JPH07333356A - Dial and manufacture thereof - Google Patents

Abstract

PURPOSE:To obtain a dial for wrist watch having solid appearance while reducing the number of manufacturing steps and the cost by partially removing a photomask film, stuck to a dial base, up to the plating layer of the dial and then subjecting the removed part to plating or printing with a paint. CONSTITUTION:A dial applied with a plating layer 3.2 and a paint film 3.1 is further applied with a resist layer from which a resist 3.4 is partially removed in desired shape by photomechapical process, and a photomask film comprising a film base layer 3-6 supporting the resist layer and an adhesive layer 3.7. The film base layer 3.6, the adhesive layer 3.7, the paint film 3.1 and the superficial part of the plating layer 3.2 are then removed from the dial by blasting. Subsequently, the dial is subjected to plating 3.8 and the photomask film is removed therefrom. This method facilitate manufacture of a dial for wrist watch the character of desired shape has solid appearance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a dial used for a wristwatch or an instrument.

[0002]

2. Description of the Related Art A conventional manufacturing process of a wristwatch dial is shown in FIG.
Will be described below. In FIG. 2, 2.1 is a dial base, 2.2 is a hole for typesetting in the dial base 2.1, 2.3 is a plating layer, 2.4 is a plating layer 2 3 is a coating film on 3, 2.5 is a typeset planted on the dial base 2.1, 2.6 is a typeset 2
5 is a caulking portion for attaching the dial base 2 and 1.

In the case of expressing a character with a three-dimensional effect, the conventional wristwatch dial plate is provided with a planting hole 2.2 in the dial base 2.1, is provided with a basis weight, and is plated on it.
3, painted 2.4, etc., and planted letters 2.5 such as letters on it to make a dial. Further, in the case of expressing characters having a complicated shape, the dial plate base is provided with a basis weight, and the characters and the like are printed on the dial plate by plating, painting and the like.

[0004]

However, when a letter or the like is planted, a three-dimensional dial can be obtained. However, since the letters and the like are processed and produced separately, and the seeds are implanted in the base, the number of processing steps is large, It has the disadvantage of high cost. In addition, when printing characters, etc., the number of processing steps can be reduced and the cost can be reduced, but it is not possible to increase the thickness of the printed part, and it is difficult to express characters with a three-dimensional effect. It was That is, it is a problem to manufacture a character having a three-dimensional effect without reducing the number of processing steps and increasing the cost. An object of the present invention is to newly devise a conventional method for manufacturing a wristwatch dial plate to solve such a problem, without increasing the number of processing steps for a dial plate made up of a three-dimensional character. It is to be realized.

[0005]

In order to solve the above-mentioned problems, a photomask film from which a resist has been removed in the shape of characters by exposure and development is attached on a painted dial plate. The photomask film includes a resist layer, a base layer supporting the resist layer, and an adhesive layer.
By blasting the dial on which the photomask is attached from the surface on which the film is attached, the portion where the resist has been removed scrapes off the base layer of the film, and after penetrating the base layer, the dial The paint film is removed from the painted surface to expose the metal surface. By adjusting the pressure of the blast, the resist is not removed by the blast, so the edge is almost perpendicular to the dial according to the pattern of the photomask film,
The metal surface of the dial can be exposed without reducing the thickness of the film. In this way, the dial is pasted on the dial having the film with the metal surface exposed in the pattern of characters or the like, or after printing, the film is removed. By doing this, letters with the same thickness as the film can be formed on the dial, so the number of steps is reduced compared to the conventional method and the letters for wristwatches composed of letters with a three-dimensional effect etc. The board can be obtained.

[0006]

In the method of manufacturing a wristwatch dial plate constructed as described above, it is possible to reduce the number of steps for realizing a character having a three-dimensional effect and the like, so that the cost can be reduced. Furthermore, conventionally, when overlay plating is applied on the coated surface, a conductive coating must be formed on the entire surface,
In this method, since the coated surface is removed by blasting or the like to expose the metal surface, there is no need to form the conductive coating, the productivity is improved, and the metal surface is appropriately roughened to reduce the surface area. Adhesion is improved by increasing the number. Moreover, since a photomask film prepared by a photoengraving method is used, a fine pattern or the like can be formed on the dial.

[0007]

【Example】

(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a dial made by implementing the present invention.
A radial coating (not shown) is formed on the surface of the plate, the plating layers 1 and 3 are formed thereon, and the coating films 1 and 2 are formed thereon. From the metal surface of the plating layers 1 and 3 to the coating film 1
Patterns 1 and 1, such as characters by overlay plating or paint, are projected on the dial plate base through two. The manufacturing method will be described in detail below.

FIG. 3 is a sectional view showing each step of the dial plate manufacturing method according to the present invention. FIG. 3 (a) shows a dial base 3.3 made of a brass plate having a thickness of 0.4 mm. Radial basis weight is applied to the dial base, and Ni is placed on it.
FIG. 3 is a cross-sectional view of a dial which has been surface-finished by plating, Ag plating 3.2, and then white painting 3.1.

In FIG. 3 (b), a photomask film composed of a resist layer 3.4, a base layer 3.6 supporting the resist layer 3.4, and an adhesive layer 3.7 is attached on the dial base. FIG. The film has already been exposed and developed with patterns 3 and 5 of characters and the like by a plate such as characters and the resist has been removed.

FIG. 3 (c) is a sectional view of the dial shown in FIG. 3 (b) after the dial is blasted from the vertical direction of the dial base. The blast pressure is adjusted so as to remove the base layers 3 and 6 and the coating film 3.1 without removing the resists 3 and 4. Therefore, after the blasting, the dial base is changed to the pattern shape of the photomask film. Expose the metal surface. Further, at this time, the surface of the metal surface is appropriately roughened by blasting or the like, so that the surface area of this portion increases.

FIG. 3 (d) shows that the dial plate of FIG. 3 (c) is attached to one of the electrodes, and the metal surface exposed by immersing the dial plate in the plating solution is plated with the same thickness as the film.
8 is a cross-sectional view after applying 8. FIG. 3E is the same as FIG.
It is sectional drawing of the dial after removing the photomask film stuck on the dial of (d). Since the thickness of the film is not thinned by processing such as blasting, the pattern such as letters is formed when the film is removed after the plating treatment. Since the pattern of the characters and the like is as thick as the film, it has been found that it is effective for creating a character having a three-dimensional effect on the dial for a wristwatch.

(Embodiment 2) FIG. 4 is a cross-sectional view showing each step of a method of manufacturing a dial which changes the steps after the step of FIG. 3 (c) and realizes a pattern such as a three-dimensional character by printing. is there. FIG. 4A is a sectional view of the dial formed by the steps up to FIG. 3C.

4 (b) and 4 (c) show the dial layer 4 of the dial shown in FIG. 4 (a) by blasting or the like.
The case where the paints 4 and 9 are embedded in the metal surface exposed by etching to 6 and the case where the paints 4 and 9 are used.
It is a dial cross-sectional view after embedding.

FIG. 4D is a sectional view of the dial after removing the photomask film attached to the dial of FIG. 4C. As described above, the resist layer 4.1 is not scraped off by blasting or the like, and can be used as a screen printing plate.
・ Paints 4 and 9 can be printed with 8 or the like.
It has been found that the characters and other parts 4.2 are more effective in printing the paint thicker than the conventional screen printing or pad printing.

(Embodiment 3) FIG. 5 is a step of a method of manufacturing a dial which changes the steps after FIG. 3 (c) and realizes a pattern such as a letter having a three-dimensional effect as compared with the case of FIG. FIG.

FIG. 5 (a) is a sectional view of the dial prepared by the steps up to FIG. 3 (c). Figure 5 (b)
FIG. 6 is a sectional view of the dial after the conductive paints 5.8 are embedded in the metal surface (plating layers 5.6) of the dial exposed by spray coating or the like on the dial of FIG. 5 (a).

FIG. 5C is a sectional view after removing the photomask film attached to the dial plate of FIG. 5B. FIG. 5D is a cross-sectional view after the dial plate of FIG. 5C is plated with 5.9. Conductive paint 5
Since 8 is in contact with the dial plate metal surface (plating layers 5 and 6), it is not necessary to provide an electrode for plating on the coating film 5 and 5, and the thickness of the plating portion 5 and 9 is not necessary. Since it is not limited by the film, it was found to be effective for thickly plating patterns such as letters.

[0018]

Industrial Applicability The present invention is effective in giving a three-dimensional effect to the characters and the like on the dial plate of a wristwatch or the like, reducing the number of steps, and suppressing the cost. Further, since the photomask film formed by the photoengraving method is used, there is an effect of realizing a fine pattern having a three-dimensional effect.

[Brief description of drawings]

FIG. 1 is a structural view of a dial manufactured by a manufacturing process of the present invention.

FIG. 2 is a diagram showing a dial plate manufacturing process based on a conventional method.

FIG. 3 is a cross-sectional view showing each step of the method of manufacturing a dial according to the present invention based on the first embodiment.

FIG. 4 is a cross-sectional view showing each step of the method of manufacturing a dial according to the present invention based on the second embodiment.

FIG. 5 is a cross-sectional view showing each step of the method of manufacturing a dial according to the present invention based on the third embodiment.

[Explanation of symbols]

 1.1 Patterns such as letters 1.2 Coating film 1.3 Plating layer 1.4 Dial base 2.1 2.1 Dial base 2.2 Holes for typesetting 2.3 Plating layer 2.4 Coating film 2.5 Planting Character 2.6 Caulking area 3.1 Coating film 3.2 Plating layer 3.3 Dial base 3.4 Resist layer 3.5 Residue removal area 3.6 Film base (support layer) 3.7 Adhesion layer 3.8 Plating 4.1 Resist layer 4.2 Part removed by blasting, etc. 4.3 Film base (support layer) 4.4 Adhesive layer 4.5 Coating film 4.6 Plating layer 4.7 Dial plate base 4.8 Squeegee 4.9 Paints 5.1 Resist layer 5.2 Parts removed by blasting, etc. 5.3 Film base (support layer) 5.4 Adhesive layer 5.5 Coating film 5.6 Plating layer 5.7 Dial base 5・ 8 Conductive paint 5 ・9 plating

Claims (3)

[Claims] 1. A step of surface-treating a dial base to obtain a dial, a resist layer is formed on a photomask film having a base layer and an adhesive layer, and a part of the resist layer is formed into a pattern such as letters. A step of removing, a step of pasting the photomask film on the dial, a step of overlay plating on the removed portion of the photomask film reaching the metal surface of the dial of the removed portion of the resist layer, Then, a step of removing the photomask film is provided, which is a method for manufacturing a dial. 2. A step of surface-treating a dial base to obtain a dial, a resist layer is formed on a photomask film having a base layer and an adhesive layer, and a part of the resist layer is formed into a pattern such as letters. A step of removing, a step of embedding a coating material in a portion of the dial layer where the photomask film is removed, which reaches the metal surface of the dial portion of the removed portion of the resist layer, and a step of removing the photomask film after the coating material is dried. A method of manufacturing a dial, comprising: 3. A dial layer provided on the dial base, a coating film provided on the plating layer, and a pattern of characters or the like protruding through the coating film on the dial base. The dial to do.