JPH01132773A - Production of face of timepiece - Google Patents

Abstract

PURPOSE:To produce the title face of a timepiece patterned with a swollen metal by forming a resist film on the chemical nickel plating layer applied on a nonconductive substrate, etching the plating layer, and releasing the resist film to form a metal layer. CONSTITUTION:A nickel plating layer is formed on the face of a timepiece consisting of a nonconductor by chemical nickel plating as the first metal layer. A resist film is formed on a part of the upper surface of the metal plating layer by the photoresist method. The part not coated with the resist film is etched, and then the resist film is released. The second metal layer is subsequently formed on the first metal layer. A gold plating layer by the chemical gold plating method or a palladium plating layer by the chemical palladium plating method is appropriately used as the second metal layer. By this method, the face of a timepiece having swollen letters with metallic brilliance or an intricate pattern is obtained.

Description

[Detailed description of the invention] C Industrial application field] The present invention relates to a method of manufacturing a watch dial.

[Summary of the invention]

In the present invention, a nickel plating layer is formed as a first metal layer on a substrate of a watch dial made of a non-conductive material by a chemical nickel plating method, and then a part of the upper surface of the nickel plating layer is forming a resist film, etching the part without the resist film, then peeling off the resist film, and forming a second metal layer on the first metal layer;
By forming a gold plating layer using a chemical gold plating method, a palladium plating layer using a chemical palladium plating method, or a palladium plating layer using a chemical palladium plating method, it is possible to create raised letters, scales, or complex patterns with a metallic shine. It was designed to realize the following.

[Conventional technology]

Conventionally, embossing using a press has been used as a technique for obtaining a watch dial with raised letters, scales, or patterns that have a metallic shine.

[Problem that the invention seeks to solve]

Embossing as above is done using a brass type dial.
This method used a convex press from the back of the dial to emboss letters, scales, patterns, etc. on the dial surface.
It was not possible to express complex patterns or thin lines. Furthermore, since the embossing process was performed after the dial was coated with paint, there was a drawback that the paint was likely to peel or distort at the boundary between the dial protrusion and the base. was.

[Means for solving problems]

In order to solve the above problems, in the present invention, a nickel plating layer is formed as a first metal layer by a chemical nickel plating method on a substrate of a watch dial made of a non-conductive material, and then the nickel plating layer is formed by a chemical nickel plating method. A resist film is formed on a part of the upper surface of the layer, and the parts without the resist film are etched.
Thereafter, the resist film is peeled off, and a gold plating layer using a chemical gold plating method or a palladium plating layer using a chemical palladium plating method is formed as a second metal layer on the first metal layer. We have realized the creation of shiny raised letters, scales, and complex patterns.

[Effect]

The present invention employs a chemical plating method to plate a metal or alloy on a non-quaternary electric body. The chemical nickel plating method is adopted because it is relatively difficult to directly apply chemical nickel plating or chemical palladium plating to non-conductors, and it is possible to achieve a thickness of about 10 μm. The chemical gold plating method or the chemical palladium plating method is adopted to obtain the metallic shine of letters, scales, or complex patterns, which is the original purpose, and also to protect the chemical nickel plating layer of the first metal layer. It is adopted for this purpose. Furthermore, since each letter, scale, etc. on the dial is independent, it is impossible to plate metal or alloy with electroplating, so chemical plating is used. .

〔Example〕

ABS (acrylonitrile, butadiene, styrene)
A chemical nickel plating film layer 2 of 5 μm thickness is formed on a resin watch dial 1, a resist film is formed on the upper surface of this nickel layer by a photoresist method, etc., and then the parts without the resist film are etched, and then the resist film is removed. After removing the film, a chemical palladium plating film N3 with a thickness of 5 μm was formed to obtain a watch dial as shown in FIG.

As described above, it was possible to obtain a watch dial plate with metallic shine and having letters, scales, or complex patterns raised by about 10 μm formed on its surface.

〔Effect of the invention〕

In a watch dial, the present invention forms a nickel plating layer as a first metal layer by a chemical nickel plating method on a substrate of a watch dial made of a non-conductive material, and then forms a part of the upper surface of the nickel plating layer. A resist film is formed on the surface, the parts without the resist film are etched, and then the resist film is peeled off, and a gold plating layer is formed on the first metal layer as a second metal layer using a chemical gold plating method. Alternatively, by forming a palladium plating layer using a chemical palladium plating method, it was possible to create raised letters, scales, or complex patterns with a metallic shine.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the present invention. 1...Clock dial 2...Chemical nickel plating film layer 3...Chemical palladium plating film layer that's all Applicant: Seiko Electronics Industries Co., Ltd.

Claims (2)

[Claims] (1) In a watch dial, after forming a nickel plating layer as the first metal layer by a chemical nickel plating method on the substrate of the watch dial made of a non-conductive material, a part of the upper surface of the nickel plating layer is A method for manufacturing a watch dial, comprising forming a resist film, etching the portion without the resist film, then peeling off the resist film, and forming a second metal layer on the first metal layer. . (2) Claim 1, characterized in that the second metal layer is a gold plating layer formed by a chemical gold plating method or a palladium plating layer formed by a chemical palladium plating method.
Method for manufacturing a clock dial as described in Section 1.