JP5594412B2 - Clock dial and clock - Google Patents

Description

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

In general, a timepiece dial uses characters and numerals (so-called time characters, etc.), scales, symbols, and various marks having functions such as indicating time.
As a method for forming such an index, a printing method is widely used.
However, the index formed by the conventional printing method has a problem that it is inferior to a high-class feeling. In particular, when a composition in which metal powder or the like is dispersed is used, the metal powder is not uniformly dispersed in the formed indicator portion due to changes in the dispersion state of the metal powder or the like. In addition, there is a problem that so-called bleeding and sagging are likely to occur, and the aesthetic appearance of the resulting timepiece dial is particularly inferior.

  On the other hand, a method of attaching and fixing a planting material called “typesetting” is employed particularly in high-class timepieces (see, for example, Patent Document 1). However, in such a method, the planting material must be fixed (typesetting) to the substrate manually one by one, leading to an increase in processes and costs. Moreover, in the timepiece dial manufactured by attaching and fixing the planting material, when a relatively large external force (impact force) or the like is applied, the planting material may be detached from the dial body (substrate). there were. In addition, the planting material used in such a method generally has a foot for planting the dial body, but the foot is thinner than other parts. For this reason, when a comparatively large external force or the like is applied, there is a problem that the foot part breaks. The above problems tend to occur more easily as the height of the planting material is higher.

Japanese Patent Laid-Open No. 2003-247096

An object of the present invention exhibits an excellent appearance shiny, to provide a timepiece dial having excellent durability 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 is a timepiece dial having a substrate and an index,
The indicator is
A first composition comprising a first glossy powder and a first curable resin provided on the surface of the substrate;
Wherein provided on a surface of the first composition, it possesses a second composition comprising a second gloss powder and second curable resin, a,
The first glossy powder and the second glossy powder are formed of a base formed of plastic and a metal thin film,
The average thickness of the first glossy powder and the second glossy powder is 10 μm or more and 30 μm or less,
The average particle size of the first glossy powder and the second glossy powder is 100 μm or more and 155 μm or less,
The average thickness of the base is 7 μm or more and 29.9 μm or less,
The metal thin film has an average thickness of 0.01 μm or more and 3.0 μm or less .
As a result, it is possible to provide a timepiece dial having a glossy and excellent appearance and excellent durability.

In the timepiece dial of the present invention, the substrate is made of at least one of Fe, Cu, Zn, Ni, Mg, Cr, Mn, Mo, Nb, Al, V, Zr, Sn, Au, Pd, Pt, and Ag. It is preferable that it is an alloy containing.
Thereby, a timepiece dial having particularly excellent strength characteristics can be provided. Further, the substrate itself has an excellent gloss, and the aesthetic appearance of the entire timepiece dial can be made particularly excellent.

In the timepiece dial of the present invention, it is preferable that the substrate is one of plastic, ceramics, stone, and wood.
Thereby, it is possible to provide a timepiece dial that is relatively light and easy to carry. Further, it can be formed into a desired shape relatively easily.

In the timepiece dial of the present invention, the metal thin film is Fe, Cu, Zn, Ni, Mg, Cr, Mn, Mo, Nb, Al, V, Zr, Sn, Au, Pd, Pt, at least one Ag An alloy containing is preferable.
Thereby, the aesthetic appearance of the timepiece dial can be made particularly excellent.

In the timepiece dial of the present invention, it is preferable that the index is a letter / number , a scale, a symbol, or a mark.
In the timepiece dial of the present invention, it is preferable that the average thickness of the index is 15 μm or more and 400 μm or less.
Thereby, while making the adhesion between the substrate and the indicator sufficiently excellent, the three-dimensional effect of the indicator can be made particularly excellent, and the aesthetic appearance of the timepiece dial can be made particularly excellent. it can. That is, both the aesthetic appearance and the durability of the timepiece dial can be made particularly excellent. Further, the visibility of the index can be made particularly excellent.

The timepiece of the present invention includes the timepiece dial of the present invention.
As a result, it is possible to provide a timepiece having a timepiece dial having a glossy and excellent appearance and excellent durability. In addition, since the timepiece dial has a great influence on the appearance of the entire timepiece, the timepiece having the timepiece dial as described above has an excellent aesthetic appearance as a whole.

According to the present invention exhibits excellent appearance shiny, to provide a timepiece dial having excellent durability, also can provide a timepiece having the timepiece dial.

It is sectional drawing which shows suitable embodiment of the manufacturing method of the timepiece dial of this invention. It is sectional drawing which shows suitable embodiment of the manufacturing method of the timepiece dial of this invention. It is a top view for demonstrating the positional relationship of the wire (1st wire) of a screen plate (1st screen plate) and a board | substrate in a 1st screen printing process. It is a top view for demonstrating the positional relationship of the wire (2nd wire) and board | substrate of a screen plate (2nd screen plate) in a 2nd screen printing process. It is a top view which shows suitable embodiment of the timepiece dial of this invention. It is a fragmentary sectional view which shows suitable embodiment of the timepiece (watch) of this invention.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. 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.
<Manufacturing method of timepiece dial>
First, the manufacturing method of this invention is demonstrated.

  1 and 2 are cross-sectional views showing a preferred embodiment of the timepiece dial manufacturing method of the present invention, and FIG. 3 is a screen plate (first screen plate) wire (first screen plate) in the first screen printing step. FIG. 4 is a plan view for explaining the positional relationship between the first wire) and the substrate. FIG. 4 shows the screen (second screen plate) wire (second wire) and the substrate in the second screen printing step. FIG. 5 is a plan view showing a preferred embodiment of the timepiece dial of the present invention. In order to facilitate understanding, the plate film 72 is indicated by a hatched portion in FIG. 3, and the plate film 82 is indicated by a hatched portion in FIG. FIG. 4 is a diagram for explaining the positional relationship between the substrate 2 and the second wire 811 (the positional relationship between the plate film 82 and the wire 811) in the second screen printing process. In order to prevent this from happening and facilitate understanding, the illustration of the cured portion 32A formed in the above process and the glossy powder 31A dispersed in the cured portion 32A is omitted.

  The manufacturing method according to the present embodiment includes a substrate preparation step (1a) for preparing a substrate (dial plate main body) 2 and first screen printing for performing screen printing on the substrate 2 using the first screen plate 7. A step (1b), and a first curing step (1c) in which the curable resin 32A ′ contained in the first composition applied in the first screen printing step is cured to form a first cured portion 32A. A second screen printing step (1d) for performing screen printing on the substrate 2 subjected to the first screen printing step and the first curing step using the second screen plate 8; A second curing step (1e) for curing the curable resin 32B ′ contained in the second composition applied in the screen printing step to form a second cured portion 32B and forming the index 3; Yes.

[Board preparation process]
First, a substrate (a dial body) 2 is prepared (1a).
The substrate 2 is a main part of the timepiece dial 1 and has a function of holding an index 3 described later.
The substrate 2 may be made of any material.
As a constituent material of the substrate 2, for example, various metal materials, various non-metal materials, and the like can be used.

When the board | substrate 2 is comprised by the metal material, the timepiece dial 1 which has the especially outstanding intensity | strength characteristic can be provided. Moreover, when the board | substrate 2 is comprised with a metal material, the board | substrate (dial board main body) 2 itself will have the outstanding glossiness, and shall make the aesthetic appearance as the timepiece dial plate 1 whole especially excellent. it can.
When the board | substrate 2 is comprised with a nonmetallic material, the dial 1 for timepieces which are generally comparatively lightweight and easy to carry can be provided, for example. Moreover, when the board | substrate 2 is comprised with a nonmetallic material, it can shape | mold to a desired shape comparatively easily, for example.

Examples of the metal material constituting the substrate 2 include Fe, Cu, Zn, Ni, Mg, Cr, Mn, Mo, Nb, Al, V, Zr, Sn, Au, Pd, Pt, Ag, and the like. Examples include alloys containing at least one kind (for example, bronze, brass, and white).
Moreover, as a nonmetallic material which comprises the board | substrate 2, ceramics, a plastics (especially heat resistant plastic), a stone material, wood, etc. are mentioned, for example.

As ceramics, for example, Al ₂ O ₃ , SiO ₂ , TiO ₂ , Ti ₂ O ₃ , ZrO ₂ , Y ₂ O ₃ , oxide-based ceramics such as barium titanate and strontium titanate, AlN, Si ₃ N ₄ , SiN, TiN, BN, ZrN, HfN, VN, TaN, NbN, CrN, Cr ₂ N, and other nitride ceramics, graphite, SiC, ZrC, Al ₄ C ₃ , CaC ₂ , WC, TiC, HfC, VC , Carbide ceramics such as TaC and NbC, boride ceramics such as ZrB ₂ and MoB, or composite ceramics in which two or more of these are arbitrarily combined.
When the substrate 2 is made of the above ceramics, the timepiece dial 1 having particularly excellent strength and hardness can be obtained.

  Moreover, as a plastic material which comprises the board | substrate 2, various thermoplastic resins and various thermosetting resins are mentioned, for example, polyethylene, a polypropylene, an ethylene-propylene copolymer, an ethylene-vinyl acetate copolymer (EVA) etc. Polyolefin, cyclic polyolefin, modified polyolefin, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide (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 tree) ), Acrylonitrile-styrene copolymer (AS resin), butadiene-styrene copolymer, polyoxymethylene, polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyester such as polycyclohexane terephthalate (PCT), polyether, polyether ketone (PEK), polyether ether ketone (PEEK), polyether imide, polyacetal (POM), polyphenylene oxide, modified polyphenylene oxide, polysulfone, Polyethersulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, polyvinylidene fluoride , Other fluororesins, styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, transpolyisoprene, fluororubber, chlorinated polyethylene, and other thermoplastic elastomers, 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. Paraxylylene resin, etc., or copolymers, blends, polymer polymers mainly containing these Lee, and 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 substrate 2 may have a substantially uniform composition at each site, or may have a different composition depending on the site. For example, the substrate 2 may have a base portion and a coat layer provided on the base portion.
The shape and size of the substrate 2 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 (dial plate main body) 2 has a flat plate shape, but may have a curved plate shape, for example.

Although the average thickness of the board | substrate 2 is not specifically limited, It is preferable that it is 200-700 micrometers, and it is more preferable that it is 300-600 micrometers.
The substrate 2 may be formed by any method such as compression molding or injection molding. The surface of the substrate 2 may be subjected to surface processing such as mirror surface processing, streak processing, and satin processing. Thereby, it becomes possible to give variations to the texture of the timepiece dial 1 to be obtained, and the aesthetic appearance of the timepiece dial 1 can be further improved.

In addition, the substrate 2 may have been subjected to lyophilic treatment or lyophobic treatment on a part of its surface. More specifically, a lyophilic treatment is applied to a site on which the composition on the substrate 2 is to be applied (site where the index 3 is to be formed), or a site on which the composition is to be applied on the substrate 2 (the index 3 is formed). A part other than the part to be treated may be subjected to a liquid repellent treatment. Thereby, in the screen printing process (the 1st screen printing process and the 2nd screen printing process) explained in full detail later, a composition is selectively given to the desired part on substrate 2 easily and surely. Can do. As a result, the desired shape and pattern index 3 can be more reliably formed on the timepiece dial 1. Further, by applying a liquid repellency treatment to the portion of the substrate 2 to which the composition is not applied, it is possible to prevent dirt and the like from adhering to the obtained timepiece dial 1. The reliability can be made particularly excellent.
In addition, various cleaning processes may be performed on the surface of the substrate 2 prior to a process described later. Thereby, for example, the adhesion between the substrate 2 and the composition (index 3) can be made particularly excellent.

  By the way, in the manufacturing method of this embodiment, the above-mentioned board | substrate 2 is screen-printed and the target shape and the parameter | index 3 of a pattern are formed. And in the 1st screen printing process and 2nd screen printing process which perform screen printing, all contain the glossy powder 31 and the curable resin 32 as a composition for screen printing. That is, the first composition used in the first screen printing step includes the glossy powder 31A and the curable resin 32A, and the second composition used in the second screen printing step is glossy. It contains powder 31B and curable resin 32B. In particular, in the present embodiment, the glossy powder 31 contained in the first composition and the second composition is one in which a metal thin film 312 is provided on a plastic base 311. That is, the glossy powder 31A is obtained by providing a metal thin film 312A on a plastic base 311A, and the glossy powder 31B is obtained by providing a metal thin film 312B on a plastic base 311B.

Next, the first screen printing process using the first composition will be described in detail.
[First screen printing process]
Next, screen printing is performed on the surface of the substrate 2 using the first composition including the glossy powder 31A and the curable resin 32A ′ and the first screen plate 7 (1b). Thereby, in the surface of the board | substrate 2, the area | region to which the 1st composition was provided and the area | region to which the 1st composition was not provided are mixed. The pattern to which the first composition is applied is determined according to the shape / pattern of the index 3 to be formed.

By using the screen printing method, the composition can be repeatedly applied to the plurality of substrates 2 in a predetermined pattern while preventing variation between individuals. Therefore, it can be suitably applied to mass production of the timepiece dial 1 having excellent quality stability.
The screen plate (first screen plate) 7 is composed of a mesh (first mesh) 71 composed of a wire (first wire) 711 and a plate film (first plate film) that blocks a part of the mesh 71. 72.
In the first screen printing step, the upper surface of the screen plate 7 (the composition is arranged) in a state where the composition (first composition) is arranged on the screen plate 7 having the mesh 71 constituted by the wires 711. The surface is pressed by the squeegee 9.

In this step, the composition (first composition) applied on the substrate 2 includes the glossy powder 31A (31) and the curable resin 32A ′ (32 ′).
In the present embodiment, the glossy powder 31A (31) is obtained by providing a metal thin film 312A (312) on a plastic base 311A (311). Since the glossy powder 31A has such a structure, when the composition passes through the mesh 71 of the screen plate 7, the glossy powder 31A can be suitably elastically deformed, and the mesh of the screen plate 7 can be obtained. 71 is surely prevented from clogging. The glossy powder 31A can be easily and reliably passed through the mesh 71 of the screen plate 7 and is applied to the substrate 2 (a composition patterned to correspond to the index 3 to be formed). Variation in the content of the glossy powder 31A in each part of the product. Therefore, the aesthetic appearance of the timepiece dial 1 obtained can be made particularly excellent while the productivity of the timepiece dial 1 is excellent. In particular, in this embodiment, the glossy powder 31A is obtained by providing a metal thin film 312A on both surfaces of a plastic base 311A. Thereby, when the composition passes through the mesh 71 of the screen plate 7, the glossy powder 31 </ b> A can be more preferably elastically deformed, and more reliably prevent clogging from occurring in the mesh 71 of the screen plate 7. Is done. Further, since the glossy powder 31A has the above-described configuration, in the manufacturing process of the timepiece dial 1, the thermal expansion coefficient of the constituent material of the base 311A and the thermal expansion of the constituent material of the metal thin film 312A are obtained. Due to the difference from the rate, it is possible to surely prevent the glossy powder 31A from being warped. As a result, the aesthetic appearance of the manufactured timepiece dial 1 can be reliably improved. Further, even when the temperature of the timepiece dial 1 manufactured by the method of the present invention is changed, the glossy powder 31A is reliably prevented from being deformed. As a result, in the timepiece dial 1, due to temperature changes, the adhesion between the glossy powder 31 </ b> A and the cured portion 32 </ b> A formed by the curable resin 32 </ b> A ′ is reduced, or the adhesion between the substrate 2 and the index 3 is decreased. It is possible to reliably prevent the reduction, and the durability and reliability of the timepiece dial 1 can be made particularly excellent.

  Examples of the plastic material constituting the base 311A include various thermoplastic resins and various thermosetting resins, such as polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer (EVA), and the like. Polyolefin, cyclic polyolefin, modified polyolefin, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyamide (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 ( BS resin), acrylonitrile-styrene copolymer (AS resin), butadiene-styrene copolymer, polyoxymethylene, polyvinyl alcohol (PVA), ethylene-vinyl alcohol copolymer (EVOH), polyethylene terephthalate (PET), poly Polyester such as butylene terephthalate (PBT) and polycyclohexane terephthalate (PCT), polyether, polyether ketone (PEK), polyether ether ketone (PEEK), polyether imide, polyacetal (POM), polyphenylene oxide, modified polyphenylene oxide, Polysulfone, polyethersulfone, polyphenylene sulfide, polyarylate, aromatic polyester (liquid crystal polymer), polytetrafluoroethylene, polyfluoride Various thermoplastic elastomers such as vinylidene, other fluorine resins, styrene, polyolefin, polyvinyl chloride, polyurethane, polyester, polyamide, polybutadiene, trans polyisoprene, fluoro rubber, chlorinated polyethylene, 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. Paraxylylene resins, etc., or copolymers, blends, A mer alloy, etc. can be used, and one or more of these can be used in combination (for example, as a blend resin, polymer alloy, laminate, etc.), but the base 311A is composed of a polyester resin. Is preferred. Thereby, when the composition passes through the mesh (first mesh) 71 of the screen plate (first screen plate) 7, the glossy powder 31 </ b> A can be suitably elastically deformed, and the mesh of the screen plate 7. 71 prevents clogging more reliably. The glossy powder 31A can be easily and reliably passed through the mesh 71 of the screen plate 7 and is applied to the substrate 2 (a composition patterned to correspond to the index 3 to be formed). Variation in the content of the glossy powder 31A in each part of the product. Therefore, the productivity of the timepiece dial 1 can be made particularly excellent, and the aesthetic appearance of the obtained timepiece dial 1 can be made particularly excellent.

  The average thickness of the base 311A is preferably 7 to 29.9 μm, and more preferably 10 to 27.8 μm. When the average thickness of the base 311A is within the above range, the glossy powder 31A can be suitably elastically deformed when the composition passes through the mesh 71, and the timepiece dial 1 to be manufactured is manufactured. , The glossy powder 31A can be arranged so as to follow the surface shape of the indicator 3 to be formed. Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent while the productivity of the timepiece dial 1 is made particularly excellent.

  Examples of the metal material constituting the metal thin film 312A include Fe, Cu, Zn, Ni, Mg, Cr, Mn, Mo, Nb, Al, V, Zr, Sn, Au, Pd, Pt, Ag, and the like. Among them, an alloy containing at least one kind (for example, bronze, brass, white or the like) can be mentioned, among which Cu, Al, Au, Pt, and Ag are preferable. Thereby, the aesthetic appearance of the timepiece dial 1 to be manufactured can be made particularly excellent.

  The average thickness of the metal thin film 312A is preferably 0.01 to 3.0 μm, and more preferably 0.02 to 2.0 μm. When the average thickness of the metal thin film 312A is within the above range, the metal thin film 312A is formed in the glossy powder 31A while effectively preventing the thickness of the base 311A from becoming relatively thin. The texture of the metal material can be fully exhibited. Thereby, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent while the productivity of the timepiece dial 1 is made particularly excellent.

The glossy powder 31A as described above is preferably manufactured as follows. That is, the glossy powder 31A is formed on a metal layer by a vapor phase film forming method such as vacuum deposition, sputtering, or ion plating on a plastic sheet material (a sheet material having a thickness corresponding to the thickness of the base 311A). (A metal layer corresponding to the thickness of the metal thin film 312A) is formed and then cut into a predetermined size (a size corresponding to the average particle size of the glossy powder 31A). Is preferred. Thereby, it is possible to easily and reliably obtain the glossy powder 31A that is excellent in adhesion between the base 311A and the metal thin film 312A, has an aesthetic appearance, and can be suitably elastically deformed.
In the configuration shown in the figure, the metal thin film 312A is provided on both surfaces (main surfaces) of the base 311A. However, the metal thin film 312A may be provided only on one surface of the base 311A.

  The average particle size of the glossy powder 31A is preferably 100 to 155 μm, more preferably 108 to 147 μm, and still more preferably 113 to 141 μm. Thereby, the glossy powder 31A can be suitably elastically deformed when passing through the mesh 71 of the screen plate 7 to be described in detail later, and the shape is quickly restored after passing through the mesh 71. . Therefore, in the composition applied (patterned) on the substrate 2, the glossy powder 31 </ b> A has a surface of the composition whose main surface direction (surface direction) of the metal thin film 312 </ b> A is patterned on the substrate 2. Arrangement along the shape. As a result, in the manufactured timepiece dial 1, the glossy powder 31 </ b> A can effectively reflect light like diamond or cut glass, and has an excellent aesthetic appearance. It can be. On the other hand, when the average particle size of the glossy powder is less than the lower limit, the gloss that is brilliant in appearance is reduced, and it is difficult to make the aesthetic appearance of the timepiece dial sufficiently excellent. there is a possibility. When the average particle size of the glossy powder exceeds the upper limit, it becomes difficult for the glossy powder to pass through the mesh of the screen plate, and the glossy powder is easily clogged. As a result, the productivity of the timepiece dial may be lowered, and it may be difficult to make the aesthetic appearance of the obtained timepiece dial sufficiently excellent. In the present invention, the particle diameter of the glossy powder refers to the value of the diameter of a perfect circle having the same circumference as the circumference when the glossy powder is viewed in plan. More specifically, when the shape of the glossy powder in plan view is a square having a side length of a [μm], the particle size of the glossy powder is 4a / π [μm]. .

The shape of the glossy powder 31A in plan view is not particularly limited, but is preferably substantially square.
The average thickness of the glossy powder 31 </ b> A is preferably 10 to 30 μm, and more preferably 12 to 28 μm. When the average thickness of the glossy powder 31A is within the above range, the glossy powder 31A can be more preferably elastically deformed when passing through the mesh 71 of the screen plate 7, and pass through the mesh 71. After that, the shape is restored more quickly. As a result, the aesthetic appearance of the timepiece dial 1 can be made particularly excellent while the productivity of the timepiece dial 1 is particularly excellent.

The curable resin 32A ′ (32 ′) is in an uncured or semi-cured state.
As the curable resin 32A ′, a resin material that is cured by energy rays (for example, heat (heat rays), light (including light other than visible light such as ultraviolet rays), electron beams) can be used. A curable resin, a photocurable resin, an electron beam curable resin, or the like can be used. When a photocurable resin is used as the curable resin 32A ′, the productivity of the timepiece dial 1 can be made particularly excellent. Further, deterioration of the constituent material of the timepiece dial 1 at the time of manufacture can be prevented more reliably, and the reliability of the manufactured timepiece dial 1 can be made particularly excellent.

The composition may contain components other than the glossy powder 31A and the curable resin 32A ′ described above. Examples of such components include various solvents (functioning as a dispersion medium for dispersing the glossy powder 31A), a dispersant, a thermoplastic resin, and the like.
The viscosity at 25 ° C. of the composition containing the glossy powder 31A and the curable resin 32A ′ is preferably 8000 to 20000 cps, more preferably 12000 to 19000 cps, and further preferably 15000 to 18000 cps. When the viscosity of the composition is a value within the above range, a composition containing a relatively large gloss powder 31A (a relatively large gloss powder 31A with respect to the mesh roughness of the screen plate 7) as described above is obtained. When passing through the mesh 71 of the screen plate 7, the glossy powder 31A is suitably elastically deformed to effectively cause clogging or to deteriorate the dispersion state of the glossy powder 31A in the composition. Can be prevented. On the other hand, when the viscosity of the composition is less than the lower limit, it is difficult to elastically deform the glossy powder 31A, and the mesh 71 of the glossy powder 31A is easily clogged. Further, when the viscosity of the composition exceeds the upper limit, the efficiency (workability) of screen printing is reduced, and the elastic deformation of the glossy powder 31A and the restoration of the shape after passing through the mesh are less likely to occur. . As a result, the productivity of the timepiece dial 1 decreases, and the aesthetic appearance of the manufactured timepiece dial 1 tends to decrease.

  In this step, the screen plate (first screen plate) 7 is provided with a mesh (first mesh) 71 composed of a wire (first wire) 711, and part of the mesh 71 is a plate film (first film). The plate film) 72 is used. Thereby, in the area | region which is not obstruct | occluded by the plate film 72 among the mesh 71, it is comprised so that the composition may be selectively supplied on the board | substrate 2 from the clearance gap between the wires 711. FIG.

  And the screen plate 7 used at this process is equipped with the wire 711 which the surface vicinity comprised at least polytetrafluoroethylene, mesh roughness is 20-120, and the diameter of the wire 711 is 50-120 micrometers. It is preferable that Thereby, while making the printing speed of screen printing especially excellent, when the glossy powder 31A passes through the mesh 71 of the screen plate 7, the glossy powder 31A can be elastically deformed more suitably, and the mesh 71 After passing, the shape can be quickly restored. As a result, in the manufactured timepiece dial 1, the glossy powder 31A can reflect light more effectively, and the aesthetic appearance of the timepiece dial 1 can be made particularly excellent. .

As described above, it is preferable that the screen plate 7 used in this step is provided with the wire 711 at least near the surface made of polytetrafluoroethylene, but the entire wire 711 is made of polytetrafluoroethylene. More preferably, it is constituted by Thereby, the effects as described above are more remarkably exhibited.
Further, as described above, the mesh roughness of the screen plate 7 used in this step is preferably 20 to 120, more preferably 30 to 100, and 50 to 70. Further preferred. Thereby, the effects as described above are more remarkably exhibited.
As described above, the diameter of the wire 711 constituting the screen plate 7 used in this step is preferably 50 to 120 μm, more preferably 50 to 90 μm, and 60 to 70 μm. Further preferred. Thereby, the effects as described above are more remarkably exhibited.

As a constituent material of the squeegee 9, for example, urethane rubber, silicone rubber, various synthetic rubbers, various metals and the like can be used, and among them, urethane rubber is preferable.
In this step, as shown in FIG. 3, the first composition has a predetermined arrangement depending on the configuration of the screen plate 7 (the shape / size of the plate film 72, the thickness / arrangement of the wire 711, etc.) 2 above.

[First curing step]
Next, the curable resin 32A ′ contained in the first composition applied in the first screen printing step described above is cured to form a first cured portion 32A (1c). Thus, prior to the second screen printing step to be described later, the curable resin 32A ′ contained in the first composition applied onto the substrate 2 is cured, whereby the first composition is transferred to the substrate 2. The movement of the glossy powder 31A after being applied to the top is restricted, and as a result, the aggregation of the glossy powder 31 is prevented and the aesthetic appearance of the finally obtained dial 1 is particularly excellent. Can be. Moreover, since the dripping (liquid dripping) of the composition in the manufacturing process of the timepiece dial 1 can be surely prevented, the timepiece character having the index 3 as a printing part having an excellent stereoscopic effect and a sharp outline is provided. The board 1 can be obtained.

The curable resin 32A ′ is cured by a method corresponding to the type of the curable resin 32A ′. For example, when the curable resin 32A ′ is a thermosetting resin, it is performed by heating, and when the curable resin 32A ′ is a photocurable resin, it is performed by irradiation with light (energy rays).
In this step, the curable resin 32A ′ may be completely cured, or may be not completely cured (in a semi-cured state) although the degree of polymerization is increased. Even in such a case, the curing reaction of the curable resin 32A ′ can sufficiently proceed in the second curing step described later.

[Second screen printing process]
Next, the second composition containing the glossy powder 31B and the curable resin 32B ′ and the second screen plate 8 were used for the first screen printing step and the first curing step. Screen printing is performed on the substrate 2 (1d).
The second composition used in this step contains the glossy powder 31B and the curable resin 32B ′, and the screen plate (second screen plate) 8 is a wire (second wire) 811. And a plate film (second plate film) 82 that closes a part of the mesh 81.

In this step, the upper surface (the surface on which the composition is disposed) of the screen plate 8 is disposed in a state where the composition (second composition) is disposed on the screen plate 8 having the mesh 81 constituted by the wires 811. , By pressing with a squeegee 9. As the squeegee 9, the one described in the first screen printing process can be used.
The second composition is applied so that at least a part of the second composition overlaps with the first composition (cured portion 32) when the substrate 2 is viewed in plan. In particular, in the present embodiment, the second composition is applied on the portion to which the first composition is applied, that is, on the cured portion 32A. Thereby, the stereoscopic effect of the timepiece dial 1 finally obtained can be made excellent.

In the screen printing in this step, the relative position of the second wire 811 with respect to the substrate 2 (see FIG. 4) is the relative position of the first wire 711 with respect to the substrate 2 in the first screen printing step (see FIG. 4). This is performed differently from 3).
As a result, the watch dial plate 1 finally obtained is recognized by the observer as having an excellent aesthetic appearance with the entire index 3 having a glossy appearance. This is considered to be due to the following reasons.
In other words, in the first screen printing process, the portion corresponding to the back surface of the wire 711 of the substrate 2 (the portion overlapping with the wire 711 when the substrate 2 is viewed in plan) is the glossiness contained in the first composition. The powder 31A cannot be sufficiently wrapped around. For this reason, at the end of the first screen printing process (end of the first curing process), when the substrate 2 is viewed in plan, a portion overlapping the wire 711 (first wire) is conspicuous, and it is sufficiently Although an excellent appearance cannot be obtained, the relative position of the second wire 811 with respect to the substrate 2 is different from the relative position of the first wire 711 with respect to the substrate 2 in the first screen printing process. Thus, by performing screen printing (second screen printing step), it is possible to make the presence of a portion overlapping with the wire 711 (first wire) in a plan view of the substrate 2 less noticeable. The aesthetic appearance of the timepiece dial 1 thus obtained can be made sufficiently excellent. The above-mentioned problems are particularly caused when the first composition has a relatively high viscosity, as described above, or when the average particle size of the glossy powder is relatively large, the diameter of the wire of the screen plate. However, in the present invention, as described above, when the first composition has a relatively high viscosity, the average particle size of the glossy powder Even when the diameter is relatively large, or when the diameter of the wire 711 of the screen plate 7 is relatively large, the occurrence of the above-described problem can be reliably prevented.

  The screen plate generally has a wire group composed of a plurality of wires arranged in parallel to each other and a wire group composed of a plurality of wires arranged so as to be orthogonal to these wires. The axial direction of the first wire 711 when the first screen plate 7, the second screen plate 8 and the substrate 2 are superposed in such an arrangement that the desired printing can be performed on the substrate 2. The angle θ formed with the axial direction of the second wire 811 (however, 0 ° ≦ θ <90 °. In the configurations shown in FIGS. 3 and 4, θ is 45 °) is not particularly limited, but 30 to 60 The degree is preferably 40 to 50. Thereby, the above effects can be exhibited more significantly, and the aesthetic appearance of the finally obtained dial 1 can be made particularly excellent.

  The first plate film 72 and the second plate film 82 have substantially the same shape and size as each other, and the first plate film 72 relative to the substrate 2 in the first screen printing step. The relative position of the second plate film 82 with respect to the substrate 2 in the second screen printing step is preferably substantially the same. More specifically, when the first screen plate 7 and the second screen plate 8 are overlapped and viewed in plan, the area ratio of the region of the first plate film 72 that overlaps the second plate film 82. Is preferably 98% or more, more preferably 99% or more, and even more preferably 99.5% or more. Further, when the first screen plate 7 and the second screen plate 8 are overlapped and viewed in plan, the area ratio of the region overlapping the first plate film 72 in the second plate film 82 is 98% or more. Preferably, it is 99% or more, more preferably 99.5% or more. By satisfying such conditions, the aesthetic appearance of the timepiece dial 1 finally obtained can be made particularly excellent.

The second composition preferably satisfies the same conditions (including the conditions for the constituent components of the composition) as described in the description of the first composition. Thereby, the same effect as described in the first screen printing step described above can be obtained.
Further, the average particle diameter of the glossy powder 31A contained in the first composition is D ₁ [μm], and the average particle diameter of the glossy powder 31B contained in the second composition is D ₂ [μm]. Then, it is preferable that the relationship of 0.90 ≦ D ₁ / D ₂ ≦ 1.10 is satisfied, and it is more preferable that the relationship of 0.95 ≦ D ₁ / D ₂ ≦ 1.05 is satisfied. By satisfying such a relationship, the aesthetic appearance of the timepiece dial 1 finally obtained can be made particularly excellent.

  When the second composition satisfies the same conditions as those described in the description of the first composition (including the conditions for the constituent components of the composition), the second composition The product and the first composition may be the same composition or different compositions, but are preferably the same composition. Thereby, the aesthetic appearance of the timepiece dial 1 finally obtained can be made particularly excellent.

The screen plate (second screen plate) 8 used in this step is the same as that of the screen plate (first screen plate) 7 described above with respect to the constituent material of the wire, the wire diameter, and the mesh roughness. It is preferable to satisfy the same conditions as described. Thereby, the same effect as described in the first screen printing step described above can be obtained.
Further, the mesh roughness of the first screen plate 7 and the mesh roughness of the second screen plate 8 are preferably substantially the same. More specifically, when the mesh roughness of the first screen plate 7 is N ₁ [No.] and the mesh roughness of the second screen plate 8 is N ₂ [No.], 0.8 ≦ N ₁ / It is preferable to satisfy the relationship of N ₂ ≦ 1.2, and it is more preferable to satisfy the relationship of 0.9 ≦ N ₁ / N ₂ ≦ 1.1. By satisfying such a relationship, the aesthetic appearance of the timepiece dial 1 finally obtained can be made particularly excellent.

[Second curing step]
Next, the curable resin 32B ′ contained in the second composition applied in the second screen printing step described above is cured to form the second cured portion 32B, and the index 3 is formed (1e). Thereby, the indicator 3 is formed and the timepiece dial 1 is obtained. The timepiece dial 1 obtained in this way is provided with the indicator 3 that exhibits a glossy and excellent appearance, and the aesthetic appearance (luxury feeling) of the timepiece dial 1 as a whole is also excellent. In addition, since the index 3 is formed using the composition (the first composition and the second composition) in which the glossy powder 31 is dispersed, the glossy powder 31 is securely fixed to the cured portion 32. Thus, the glossy powder 31 is effectively prevented from falling off when the timepiece dial 1 is used. Therefore, the timepiece dial 1 is excellent in durability and reliability.

In the present invention, the index refers to things that contribute to the user's recognition of the time, the direction of the clock, the functions of the clock, the brand of the clock, the model number, and the like. Specific examples of the index include letters and numbers (so-called time letters), scales, symbols, various marks, and the like.
The curable resin 32B ′ is cured by a method according to the type of the curable resin 32B ′. For example, when the curable resin 32B ′ is a thermosetting resin, it is performed by heating, and when the curable resin 32B ′ is a photocurable resin, it is performed by irradiation with light (energy rays).

  The average thickness of the index 3 formed in this step is not particularly limited, but is preferably 10 to 400 μm, and more preferably 15 to 300 μm. When the average thickness of the index 3 is a value within the above range, the solidity of the index 3 can be made particularly excellent while sufficiently improving the adhesion between the substrate 2 and the index 3. The aesthetic appearance of the timepiece dial 1 can be made particularly excellent. That is, when the average thickness of the index 3 is a value within the above range, both the aesthetic appearance and the durability of the timepiece dial 1 can be made particularly excellent. Further, when the average thickness of the index 3 is a value within the above range, the visibility of the index 3 can be made particularly excellent.

<Watch dial>
The timepiece dial 1 of the present invention is manufactured by the method as described above.
By being manufactured by the method as described above, the timepiece dial 1 has an excellent aesthetic appearance and is also excellent in durability.
<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 of the present invention as described above. In addition, as components other than the timepiece dial (the timepiece dial of the invention) constituting the timepiece of the invention, known parts can be used. Hereinafter, an example of the configuration of the timepiece of the invention will be described. Will be described.
FIG. 6 is a cross-sectional view showing a preferred embodiment of the timepiece (watch) of the present invention.

As shown in FIG. 6, a wristwatch (portable watch) 100 according to this embodiment includes a trunk (case) 102, a back cover 103, a bezel (edge) 104, and a glass plate (cover glass) 105. . Further, in the case 102, the timepiece dial 1 and the movement 101 as described above are accommodated, and hands (pointers) not shown are accommodated.
The glass plate 105 is usually made of transparent glass or sapphire having high transparency. Thereby, the aesthetic appearance of the timepiece dial 1 can be sufficiently exhibited.

Although omitted in FIG. 6, the movement 101 includes, for example, a crystal oscillator as a time reference source, a semiconductor integrated circuit that generates a drive pulse for driving a clock based on the oscillation frequency of the crystal oscillator, In response to this drive pulse, the wheel train mechanism includes a step motor for driving the pointer every second, a wheel train mechanism for transmitting the movement of the step motor to the pointer, and the like.
A winding stem pipe 106 is fitted and fixed to the barrel 102, and a shaft 1071 of a crown 107 is rotatably inserted into the winding stem pipe 106.

The body 102 and the bezel 104 are fixed by a plastic packing 108, and the bezel 104 and the glass plate 105 are fixed by a plastic packing 109.
Further, a back cover 103 is fitted (or screwed) to the body 102, and a ring-shaped rubber packing (back cover packing) 114 is inserted in a compressed state at these joint portions (seal portions) 115. Has been. With this configuration, the seal portion 115 is liquid-tightly sealed, and a waterproof function is obtained.

  A groove 1072 is formed on the outer periphery of the shaft 1071 of the crown 107, and a ring-shaped rubber packing (crown packing) 113 is fitted in the groove 1072. The rubber packing 113 is in close contact with the inner peripheral surface of the winding stem pipe 106 and is compressed between the inner peripheral surface and the inner surface of the groove 1072. With this configuration, the space between the crown 107 and the winding stem pipe 106 is liquid-tightly sealed, and a waterproof function is obtained. When the crown 107 is rotated, the rubber packing 113 rotates together with the shaft portion 1071 and slides in the circumferential direction while being in close contact with the inner peripheral surface of the winding stem pipe 106.

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 manufacturing method of the present invention may include steps other than those described above. For example, you may have the process of forming a coating layer in the surface side in which the parameter | index of the board | substrate was provided, or the opposite surface side. As a result, for example, the color tone and the like can be adjusted to further improve the aesthetic appearance of the timepiece dial, or as a whole timepiece dial, the corrosion resistance, weather resistance, water resistance, oil resistance, scratch resistance, Various characteristics such as wear and discoloration resistance can be improved. Such a coat layer may be removed, for example, when a timepiece dial is used.

Moreover, the manufacturing method of this invention should just have two processes (a 1st screen printing process and a 2nd screen printing process) as a process of performing screen printing, for example, the process of performing screen printing. You may have 3 steps or more.
Moreover, in embodiment mentioned above, hardening of curable resin (1st curable resin) contained in a 1st composition, and curable resin (2nd curable property) contained in a 2nd composition. Although the case where the curing of the resin) is performed in a separate process has been representatively described, the first curable resin and the second curable resin may be cured in the same process.

  In the above-described embodiment, in the second screen printing step, the second composition is formed on the same surface side as the surface to which the first composition of the substrate 2 is applied (first composition (curing portion 32A). ) Above, it is described as being applied, for example, when the substrate 2 is made of a material having transparency, the opposite side of the surface of the substrate 2 to which the first composition has been applied. You may give a 2nd composition to the surface.

Further, in the configuration shown in the figure, the glossy powder contained in the composition (the first composition and the second composition) is composed of a base and a metal thin film. Between these, at least one intermediate layer may be provided. Further, the glossy powder may be substantially composed of only a metal material, for example.
In the above-described embodiment, the index is formed by applying the composition in a predetermined pattern to a part of the substrate. However, the composition may be applied to the entire surface of the substrate. Good. Further, the member formed by the method of the present invention may not function as an index.
In the above-described embodiment, the case where a substrate corresponding to the timepiece dial is used as the substrate for forming the index has been mainly described. However, a sheet-like member is used as the substrate for forming the index. After forming the sheet-like member, the sheet-like member may be processed into a timepiece dial by stamping or the like.

Next, specific examples of the present invention will be described.
1. Manufacture of timepiece dial (Example 1)
A timepiece dial was manufactured by the following method.
First, the board | plate which has the shape of the dial for timepieces was produced by press-molding the board | plate material comprised with the brass, and the necessary part was cut and grind | polished after that. The obtained substrate was substantially disc-shaped and had a diameter: 27 mm × thickness: 500 μm.

Next, this substrate was cleaned. As the cleaning of the substrate, first, alkaline immersion degreasing was performed for 30 seconds, then neutralization was performed for 10 seconds, washing with water for 10 seconds, and cleaning with pure water for 10 seconds.
A composition (first composition) containing a glossy resin and an uncured curable resin (ultraviolet curable resin) by screen printing on the surface of the substrate thus cleaned is shown in FIG. It was given in the shape and pattern as shown (first screen printing step). As a glossy powder constituting the composition, a metal layer composed of Al is formed on both surfaces of a sheet material (average thickness: 20 μm) composed of a polyester resin (PET) by vacuum deposition, and then A sheet material cut into a square shape was used. The average particle size of the glossy powder was 127 μm. In addition, the average thickness of the metal layers (metal thin films) provided on both surfaces of the sheet material made of the polyester resin was 0.5 μm. Moreover, all the Al content rates in the metal layer (metal thin film) provided on both surfaces of the sheet | seat material comprised with the polyester resin were 99.9 wt% or more. The viscosity of the composition used in this step at 25 ° C. was 17000 cps. Moreover, as a screen plate (first screen plate), a photolithography method using a mesh (first mesh) made of a wire (first wire) made of polytetrafluoroethylene and a photoresist material. And a plate film (first plate film) formed in a predetermined pattern, having a mesh roughness of No. 70 and a wire diameter of 60 μm. Further, the shape of the screen plate (first screen plate) in plan view is a rectangle, and the wires constituting the screen plate (first screen plate) are perpendicular or parallel to the long side direction of the rectangle. It was arranged in various directions. Moreover, as a squeegee, what was comprised with the urethane type rubber was used.

Next, the curable resin contained in the first composition is cured by irradiating ultraviolet rays from the surface side to which the composition (first composition) of the substrate is applied, and the cured portion (first (Cured part) was formed (first curing step).
Next, a composition containing a glossy resin and an uncured curable resin (ultraviolet curable resin) by screen printing on the surface side of the substrate where the cured portion (first cured portion) is formed (second curable resin). Was applied in a shape and pattern as shown in FIG. 5 (second screen printing step). As the second composition, the composition used in the first screen printing process (first composition) was used. Further, as a screen plate (second screen plate), a photolithography method using a mesh (second mesh) composed of a wire (second wire) made of polytetrafluoroethylene and a photoresist material. And a plate film (second plate film) formed in a predetermined pattern, having a mesh roughness of No. 70 and a wire diameter of 60 μm. The shape of the screen plate (second screen plate) in plan view is a rectangle, and the wire constituting the screen plate (second screen plate) has an axial direction in the long side direction of the rectangle. On the other hand, it was arranged in the direction of 45 °. Moreover, as a squeegee, what was comprised with the urethane type rubber was used.

Next, the curable resin contained in the second composition is cured by irradiating ultraviolet rays from the surface side to which the composition (second composition) of the substrate is applied, and a cured portion (second The cured portion) was formed, and an index was formed (second curing step). Thereby, a timepiece dial as shown in FIGS. 2 and 5 was obtained.
In the obtained timepiece dial, the average thickness of the index was 220 μm.
In addition, the thickness of the board | substrate, the parameter | index, etc. were measured in accordance with the microscope cross-section test method prescribed | regulated by JISH5821.

(Examples 2 to 11)
A first composition used in the first screen printing application step, a first screen plate,
A timepiece dial was manufactured in the same manner as in Example 1 except that the composition of the second composition and the second screen plate used in the second screen printing application step was changed as shown in Table 1.
(Comparative Example 1)
A timepiece dial was manufactured in the same manner as in Example 1 except that the second screen printing step and the second screen printing step were omitted.

(Comparative Example 2)
A watch dial was manufactured in the same manner as in Comparative Example 1 except that the diameter of the wire of the screen plate used for screen printing was changed to 30 μm.
(Comparative Example 3)
In the second screen printing process, using the screen plate used in the first screen printing process, the relative position of the wire with respect to the substrate in the first screen printing process and the relative position of the wire with respect to the substrate in the first screen printing process A timepiece dial was manufactured in the same manner as in Example 1 except that the actual positions were the same.

(Comparative Example 4)
A timepiece dial was manufactured by the following method.
First, the board | plate which has the shape of the dial for timepieces was produced by press-molding the board | plate material comprised with the brass, and the necessary part was cut and grind | polished after that. The obtained substrate was substantially disc-shaped and had a diameter: 27 mm × thickness: 500 μm.

Next, a through hole for attaching an index was formed in a portion of the substrate where an index should be provided. The diameter of the through hole was 500 μm.
Next, this substrate was cleaned. As the cleaning of the substrate, first, alkaline immersion degreasing was performed for 30 seconds, then neutralization was performed for 10 seconds, washing with water for 10 seconds, and cleaning with pure water for 10 seconds.
On the other hand, two types of index members (a first index member and a second index) each having a display portion to be placed on a base material and a foot portion for mounting by press-molding an aluminum plate material. Member). Regarding the first indicator member, the display portion had a width of 1.0 mm, a length of 2.0 mm, and a height of 140 μm. Further, regarding the first index member, the foot length was 500 μm and the foot diameter (thickness) was 200 μm. Moreover, the width | variety of the display part about the 2nd indicator member was 1.5 mm, length was 3.5 mm, and height was 140 micrometers. Further, regarding the second indicator member, the foot length was 500 μm and the foot diameter (thickness) was 200 μm.

Next, by inserting the foot part of the index member (planting material) into the through hole of the base material, and by applying an epoxy adhesive from the side opposite to the surface where the index member is inserted, The indicator member was fixed to the substrate. As a result, a timepiece dial was obtained.
Table 1 summarizes the conditions, etc. of the substrate, the first composition, the first screen plate, the second composition, and the second screen plate used in the production of the timepiece dial in each example and each comparative example. Show. In the table, brass is BS, stainless steel (SUS304) is SUS, bronze is PB, carbon black-containing polycarbonate is PC, carbon black-containing acrylonitrile-butadiene-styrene copolymer (ABS resin) is ABS, Polyethylene terephthalate containing carbon black is represented by PET, acrylic resin containing carbon black is represented by PMMA, polyethylene resin is represented by PE, polytetrafluoroethylene is represented by PTFE, and polyester resin is represented by PEs. In the table, the viscosity column shows the value of the viscosity at 25 ° C. In addition, the content rate of the material shown in Table 1 in each site | part of the timepiece dial was all 99 wt% or more. Also, in the table, the column “Relative position of the wire relative to the substrate” for “Relationship between the first screen plate and the second screen plate” includes the first wire in the first screen printing step. The case where the relative position with respect to the substrate and the relative position of the second wire with respect to the substrate in the second screen printing process are the same is indicated by “same”, and the first position in the first screen printing process The case where the relative position of the wire with respect to the substrate and the relative position of the second wire with respect to the substrate in the second screen printing process are different is indicated as “different”. In the table, the column “shape and size of plate film” for “relation between the first screen plate and the second screen plate” includes the first plate film and the second plate film. When the shape and size are the same, the same shape and size are indicated as “same”, and when the shape and size are different between the first plate film and the second plate film, “different”. Indicated. In the table, the column “Relative position of the plate film with respect to the substrate” for “Relationship between the first screen plate and the second screen plate” includes the first plate in the first screen printing step. When the relative position of the film with respect to the substrate and the relative position of the second plate film with respect to the substrate in the second screen printing step are substantially the same (the first screen plate and the second screen plate) And the area ratio of the region of the first plate film that overlaps the second plate film, and the area ratio of the region of the second plate film that overlaps the first plate film In the case of 99.9% or more), “the same” indicates the relative position of the first plate film with respect to the substrate in the first screen printing step, and the second screen printing step. The relative position of the two plates relative to the substrate; When different (the first screen plate and the second screen plate are overlapped and viewed in plan, the area ratio of the region of the first plate film overlapping the second plate film, Among them, the case where at least one of the area ratios of the regions overlapping with the first printing film is 97% or more and less than 98% is indicated as “different”. Further, in Table 1, the first wire in the case where the first screen plate, the second screen plate, and the substrate are overlapped with each other so as to perform the desired printing on the substrate. The value of the angle θ formed by the axial direction and the axial direction of the second wire is also shown.

2. Productivity evaluation of timepiece dials For each of the above examples and comparative examples, by repeatedly performing the above-described method, an attempt was made to produce 100 timepiece dials. Evaluation was performed according to the following three-stage criteria.
A: Excellent in productivity.
B: Productivity is slightly inferior.
C: Productivity is inferior.

3. 3. External appearance evaluation of timepiece dial 3-1. Glossiness Evaluation Each watch dial plate manufactured in each of the above Examples and Comparative Examples was visually and microscopically observed, and the appearance was evaluated according to the following five criteria.
A: An extremely excellent glossiness is exhibited.
B: Exhibits excellent gloss.
C: Good glossiness is exhibited.
D: Glossiness is slightly inferior.
E: The glossiness is inferior.

3-2. Stereoscopic evaluation Each watch dial plate manufactured in each of the above examples and comparative examples was visually observed, and these stereoscopic effects were evaluated according to the following five-stage criteria.
A: Extremely excellent.
B: Excellent.
C: Good.
D: Somewhat bad.
E: Defect.

3-3. Comprehensive Appearance Evaluation Each watch dial plate manufactured in each of the above Examples and Comparative Examples was visually and observed with a microscope, and the appearance was evaluated according to the following five criteria.
A: Extremely excellent.
B: Excellent.
C: Good.
D: Somewhat bad.
E: Defect.

4). Durability Evaluation Each timepiece dial manufactured in each of the above examples and comparative examples was subjected to the following three types of tests to evaluate the durability of the timepiece dial.
4-1. Evaluation by drop test About each timepiece dial produced in each of the above Examples and Comparative Examples, after being dropped 100 times repeatedly from a height of 3.5 m onto a stainless steel 12 cm thick block, The appearance of the timepiece dial was visually observed, and the appearance was evaluated according to the following four-stage criteria.
A: No lifting or peeling of the index is observed.
B: Almost no floating or peeling of the index is observed.
C: Slight lifting or peeling of the index is observed.
D: Detachment of glossy powder, or floating or peeling of the index is clearly recognized.

4-2. Evaluation by Bending Test For each timepiece dial manufactured in each of the above examples and comparative examples, a steel bar with a diameter of 3.2 mm is used as a fulcrum and bent at 35 ° with respect to the center of the timepiece dial. After that, the appearance of the timepiece dial was visually observed and evaluated according to the following four criteria. Bending was performed in both compression / tension directions.
A: No lifting or peeling of the index is observed.
B: Almost no floating or peeling of the index is observed.
C: Slight lifting or peeling of the index is observed.
D: Detachment of glossy powder, or floating or peeling of the index is clearly recognized.

4-3. Evaluation by Thermal Cycle Test Each timepiece dial produced in each of the above Examples and Comparative Examples was subjected to the following thermal cycle test.
First, the timepiece dial is placed in a 20 ° C environment for 1 hour, then in a 50 ° C environment for 1 hour, then in a 20 ° C environment for 1 hour, and then in a -20 ° C environment for 1 hour. Left to stand. Thereafter, the environmental temperature was returned again to 20 ° C., which was set to one cycle (4 hours), and this cycle was repeated a total of 6 times (total 24 hours).

Thereafter, the appearance of the timepiece dial was visually observed, and the appearance was evaluated according to the following four-stage criteria.
A: No lifting or peeling of the index is observed.
B: Almost no floating or peeling of the index is observed.
C: Slight lifting or peeling of the index is observed.
D: Detachment of glossy powder, or floating or peeling of the index is clearly recognized.
These results are shown in Table 2.

As is clear from Table 2, the timepiece dial of the present invention exhibited a glossy and excellent aesthetic appearance and was also excellent in durability. In addition, in the present invention, a timepiece dial having an excellent three-dimensional effect of the index was obtained. In particular, according to the present invention, a timepiece dial having an excellent aesthetic appearance in which no bleeding or the like is observed is obtained. In the present invention, the timepiece dial is also excellent in productivity.
On the other hand, in the comparative example, a satisfactory result was not obtained.
Moreover, the timepiece as shown in FIG. 6 was assembled using the timepiece dials obtained in each of the examples and the comparative examples. Each timepiece thus obtained was tested and evaluated in the same manner as described above, and the same results as described above were obtained.

  DESCRIPTION OF SYMBOLS 1 ... Timepiece dial 2 ... Substrate (Dial plate main body) 3 ... Index 31 ... Glossy powder 31A ... Glossy powder 31B ... Glossy powder 311 ... Base part 311A ... Base part 311B ... Base part 312 ... Metal thin film 312A ... Metal thin film 312B ... metal thin film 32 ... cured part 32A ... cured part (first cured part) 32B ... cured part (second cured part) 32 '... curable resin 32A' ... curable resin (first curable resin) 32B '... Curable resin (second curable resin) 7 ... Screen plate (first screen plate) 71 ... Mesh (first mesh) 711 ... Wire (first wire) 72 ... Plate film (first 8) Screen plate (second screen plate) 81 ... Mesh (second mesh) 811 ... Wire (second wire) 82 ... Plate film (second plate film) 9 ... Squeegee 1 DESCRIPTION OF SYMBOLS 1 ... Movement 102 ... Body (case) 103 ... Back cover 104 ... Bezel (edge) 105 ... Glass plate (cover glass) 106 ... Winding pipe 107 ... Crown 1071 ... Shaft part 1072 ... Groove 108 ... Plastic packing 109 ... Plastic Packing 113 ... Rubber packing (Crown packing) 114 ... Rubber packing (back cover packing) 115 ... Joint part (seal part) 100 ... Wristwatch (portable watch)

Claims (7)

A watch dial having a substrate and an index,
The indicator is
A first composition comprising a first glossy powder and a first curable resin provided on the surface of the substrate;
Wherein provided on a surface of the first composition, it possesses a second composition comprising a second gloss powder and second curable resin, a,
The first glossy powder and the second glossy powder are formed of a base formed of plastic and a metal thin film,
The average thickness of the first glossy powder and the second glossy powder is 10 μm or more and 30 μm or less,
The average particle size of the first glossy powder and the second glossy powder is 100 μm or more and 155 μm or less,
The average thickness of the base is 7 μm or more and 29.9 μm or less,
A timepiece dial having an average thickness of the metal thin film of 0.01 μm or more and 3.0 μm or less . The substrate according Fe, Cu, Zn, Ni, Mg, Cr, Mn, Mo, Nb, Al, V, Zr, Sn, Au, Pd, Pt, to claim 1, which is an alloy containing at least one Ag Watch dial. The timepiece dial according to claim 1, wherein the substrate is one of plastic, ceramics, stone, and wood. The metal thin film is Fe, Cu, Zn, Ni, Mg, Cr, Mn, Mo, Nb, Al, V, Zr, Sn, Au, Pd, Pt, claims 1 an alloy containing at least one Ag 4. The timepiece dial described in any one of 3 above. The indicator characters and numerals, scales, symbol, timepiece dial according to any one of claims 1 a mark 4.   6. The timepiece dial according to claim 1, wherein an average thickness of the indicator is 15 μm or more and 400 μm or less. A timepiece comprising the timepiece dial according to any one of claims 1 to 6 .

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