JPS61163296A - Production of multicolored timepiece case - Google Patents

Abstract

PURPOSE:To produce a multicolored timepiece case in the less manhour and the low cost by forming an anodized film on a case of Al or Al alloy, there after performing the required multicolored print on the case and furthermore performing the alumite dyeing and the sealing. CONSTITUTION:An anodized film is formed on a timepieces case consisting of Al or Al alloy and the print of one and more times is performed on the film thereof to penetrate the printing ink into the pores of the above-mentioned oxidized film and to color it. The alumite dyeing such as gold color is performed on the parts other than the print. Thereafter the above-mentioned pores is sealed to perform the fixation of the color and thereby the inexpensive multicolored timepiece case is obtained.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an alumite treatment method for a watch case.

[Conventional technology]

In the case of making a watch case multicolored by conventional alumite treatment (anodizing, coloring, and sealing), the following method was used.

1. After dyeing the alumite, mask the necessary areas with printing, then bleach the other areas, and repeat dyeing, masking, and bleaching again to create multiple colors.

2. After alumite treatment, remove part of the oxide film by machining such as cutting, and perform alumite treatment again.
Multicolored by repeated removal of partial oxide film through alumite treatment and machining.

[Problem that the invention seeks to solve]

However, these methods require extra man-hours to create multiple colors (for example, method 1 requires masking, decolorization, and making electrical contacts; method 2 requires machining and making electrical contacts). In many cases, this resulted in a considerable increase in costs. The present invention is to develop an inexpensive method for manufacturing a multicolor watch that eliminates such man-hours.

[Means for solving problems]

The multicolor method of the present invention involves anodizing the aluminum case to form large pores, and then printing a part of the case (the printing ink is of a particle size that can sufficiently penetrate into the large pores (the hole diameter is about angstroms) of the alumite layer. The pore size is infiltrated with ink and colored using a method of printing, and this printing is performed one or more times, followed by alumite dyeing and pore sealing treatment. This method will be explained more clearly using a plate as an example.

Figure 1 (a) shows a case where the letter A is black 1 and the background is gold 2. In this case, after forming the anodic oxide film, the black letter A is first screen-printed using ink (dye) to make the pores large. so that it enters. (Figure (h) shows a cross-sectional view after printing, and figure (C) shows an enlarged view.) Next, the undyed areas are colored gold by gold alumite dyeing, and the pores are sealed using a trowel. ,
Fix the color. This creates a two-tone pattern with black letters and a gold background.

Figure 2 (α) shows that after the anodic oxide film is formed, the printing of blue 1 and yellow 2 are partially overlapped to express the edge 3, which is a mixed color of blue, yellow, and blue and yellow, and finally the alumite dyeing. (Gold 4)
・This is a representation of the sealing process, and 5 color cross-sections are shown in (b).

〔Example〕

A multicolored watch case according to the invention is shown below.

Figure 5 shows a two-tone black and gold model with stripes 1 on the slopes at 3 o'clock and 9 o'clock printed with dots, and the base treated with gold alumite.

FIG. 4 shows a model in which dot printing 3 is superimposed on gray printing 4 and then gold alumite treatment is applied.

〔effect〕

As described above, according to the present invention, after forming the anodic oxide film,
By printing several times to color parts, anodizing the remaining parts, and finally sealing them with a sealing process, compared to the conventional masking/bleaching method or mechanical film removal method,
It becomes possible to manufacture multi-colored time-opening cases at low cost and with far fewer man-hours.

[Brief explanation of the drawing]

In the present invention, Figures 1 and 2 are diagrams for explaining the invention, and Figure 1 (a) is a plan view with the letter A printed on an aluminum flat plate and the base treated with alumite (gold color). (h) is a cross-sectional view, and (C) is an enlarged schematic diagram showing printing ink permeating into the pore size. Figure 2 shows that blue print 1 and yellow print 2 are superimposed, and the combined part 3 becomes green. (α) shows a plan view of the above printed aluminum plate with the base 4 treated with alumite (gold color), and (b) shows an enlarged view of the printed dye part of the c-c' cross section of (α). . 3 and 4 show examples of the present invention, and FIG. 3 is a perspective view in which 1 is printed with dots and the background is gold-colored alumite treated. Figure 4 is also a perspective view, with gray printing No. 4 and dot printing No. 3 overlapping, and the background is gold anodized.

Claims (1)

[Claims] A method for manufacturing a multicolored watch case, which comprises forming an anodized film on aluminum or an aluminum alloy (hereinafter abbreviated as aluminum), printing it one or more times, and finally applying alumite dyeing and sealing treatment. .