JP2008151550A - Clock dial and clock - Google Patents

Abstract

An object of the present invention is to provide a timepiece dial having excellent light transmission and an aesthetic appearance, and to provide a timepiece having the timepiece dial.
A timepiece dial plate is formed by laminating a plurality of plate-like members including a substrate made of a light-transmitting material and a reflection film having openings in a predetermined pattern. It has the structure which was made. Moreover, it is preferable that the spacer 3 is arranged between the adjacent plate-like members 2. In addition, it is preferable that the reflective films 22 have different opening arrangement patterns. Moreover, it is preferable that the reflective films 22 have different colors.
[Selection] Figure 1

Description

  The present invention relates to a timepiece dial and a timepiece.

The timepiece dial is required to have a function as a practical product and a decorative property (aesthetic appearance) as a decorative product. In particular, in solar timepieces equipped with solar cells, when solar cells (solar cells) are placed under the dial (solar watch dial), the dial has excellent light transmissivity and other decorative items. Decorative properties (aesthetic appearance) are required.
Specifically, the dial for a solar timepiece provides a sufficient amount of light for driving the timepiece through a solar cell disposed below the solar dial, while providing a decorative item. Decorative properties are also required.

Conventionally, in a solar timepiece, in order to make a sufficient amount of light incident on the solar cell, the solar cell itself is used as a dial plate, and a colored member (particularly a dark member) is not arranged on the solar cell. The shape of the dial is designed, and a color similar to the self-color (usually black to purple) of the solar cell has been used as the dial.
However, in recent years, there is a strong demand for adopting dials of various tones in solar timepieces according to timepiece specifications and the like.

  As a timepiece dial for a solar timepiece that attempts to prevent the solar cell from being seen through the dial, ceramic is the main constituent material (see Patent Document 1). The dial plate is expensive and has a problem in strength, such as being easily broken when subjected to an impact caused by dropping or the like. Even in such a configuration, it has been difficult to make the appearance of the dial sufficiently excellent.

There is also an attempt to provide a metal layer made of a metal material and having a small hole for transmitting light on one surface of a plastic substrate (see Patent Document 2). However, in order to take in a sufficient amount of external light, by increasing the size of each small hole or increasing the number of small holes sufficiently, etc. It is necessary to increase the total area (sum of the plurality of small hole areas). In such a case, small holes are conspicuous in the appearance of the dial for solar timepiece, and the dial for solar timepiece is inferior in aesthetics (aesthetic appearance). Also, for the purpose of improving the aesthetic appearance of the dial for solar timepieces, if the size of each small hole is reduced or the number of small holes is reduced, a sufficient amount of external light can be transmitted. Becomes difficult.
Thus, conventionally, it has been difficult to obtain a dial for a solar timepiece that has both excellent decorativeness (aesthetic appearance) and excellent light transmission.

Japanese Patent Laid-Open No. 10-39048 JP 11-326549 A

  An object of the present invention is to provide a timepiece dial having excellent light transmission and an aesthetic appearance, and to provide a timepiece having the timepiece dial.

Such an object is achieved by the present invention described below.
The timepiece dial of the present invention has a structure in which a plurality of plate-like members each including a substrate made of a light-transmitting material and a reflective film having openings in a predetermined pattern are stacked. It is characterized by that.
As a result, it is possible to provide a timepiece dial having excellent light transmission and an aesthetic appearance.

In the timepiece dial of the present invention, it is preferable that a spacer is disposed between the adjacent plate-like members.
Thereby, distance can be made uniform between plate-shaped members, and the aesthetic appearance as the timepiece dial whole can be made especially excellent. In addition, the thickness of the dial can be controlled more reliably.

In the timepiece dial according to the aspect of the invention, it is preferable that the reflective films have different opening arrangement patterns.
Thereby, various patterns and colors can be created by overlapping a plurality of reflective films, and more effective three-dimensional expression is possible. Moreover, those changes can be made depending on the viewing angle. As a result, design variations can be expanded. As a result, a timepiece dial having particularly excellent decorativeness (aesthetic appearance) can be manufactured.

In the timepiece dial of the present invention, it is preferable that the reflective films have different colors.
Thereby, various patterns and colors can be created by overlapping a plurality of reflective films, and more effective three-dimensional expression is possible. Moreover, those changes can be made depending on the viewing angle. As a result, design variations can be expanded. As a result, a timepiece dial having particularly excellent decorativeness (aesthetic appearance) can be manufactured.

In the timepiece dial of the present invention, it is preferable that the aperture ratio of the plurality of plate-like members constituting the timepiece dial when the reflective film is viewed in plan is 10 to 90%. .
Thereby, both the light transmittance and the aesthetic appearance are particularly excellent.
In the timepiece dial according to the present invention, it is preferable that the number of stacked plate-like members in the timepiece dial is 3 to 10.
Thereby, both the light transmittance and the aesthetic appearance are particularly excellent.

In the timepiece dial of the present invention, it is preferable that the aperture ratio when the timepiece dial is viewed in plan is 10 to 90%.
Thereby, both the light transmittance and the aesthetic appearance are particularly excellent.
In the timepiece dial according to the aspect of the invention, it is preferable that the plate-like member is provided with the reflective film provided on the main surfaces on both sides of the substrate.
Thereby, the aesthetic appearance of the timepiece dial can be further improved while the thickness of the entire timepiece dial is relatively thin.

In the timepiece dial of the present invention, it is preferable that the plate-like member has a coating layer that covers the reflective film provided on the substrate.
Thereby, for example, the adhesion between adjacent plate-like members can be made particularly excellent, and peeling between plate-like members due to physical impact or the like can be more effectively prevented. In addition, the thickness of the timepiece dial can be controlled more reliably. In addition, the aesthetic appearance of the timepiece dial can be further improved.

The timepiece of the present invention includes the timepiece dial of the present invention.
Thereby, it is possible to provide a timepiece having excellent light transmittance to the inside and excellent aesthetic appearance. In addition, it is possible to provide a timepiece (for example, a radio timepiece, a solar timepiece, a solar timepiece, etc.) that can effectively use electromagnetic waves (light, radio waves) from the outside, for example, for power generation by a solar cell. .

  An object of the present invention is to provide a timepiece dial having excellent light transmission and an aesthetic appearance, and to provide a timepiece having the timepiece dial. In particular, the timepiece dial and the timepiece character capable of expressing dynamic beauty and effective three-dimensional expression in which the color and pattern of the timepiece dial changes according to the movement of the timepiece dial, etc. A clock provided with a plate can be provided.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.
First, a preferred embodiment of a timepiece dial and a timepiece dial manufacturing method of the present invention will be described.
<First Embodiment (Timepiece Dial)>
FIG. 1 is a cross-sectional view showing a first embodiment of the timepiece dial of the present invention, and FIG. 2 is an exploded perspective view showing an example of an arrangement pattern of real parts (fine convex parts) provided in the reflective film. In the following description, it is assumed that the upper side in FIGS. 1 and 2 is the observer side when the timepiece dial is used, and the main surface on the observer side of the timepiece dial (the side on which external light is incident). (Surface) will be described as the first surface, and the main surface on the opposite side will be described as the second surface (the same applies to FIG. 3 described later). Further, in the following description, a case where the timepiece dial 1 is applied to a timepiece (solar timepiece) 100 described later will be mainly described. Note that the drawings referred to in this specification show part of the configuration in an emphasized manner, and do not accurately reflect actual dimensions and the like.

As shown in FIG. 1, the timepiece dial 1 has a plurality of stacked plate-like members 2. More specifically, the timepiece dial 1 includes a plate-like member (first plate-like member) 2 ′, a plate-like member (second plate-like member) 2 ″, and a plate-like member (third plate). Plate-like member) 2 '''.
Each plate-like member 2 constituting the timepiece dial plate includes a substrate 21 made of a light-transmitting material and a reflective film 22 having a function of reflecting light. That is, the plate-shaped member 2 ′ includes a substrate 21 ′ and a reflective film 22 ′, and the plate-shaped member 2 ″ includes a substrate 21 ″ and a reflective film 22 ″. The member 2 ′ ″ includes a substrate 21 ′ ″ and a reflective film 22 ′ ″.

As described above, since the plate-like member 2 including the substrate 21 and the reflective film 22 has a structure in which a plurality of layers are stacked, a part of the light (external light) incident on the timepiece dial 1 is converted into a plurality of pieces. Of the reflective film
While reflecting on the surface (first surface side surface) of the reflective film 22 (reflective film 22 ') provided on the outermost surface side (first surface side) of the timepiece dial 1, the substrate 21 (substrate 21 ′) can be repeatedly reflected by the reflection films 22 provided on both sides of the substrate 21, and part of the light (external light) that has entered the substrate 21 (substrate 21 ′). Can be guided to the light incident side (observer side), and another part can be guided to the opposite side (side opposite to the light incident side). Thereby, both the light transmittance and aesthetic appearance of the timepiece dial 1 as a whole can be made excellent. In particular, the light that has entered the inside of the substrate 21 is repeatedly reflected by a plurality of reflecting films 22 (reflecting films 22 ′, reflecting films 22 ″, reflecting films 22 ′ ″), so that an observer can use it for a watch. The light transmittance of the timepiece dial 1 as a whole can be made excellent while reliably preventing the back side (second surface side) of the dial 1 from being visually recognized. Further, by having a large number of reflection films 22 instead of only one layer, for example, dynamic beauty expression in which the color or pattern of the timepiece dial 1 changes according to the movement of the timepiece dial 1 or the like. And effective three-dimensional expression. For this reason, it is possible to obtain an excellent aesthetic appearance with a high-class feeling that has been difficult to express in the past while making the light transmittance sufficiently excellent.

[Plate-shaped member]
As described above, the timepiece dial 1 is formed by laminating a plurality of plate-like members 2.
In the configuration shown in the figure, the timepiece dial 1 has three plate-like members 2 (plate-like member 2 ′, plate-like member 2 ″, plate-like member 2 ′ ″). The number of stacked members 2 is not limited to this.

The number of laminated plate-like members 2 in the timepiece dial 1 is not particularly limited, but is preferably 3 to 10, and more preferably 3 to 7. When the number of laminated plate-like members 2 is a value within the above range, both light transmittance and aesthetic appearance are particularly excellent. Moreover, at the time of manufacture, the timepiece dial 1 can be manufactured with high productivity.
The plurality of plate-like members 2 constituting the timepiece dial 1 may have the same configuration, or may have different configurations. For example, in at least two of the plurality of plate-like members 2 constituting the timepiece dial 1, the configuration of the substrate 21 may be different from that of the reflective film 22.
Hereinafter, the substrate 21 and the reflective film 22 constituting the plate-like member 2 will be described in detail.

(substrate)
The board | substrate 21 is comprised with the material which has a light transmittance.
As the constituent material of the substrate 21, for example, various plastics, various glasses, various ceramics, and the like can be used. The substrate 21 is preferably composed of plastic (particularly, heat-resistant plastic). Thereby, for example, it is possible to provide a timepiece dial 1 that is generally relatively light and easy to carry. For example, it can be formed into a desired shape relatively easily. Moreover, since it is a non-metallic material, it can be suitably applied to a radio timepiece dial.

  Examples of the plastic material constituting the substrate 21 include various thermoplastic resins, various thermosetting resins, and the like, such as polyethylene, polypropylene, ethylene-propylene copolymer, and ethylene-vinyl acetate copolymer (EVA). Polyolefin, cyclic polyolefin, modified polyolefin, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide (example: nylon 6, nylon 46, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12, nylon 6-12, nylon 6) -66), polyimide, polyamideimide, polycarbonate (PC), poly- (4-methylpentene-1), ionomer, acrylic resin, polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS resin) , Acrylonitrile-styrene copolymer (AS resin), butadiene-styrene copolymer, polyoxymethylene, polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyethylene terephthalate (PET), polybutylene terephthalate ( Polyesters such as PBT) and polycyclohexane terephthalate (PCT), polyethers, polyether ketones (PEK), polyether ether ketones (PEEK), polyether imides, polyacetals (POM), polyphenylene oxides, modified polyphenylene oxides, polysulfones, polys. Ether sulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, polyvinylidene fluoride Other thermoplastic resins such as fluorinated resins, styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, transpolyisoprene, fluororubber, chlorinated polyethylene, and epoxy Resin, phenol resin, urea resin, melamine resin, unsaturated polyester, silicone resin, urethane resin, poly-para-xylylene, poly-monochloro-para-xylylene, Polypara-poly-para-xylylene, poly-monofluoro-para-xylylene, poly-monoethyl-para-xylylene, etc. Xylylene resins, etc., or copolymers, blends, polymer Etc., and singly or in combination of two or more of these (e.g., a blend resin, polymer alloy, as a laminate or the like) can be used. In particular, the substrate 21 is preferably mainly composed of polycarbonate and / or acrylonitrile-butadiene-styrene copolymer. Thereby, for example, the adhesion to the reflection film 22 described later can be made particularly excellent. Further, the strength of the timepiece dial 1 as a whole can be made particularly excellent, and the degree of freedom of molding at the time of manufacturing the timepiece dial 1 (substrate 21) is increased (easiness of molding is improved). To do). In addition, the reflective film 22 can be suitably formed on the surface of the substrate 21 when the timepiece dial 1 is manufactured.

  The substrate 21 may have a substantially uniform composition at each site, or may have a different composition depending on the site. For example, the substrate 21 may have a base and a coat layer provided on the base for the purpose of coloring or the like. In such a case, the coat layer may be formed by, for example, various coating methods, printing methods, wet plating methods, dry plating methods, and the like.

Further, the shape and size of the substrate 21 are not particularly limited, and are usually determined based on the shape and size of the timepiece dial 1. In the illustrated configuration, the substrate 21 (the timepiece dial 1) has a flat plate shape, but may have a curved plate shape, for example.
The color of the substrate 21 is not particularly limited as long as it has optical transparency (transparency for light having a wavelength that can be used for driving and storing the solar cell 9). When the substrate 21 is white, the aesthetic appearance of the timepiece dial plate 1 (particularly the aesthetic appearance when applied to the timepiece 100) can be made particularly excellent. Can be provided with a superior luxury feeling. Further, when the substrate 21 is substantially transparent (more specifically, the light transmittance in the visible light region is 90% or more), the light transmittance as the timepiece dial 1 is further increased. The power generation efficiency of the solar cell 9 can be made particularly excellent in a timepiece (solar timepiece) 100 described later.

  Although the average thickness of the board | substrate 21 is not specifically limited, It is preferable that it is 50-1000 micrometers, and it is more preferable that it is 80-500 micrometers. When the average thickness of the substrate 21 is within the above range, the timepiece dial 1 can be applied to a timepiece 100 as will be described later while the light transmission of the timepiece dial 1 is sufficiently high. Thus, it is possible to more reliably prevent the color of the solar cell 9 from being seen through, and the decorativeness (aesthetic appearance) can be made particularly excellent.

(Reflective film)
The reflective film 22 has openings 222 arranged in a predetermined pattern, and a portion other than the openings 222 of the reflective film 22 is a real part 221. The real part 221 is made of a material having a function of reflecting light.
As described above, since the reflective film 22 has a real part and an opening, a part of light (external light) incident from the first surface side is reflected on the surface of the real part 221, and Another part of the light (external light) can be incident on the substrate 21. Then, the light that has entered the inside of the substrate 21 (for example, the substrate 21 ′) is reflected on the reflection films 22 (for example, the reflection film 22 ′ and the reflection film 22 ′) provided on both sides of the substrate 21 (for example, the substrate 21 ′). ') Can be repeatedly reflected, and part of the light (external light) that has entered the inside of the substrate 21 is guided to the light incident side (observer side) while the other part is directed to the opposite side (light To the side opposite to the incident side). As a result, both the light transmission and the aesthetic appearance of the timepiece dial 1 as a whole can be made excellent. In particular, such repeated light reflection is performed between the reflective films provided on both sides of each substrate 21 (substrate 21 ′, substrate 21 ″, substrate 21 ′ ″). The mode of light guided to the (observer side) becomes more complicated, and reliably prevents the viewer from seeing the state of the back side (second surface side) of the timepiece dial 1. The aesthetic appearance of the timepiece dial 1 as a whole can be made particularly excellent.

As described above, the reflective film 22 (real part 221) is made of a material having a function of reflecting light (hereinafter also referred to as “light reflecting material”). Examples of such materials include metal materials (including alloys), metal oxides, and the like.
The metal material generally has a metallic luster and is excellent in the function of reflecting light (visible light). As a result, the timepiece dial 1 has a metallic luster, overflows with a high-class feeling, and is particularly excellent in decorativeness (aesthetic appearance).

  Examples of the metal material include Fe, Cu, Zn, Ni, Mg, Cr, Mn, Mo, Nb, Al, V, Zr, Sn, Au, Pd, Pt, Ag, Hf, Co, In, W, and Ti. , Rh, and alloys containing at least one of these, particularly, materials (including alloys) containing at least one selected from Ag, Cr, Au, Al, Ti, Sn, and In. It is preferred that it is constructed. Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent. Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent.

In addition, although metal oxides generally have a lower function of reflecting light than various metal materials, they exhibit a sufficiently glossy appearance while giving a calm impression. Therefore, when the reflective film 22 is made of a metal oxide, the decorativeness (aesthetic appearance) of the timepiece dial 1 is particularly excellent.
As the metal oxide, oxides of various metals can be used. Specifically, Fe, Cu, Zn, Ni, Mg, Cr, Mn, Mo, Nb, Al, V, Zr, Sn, Au, Pd, Pt, Ag, Hf, Co, In, W, Ti, and Rh oxides (including complex oxides) can be given. In particular, the metal oxide preferably contains at least one selected from ZnO, Al ₂ O ₃ , and ITO (Indium Tin Oxide). Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent.

  Further, the reflective film 22 may contain a colorant as a component other than the light reflecting material as described above. When the reflective film 22 is made of a material containing a colorant, it is possible to express a color tone that is difficult to express only with the metal material, metal oxide, and the like as described above. Further, by using a colorant as the constituent material of the reflective film 22, the color tone of the reflective film 22 can be easily made different at each part (multicolor design can be applied), and the timepiece dial 1 The variation of design is expanded. As a result, the decorativeness (aesthetic appearance) of the timepiece dial 1 can be made particularly excellent.

As the colorant, for example, a dye or a pigment can be used. Among these, the pigment has excellent light resistance, and is particularly advantageous for maintaining an excellent appearance stably over a long period of time.
Examples of the pigment include inorganic pigments and organic pigments. Specific examples of the pigment include C.I. I. Pigment White 1, 4, 5, 6, 7, 11, 18, 19, 20, 21, 22, 23, 24, 26, 27, 28; C.I. I. Pigment Yellow 34, 35, 35: 1, 37, 37: 1, 42, 43, 53, 157, 162, 180; I. Pigment orange 20, 20: 1, 104; I. Pigment Red 101, 102, 105, 106, 108, 108: 1, 184; I. Pigment Brown 7, 11, 33; I. Pigment Green 15, 17, 18, 19, 26, 50; C.I. I. Pigment Blue 5: 1, 27, 28, 29, 35, 36; C.I. I. Pigment violet 14, 16; C.I. I. Pigment black 6,7,8,9,10,11,26,27,28; C.I. I. Inorganic pigments such as CI pigment metal 1, 2, 4, 5, 6; I. Pigment Yellow 1, 3, 12, 13, 14, 17, 55, 73, 74, 81, 83, 93, 94, 95, 97, 108, 109, 110, 129, 138, 139, 151, 153, 154 168; C.I. I. Pigment Orange 5, 13, 16, 36, 43; I. Pigment Red 2, 3, 5, 17, 22, 23, 38, 81, 48: 1, 48: 2, 48: 3, 48: 4, 49: 1, 52: 1, 53: 1, 57: 1 63: 1, 112, 122, 144, 146, 149, 166, 170, 176, 177, 178, 179, 185, 202, 207, 209, 254; I. Pigment brown 25; C.I. I. Pigment Green 7, 36; C.I. I. Pigment Blue 1,15,15: 1,15: 2,15: 3,15: 4,15: 6,17: 1,18,60; I. And organic pigments such as CI Pigment Violet 1, 3, 19, 23, and 50.

  Examples of the dye that can be used include acid dyes, basic dyes, direct dyes, reactive dyes, disperse dyes, food colorings, and the like. Specific examples of the dye include C.I. I. Acid Black 2, 7, 16, 17, 24, 26, 28, 31, 41, 52, 63, 94, 112, 118, 119; I. Acid Yellow 4, 11, 12, 13, 14, 17, 18, 23, 25, 29, 34, 40, 41, 42, 53, 55, 61, 71, 76, 111, 122; I. Acid Red 1, 4, 6, 8, 9, 15, 19, 21, 30, 32, 34, 35, 37, 40, 42, 51, 52, 54, 80, 82, 85, 87, 92, 94, 106, 108, 110, 115, 119, 133, 143, 172, 176, 180, 187, 256, 317; I. Acid Blue 7, 9, 15, 22, 23, 25, 40, 41, 43, 45, 49, 51, 53, 55, 56, 59, 62, 78, 80, 81, 90, 93, 102, 104, 111, 113, 117, 120, 124, 145, 167, 185, 192, 229, 234, 254; I. Acid Orange 7, 19; C.I. I. Acid Violet 49; C.I. I. B. Basic Black 2, 8; I. Basic yellow 2, 12, 32; I. Basic Red 1, 2, 9, 12, 13, 14, 37; I. Basic blue 1, 3, 5, 7, 9, 24, 25, 26, 28, 29; I. B. Basic violet 7, 14, 27; I. C. Basic Green 4, 6; I. Direct Black 2, 9, 11, 14, 17, 19, 22, 27, 32, 36, 38, 41, 48, 49, 51, 56, 71, 75, 77, 78, 80, 106, 108, 146 154; C.I. I. Direct Yellow 1, 2, 4, 8, 12, 24, 26, 33, 34, 41, 42, 48, 50, 51, 72, 87, 98; I. Direct Red 1, 4, 8, 11, 15, 17, 23, 28, 31, 46, 59, 62, 73, 75, 77, 80, 81, 83, 84, 85, 90, 101, 106, 108, 110, 145, 189, 193, 225; I. Direct Blue 1, 2, 6, 8, 22, 25, 34, 69, 70, 71, 72, 75, 76, 78, 81, 82, 83, 86, 90, 98, 106, 110, 120, 165 195, 199, 218, 239, 258; C.I. I. Direct orange 34, 39, 44, 46, 60; I. Direct violet 47, 48; C.I. I. Direct Brown 109; C.I. I. Direct Green 6,59; C.I. I. Food black 1, 2; C.I. I. Food yellow 2, 4, 5; C.I. I. Food Red 2, 3, 7, 14, 52, 87, 94, 105; C.I. I. Food blue 1, 2; C.I. I. Reactive Black 1, 4, 5, 8, 14, 21, 23, 26, 31, 32, 34; I. Reactive Blue 2,3,4,5,7,8,10,13,14,15,17,18,19,21,25,26,27,28,29,38,39,40,42,43 49, 51, 52, 65, 66, 67, 68, 71, 73, 74, 75, 77, 78, 79, 80, 89, 98, 100, 101, 104, 105, 112, 113, 114, 115 , 119, 147, 148, 158, 160, 162, 169, 170, 171, 179, 182, 187; I. Reactive Red 3, 6, 13, 17, 19, 21, 22, 23, 24, 29, 35, 37, 40, 41, 43, 45, 49, 55, 56, 58, 63, 67, 80, 81 , 82, 85, 86, 87, 104, 106, 108, 109, 110, 111, 112, 113, 114, 117, 118, 119, 120, 123, 124, 126, 128, 130, 131, 132, 141 , 147, 158, 159, 170, 171, 174, 176; I. Reactive Yellow 2, 3, 13, 14, 15, 17, 18, 23, 24, 25, 26, 27, 29, 35, 37, 41, 42, 49, 50, 52, 54, 55, 57, 58 63, 64, 75, 76, 77, 79, 81, 82, 83, 84, 85, 87, 88, 91, 92, 93, 95, 96, 111, 115, 116, 131, 135; I. Reactive Orange 1, 2, 5, 7, 10, 11, 12, 13, 15, 16, 20, 30, 34, 35, 41, 42, 44, 45, 46, 56, 57, 62, 63, 64 67, 69, 71, 72, 73, 74, 78, 82, 84, 87; I. Reactive violet 1, 2, 3, 4, 5, 6, 7, 8, 9, 16, 17, 22, 23, 24, 26, 27, 33; C.I. I. Reactive Brown 1, 2, 5, 6, 7, 8, 9, 16, 17, 18, 19, 21, 24, 26, 30; I. Disperse black 1, 3, 10, 24; C.I. I. Disperse Blue 3, 7, 9, 14, 16, 19, 20, 26, 27, 35, 43, 44, 54, 55, 56, 58, 60, 62, 64, 70, 72, 73, 75, 79 81, 82, 83, 87, 91, 93, 94, 95, 96, 102, 106, 108, 112, 113, 115, 118, 120, 122, 125, 128, 130, 139, 141, 142, 143 , 146,148,149,153,154,158,165,167,171,173,174,176,183,185,186,187,189,191,197,198,200,201,205,207,211 , 214, 224, 225, 257, 259, 267, 268, 270, 284, 285, 287, 288, 291, 293, 295, 297 301,315,330,333; C. I. Disperse Red 1, 4, 5, 7, 11, 12, 13, 15, 17, 27, 43, 44, 50, 52, 53, 54, 55, 56, 58, 59, 60, 65, 72, 73 74, 75, 76, 78, 81, 82, 86, 88, 90, 91, 92, 93, 96, 103, 105, 106, 107, 108, 110, 111, 113, 117, 118, 121, 122 , 126, 127, 128, 131, 132, 134, 135, 137, 143, 145, 146, 151, 152, 153, 154, 157, 159, 164, 167, 169, 177, 179, 181, 183, 184 , 185, 188, 189, 190, 191, 192, 200, 201, 202, 203, 205, 206, 207, 210, 221, 224, 225, 27,229,239,240,257,258,277,278,279,281,288,296,303,310,311,312,320,324,328; C. I. Disperse Yellow 3, 4, 5, 7, 9, 13, 24, 30, 33, 34, 42, 44, 49, 50, 51, 54, 56, 58, 60, 63, 64, 66, 68, 71 74, 76, 79, 82, 83, 85, 86, 88, 90, 91, 93, 98, 99, 100, 104, 114, 116, 118, 119, 122, 124, 126, 135, 140, 141 , 149, 160, 162, 163, 164, 165, 179, 180, 182, 183, 186, 192, 198, 199, 202, 204, 210, 211, 215, 216, 218, 224; I. Disperse Orange 1, 3, 5, 7, 11, 13, 17, 20, 21, 25, 29, 30, 31, 32, 33, 37, 38, 42, 43, 44, 45, 47, 48, 49 , 50, 53, 54, 55, 56, 57, 58, 59, 61, 66, 71, 73, 76, 78, 80, 89, 90, 91, 93, 96, 97, 119, 127, 130, 139 142; C.I. I. Disperse Brown 1, 2, 4, 9, 13, 19; I. Modern Red 30; C.I. I. Modern Blue 7 etc. are listed.

  Further, the plurality of real parts (fine convex parts) 221 constituting the reflective film 22 may all be made of the same material, or may be made of different materials. . Moreover, the arbitrary real part (fine convex part) 221 may have a uniform composition as a whole, or may have a different composition in each part. In particular, the reflective film 22 has a plurality of areas composed of a plurality of real parts (fine convex parts) 221 on the substrate 21, and the real part (fine convex part) 221 is configured in each area. The material may be different. By setting it as the above structures, the decorativeness of the timepiece dial 1 can further be improved. In particular, the texture (texture) can be enhanced, and furthermore, a photographic quality pattern by stippling can be expressed.

The real part 221 and the opening 222 included in the reflective film 22 may have any shape. For example, the reflective film 22 has a large number of openings 222 such as a substantially circular shape, a substantially elliptical shape, and a substantially polygonal shape when viewed in a plan view, and the other part is a real part 221. Alternatively, the shape in plan view may include a large number of real parts 221 such as a substantially circular shape, a substantially oval shape, and a substantially polygonal shape, and the other part may be the opening 222. Good.
In the configuration shown in the drawing, the reflective film 22 has a large number of real portions 221 as fine convex portions having a substantially circular shape when viewed in plan, and the other portions are openings 222. Such a reflective film 22 can be suitably formed by using a method as described later.

The arrangement pattern (arrangement pattern when viewed in plan) of the real part (fine convex part) 221 is not particularly limited and may be anything. As an example, if the decorative pattern is a geometric pattern, for example, it may be arranged in a square lattice pattern or in a staggered pattern. Moreover, the pattern in which a part of the repetitive pattern having a regular shape as described above is missing may be used. Moreover, other arbitrary patterns may be sufficient, for example, a radial pattern, a spiral pattern, etc. may be sufficient.
In addition, the plurality of real parts (fine convex parts) 221 constituting the reflective film 22 may have the same size and shape, or may have different sizes and shapes.

  In the plurality of reflection films 22 constituting the timepiece dial 1, the arrangement pattern and color of the real part 221 constituting each reflection film 22 (reflection film 22 ′, reflection film 22 ″, reflection film 22 ′ ″) are as follows. The reflection films 22 may be the same or different from each other. Thereby, by changing the viewing direction (angle), the pattern (pattern) can be changed or the colors can be seen differently. This expands design variations. As a result, the decorativeness (aesthetic appearance) of the timepiece dial 1 can be made particularly excellent.

  For example, in the example shown in FIG. 2, the reflective film 22 ′ has a large number of real parts 221 ′ arranged in a character pattern (here, “A” is shown as an example). In the reflective film 22 ″ and the reflective film 22 ′ ″, the real part 221 (real part 221 ″, real part 221 ′ ″) is replaced with the reflective film 22 (reflective film 22 ″, reflective film 22 ″. ') Is arranged in a staggered pattern over almost the entire surface, and the pitch of the real part 221 (real part 221' ', real part 221' '') is different from each other. That is, in the reflective film 22 ″, the real parts 221 ″ are arranged relatively sparsely, and in the reflective film 22 ″ ″, the real parts 221 ″ are arranged relatively densely.

  Further, the real part 221 ″ of the reflective film 22 ″ and the real part 221 ′ ″ of the reflective film 22 ′ ″ are arranged so that at least a part thereof overlaps when the timepiece dial is viewed in plan. It is preferable. Thereby, the reflective film 22 ″ and the reflective film 22 ′ ″ appear to sink into the second surface side (lower side in FIG. 1), and the reflective film 22 ′ is closer to the front side (upper side in FIG. 1). It will appear to rise. That is, the reflective film 22 ′ is visually recognized more three-dimensionally than the reflective film 22 ″ and the reflective film 22 ″ ″. Thereby, in the design of the timepiece dial 1, more effective three-dimensional expression is possible, the sense of quality is increased, a particularly excellent aesthetic appearance is obtained, and the degree of freedom of design is expanded.

  In addition, the gloss and color of the reflective film 22 ″ are added to the gloss and color of the reflective film 22 ″, so that the transparency of electromagnetic waves (radio waves and light) is sufficiently high and excellent decorative properties ( It is effective as a timepiece dial for a radio-controlled timepiece having an aesthetic appearance and a solar timepiece (a timepiece having a solar battery).

As described above, the timepiece dial 1 including the plurality of reflection films 22 can express colors and stereoscopic effects that cannot be expressed by only one reflection film.
The average height (average thickness) of the real part 221 represented by h in FIG. 1 is not particularly limited, but is preferably 0.005 to 1.5 μm, and is 0.007 to 0.9 μm. Is more preferable. When the average height of the real part 221 is a value within the above range, the internal stress of the reflective film 22 (real part 221) is sufficiently prevented and the aesthetic property of the timepiece dial 1 is particularly excellent. Can be. Further, the adhesion between the substrate 21 and the reflective film 22 can be made particularly excellent. Further, the transmittance of electromagnetic waves (radio waves and light) as the entire timepiece dial 1 can be made sufficiently large. On the other hand, if the average height of the real part 221 is less than the lower limit value, depending on the constituent material of the reflective film 22, it becomes difficult to fully exhibit the characteristics of the reflective film 22 such as gloss and tone, It may be difficult to sufficiently enhance the aesthetics of the timepiece dial 1 as a whole. In addition, depending on the constituent material of the reflection film 22 and the substrate 21, it may be difficult to sufficiently improve the adhesion between the substrate 21 and the reflection film 22. Moreover, when the average height of the real part 221 exceeds the upper limit value, the variation in the film thickness at each part of the reflective film 22 tends to increase. Further, when the average height of the real part 221 is particularly large, the internal stress becomes high, and the real part 221 may be easily peeled off. Further, when the average height of the real part 221 exceeds the upper limit value, the transmittance of electromagnetic waves (radio waves, light) as the whole timepiece dial 1 tends to decrease.

  Moreover, the average diameter of the real part 221 represented by d in FIG. 1 is not particularly limited, but is preferably 1 to 2000 μm, and more preferably 10 to 1000 μm. When the average diameter of the real part 221 is a value within the above range, the aesthetic appearance (esthetic) of the timepiece dial 1 is made sufficiently high in electromagnetic wave (radio wave, light) transmission as the timepiece dial 1. Property) can be made particularly excellent. On the other hand, if the average diameter of the real part 221 is less than the lower limit, it is difficult to make the appearance of the timepiece dial 1 sufficiently excellent depending on the constituent material, thickness, etc. of the reflective film 22. There is a possibility. On the other hand, when the average diameter of the real part 221 exceeds the upper limit, depending on the ratio of the area occupied by the real part 221, the transmittance of electromagnetic waves (radio waves, light) as the entire timepiece dial 1 may be sufficiently increased. It can be difficult.

  The pitch between the real parts (fine convex parts) 221 is not particularly limited, but is preferably 1 to 2000 μm, and more preferably 10 to 1000 μm. When the pitch between the real parts (fine convex parts) 221 is a value within the above range, the timepiece dial 1 is made sufficiently high in electromagnetic wave (radio wave, light) permeability as the timepiece dial 1. The aesthetic appearance (aesthetics) can be made particularly excellent. On the other hand, if the pitch between the real parts (fine convex parts) 221 is less than the lower limit value, depending on the ratio of the area occupied by the real parts (fine convex parts) 221, the electromagnetic wave ( It may be difficult to sufficiently increase the transmittance of radio waves and light. On the other hand, when the pitch between the real parts (fine convex parts) 221 exceeds the upper limit value, the appearance of the timepiece dial 1 is sufficiently excellent depending on the constituent material, thickness, etc. of the reflective film 22. Can be difficult.

  Further, the aperture ratio (aperture ratio in the effective region) when the reflective film 22 is viewed in plan is preferably 5 to 90%, and more preferably 10 to 80%. When the aperture ratio in the reflective film 22 is a value within the above range, the aesthetic appearance (esthetic) of the timepiece dial 1 is made sufficiently high in electromagnetic wave (radio wave, light) transmission as the timepiece dial 1. Property) can be made particularly excellent. On the other hand, if the aperture ratio is less than the lower limit, it may be difficult to sufficiently increase the transmittance of electromagnetic waves (radio waves, light) as the timepiece dial 1 as a whole. On the other hand, if the aperture ratio exceeds the upper limit, it may be difficult to make the appearance of the timepiece dial 1 sufficiently excellent depending on the constituent material, thickness, and the like of the reflective film 22.

[spacer]
Moreover, in the timepiece dial 1 of the present embodiment, as shown in FIG. 1, between the adjacent plate-like members 2 (between the plate-like member 2 ′ and the plate-like member 2 ″ and the plate-like member 2. The spacer 3 is arranged between the “-plate-like member 2 ′”. Thereby, the distance between plate-shaped members can be made uniform, and the aesthetic appearance of the timepiece dial as a whole can be made particularly excellent. Further, the thickness of the timepiece dial 1 can be controlled more reliably.

The shape of the spacer 3 is not particularly limited, but is preferably substantially spherical or substantially cylindrical. When the spacer 3 has such a shape, the diameter thereof is preferably 5 to 100 μm, and more preferably 10 to 50 μm.
The spacer 3 is preferably made of a material having substantially the same refractive index as that of the substrate 21. More specifically, the absolute value of the difference between the refractive index of the constituent material of the spacer 3 and the refractive index of the constituent material of the substrate 21 is preferably 0.10 or less, and preferably 0.05 or less. More preferred. Thus, when the timepiece dial 1 is viewed from the first surface side, the spacer 3 can be made less noticeable, and the decorativeness (aesthetic appearance) of the timepiece dial 1 is particularly excellent. It can be.

The timepiece dial 1 as described above preferably satisfies the following conditions.
That is, the aperture ratio (aperture ratio in the effective region) when the timepiece dial 1 is viewed in plan, that is, the aperture ratio of the timepiece dial 1 as a whole is preferably 0.1 to 50%. More preferably, it is 5 to 30%. When the aperture ratio of the timepiece dial 1 as a whole is a value within the above range, the timepiece dial 1 has a sufficiently high electromagnetic wave (radio wave, light) permeability as the timepiece dial 1. The aesthetic appearance (aesthetics) can be made particularly excellent. On the other hand, if the aperture ratio is less than the lower limit, it may be difficult to sufficiently increase the transmittance of electromagnetic waves (radio waves, light) as the timepiece dial 1 as a whole. On the other hand, if the aperture ratio exceeds the upper limit, it may be difficult to make the appearance of the timepiece dial 1 sufficiently excellent depending on the constituent material, thickness, and the like of the reflective film 22.

  The light transmittance of the timepiece dial 1 as a whole is not particularly limited, but is preferably 10 to 99%, and more preferably 15 to 90%. When the transmittance is a value within the above range, the aesthetic appearance (aesthetics) of the timepiece dial 1 can be made particularly excellent. On the other hand, when the transmittance is less than the lower limit, there is a possibility that a sufficient amount of light for power generation in the solar cell 9 may not be obtained when applied to a timepiece as described later. On the other hand, if the transmittance exceeds the upper limit, depending on the constituent material, thickness, etc. of the reflective film 22, it may be difficult to make the appearance of the timepiece dial 1 sufficiently excellent.

Although not shown in the drawing, a time scale, decorative characters, marks, and the like are provided on the outer surface (first surface) of the timepiece dial 1 (plate member 2 ′).
Moreover, since the timepiece dial 1 has a configuration in which a plurality of plate-like members 2 are laminated, for example, the number of laminated plate-like members 2 and the type of the plate-like members 2 to be laminated are changed. Thus, the timepiece dial 1 having various specifications can be efficiently produced. That is, the timepiece dial of the present invention is suitable for multi-item production.

[Manufacturing method of timepiece dial]
Next, the manufacturing method of the timepiece dial 1 described above will be described.
The timepiece dial 1 includes, for example, a substrate preparation step for preparing the substrate 21 and a liquid composition containing at least a part of the surface of the substrate 21 from the head portion due to the vibration of the piezoelectric element from the head portion. A reflective film forming step for obtaining a plate-like member 2 by forming a reflective film 22 having a large number of fine convex portions (real parts) 31 by discharging droplets of the object in a predetermined pattern; and a plurality of plate-like members 2 It can manufacture by the method which has a joining process joined via the spacer 3. FIG.

(Board preparation process)
First, the substrate 21 is prepared.
As the substrate 21, those described above can be used. Further, the surface of the substrate 21 may be subjected to surface processing such as mirror surface processing, streak processing, and satin processing. Thereby, it becomes possible to give a variation in the glossiness of the surface of the timepiece dial 1 to be obtained, and the decorativeness of the timepiece dial 1 to be obtained can be further improved. In addition, in the reflective film forming step described later, the affinity of the liquid composition droplet for the substrate 21 can be increased, and as a result, the droplet can be more reliably held at a target site on the substrate 21. In addition, the adhesion between the formed reflective film 22 and the substrate 21 can be made particularly excellent.

  Further, the timepiece dial 1 manufactured using the substrate 21 subjected to such surface processing has a reflective film 22 having a reflective film 22 that is obtained by performing the surface processing on the reflective film 22. The glare and the like are suppressed, and the aesthetic appearance is particularly excellent. In addition, when the substrate 21 is mainly composed of a plastic material, the surface processing as described above can be performed relatively easily. In addition, since the reflective film 22 is usually relatively thin, if the surface treatment is performed after the reflective film 22 is formed, it is difficult to suitably leave the reflective film 22 at the portion subjected to the surface treatment. However, such a problem can be effectively prevented by performing the surface treatment on the substrate 21.

  Further, the surface of the substrate 21 may be treated in a lyophilic manner with respect to the liquid composition containing the material constituting the reflective film 22 (lyophilic treatment). Examples of the lyophilic treatment include an atmospheric pressure plasma method, a UV treatment method, an organic thin film method (decane film, polyethylene film), and the like. By performing such a treatment, the wettability of the liquid droplets with respect to the surface of the substrate 21 is improved, and the liquid droplets can be more reliably held at a target portion on the substrate 21 and the formed reflections. The adhesion between the film 22 and the substrate 21 can be made particularly excellent.

(Reflective film formation process)
Next, the reflective film 22 is formed on the substrate 21. Thereby, the plate-like member 2 is obtained.
In the present embodiment, the reflective film 22 is formed by ejecting liquid composition droplets containing the constituent material of the reflective film 22 from the head portion in a predetermined pattern by the vibration of the piezoelectric element. By forming the reflection film 22 in this manner, the reflection film 22 (real part 221) having a fine pattern can be efficiently formed in a short time. In addition, various reflection films 22 can be easily manufactured by changing a droplet discharge program. That is, it can respond suitably also to multi-item production.

<Liquid composition>
The liquid composition includes at least a light reflecting material, but may include a liquid medium such as a solvent and a dispersion medium, a dispersant, a resin material, and the like as necessary. When the liquid composition contains a liquid medium, droplets can be smoothly discharged, and the real part 221 having a desired shape can be easily and reliably formed in a desired pattern. Moreover, the adhesiveness with respect to the board | substrate 21 of the reflecting film 22 formed as the liquid composition contains a resin material can be made especially excellent. Moreover, since the content rate in the liquid composition of the liquid medium finally removed by volatilization can be made low if the liquid composition contains a resin material, the cross-sectional shape as shown in FIG. The real part 221 can be easily and reliably formed.

In the liquid composition, the light reflecting material may be in any form, for example, it may be dissolved in a solvent or may be dispersed in a dispersion medium.
When the light reflecting / absorbing material is dispersed in a dispersion medium (when included as a dispersoid), the particle size (primary particle size) of the light reflecting material as the dispersoid is preferably 500 nm or less. Thereby, the dispersibility of the light reflecting material in the liquid composition is particularly excellent, and aggregation of the light reflecting material, a decrease in fluidity of the liquid composition, and the like can be effectively prevented. As a result, the fine pattern real part 221 can be more reliably formed.

  Although the content rate of the light reflection material in a liquid composition is not specifically limited, It is preferable that it is 0.1-90 wt%. If the content of the light reflecting material is less than the lower limit, it may be difficult to form the real part 221 having a sufficient thickness. On the other hand, when the content rate of the light reflecting material exceeds the upper limit, the fluidity of the liquid composition is lowered, and it may be difficult to smoothly discharge the droplets.

  Examples of the liquid medium include inorganic compounds such as water, carbon disulfide, and carbon tetrachloride, methyl ethyl ketone (MEK), acetone, diethyl ketone, methyl isobutyl teton (MIBK), methyl isopropyl ketone (MIPK), cyclohexanone, 3 -Ketone compounds such as heptanone, 4-heptanone, methanol, ethanol, n-propanol, isopropanol, n-butanol, i-butanol, t-butanol, 3-methyl-1-butanol, 1-pentanol, 2-pen Tanol, n-hexanol, cyclohexanol, 1-heptanol, 1-octanol, 2-octanol, 2-methoxyethanol, allyl alcohol, furfuryl alcohol, phenol, glycerin, dipropylene glycol, ethylene glycol, polyethylene glycol Alcohol compounds such as ethylene glycol, diethyl ether, dipropyl ether, diisopropyl ether, dibutyl ether, 1,2-dimethoxyethane (DME), 1,4-dioxane, tetrahydrofuran (THF), tetrahydropyran (THP), anisole, Diethylene glycol dimethyl ether (diglyme), 2-methoxyethanol, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, triethylene glycol Monochuchi Ether compounds such as ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene glycol monomethyl ether, cellosolve compounds such as methyl cellosolve, ethyl cellosolve, phenyl cellosolve, hexane, pentane, heptane, cyclohexane, methylcyclohexane , Octane, didecane, methylcyclohexene, isoprene and other aliphatic hydrocarbon compounds, toluene, xylene, benzene, ethylbenzene, naphthalene and other aromatic hydrocarbon compounds, pyridine, pyrazine, furan, pyrrole, thiophene, 2-methylpyridine Aromatic heterocyclic compounds such as 3-methylpyridine, 4-methylpyridine, furfuryl alcohol, N, N-dimethylformamide (DMF), N, Amide compounds such as N-dimethylacetamide (DMA), halogen compounds such as dichloromethane, chloroform, 1,2-dichloroethane, trichloroethylene, chlorobenzene, acetylacetone, ethyl acetate, methyl acetate, isopropyl acetate, isobutyl acetate, isopentyl acetate, chloroacetic acid Ester compounds such as ethyl, butyl chloroacetate, isobutyl chloroacetate, ethyl formate, isobutyl formate, ethyl acrylate, methyl methacrylate, ethyl benzoate, amine compounds such as trimethylamine, hexylamine, triethylamine, aniline, acrylonitrile, acetonitrile Nitrile compounds such as nitromethane, nitro compounds such as nitroethane, acetaldehyde, propionaldehyde, butyraldehyde, pentanal Organic compounds of aldehyde compounds such as acrylic aldehyde and the like, can be used a mixture of one or two or more selected from these.

  As the dispersant, those having an average weight molecular weight of 200 to 30,000 are preferable. Thereby, the dispersibility of the light reflecting / absorbing material as the dispersoid can be made particularly excellent. Moreover, as a dispersing agent, it is preferable that it is an organic compound which does not contain S, P, B, and a halogen atom. Suitable dispersants that satisfy these conditions include, for example, amine-based polymer dispersants such as polyethyleneimine and polyvinylpyrrolidone, carbonization having a carboxylic acid group in the molecule such as polyacrylic acid and carboxymethylcellulose. Hydrogen-based polymer dispersant, poval (polyvinyl alcohol), or a copolymer having a polyethyleneimine part and a polyethylene oxide part in one molecule (hereinafter referred to as “PEI-PO copolymer”) A molecular dispersant is mentioned. Moreover, it becomes easy to adjust the viscosity of a liquid composition to an optimal thing by including such a dispersing agent.

  Moreover, as a resin material which comprises a liquid composition, the material (plastic material) which was illustrated as a constituent material of the board | substrate 21 can be used. In particular, when a thermosetting resin is used, the real part 221 can be suitably formed by performing a heat treatment after discharging the droplets onto the substrate 2. As a result, it is possible to reliably prevent deformation caused by volatilization of the liquid medium from the droplets discharged onto the substrate 21, and the real part 221 having a cross-sectional shape as shown in FIG. Can be formed.

In addition, the liquid composition may contain components other than the materials described above. Examples of such components include a pH adjuster, a surface tension adjuster, a viscosity adjuster, an ultraviolet absorber, an antioxidant, a drying inhibitor, an evaporation accelerator, an antifoaming agent, an antifungal agent, an antiseptic, and an antifungal agent. Examples include rusting agents.
The pH adjuster is usually used for the purpose of adjusting the pH of the liquid composition, stabilizing the dispersibility and solubility. Specific examples of the pH adjuster include inorganic bases such as ammonia, lithium hydroxide, sodium hydroxide, potassium hydroxide, and ammonium hydroxide, salts of the inorganic bases, hydrochloric acid, sulfuric acid, phosphoric acid, boric acid, An inorganic acid such as carbonic acid or a salt of the inorganic acid (for example, a sulfate such as lithium sulfate, sodium sulfate, potassium sulfate, ammonium sulfate, lithium carbonate, sodium carbonate, sodium hydrogen carbonate, potassium carbonate, potassium hydrogen carbonate, potassium sodium carbonate, Carbonates such as ammonium carbonate, ammonium hydrogen carbonate, lithium phosphate, monosodium phosphate, disodium phosphate, trisodium phosphate, monopotassium phosphate, dipotassium phosphate, tripotassium phosphate, monoammonium phosphate, Phosphate such as diammonium phosphate and triammonium phosphate), Trieta Organic bases such as uramine, diethanolamine, N-methyldiethanolamine, dimethylethanolamine, salts of the organic base, acetic acid, propionic acid, trifluoroacetic acid, alkylsulfonic acid, citric acid, succinic acid, and other organic acids (for example, lithium acetate) And acetates such as sodium acetate, potassium acetate, and ammonium acetate). Moreover, a pH adjuster may contain at least 2 or more types among these, and may have a pH buffer action.

  Examples of the surface tension adjusting agent include surfactants such as a cationic surfactant, an anionic surfactant, a nonionic surfactant, and an amphoteric surfactant. Examples of the anionic surfactant include fatty acid salts, alkyl sulfate esters, alkylbenzene sulfonates, alkyl naphthalene sulfonates, dialkyl sulfosuccinates, alkyl phosphate ester salts, naphthalene sulfonate formalin condensates, polyoxyethylene Examples thereof include alkyl sulfate esters. Nonionic surfactants include, for example, polyoxyethylene alkyl ether, polyoxyethylene alkyl allyl ether, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkylamine, glycerin fatty acid ester, An oxyethylene oxypropylene block copolymer etc. are mentioned.

Examples of the viscosity modifier include water-soluble polymers such as celluloses and polyvinyl alcohol, and nonionic surfactants.
Examples of the ultraviolet absorber are described in JP-A-58-185679, JP-A-61-190537, JP-A-2-782, JP-A-5-97075, JP-A-9-34057, and the like. Benzotriazole compounds, benzophenone compounds described in JP-A No. 46-2784, JP-A No. 5-194843, US Pat. No. 3,214,463, etc., JP-B Nos. 48-30492 and 56-21141 Cinnamic acid compounds described in JP-A-10-88106, JP-A-4-298503, JP-A-8-53427, JP-A-8-239368, JP-A-10-182621, JP The triazine compounds described in JP-A-8-501291, Research Disclosure No. Compounds described in No. 24239, compounds that emit fluorescence by absorbing ultraviolet rays typified by stilbene-based and benzoxazole-based compounds, so-called fluorescent brighteners, can also be used.

  As the antioxidant, for example, various organic and metal complex anti-fading agents can be used. Examples of organic anti-fading agents include hydroquinones, alkoxyphenols, dialkoxyphenols, phenols, anilines, amines, indanes, chromans, alkoxyanilines, heterocycles, and the like. Examples of the complex include a nickel complex and a zinc complex.

By using an anti-drying agent (humectant), clogging due to the drying of the liquid composition at the discharge port of the head unit 5 can be effectively prevented. Examples of the drying inhibitor include urea derivatives such as 3-sulfolene, sorbitol, urea, 1,3-bis (β-hydroxyethyl) urea, and thiourea.
By using an evaporation accelerator, the quick drying property of the liquid composition can be improved. Examples of the evaporation accelerator include alkanolamines and alcohols.

Examples of antifoaming agents include fluorine-based, silicone-based compounds, and chelating agents represented by EDTA.
Examples of the antifungal agent include sodium dehydroacetate, sodium benzoate, sodium pyridinethione-1-oxide, p-hydroxybenzoic acid ethyl ester, 1,2-benzisothiazolin-3-one and salts thereof.

  Although the viscosity of such a liquid composition is not specifically limited, Usually, it is preferable that it is 1-20 mPa * s, and it is more preferable that it is 2-15 mPa * s. When the viscosity of the liquid composition is a value within the above range, it is possible to more stably discharge droplets from the head portion, and to form a real part 221 having a precise shape and a predetermined thickness. It can be formed more easily and reliably. In the present specification, unless otherwise specified, “viscosity” refers to a viscosity measured at 25 ° C. according to JIS Z8809.

Also, the amount (average) of one droplet is not particularly limited, but is usually preferably 0.1 to 40 pL, more preferably 1 to 30 pL. When the amount (average) of one droplet is within the above range, the real part 221 having a more precise shape and a predetermined thickness can be easily and reliably formed.
In this step, one real part 221 may be formed with a plurality of droplets. As a result, the lyophilicity and liquid repellency of the landing surface can be controlled, and the size and shape of the fine convex portion 221 can be reliably controlled.
In this step, after the droplet discharge as described above, a heat treatment such as heating or cooling, a decompression treatment, an irradiation treatment with light (energy rays) such as ultraviolet rays, or the like may be performed as necessary. Thereby, for example, the fluidity of the droplet applied on the substrate 21 can be quickly taken away, and the reflective film 22 can be formed efficiently.

(Joining process)
Next, the plurality of plate-like members 2 manufactured as described above are joined via the spacer 3. Thereby, the timepiece dial 1 is obtained.
This step can be performed, for example, by fusion bonding or pressure bonding.
The timepiece dial 1 has a configuration in which a plurality of plate-like members 2 are laminated. Therefore, for example, the timepiece dial 1 having various specifications can be efficiently produced by changing the number of laminated plate-like members 2 and the type of the laminated plate-like members 2. That is, the present invention is also suitable for multi-item production.

<Second Embodiment (Timepiece Dial)>
Next, a second embodiment of the timepiece dial and the timepiece dial manufacturing method of the present invention will be described.
FIG. 3 is a sectional view showing a second embodiment of the timepiece dial of the present invention.
Hereinafter, the timepiece dial and the timepiece dial manufacturing method of the present embodiment will be described with a focus on differences from the above-described embodiment, and the description of the same matters will be omitted.

  As shown in FIG. 5, in the timepiece dial 1 of the present embodiment, the plate-like member 2 includes a substrate 21 made of a light-transmitting material, a reflective film 22 having a function of reflecting light, On the surface side of the substrate 21 where the reflective film 22 is provided, a coating layer 23 is provided so as to cover the reflective film 22. In the timepiece dial 1 of the present embodiment, the plate-like member 2 is provided with the reflective film 22 on the main surface on both sides of the substrate 21. Further, in the timepiece dial 1 of the present embodiment, no spacer is provided between the adjacent plate-like members 2. That is, the timepiece dial of the present embodiment is the same as the above-described embodiment except that the configuration of the plate-like member is different from the above-described embodiment and does not have a spacer.

(Coat layer)
As described above, in the present embodiment, each plate-like member 2 (plate-like member 2 ′, plate-like member 2 ″, plate-like member 2 ′ ″) is a reflection film 22 (reflection film 22 ′, reflection film). 22 ″, the reflective film 22 ′ ″), and a coating layer 23 (a coating layer 23 ′, a coating layer 23 ″, a coating layer 23 ′ ″) provided to cover the reflective film 22 ″. By having such a coat layer 23, for example, the adhesion between adjacent plate-like members 2 can be made particularly excellent, and peeling between the plate-like members 2 due to physical impact or the like can be achieved. It can prevent more effectively. That is, the durability of the timepiece dial 1 can be made particularly excellent. Further, by having the coat layer 23, the distance between the adjacent reflective films 22 can be made uniform without using the spacer as described in the above-described embodiment, and the thickness of the timepiece dial 1 can be reduced. It can be controlled more reliably. Further, by having the coat layer 23, it is possible to adjust glossiness, color tone, etc. while sufficiently increasing the transmittance of electromagnetic waves (radio waves, light), and to further improve the aesthetic appearance of the timepiece dial 1. Can be In addition, the coating layer 23 improves various characteristics such as corrosion resistance, weather resistance, water resistance, oil resistance, scratch resistance, abrasion resistance, and discoloration resistance of the timepiece dial 1 as a whole. It is possible to prevent the reflection film 22 and the like from being deteriorated or modified due to the influence of the external environment. As a result, the durability of the timepiece dial 1 can be made particularly excellent.

  The coat layer 23 may be made of any material, but is preferably made of a material having appropriate transparency. Examples of such materials include various plastic materials (resin materials), various glasses, diamond-like carbon (DLC), etc. Among them, plastic has excellent transparency and excellent moldability (easy to mold). ) Is particularly preferable.

  Examples of the plastic material (resin material) constituting the coat layer 23 include various thermoplastic resins and various thermosetting resins. For example, polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer ( EVA) and other polyolefins, cyclic polyolefins, modified polyolefins, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamides (eg nylon 6, nylon 46, nylon 66, nylon 610, nylon 612, nylon 11, nylon 12, nylon 6- 12, nylon 6-66), polyimide, polyamideimide, polycarbonate (PC), poly- (4-methylpentene-1), ionomer, acrylic resin, polymethyl methacrylate, acrylonitrile-butadiene-styrene copolymer (ABS resin), acrylonitrile-styrene copolymer (AS resin), butadiene-styrene copolymer, polyoxymethylene, polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyethylene terephthalate (PET), Polybutylene terephthalate (PBT), Polycyclohexane terephthalate (PCT) and other polyesters, polyethers, polyetherketone (PEK), polyetheretherketone (PEEK), polyetherimide, polyacetal (POM), polyphenylene oxide, modified polyphenylene oxide , Polysulfone, polyethersulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, poly Various thermoplastics such as vinylidene fluoride, other fluororesins, styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, trans polyisoprene, fluororubber, chlorinated polyethylene Elastomer, epoxy resin, phenol resin, urea resin, melamine resin, unsaturated polyester, silicone resin, urethane resin, poly-para-xylylene, poly-monochloro-para- xylylene), poly-dichloro-para-xylylene, poly-monofluoro-para-xylylene, poly-monoethyl-para-xylylene, etc. Polyparaxylylene resins, etc., or copolymers and blends mainly containing these resins It includes polymer alloy or the like, singly or in combination of two or more of these (e.g., a blend resin, polymer alloy, as a laminate or the like) can be used.

The coat layer 23 is preferably made of a material containing a urethane-based resin and / or an acrylic resin, and is mainly made of a urethane-based resin and / or an acrylic resin. More preferably. Thereby, the adhesiveness of the coat layer 23 and the reflective film 22 can be made particularly excellent while the effect by having the coat layer 23 as described above is exhibited more remarkably.
The coat layer 23 may contain components other than the above materials. Examples of such components include colorants (including various color formers, fluorescent substances, phosphorescent substances, etc.), brighteners, plasticizers, antioxidants, fillers, and the like.

  The average thickness of the coat layer 23 is not particularly limited, but is preferably 0.01 to 50 μm, more preferably 0.1 to 20 μm, and further preferably 1 to 15 μm. When the average thickness of the coat layer 23 is within the above range, the adhesiveness between the coat layer 23 and the substrate 21 and the coat layer 23 and reflection are sufficiently prevented while the internal stress of the coat layer 23 is sufficiently prevented. The adhesiveness with the film 22 can be made particularly excellent. Moreover, the aesthetics of the timepiece dial 1 can be made particularly excellent. On the other hand, if the average thickness of the coat layer 23 is less than the lower limit value, the adhesion between the coat layer 23 and the substrate 21, depending on the constituent material of the substrate 21, the reflective film 22, and the coat layer 23, the coat layer It may be difficult to sufficiently improve the adhesion between the reflective film 23 and the reflective film 22. Further, the function of the coat layer 23 as described above may not be sufficiently exhibited. Moreover, when the average thickness of the coat layer 23 exceeds the upper limit, the variation in film thickness at each portion of the coat layer 23 tends to increase. Further, when the average thickness of the coat layer 23 is particularly large, the internal stress of the coat layer 23 becomes high and cracks and the like are likely to occur. In addition, when the average thickness of the coat layer 23 is particularly large, depending on the constituent material (transparency) of the coat layer 23, the constituent material of the reflective film 22, etc., the characteristics such as gloss and color tone of the reflective film 22 are sufficiently exhibited. And it may be difficult to sufficiently enhance the aesthetics of the timepiece dial 1 as a whole. As shown in the figure, when a part of the coat layer 23 penetrates into the opening 222, the average thickness of the coat layer 23 is a portion provided on the reflective film 22 (corresponding to the opening 222). The value of the average thickness for the part excluding the part to be used is adopted.

  Moreover, the coat layer 23 may have a uniform composition in each part, and may not be so. For example, the coating layer 23 may be a layer (gradient material) in which the contained component (composition) sequentially changes in the thickness direction. The coat layer 23 may be a laminate having a plurality of layers. Thereby, for example, the aesthetics of the timepiece dial 1 can be further enhanced while the adhesion between the substrate 21 and the reflective film 22 is particularly excellent.

Further, at least a part of the coat layer 23 may be removed, for example, when the timepiece dial 1 is used.
The plurality of coat layers 23 (coat layer 23 ′, coat layer 23 ″, coat layer 23 ′ ″) constituting the timepiece dial 1 may have the same configuration. They may have different configurations.

  Further, in the timepiece dial 1 of the present embodiment, as the plate-like member 2 (plate-like member 2 ′ ″), the reflection film 22 (reflection film) is formed on the main surfaces on both sides of the substrate 21 (substrate 21 ″ ′). 22 '' '). As a result, while the thickness of the timepiece dial 1 as a whole is made relatively thin, the effects caused by the repeated reflection of light by the reflection films 22 provided on both sides of the substrate 21 as described above become more prominent. It can be demonstrated. As a result, the aesthetic appearance of the timepiece dial 1 can be further improved.

[Manufacturing method of timepiece dial]
Next, a method for manufacturing the timepiece dial 1 of the present embodiment will be described.
In the timepiece dial plate 1 of the present embodiment, for example, a substrate preparation process for preparing the substrate 21 and at least a part of the surface of the substrate 21 are made of the constituent material of the reflective film 22 from the head portion by vibration of the piezoelectric element. A reflective film forming step of forming a reflective film 22 having a large number of fine convex portions (real parts) 31 by discharging droplets of the liquid composition contained in a predetermined pattern, and a reflective film 22 of the substrate 21 are provided. On the surface side, a coating layer is formed so as to cover the reflective film 22, thereby producing a coating layer forming step for obtaining the plate-like member 2 and a joining step for joining the plurality of plate-like members 2. be able to. That is, the manufacturing method of the timepiece dial 1 according to this embodiment is the same as that of the above-described embodiment except that it has a coat layer forming step and no spacer is used in the joining step.

(Coat layer forming process)
The formation method of the coat layer 23 is not particularly limited. For example, spin coating, dipping, brush coating, spray coating, electrostatic coating, electrodeposition coating, etc., wet plating such as electrolytic plating, immersion plating, electroless plating, etc. Coating methods such as chemical vapor deposition (CVD) such as thermal CVD, plasma CVD, and laser CVD, dry plating methods (vapor deposition methods) such as vacuum deposition, sputtering, and ion plating, and thermal spraying. When 23 is mainly composed of a resin material as described above, it is preferably formed by painting. Thereby, the coat layer 23 can be formed relatively easily. Moreover, when forming the coat layer 23 by coating, it is easy to add components, such as a coloring agent, to the material for forming the coat layer 23, and to adjust the addition amount.

  As described above, since the opening 222 is provided in the reflective film 22, in this step, the coat layer 23 is easily and reliably formed in a shape in which a part of the coat layer 23 enters the opening 222. Can be formed. As a result, the contact area between the coat layer 23 and the reflective film 22 is increased, and the adhesion between the coat layer 23 and the reflective film 22 in the timepiece dial 1 can be made particularly excellent.

(Joining process)
This step can be performed, for example, by fusion, pressure bonding, or the like, as in the above-described embodiment.
However, in this embodiment, since the coat layer 23 is provided on the surface of the plate-like member 2 subjected to this step, the bonding strength between the adjacent plate-like members 2 can be made particularly excellent. . In addition, the processing conditions in this step can be relaxed. Further, since the plate-like member 2 is provided with the coat layer 23 having a predetermined thickness, the distance between the adjacent reflection films 22 can be easily and without using a spacer as used in the above-described embodiment. It can be ensured to be uniform.

<Clock>
Next, the timepiece of the present invention provided with the timepiece dial 1 of the present invention as described above will be described.
The timepiece of the present invention has the timepiece dial 1 of the present invention as described above. As described above, the timepiece dial 1 of the present invention is excellent in light transmission (electromagnetic wave transmission) and decoration (aesthetic appearance). For this reason, the timepiece of the present invention provided with such a timepiece dial 1 can sufficiently satisfy the required requirements as a solar timepiece or a radio timepiece. As the parts other than the timepiece dial 1 (the timepiece dial 1 of the present invention) constituting the timepiece of the present invention, known parts can be used. An example will be described.

FIG. 4 is a cross-sectional view showing a preferred embodiment of the timepiece (watch) of the present invention.
As shown in FIG. 4, a wristwatch (portable watch) 100 according to the present embodiment includes a case (case) 72, a back cover 73, a bezel (edge) 74, and a glass plate (cover glass) 75. . Further, in the case 72, the timepiece dial 1 of the present invention as described above, the solar cell 9, and the movement 71 are accommodated, and further, hands (pointers) (not shown) and the like are accommodated. .

The glass plate 75 is usually made of transparent glass or sapphire having high transparency. Thereby, while being able to fully exhibit the aesthetics of the timepiece dial 1 of the present invention, a sufficient amount of light can be incident on the solar cell 9.
The movement 71 uses the electromotive force of the solar cell 9 to drive the pointer.
Although omitted in FIG. 4, in the movement 71, for example, an electric double layer capacitor for storing an electromotive force of the solar cell 9, a lithium ion secondary battery, a crystal oscillator as a time reference source, a crystal oscillation A semiconductor integrated circuit that generates a driving pulse that drives the clock based on the oscillation frequency of the child, a step motor that drives the wheel train mechanism every second in response to this driving pulse, and a movement of the step motor A train wheel mechanism for transmitting to the vehicle is provided.

The movement 71 includes a radio wave receiving antenna (not shown). And it has the function to perform time adjustment etc. using the received electromagnetic wave.
The solar cell 9 has a function of converting light energy into electric energy. The electric energy converted by the solar cell 9 is used for driving the movement.
In the solar cell 9, for example, a p-type impurity and an n-type impurity are selectively introduced into a non-single-crystal silicon thin film, and a p-type non-single-crystal silicon thin film and an n-type non-single-crystal silicon thin film It has a pin structure provided with an i-type non-single-crystal silicon thin film with a low impurity concentration in between.

A winding stem pipe 76 is fitted and fixed to the barrel 72, and a shaft 771 of a crown 77 is rotatably inserted into the winding stem pipe 76.
The body 72 and the bezel 74 are fixed by a plastic packing 78, and the bezel 74 and the glass plate 75 are fixed by a plastic packing 79.
Further, a back cover 73 is fitted (or screwed) to the barrel 72, and a ring-shaped rubber packing (back cover packing) 84 is inserted into the joint portion (seal portion) 85 in a compressed state. Has been. With this configuration, the seal portion 85 is sealed in a liquid-tight manner, and a waterproof function is obtained.

  A groove 772 is formed in the outer periphery of the shaft 771 of the crown 77, and a ring-shaped rubber packing (crown packing) 83 is fitted in the groove 772. The rubber packing 83 is in close contact with the inner peripheral surface of the winding stem pipe 76 and is compressed between the inner peripheral surface and the inner surface of the groove 772. With this configuration, the space between the crown 77 and the winding stem pipe 76 is liquid-tightly sealed, and a waterproof function is obtained. When the crown 77 is rotated, the rubber packing 83 rotates together with the shaft portion 771 and slides in the circumferential direction while being in close contact with the inner peripheral surface of the winding stem pipe 76.

In the above description, a wristwatch (portable clock) is described as an example of a clock, but the present invention is similarly applied to other types of clocks such as a portable clock, a table clock, and a wall clock other than the wristwatch. be able to.
As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to these.

For example, the timepiece dial of the present invention is not limited to the configuration as described above. For example, the timepiece dial of the present invention may be provided with neither a spacer nor a coat layer.
In the timepiece dial manufacturing method, an optional process can be added as necessary. For example, intermediate processing such as cleaning may be performed between the reflective film forming step and the coat layer forming step. Further, post-treatment such as polishing (lapping) may be performed after the formation of the coating layer.

In the first embodiment described above, in the plate-like member constituting the timepiece dial, the reflection film is described as being provided on the surface on the side on which the light (external light) is incident. May be provided on the opposite surface side.
In addition, the timepiece dial of the present invention is only required to have a plurality of laminated plate-like members each having a reflective film and a plate-like member. For example, the timepiece dial further includes a substrate having no reflective film. It may be.

It is sectional drawing which shows 1st Embodiment of the dial for timepieces of this invention. It is a disassembled perspective view which shows an example of the arrangement pattern of the real part (fine convex part) with which a reflecting film is provided. It is sectional drawing which shows 2nd Embodiment of the dial for timepieces of this invention. It is a fragmentary sectional view which shows suitable embodiment of the timepiece (portable timepiece) of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Timepiece dial 2 ... Plate-shaped member 2 '... Plate-shaped member (1st plate-shaped member) 2 "... Plate-shaped member (2nd plate-shaped member) 2' '' ... Plate-shaped member (1st 3, 21, 21 ′, 21 ″, 21 ′ ″... Substrate 22, 22 ′, 22 ″, 22 ′ ″... Reflective film 221, 221 ′, 221 ″, 221 ′ ″ ... Real part (fine convex part) 222, 222 ', 222' ', 222' '' ... Opening 23, 23 ', 23' ', 23' '' ... Coat layer 3 ... Spacer 9 ... Solar cell 71 ... Movement 72 ... barrel (case) 73 ... back cover 74 ... bezel (edge) 75 ... glass plate (cover glass) 76 ... winding stem pipe 77 ... crown 771 ... shaft portion 772 ... groove 78 ... plastic packing 79 ... plastic packing 83 ... Rubber packing 84 ... Mupakkin (back cover packing) 85 ... joint (seal portion) 100 ... wristwatch (portable timepiece)

Claims (10)

  A timepiece dial having a structure in which a plurality of plate-like members each including a substrate made of a light-transmitting material and a reflective film having openings in a predetermined pattern are stacked. .   The timepiece dial according to claim 1, wherein a spacer is disposed between the adjacent plate-like members.   The timepiece dial according to claim 1 or 2, wherein the reflective films have different arrangement patterns of the openings.   The timepiece dial according to claim 1, wherein the reflective films have different colors.   The timepiece according to any one of claims 1 to 4, wherein each of the plurality of plate-like members constituting the timepiece dial has an aperture ratio of 10 to 90% when the reflective film is viewed in plan. Dial for use.   The timepiece dial according to any one of claims 1 to 5, wherein the number of stacked plate-like members in the timepiece dial is 3 to 10.   The timepiece dial according to any one of claims 1 to 6, wherein an aperture ratio when the timepiece dial is viewed in plan is 10 to 90%.   The timepiece dial according to any one of claims 1 to 7, wherein the plate-like member is provided with the reflective film provided on main surfaces on both sides of the substrate.   The timepiece dial according to any one of claims 1 to 8, wherein the plate-like member includes a coating layer that covers the reflective film provided on the substrate.   A timepiece comprising the timepiece dial according to claim 1.

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