Manufacturing method for decorative parts

Abstract

To provide decorative parts and decorative articles with a more luxurious feel. [Solution] The decorative part 1 has a mirrored surface that creates a mirror effect and is made of translucent material formed from sapphire glass; a non-mirror surface that is provided adjacent to the mirrored surface on the surface and does not create a mirror effect due to the surface roughness of the translucent material, but the color of the underlying layer appears opaque; and a thin metal film layer that is vapor-deposited on the mirrored surface and non-mirror surface with a colored metal.

Description

[Technical Field]

[0001] The present invention relates to a component for a decorative item and a decorative item. [Background technology]

[0002] For example, people generally prefer flashy and luxurious accessories such as watches, brooches, and company badges. In addition, with the recent pet boom, accessories worn around the neck of pets are becoming more luxurious.

[0003] The more luxurious the ornaments, the more people want to wear them, but at the same time, they are afraid of scratches, so they tend to end up putting them away without wearing them. One of the reasons for this is that conventional ornaments were made by applying decorations to ordinary glass, which makes the glass surface easily scratched.

[0004] Sapphire glass has sometimes been used instead of regular glass. Sapphire glass has the advantage of being scratch-resistant. Technology has also been proposed to decorate sapphire glass to create luxurious ornaments (for example, Patent Document 1).

[0005] However, the trend towards luxury goods is becoming stronger in the market, and there is a demand for decorative goods with a more luxurious feel. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2025-14765 Summary of the Invention [Problem to be solved by the invention]

[0007] The problem to be solved by the present invention is to provide a decorative component and a decorative item that have a more luxurious feel.

[0008] The contents of the above "Background Art" and "Problem to be Solved by the Invention" indicate the opportunity (trigger) that led to the invention, and do not limit the technical scope of the invention, nor do they permit a limited interpretation of the technical scope of the invention (see 2005 (Gyo-Ke) No. 10042 and the Patent Office Examination Guidelines, Part II, Chapter 2, Section 2, 3.2.1 as of the filing date). [Means for solving the problem]

[0009] The present invention provides A method for manufacturing a decorative part, comprising: a light-receiving layer forming step of forming a light-receiving layer made of metal or pigment ink, which is not transparent to laser light, superimposed on a mirror surface portion that creates a mirror effect on the surface of a light-transmitting material formed by sapphire glass; a non-mirror surface forming step of irradiating the light-receiving layer on the surface with a laser beam to form a non-mirror surface portion that does not create a mirror effect but allows the color of the underlying layer to appear opaque; a light-receiving layer removing step of removing the light-receiving layer; and a metal thin film layer forming step of forming a metal thin film layer by vapor-depositing a colored metal on the mirror surface portion and the non-mirror surface portion of the surface. to provide. [Effects of the Invention]

[0010] According to the present invention, decorative components and decorative articles with a more luxurious feel can be provided. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 2 is a front view of the decorative component. [Figure 2] 2 is a cross-sectional view of the main body taken along line AA in FIG. 1. [Figure 3] 1A to 1C are diagrams illustrating a method for forming a decorative surface. [Figure 4] FIG. 1 is a diagram showing a wristwatch as an example of an accessory. [Figure 5] FIG. 10 is a diagram showing a medal as an example of an ornament. [Figure 6] FIG. 10 is a diagram showing a commemorative frame, which is an example of an ornament. DETAILED DESCRIPTION OF THE INVENTION

[0012] (decorative parts) A decorative component 1 and decorative item 30 according to one embodiment of the present invention will now be described in detail.

[0013] FIG. 1 is a front view of an decorative component 1 according to this embodiment. A pet name tag 30A is shown in FIG. 1 as an example of an decorative component 30. As shown in FIG. 1, the decorative component 1 includes a main body 10 formed from a transparent, translucent material. Transparent materials include ordinary glass, crystal, synthetic resin, and sapphire glass.

[0014] The main body 10 has a mirrored surface 10M on the surface facing the observer of the decorative component 1, which has a mirror-like effect that reflects light like a mirror, allowing the appearance or image of an object to be seen by reflecting light when observed through a translucent material such as sapphire glass of the main body 10, and a non-mirrored surface P that does not reflect light like a mirror. In the example shown in Figure 1, the non-mirrored surface P is shown as a design P1 created from a photograph or the like, and letters P2.

[0015] The non-mirror portion P can be colored, or it can be a gradation portion 10G in which the mirror effect gradually changes to a non-mirror effect from one side to the other. The decorative component 1 is fitted into the casing 2 so that the mirror portion 10M and the non-mirror portion P can be seen by an observer through the translucent material such as sapphire glass of the main body 10.

[0016] FIG. 2 is a cross-sectional view of the main body 10 taken along line AA in FIG. 1. In FIG. 2, the surface facing the viewer will be referred to as surface 10S, and the surface on which the mirrored portion 10M is provided will be referred to as decorative surface 10R. As shown in FIG. 2(A), in the cross section of the main body 10, surface 10S and decorative surface 10R can both be straight lines. In this case, surface 10S and decorative surface 10R are flush with each other and flat. Surface 10S and decorative surface 10R may be parallel to each other, or may be oblique so that their extended planes intersect at an angle.

[0017] As shown in Fig. 2(B), the main body 10 may have a surface 10S that is flush and flat, and a decorative surface 10R that has linear irregularities in cross section, with the decorative surface 10R having a shape in which a plurality of flush, flat surfaces are arranged at an angle to each other in a plan view. Fig. 2(B) shows an example in which the cross section of the decorative surface 10R has only linear irregularities, but the decorative surface 10R may also be formed so that the cross section of the decorative surface 10R includes both linear and curved irregularities.

[0018] If the decorative surface 10R is formed as shown in Figure 2(B), when an observer views the decorative surface 10R from the side of the surface 10S through a translucent material such as sapphire glass of the main body 10, the observer can get a more decorative visual effect, further enhancing the sense of luxury.

[0019] As shown in Fig. 2(C), the main body 10 may have a surface 10S that is flush and flat, and a decorative surface 10R that has a cross section that forms a curved line. While Fig. 2(C) shows an example in which the cross section of the decorative surface 10R has only a curved concave shape, the decorative surface 10R may be formed so that the cross section includes only a curved convex shape, or a curved convex shape, a curved concave shape, and a curved convex shape.

[0020] If the decorative surface 10R is formed as shown in Figure 2(C), when an observer views the decorative surface 10R from the side of the surface 10S through a translucent material such as sapphire glass of the main body 10, the observer will be able to see a more unique decorative visual effect, further enhancing the sense of luxury.

[0021] As shown in Fig. 2(D), the main body 10 may have a surface 10S formed so that its cross section describes a curved line, and a decorative surface 10R having linear irregularities in cross section, with the decorative surface 10R having a shape in which a plurality of flush flat surfaces are arranged at an angle to each other in a plan view. Fig. 2(D) shows an example in which the cross section of the decorative surface 10R has only linear irregularities, but the decorative surface 10R may also be formed so that its cross section includes both linear and curved irregularities.

[0022] If the decorative surface 10R is formed as shown in Figure 2(D), when an observer views the decorative surface 10R from the side of the surface 10S through a translucent material such as sapphire glass of the main body 10, the observer will be able to see a more original and unusual decorative visual effect, further enhancing the sense of luxury.

[0023] 2(A) to 2(D) above, the shape of front surface 10S and the shape of decorative surface 10R may be reversed. If decorative surface 10R is reversed from the shapes shown in Figures 2(A) to 2(D), when an observer views decorative surface 10R from the front surface 10S side through the translucent sapphire glass of main body 10, the observer will receive a very unique and unusual decorative visual effect, which will greatly enhance the sense of novelty and luxury.

[0024] 3 is a diagram showing a schematic diagram of a method for forming decorative surface 10R. As shown in FIG. 3(A), first, surface 10S and decorative surface 10R are polished smoothly. It is desirable that the surface roughness of surface 10S and decorative surface 10R be as follows, as measured by the method described in, for example, JIS B 0601 (1994) and JIS B 0031 (1994). However, the surface roughness may be outside this range as long as it can form mirror surface portion 10M that exhibits a mirror effect when viewed by an observer through a light-transmitting material such as sapphire glass of main body 10.

[0025] Surface roughness is defined as the arithmetic mean value of the parameters representing surface roughness, such as arithmetic mean roughness (Ra), maximum height (Ry), ten-point mean roughness (Rz), average spacing of asperities (Sm), average spacing of local peaks (S), and load length ratio (tp), measured at randomly extracted portions of the surface of the object. In this case, the surface 10S and decorative surface 10R are polished smoothly so that the surface roughness measured with a cutoff value of λc = 0.08 mm is between Ra 0.002 μm (2 nm) and Ra 0.020 μm (20 nm). Any known polishing technique can be used as appropriate.

[0026] As shown in Figure 3(B), next, a light-receiving layer 11 is formed on the entire surface of the decorative surface 10R using a material that is opaque to laser beams. Examples of materials that are opaque to laser beams include metals and metal compounds. Metals such as chromium (Cr) can be selected as appropriate from relatively inexpensive and readily available metals, and metal compounds such as silica (SiO2) and zirconia (ZrO2) can be selected as appropriate from relatively inexpensive and readily available metals.

[0027] Furthermore, pigment ink can also be selected as a material that is opaque to laser beams. When pigment ink is selected as a material that is opaque to laser beams, the light-receiving layer 11 is formed over the entire surface of the decorative surface 10R by printing the pigment ink using a known technique such as inkjet printing or silkscreen printing.

[0028] As shown in Figure 3(C), a laser beam is then irradiated onto the decorative surface 10R to burn the non-mirror portion P and increase the surface roughness. In other words, the non-mirror portion P of the decorative surface 10R is roughened to the extent that no mirror effect is produced. The non-mirror portion P is created by adjusting the position and intensity of the laser beam irradiation.

[0029] Next, the remaining material that is opaque to the laser beam is washed away, forming a non-mirror portion P on the decorative surface 10R that does not produce a mirror effect. Here, because the laser beam passes through a translucent material such as sapphire glass, the surface roughness of the mirror portion 10M, which is the portion of the decorative surface 10R other than the non-mirror portion P, does not increase.

[0030] As shown in FIG. 3(D), a metal film is then vapor-deposited onto the decorative surface 10R by a known method. The vapor-deposited metal can be selected based on its color. For example, cobalt (Co) can be used for blue, gold (Au) for red, and brass (an alloy of copper (Cu) and zinc (Zn) containing 20% ​​or more zinc) for yellow. Furthermore, a color image can be formed using these three primary colors.

[0031] By undergoing the above-described steps, the decorative surface 10R is formed with a non-mirror portion P where the color of the vapor-deposited metal appears opaque and a mirror portion 10M that exhibits a mirror effect.

[0032] (decorations) (watch) Figure 4 shows a wristwatch 30B, an example of an ornamental accessory 30. The band is not shown in Figure 4. As shown in Figure 4, the wristwatch 30B comprises a main case 31 and an ornamental accessory component 1.

[0033] The watch body case 31 contains the movement of the watch and the dial 10B, which is placed on the viewer's side of the movement. The watch 30B further comprises a bezel case 10A, which is an ornamental component 1, the dial 10B, and the crystal 10C.

[0034] Bezel case 10A has an opening on the viewer's side and is provided on the viewer's side of main case 31. Bezel case 10A supports crystal 10C. Bezel case 10A can be made of a translucent material such as sapphire glass, and the cross section taken along line BB in FIG. 4 may have a shape similar to that shown in FIG. 2. Furthermore, bezel case 10A may have a mirrored portion 10M that exhibits a mirror effect and a non-mirror portion P that does not reflect light like a mirror, similar to the name tag 30A described above.

[0035] The dial 10B covers and protects the movement. The dial 10B may have a mirrored portion 10M that exhibits a mirror effect and a non-mirror portion P that does not reflect light like a mirror, similar to the name tag 30A described above.

[0036] The dial 10B shown in Figure 4 shows, as an example, a design P1 generated from a photograph or the like as the non-mirror-finished portion P, and letters P2. In addition to designs related to pets or the like, the design P1 and letters P2 can also be selected to represent company emblems, product brand names, product photos, letters commemorating the establishment or sale of the product, etc. Therefore, if sapphire glass is used for the decorative part 1, it is scratch-resistant and can visibly express a sense of luxury and rarity, making it suitable for manufacturing decorative items 30 that serve as symbols of status, such as novelties for luxury car owners or idol promotional goods.

[0037] (Medal) Fig. 5 is a diagram showing a medal 30C, which is an example of an ornament 30. As shown in Fig. 5, the medal 30C comprises a medal main body M and an ornament component 1. The medal may also comprise a casing C as an ornament component 1 that covers the medal main body M and the ornament component 1. The medal main body M may also comprise a nameplate (shown as a main body 10 in Fig. 5) as an ornament component 1 that is placed on the observer side.

[0038] The nameplate body 10 and casing C, particularly the cover C1 that covers the medal body M from the observer side, can be made of a light-transmitting material such as sapphire glass, and the cross section taken along line CC in Fig. 5 may have a shape similar to that shown in Fig. 2. Furthermore, the nameplate body 10 and casing C may have a mirrored portion 10M that exhibits a mirror effect and a non-mirror portion P that does not reflect light like a mirror, similar to the name tag 30A described above.

[0039] The main body 10 and casing C of the nameplate shown in Fig. 5 are provided with a design P1 generated from a photograph or the like and letters P2 as examples of the non-mirror portion P. The design P1 and letters P2 may represent, for example, gold, silver, and bronze medals awarded to winners of international sporting events.

[0040] In this case, gold can be selected for a gold medal, silver for a silver medal, or copper for a bronze medal as the metal to be vapor-deposited, depending on the metal used in the medal body M. Therefore, the decorative component 1 can have a more strikingly beautiful appearance than conventional medals, further increasing the satisfaction of those who receive the medal.

[0041] Therefore, if sapphire glass is used for the decorative part 1, it will be scratch-resistant and will maintain its beauty even if a medalist bites it with all their might. It is also suitable for producing medals awarded to winners of international competitions, as it can visibly express a sense of luxury and rarity and further motivate athletes to win.

[0042] (Commemorative frame) Fig. 6 is a diagram showing a commemorative frame 30D, which is an example of an ornament 30. As shown in Fig. 6, the commemorative frame 30D comprises a holder part H1 as an ornament part 1 having a space for accommodating a commemorative coin K, and a back holder part H2 as an ornament part 1 that covers the commemorative coin K together with the holder part H1.

[0043] The holder part H1 and the rear holder part H2 can be made of a light-transmitting material such as sapphire glass, and the cross section taken along line DD in Fig. 6 may have a shape similar to that shown in Fig. 2. Furthermore, the holder part H1 and the rear holder part H2 may have a mirror part 10M that exhibits a mirror effect and a non-mirror part P that does not reflect light like a mirror, similar to the name tag 30A described above.

[0044] The holder part H1 and the back holder part H2 shown in Figure 6 have, as an example, a design created from a photograph or the like as the non-mirror part P. The design can be, for example, a design celebrating the enthronement or marriage of an Imperial family member. It is also possible to fit a watch into the holder part H1, or to fit a photograph or the like so that it can be interchangeably displayed.

[0045] Therefore, the decorative component 1 can be made to have a more strikingly beautiful appearance than conventional frames, and can provide even greater satisfaction to purchasers of the commemorative coin K. Furthermore, if sapphire glass is used for the decorative component 1, it will be scratch-resistant and will be able to maintain its beauty for many years.

[0046] (Other decorations) The decorative component 1 of this embodiment is suitable for the decorative item 30 described above as well as general decorative items 30 that convey a sense of luxury and rarity, such as trophies, luxury automobile emblems, company or residential nameplates, and other commemorative items.

[0047] As described above, the decorative part 1 of this embodiment comprises a translucent material having a non-mirror portion P formed on the first surface, namely the surface 10S, and a metal thin film layer 12 that covers the non-mirror portion P and the other portions of the first surface so that the other portions exhibit a mirror effect when observed through the decorative surface 10R, namely the second surface opposite the first surface.

[0048] Therefore, it is possible to provide decorative components and decorative articles with a more luxurious feel.

[0049] The decorative component 1 may have not only the non-mirror-finished portion P and the mirror-finished portion 10M, which is the portion other than the non-mirror-finished portion P, but also additional decorative portions, which are decorative portions other than these. These additional decorative portions include, for example, portions printed with ink, colored but transparent portions, and uncolored transparent portions through which the color of the translucent material is visible. [Explanation of symbols]

[0050] 1. Decorative parts 2 Casing 10 Main body 10A Bezel Case 10B Dial 10C Windshield 10G Gradation section 10M Mirror surface part 10R decorative surface 10S surface 11 Photosensitive layer 12 Metal thin film layer 30 Decorations 30A Name Tag 30B watch 30C Medal 30D Commemorative Frame 31 Main unit case C1 Cover H1 holder part H2 Rear holder P Non-specular area P1 design P2 character C casing K commemorative coin M Medal body

Claims

[Claim 1] a light-receiving layer forming step of forming a light-receiving layer made of metal or pigment ink, which is opaque to laser light, on a mirror surface portion of the light-transmitting material formed of sapphire glass, which creates a mirror effect; a non-mirror portion forming step of irradiating the light-receiving layer on the surface with a laser beam to form a non-mirror portion that does not produce a mirror effect but allows the color of the underlying layer to appear opaque; a light-receiving layer removing step of removing the light-receiving layer; a metal thin film layer forming step of forming a metal thin film layer by vapor-depositing a colored metal on the mirror surface portion and the non-mirror surface portion of the surface; A method for manufacturing decorative parts, comprising:

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