments are executed. Subsequently, on the upper surface of the base plate, a partial resist film 1 is formed by a dry film. After that, on a desired part on which the resist film has not been formed by electrolytic plating, a metallic layer 3 is formed. In the end, by peeling off the resist film 1, swelling having rise and a very fine pattern are manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for applying a resist film using a dry film to a watch dial having at least a conductive material on the surface of the substrate, and then applying a resist film to the portions where the resist film is not applied. The present invention relates to a method of manufacturing a watch face plate plated with a thick patterned metal layer.

With conventional polycinnamate vinyl or rubber resin, the thickness is limited to 4 μm (micrometer) by layering or other methods. As shown in the figure, there is a drawback that the width of the pattern, etc., which should originally be A, becomes as wide as B. FIG. 1 shows a cross-sectional view of a watch dial plated with a conventional resist film. In Figure 1,
1 shows a resin film, 2F1 dial substrate, and 3Fi metal layer. In other words, in plating thicker than the thickness of the resist film 1, the width of the pattern etc. was wide and the second texture was significantly impaired. Also, the resist film 1 is narrowed in advance so that the desired width is B.
2, the bonding area with the substrate 2 becomes narrow as shown in A, and the adhesion strength becomes insufficient.

Therefore, the conventional technology has the above-mentioned drawbacks and it is very difficult to create a three-dimensional effect.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and aims to manufacture a dial having a fine pattern with an unprecedented bulge without compromising the line width.

The gist of the invention is as described in the claims.

Next, embodiments of the present invention will be briefly described with reference to the drawings. FIGS. 2(a), (b) and 3 are cross-sectional views showing thick plating formed on a dial substrate showing an embodiment of the present invention,
FIG. 2(b) shows a state in which the resist film has been peeled off. A dial substrate 2 is formed by punching out the outer diameter and center hole of the time display part of a metal raw material with a thickness of 0.2 wm (millimeter) to 0.3 mm using a press, etc., and the fabric weight necessary for the dial is stamped on the upper surface. and various plating treatments.

Next, a water-soluble or solvent-based dry film, for example, one with a film thickness of 2011 mm%, 60 mm, 80 mm, etc., is laminated, exposed, and developed on the dial substrate under specified conditions to form a partial resist film 1. Then, as shown in Fig. 2, electrolytic plating is applied to a desired portion of the upper surface of the substrate, such as bright nickel plating, copper plating, gold plating, or chrome plating, although it may be a single layer, for example, gold plating, etc. Since this is very expensive, gold plating 5 may be further applied on top of the other metal 4 to form two layers, as shown in FIG.

Afterwards, by peeling off the resist film 1, as shown in FIG.
As shown in )), it has become possible to produce embossed seams with rising edges, which were previously considered impossible, as well as ultra-fine patterns.

The above examples have described the case of a metal substrate, but a conductive layer made of silver, copper, nickel, metal oxide, etc. is electrolessly plated on the top surface of a nonmetallic material such as ceramic, precious stone, or plastic. The substrate may be formed by a vapor phase method or the like.

(Hereinafter, blank space) As described above, according to the present invention, a watch equipped with the above-mentioned dial plate is different from conventional watches in that the text or pattern looks as if it were made of metal. It has raised edges 2, making it possible to obtain a watch with a new texture that has never been seen before. In addition, it is ultra-fine, unlike conventional metal hour markers and patterns, and does not spread flatly in the upper direction. It is also possible to satisfy the weather resistance required for the dial.

[Brief explanation of the drawing]

Figure 1 shows a conventional example of thick plating on a substrate. FIG. FIGS. 2(a), (b), and 3 are cross-sectional views showing embodiments of the present invention. 1... Resist film 2... Dial board 3 days, Plating 4... Plating 5... Gold plating, etc., Fang 1 (t), )゛ (b Fang 2r5!i Fang, 38

Claims (1)

[Claims] A watch face plate comprising at least a resist film using a dry film applied to the upper surface of a watch face dial substrate made of an electrically conductive material, and then a metal layer formed by electrolytic plating on the areas where the resist film is not applied. Production method.