Timepiece dial and timepiece

Abstract

The invention provides a timepiece dial and a timepiece which are diversified and highly aesthetic. The timepiece dial includes: a translucent substrate; a front-surface gradient coloring film formed by gradually coloring a front-surface coloring material on the front surface of the light-transmitting substrate; and a reverse-surface gradient coloring film formed by coloring a reverse-surface coloring material on the reverse surface of the light-transmitting substrate in a gradient manner. The front gradually-changing colored film and the back gradually-changing colored film are formed in a gradually-changing coloring manner in which the concentration of the colored color changes, so that various and highly aesthetic timepiece dials can be provided.

Description

Technical Field

[0001] The present invention relates to a dial for a timepiece and a timepiece having the dial. Background Art

[0002] Patent Document 1 discloses a dial of a watch having a support and a mother-of-pearl sheet. The mother-of-pearl sheet has a front surface and a rear surface facing the support and having a pattern printed thereon. The mother-of-pearl sheet is formed to have a thickness dimension such that the pattern printed on the rear surface of the mother-of-pearl sheet can be seen through the mother-of-pearl under normal lighting conditions.

[0003] Patent Document 1: Japanese Patent Application No. 2021-510820

[0004] The dial of Patent Document 1 is a dial having a pattern printed on the rear surface of a mother-of-pearl sheet as a base by screen printing, photolithography, inkjet printing, etc. Therefore, although a watch dial that effectively utilizes the pattern of the mother-of-pearl sheet can be realized, more diverse watch dials and watches with high aesthetics are sought. Summary of the invention

[0005] The watch dial disclosed in the present invention comprises: a translucent substrate; a front gradient coloring film formed by gradiently coloring a front coloring material on the front side of the translucent substrate; and a back gradient coloring film formed by gradiently coloring a back coloring material on the back side of the translucent substrate.

[0006] A timepiece disclosed herein includes the timepiece dial. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is a front view showing a timepiece having the timepiece dial according to the first embodiment.

[0008] Figure 2 It is a cross-sectional view showing the timepiece dial according to the first embodiment.

[0009] Figure 3 This is an exploded view showing the layer structure of the timepiece dial according to the first embodiment.

[0010] Figure 4 It is an exploded perspective view showing the layer structure of the timepiece dial according to the first embodiment.

[0011] Figure 5 It is a cross-sectional view showing a timepiece dial according to a second embodiment.

[0012] Figure 6 It is an exploded perspective view showing the layer structure of the timepiece dial according to the second embodiment.

[0013] Figure 7 It is a cross-sectional view showing a timepiece dial according to a third embodiment.

[0014] Figure 8 It is an exploded perspective view showing the layer structure of the timepiece dial according to the third embodiment.

[0015] Fig. 9 It is a cross-sectional view showing a timepiece dial according to a fourth embodiment.

[0016] Description of symbols

[0017] 1: watch; 2: outer shell; 3: watch dial; 3B: watch dial; 3C: watch dial; 3D: watch dial; 4A: hour hand; 4B: minute hand; 4C: second hand; 5: logo; 10: front gradient color film; 10B: front gradient color film; 10C: front gradient color film; 10D: front gradient color film; 20: light-transmitting substrate; 20B: light-transmitting substrate; 20C: light-transmitting substrate; 20D: light-transmitting substrate; 21: front; 22: back; 23: through hole; 30: back gradient color film; 30B: back gradient color film Color film; 30C: reverse gradient color film; 30D: reverse gradient color film; 40: substrate color film; 40B: substrate color film; 40D: substrate color film; 50: substrate; 50B: substrate; 51: front side; 53: through hole; 61: first area; 61B: first area; 61C: first area; 61D: first area; 62: second area; 62B: second area; 62C: second area; 62D: second area; 63: third area; 63B: third area; 63C: third area; 63D: third area; 64D: fourth area. DETAILED DESCRIPTION

[0018] [First embodiment]

[0019] Figure 1 1 is a front view showing a watch 1 having a watch dial 3 according to a first embodiment. The watch 1 is a wristwatch worn on a user's wrist, and has a cylindrical outer case 2, on the inner circumference of which a watch dial 3 is arranged. Of the two openings of the outer case 2, the opening on the front side is closed by a glass cover, and the opening on the back side is closed by a back cover. In addition, the watch 1 has: a movement not shown in the figure, which is housed in the outer case 2; an hour hand 4A, a minute hand 4B, and a second hand 4C, which are pointers indicating time information; a mark 5, which is mounted on the watch dial 3; and a crown 7. The mark 5 of the watch 1 according to this embodiment uses Roman numerals, but Arabic numerals may also be used, or it may be composed of a mark bar, and the type of mark is not limited to Roman numerals.

[0020] In the following description, the top view refers to observing the watch dial 3 from a direction perpendicular to the front of the watch dial 3, that is, the axial direction of the pointer shaft on which the pointer is installed. In addition, the front of each component refers to the surface on the glass cover side, and the back of each component refers to the surface on the back cover side.

[0021] like Figures 2 to 4 As shown, the watch dial 3 is constructed by stacking a front gradient color film 10, a translucent substrate 20, a back gradient color film 30, a base color film 40 and a substrate 50 in sequence from the front side of the watch 1, i.e., the glass cover side, toward the back side of the watch 1, i.e., the back cover side.

[0022] The light-transmitting substrate 20 is a substrate made of a semi-transmitting material having light transmittance, i.e., transmitting visible light. Therefore, the light-transmitting substrate 20 only needs to be a substrate that can be visually viewed from the front side to the back side. In the present embodiment, it is composed of a mother-of-pearl sheet. A mother-of-pearl sheet is a plate-shaped component formed by slicing the shell of a mother-of-pearl oyster such as a white mother-of-pearl oyster used for pearl cultivation. In the present embodiment, the light-transmitting substrate 20 is composed of a thin mother-of-pearl sheet with a thickness of about 50 μm to 200 μm. In particular, from the viewpoint of easy handling and ensuring light transmittance, the light-transmitting substrate 20 composed of a mother-of-pearl sheet is preferably a thickness of about 100 μm.

[0023] The light-transmitting substrate 20 is formed in a planar circular plate shape, and a through hole 23 through which the pointer shaft is inserted is formed at the center of the planar surface.

[0024] The front gradation coloring film 10 is formed by applying a front coloring material to the front surface 21 of the light-transmitting substrate 20 in a gradation-colored manner by coating or printing.

[0025] Gradient coloring refers to coloring by applying or printing a front coloring material so that the concentration changes continuously or stepwise. Specifically, the coloring density of the coloring material is changed by increasing or decreasing the amount of the front coloring material applied or printed per unit area, thereby changing the concentration of the color after coloring continuously or stepwise.

[0026] For example, in the case of realizing gradual coloring by coating, the translucent substrate 20 is placed on a rotating table and rotated, and a coating as a front coloring material is applied to the front 21 of the translucent substrate 20 using a spray gun, thereby coloring. At this time, when the center of the spray direction of the coating sprayed from the nozzle of the spray gun is directed toward the periphery of the translucent substrate 20 rotating around the through hole 23, the density of the coating at the outer periphery of the translucent substrate 20 becomes higher and the coloring becomes thicker. On the other hand, as it approaches the inner periphery of the translucent substrate 20, the density of the coating becomes lower and the coloring becomes lighter. Therefore, by coating, it is possible to realize a concentric coloring with the through hole 23 as the center and the color becoming lighter as it approaches the inner side from the periphery of the translucent substrate 20. In addition, the range of forming the front gradual coloring film 10 can be changed by adjusting the throttling amount of the nozzle of the spray gun. That is, if the nozzle of the spray gun is reduced to reduce the spray range of the paint, the formation range of the front gradient color film 10 becomes narrower, and if the nozzle of the spray gun is expanded to expand the spray range of the paint, the formation range of the front gradient color film 10 can be expanded. In the present embodiment, the outer peripheral edge 11 of the front gradient color film 10 is located at the same position as the outer peripheral edge 24 of the translucent substrate 20 when viewed from above, and the inner peripheral edge 12 is located at a position outside the middle position in the radial direction from the through hole 23 to the outer periphery of the translucent substrate 20, that is, the position of 1 / 2 of the radius. Therefore, on the front side 21 of the translucent substrate 20, the front gradient color film 10 is provided at a position outside the middle position in the radial direction.

[0027] The back surface gradient coloring film 30 is formed by applying or printing a back surface coloring material to the back surface 22 of the translucent substrate 20. In the present embodiment, similarly to the front surface gradient coloring film 10, the translucent substrate 20 is placed on a rotating table and rotated, and a coating as a back surface coloring material is applied to the back surface 22 of the translucent substrate 20 using a spray gun, thereby coloring. In the present embodiment, the outer peripheral edge 31 of the back surface gradient coloring film 30 is located at the same position as the outer peripheral edge 24 of the translucent substrate 20 when viewed from above, and the inner peripheral edge 32 is located at a position inside the middle position in the radial direction from the through hole 23 to the outer periphery of the translucent substrate 20, that is, the position of 1 / 2 of the radius. Specifically, the back surface gradient coloring film 30 is formed between the outer peripheral edge 24 of the back surface 22 of the light-transmitting substrate 20 and a position approximately 3 / 4 of the radius from the outer peripheral edge 24 in the radial direction, and is formed in a concentric circle shape centered on the through hole 23 and with a gradient coloring that becomes lighter as it moves from the outer periphery of the light-transmitting substrate 20 to the inner side. On the back surface 22 of the light-transmitting substrate 20, the area where the back surface gradient coloring film 30 is not provided is located inwardly of the middle position in the radial direction, and the back surface gradient coloring film 30 is provided in the range from the position inwardly of the middle position to the outer peripheral edge 24.

[0028] As described above, the front gradation colored film 10 and the back gradation colored film 30 are colored in a concentric circle shape with the through hole 23 as the center, and the color on the outer periphery is darker and becomes lighter as it approaches the inner periphery. Figure 2 as well as Figure 3 In the cross-sectional view, the film thickness of the portion with darker colors of the front gradient color film 10 and the back gradient color film 30, that is, the outer peripheral side of the translucent substrate 20, is increased, and the film thickness gradually becomes thinner as it approaches the inner peripheral side, thereby schematically showing that the colors of the front gradient color film 10 and the back gradient color film 30 gradually become lighter as they approach the inner peripheral side from the outer peripheral side. Therefore, in the actual watch dial 3, the film thickness of the front gradient color film 10 and the back gradient color film 30 is roughly the same in the radial direction of the watch dial 3, or the outer peripheral side is slightly thicker, and there is no thickness change to the extent that can be distinguished by visual observation. In addition, since the film thickness of the front gradient color film 10 and the back gradient color film 30 is small, when the watch dial 3 is visually viewed from the front side, especially on the inner peripheral side with lighter colors, it can be affected by the back gradient color film 30 and the base color film 40 stacked on the back side, thereby realizing a complex and fine appearance design. In addition, the film thickness of the front gradient color film 10 and the back gradient color film 30 is less than 10μm, i.e., several μm, in the dark color part, and gradually decreases from several μm to 0μm as it moves from the dark color part to the light color part. This is also the same in other embodiments described later.

[0029] The base coloring film 40 is formed by coating or printing a base coloring material on the back surface 22 of the light-transmitting substrate 20 and the back surface of the back surface gradient coloring film 30. The base coloring film 40 is a film colored with a single color having a substantially constant color concentration, and is different from the front surface gradient coloring film 10 and the back surface gradient coloring film 30 in that the color concentration does not change.

[0030] The base coloring film 40 is formed in the region from the through hole 23 to the outer peripheral edge 24 of the light-transmitting substrate 20. Therefore, in the region where the reverse gradation coloring film 30 is formed, the base coloring film 40 is laminated on the reverse side of the reverse gradation coloring film 30. That is, the reverse gradation coloring film 30 is formed between the light-transmitting substrate 20 and the base coloring film 40.

[0031] When printing the front gradation coloring film 10, the back gradation coloring film 30, and the base coloring film 40, coloring may be performed by inkjet printing using respective inks for the front coloring material, the back coloring material, and the base coloring material.

[0032] The base material 50 is a disk-shaped plate material made of metal or synthetic resin, and is provided to ensure the strength of the timepiece dial 3. A through hole 53 is formed at the center of the plane of the base material 50, through which the pointer shaft is inserted.

[0033] The front surface 51 of the substrate 50 is bonded to the base color film 40 by an adhesive. For example, the adhesive may be applied to the front surface 51 of the substrate 50 by screen printing or spraying. Alternatively, the substrate 50 may be bonded by using a double-sided tape instead of an adhesive.

[0034] The colors of the front gradient coloring film 10, the back gradient coloring film 30, and the base coloring film 40 may be appropriately set according to the design of the watch dial 3. For example, by setting the front coloring material to black, the back coloring material to light blue, and the base coloring material to blue, or setting the front coloring material to dark blue, the back coloring material to pink, and the base coloring material to purple, or setting the front coloring material to dark green, the back coloring material to yellow-green, and the base coloring material to green, a sense of seasons can be obtained, and a watch dial 3 with high aesthetics can be realized.

[0035] The watch dial 3 has the above layer structure, so if Figure 2 and Figure 3 As shown, when the timepiece 1 is viewed from the front side, an annular first region 61 is provided around the through holes 23, 53, where the light-transmitting substrate 20 and the base coloring film 40 are stacked. In addition, when viewed from the top, an annular second region 62 is provided around the first region 61, where the light-transmitting substrate 20, the back gradient coloring film 30, and the base coloring film 40 are stacked. Furthermore, when viewed from the top, an annular third region 63 is provided around the second region 62, where the front gradient coloring film 10, the light-transmitting substrate 20, the back gradient coloring film 30, and the base coloring film 40 are stacked.

[0036] The watch dial 3 of the present embodiment forms a front gradient coloring film 10 on the front side 21 of the translucent substrate 20, and sequentially forms a back gradient coloring film 30 and a base coloring film 40 on the back side 22 of the translucent substrate 20, and a base material 50 is bonded to the back side of the base coloring film 40, and the stacking order is not particularly limited.

[0037] The timepiece dial 3 of this embodiment has three regions, namely, a first region 61 , a second region 62 , and a third region 63 in a plan view. The regions 61 to 63 have different layer structures, thereby improving the design and aesthetics of the timepiece dial 3 .

[0038] The first region 61 has a layer structure in which the base coloring film 40 is formed on the reverse side of the light-transmitting substrate 20 made of mother-of-pearl sheets. Therefore, the pattern of the mother-of-pearl sheets can be effectively utilized and a design with the coloring of the base coloring film 40 superimposed can be realized.

[0039] The second region 62 has a layer structure in which the back-side gradation coloring film 30 and the base coloring film 40 are laminated on the back side of the translucent substrate 20 composed of mother-of-pearl sheets, so that the pattern of the mother-of-pearl sheets can be effectively utilized, and a fine design can be realized in which the color shade changes caused by the gradation coloring of the back-side gradation coloring film 30 overlap with the coloring of the base coloring film 40. The third region 63 has a layer structure in which the front-side gradation coloring film 10 is laminated on the front side of the translucent substrate 20 composed of mother-of-pearl sheets, and the back-side gradation coloring film 30 and the base coloring film 40 are laminated on the back side, so that the pattern of the mother-of-pearl sheets can be effectively utilized, and a fine design can be realized in which the color shade changes caused by the gradation coloring of the front-side gradation coloring film 10 and the back-side gradation coloring film 30 overlap with the coloring of the base coloring film 40.

[0040] This can improve the aesthetics of the timepiece dial 3 .

[0041] Since the base coloring film 40 is formed on the front side of the base 50, the base 50 is not visible through the light-transmitting substrate 20. Therefore, the design of the timepiece dial 3 can be prevented from being blocked by the base 50, and the base 50 can be provided to ensure both strength and design.

[0042] The front gradation color film 10 and the back gradation color film 30 are gradation colored in which the color is dark on the outer peripheral side and becomes lighter toward the inner peripheral side, and thus a fine and aesthetically pleasing design can be realized.

[0043] [Second embodiment]

[0044] Reference Figure 5 and Figure 6 A timepiece dial 3B according to the second embodiment will be described.

[0045] The timepiece dial 3B includes a front gradation colored film 10B, a light-transmitting substrate 20B, a back gradation colored film 30B, a base colored film 40B, and a substrate 50B. The light-transmitting substrate 20B, the base colored film 40B, and the substrate 50B have the same structure as the first embodiment, and thus description thereof is omitted.

[0046] The front gradient coloring film 10B is formed by gradiently coloring the front coloring material on the front surface 21 of the light-transmitting substrate 20B by inkjet printing. In the present embodiment, the inner peripheral edge 12 of the front gradient coloring film 10B is located along the through hole 23 of the light-transmitting substrate 20B when viewed from above, and the outer peripheral edge 11 of the front gradient coloring film 10B is located inside the radial middle position from the through hole 23 to the outer periphery of the light-transmitting substrate 20B, that is, the position of 1 / 2 of the radius when viewed from above.

[0047] The back surface gradient coloring film 30B is formed by gradiently coloring the back surface coloring material on the back surface 22 of the translucent substrate 20B by inkjet printing. In the present embodiment, the inner peripheral edge 32 of the back surface gradient coloring film 30B is located along the through hole 23 of the translucent substrate 20B when viewed from above, and the outer peripheral edge 31 of the back surface gradient coloring film 30B is formed to a position approximately 3 / 4 of the radial direction from the through hole 23 to the outer periphery of the translucent substrate 20B when viewed from above. Therefore, the outer peripheral edge 31 of the back surface gradient coloring film 30B is arranged at a position further outward than the outer peripheral edge 11 of the front surface gradient coloring film 10B.

[0048] The front gradation colored film 10B and the back gradation colored film 30B are colored in a concentric circle centered at the through hole 23, with the color on the inner side being darker and the color becoming lighter as it approaches the outer side. Figure 5 In the cross-sectional view, Figure 2 Similarly, by increasing the film thickness of the darker colored portion of the front gradient colored film 10B and the back gradient colored film 30B, that is, the central portion of the translucent substrate 20B along the through hole 23, the film thickness is gradually reduced toward the outer peripheral side, thereby schematically showing that the colors of the front gradient colored film 10B and the back gradient colored film 30B gradually become lighter from the inner peripheral side to the outer peripheral side.

[0049] The colors of the front gradation colored film 10B, the back gradation colored film 30B, and the base colored film 40B may be appropriately set according to the design of the timepiece dial 3B, similarly to the first embodiment.

[0050] According to the watch dial 3B of this embodiment, there are three areas, namely the first area 61B, the second area 62B, and the third area 63B from the center side to the outer side when viewed from above. These areas 61B~63B have different layer structures, so the design of the watch dial 3B can be improved.

[0051] The first area 61B has a layer structure in which a front gradient colored film 10B is stacked on the front side 21 of a translucent substrate 20B composed of mother-of-pearl sheets, and a back gradient colored film 30B and a base colored film 40B are stacked on the back side 22. Therefore, the pattern of the mother-of-pearl sheets can be effectively utilized, and a fine appearance design can be achieved in which the changes in color depth caused by the gradient coloring of the front gradient colored film 10B and the back gradient colored film 30B overlap with the coloring of the base colored film 40B.

[0052] The second area 62B has a layer structure in which a reverse gradient coloring film 30B and a base coloring film 40B are stacked on the reverse side 22 of a light-transmitting substrate 20B composed of mother-of-pearl sheets. Therefore, the pattern of the mother-of-pearl sheets can be effectively utilized, and a fine appearance design in which the changes in color depth and lightness overlap with the coloring of the base coloring film 40B can be achieved through the gradient coloring of the reverse gradient coloring film 30B.

[0053] The third region 63B has a layer structure in which the base coloring film 40B is formed on the back surface 22 of the light-transmitting substrate 20B made of mother-of-pearl sheets. Therefore, the pattern of the mother-of-pearl sheets can be effectively utilized and a design with the coloring of the base coloring film 40 superimposed can be realized.

[0054] This can improve the aesthetics of the timepiece dial 3B.

[0055] [Third Embodiment]

[0056] Reference Figure 7 and Figure 8 A timepiece dial 3C according to the third embodiment will be described.

[0057] The timepiece dial 3C is a flat rectangular dial, and includes a front gradation colored film 10C, a light-transmitting substrate 20C, and a back gradation colored film 30C.

[0058] The light-transmitting substrate 20C is made of a light-transmitting flat rectangular synthetic resin plate such as polycarbonate.

[0059] The front gradation colored film 10C is formed by applying gradation coloring of a front coloring material to the front surface 21 of a light-transmitting substrate 20C by inkjet printing. In this embodiment, the front gradation colored film 10C is formed in a straight line extending in a direction connecting the not-shown marks 12 o'clock and 6 o'clock of the timepiece dial 3C.

[0060] The width dimension of the front gradient color film 10C, i.e., the dimension at 3 o'clock and 9 o'clock of the watch dial 3C is constant. In this embodiment, it is approximately 1 / 2 of the dimension from the central through hole 23 of the translucent substrate 20C to the outer periphery at 3 o'clock and 9 o'clock.

[0061] The back surface gradient coloring film 30C is formed by gradiently coloring the back surface coloring material on the back surface 22 of the light-transmitting substrate 20C by inkjet printing. In this embodiment, the back surface gradient coloring film 30C is formed into a straight line extending in the direction connecting the 12 o'clock and 6 o'clock marks (not shown) of the watch dial 3C, similarly to the front surface gradient coloring film 10C.

[0062] The width dimension of the back surface gradient color film 30C, that is, the dimension of the watch dial 3C in the 3 o'clock and 9 o'clock directions, is constant and is approximately 3 / 4 of the dimension from the through hole 23 in the center of the light-transmitting substrate 20C to the outer periphery in the 3 o'clock and 9 o'clock directions. Therefore, the width dimension of the back surface gradient color film 30C is larger than the width dimension of the front surface gradient color film 10C.

[0063] The front gradation color film 10C and the back gradation color film 30C are colored in a gradation manner in which the color at the center connecting the 12 o'clock and 6 o'clock directions is dark and the color becomes lighter as it approaches the 3 o'clock and 9 o'clock directions. Figure 7 In the cross-sectional view, the front gradient colored film 10C and the back gradient colored film 30C are schematically shown as the color of the front gradient colored film 10C and the back gradient colored film 30C gradually becomes lighter from the center side to the peripheral side by increasing the film thickness of the center part connecting the 12 o'clock and 6 o'clock directions of the watch dial 3C, that is, the center part of the translucent substrate 20C passing through the through hole 23, and gradually becoming thinner toward the periphery in the 3 o'clock and 9 o'clock directions.

[0064] According to the watch dial 3C of the present embodiment, when viewed from above, there are three areas, namely, a first area 61C, a second area 62C, and a third area 63C, from the center side of the markings connecting 12 o'clock and 6 o'clock toward the 3 o'clock and 9 o'clock sides. The layer structures of these areas 61C to 63C are different, thereby improving the design of the watch dial 3C.

[0065] The first area 61C on the center side of the watch dial 3C has a layer structure in which a front gradient coloring film 10C is stacked on the front side 21 of a translucent substrate 20C and a back gradient coloring film 30C is stacked on the back side 22. Therefore, a fine appearance design can be achieved by overlapping the color changes caused by the gradient coloring of the front gradient coloring film 10C and the back gradient coloring film 30C.

[0066] The second region 62C has a layer structure in which a back surface gradation coloring film 30C is laminated on the back surface 22 of a light-transmitting substrate 20C. Therefore, it is possible to realize a design in which the color shades change by gradation coloring of the back surface gradation coloring film 30C.

[0067] The third region 63C can realize an appearance design that effectively utilizes the light-transmitting substrate 20C. In addition, the third region 63C does not have the front gradient color film 10C and the back gradient color film 30C stacked, so the light transmittance can be improved. Therefore, in particular, when a timepiece is realized in which a solar panel is arranged on the back of the timepiece dial 3C, the power generation efficiency can be improved.

[0068] [Fourth Embodiment]

[0069] Reference Fig. 9A timepiece dial 3D according to a fourth embodiment will be described.

[0070] The watch dial 3D is a disc-shaped dial having a front gradation color film 10D, a light-transmitting substrate 20D, a back gradation color film 30D, a base color film 40D, and a substrate 50D. The light-transmitting substrate 20D, the base color film 40D, and the substrate 50D have the same structure as those in the first and second embodiments, and therefore description thereof is omitted.

[0071] The front gradient coloring film 10D is formed by gradient coloring the front coloring material on the front surface of the light-transmitting substrate 20D by inkjet printing. In the present embodiment, the front gradient coloring film 10D is an ellipse in a plan view, the center of which is arranged at a position offset in the 3 o'clock direction relative to the through hole 23, and is colored in a gradient manner with the darkest color on the 3 o'clock side and the color becoming lighter as it approaches the 9 o'clock side.

[0072] The back surface gradient coloring film 30D is formed by gradient coloring the back surface coloring material on the back surface of the light-transmitting substrate 20D by inkjet printing. In the present embodiment, the back surface gradient coloring film 30D is an elliptical shape when viewed from above, and its center is arranged at a position offset in the 9 o'clock direction relative to the through hole 23, and is colored in a gradient manner with the darkest color on the 9 o'clock side and the color becoming lighter as it approaches the 3 o'clock side.

[0073] exist Fig. 9 In FIG. 1 , similar to the cross-sectional views of the above-described embodiments, the color gradually becomes lighter by increasing the film thickness of the darker color portions of the front gradation color film 10D and the back gradation color film 30D and then gradually decreasing the film thickness.

[0074] In the timepiece dial 3D of the fourth embodiment, the colors of the front gradation colored film 10D, the back gradation colored film 30D, and the base colored film 40D may be appropriately set according to the design of the timepiece dial 3D as in the respective embodiments.

[0075] In the watch dial 3D of the fourth embodiment, when viewed from above, the front gradation coloring film 10D and the back gradation coloring film 30D have regions where they overlap each other on the center side of the watch dial 3D and do not overlap each other on the outer peripheral side. That is, the watch dial 3D has: a first region 61D where the front gradation coloring film 10D, the back gradation coloring film 30D, and the base gradation coloring film 40D overlap when viewed from above; a second region 62D where the back gradation coloring film 30D and the base gradation coloring film 40D overlap when viewed from above, and the front gradation coloring film 10D does not overlap; a third region 63D where the front gradation coloring film 10D and the base gradation coloring film 40 overlap when viewed from above, and the back gradation coloring film 30D does not overlap; and a fourth region 64D where only the base gradation coloring film 40D overlaps with the light-transmitting substrate 20D, and the front gradation coloring film 10D and the back gradation coloring film 30D do not overlap. Since the layer structures of the regions 61D to 64D are different from each other, the design of the timepiece dial 3D can be improved.

[0076] [Modifications]

[0077] The structure of the timepiece dial is not limited to the above-described embodiments.

[0078] For example, each watch dial is not limited to having only the above-mentioned layer structure, and a protective film or an anti-reflection film may be added to the front surface of the light-transmitting substrate, i.e., the surface on which the front gradient color film is formed. In addition, the light-transmitting substrate is not limited to mother-of-pearl or polycarbonate, and any light-transmitting substrate may be used as long as it is made of a light-transmitting material, and the back gradient color film may pass through the light-transmitting substrate to affect the appearance design of the watch dial.

[0079] The front surface gradation color film and the back surface gradation color film are not limited to the ones in which the color concentration changes continuously, and the color concentration may change discontinuously, that is, in stages.

[0080] The base color film may be formed by a single coating or a single printing process so that the color concentration is uniform. However, the entire surface of the base color film may not be a uniform color, and the color of a part may be changed according to the design.

[0081] In the case where a solar panel is arranged on the back of a watch dial, it is preferable not to provide a base color film and a substrate as in the watch dial 3C in order to increase the amount of light reaching the solar panel. However, by reducing the thickness of the base color film, a base color film may be provided when the amount of light required for power generation reaches the solar panel. In addition, by using a transparent synthetic resin or the like as a substrate, a substrate may be provided when the amount of light required for power generation reaches the solar panel, and further, both a base color film and a substrate may be provided.

[0082] In the watch dials 3, 3B, 3C, and 3D of the various embodiments, the direction of the color change of the gradient may be set to the opposite direction. For example, in the watch dial 3, the color of the outer circumference is thick and the color becomes lighter as it approaches the inner circumference. However, the color of the inner circumference is thick and the color becomes lighter as it approaches the outer circumference. Similarly, in other watch dials 3B, 3C, and 3D, the direction of the color becoming lighter may be set to the opposite direction.

[0083] In the watch dial 3, 3B, a gradient coloring is adopted in which the color changes in the radial direction of the light-transmitting substrate 20, 20B, but a gradient coloring may be adopted in which the color changes in the circumferential direction of the light-transmitting substrate 20, 20B. For example, the color of the watch dial may be the darkest at the 12 o'clock position, and the color may be gradually lightened as it passes through the 3 o'clock and 9 o'clock positions toward the 6 o'clock position.

[0084] In the watch dial 3C, a front gradient coloring film 10C and a back gradient coloring film 30C are provided along the 12 o'clock and 6 o'clock directions, but it is not limited thereto. That is, in various watch dials in a disc or rectangular shape, the gradient coloring films on the front and back sides can also be formed into straight lines such as the vertical line connecting the directions of the marks at 12 o'clock and 6 o'clock, the horizontal line connecting the marks at 3 o'clock and 9 o'clock, and the oblique line connecting the directions of the marks at 2 o'clock and 8 o'clock. In this case, more than two gradient coloring films can also be provided in the cross direction. Furthermore, multiple front gradient coloring films can also be provided in parallel, and multiple back gradient coloring films can also be provided in parallel. In addition, in the case of forming a gradient coloring film in a straight line, not only can a gradient coloring film whose color changes in a direction perpendicular to the extension direction of the gradient coloring film, such as the watch dial 3C, be used, but also a gradient coloring film whose color changes in the extension direction can be used.

[0085] Gradient colored films on the front and back sides may be formed radially from the center of the plane of the watch dial toward the periphery. For example, a fan-shaped front gradient colored film with a central angle of 30 degrees may be formed in the four directions of 12 o'clock, 3 o'clock, 6 o'clock, and 9 o'clock of the watch dial, and a fan-shaped back gradient colored film with a central angle of 60 degrees may be formed in the same four directions. In this case, for example, a back gradient colored film is formed in the range of 11 o'clock to 1 o'clock, 2 o'clock to 4 o'clock, 5 o'clock to 7 o'clock, and 8 o'clock to 10 o'clock of the watch dial, and a front gradient colored film is formed in the range of ±15 degrees centered at the four directions of 12 o'clock, 3 o'clock, 6 o'clock, and 9 o'clock, and each gradient colored film is not formed in the range of 1 o'clock to 2 o'clock, 4 o'clock to 5 o'clock, 7 o'clock to 8 o'clock, and 10 o'clock to 11 o'clock, for example, a region where the base colored film is exposed is formed.

[0086] In addition, each gradient color film can be formed into a spiral shape when viewed from above, or can be formed into a star shape, a crescent shape, etc. In addition, the front gradient color film can be formed into a straight line shape, and the back gradient color film can be formed into a circle shape, etc., so that each gradient color film has a different plane shape.

[0087] In addition, the base color film is not limited to being formed on the entire surface of the back side of the translucent substrate. For example, it can be formed only in the areas on the front and back sides where the gradient color films are not formed, or it can be formed only in the areas on the front and back sides where the gradient color films are formed.

[0088] That is, the area, number, plane shape, color change direction, etc. of the front gradation color film, the back gradation color film, and the base color film can be appropriately set according to the design of the watch dial. In particular, if each color film is formed by inkjet printing, the area, number, plane shape, color change direction, etc. of each color film can be freely designed, thereby increasing the degree of freedom in the design of the watch dial.

[0089] [Summary of the present disclosure]

[0090] The watch dial disclosed in the present invention comprises: a translucent substrate; a front gradient coloring film formed by gradiently coloring a front coloring material on the front side of the translucent substrate; and a back gradient coloring film formed by gradiently coloring a back coloring material on the back side of the translucent substrate.

[0091] According to the watch dial disclosed in the present invention, a front gradient coloring film and a back gradient coloring film are respectively provided on the front and back sides of the translucent substrate, which are colored by a coloring material in a gradient coloring manner, that is, in a manner in which the concentration of the color changes continuously or in stages. Therefore, a part in which the front gradient coloring film becomes the main body and a part in which the back gradient coloring film becomes the main body can be formed in the appearance design, so that fine coloring and patterns can be formed, and the range of appearance design expression of the watch dial can be expanded. In addition, if a pattern is formed on the translucent substrate, the aesthetics of the watch dial can be improved through the synergistic effect of the pattern of the translucent substrate and the gradient coloring films on the front and back sides of the translucent substrate.

[0092] In the watch dial disclosed in the present invention, it may be that, when viewed from above in a direction perpendicular to the front side of the translucent substrate, the watch dial has at least: an area where the front gradient coloring film and the back gradient coloring film are overlapped; and an area where the back gradient coloring film is provided and the front gradient coloring film is not provided.

[0093] According to the timepiece dial of the present disclosure, a region where the front and back gradation colored films overlap and a region where only the back gradation colored film is provided can be formed, so that a subtle design utilizing the change in color and the change in shade can be expressed.

[0094] In the watch dial disclosed herein, the front gradient colored film may overlap with the back gradient colored film as a whole when viewed from above, and the back gradient colored film may have an area overlapping with the front gradient colored film and an area not overlapping with the front gradient colored film.

[0095] According to the watch dial disclosed herein, the entire area of ​​the front gradient coloring film overlaps with a portion of the back gradient coloring film, and the back gradient coloring film can be formed in an area larger than the front gradient coloring film. Therefore, the color of the front gradient coloring film can be set based on the color of the back gradient coloring film, and a combination of colors with excellent aesthetics can be easily set.

[0096] In the watch dial disclosed in the present invention, a base coloring film colored with a base coloring material may be formed on the back side of the translucent substrate and the back side gradient coloring film, and when viewed from above in a direction perpendicular to the front side of the translucent substrate, the watch dial may have an area where the base coloring film is provided for providing the front side gradient coloring film and the back side gradient coloring film.

[0097] According to the timepiece dial of the present disclosure, since the base color film is formed, a more delicate and complex appearance design can be expressed by overlapping the front gradient color film or the back gradient color film with the base color film. In addition, since there is an area where only the base color film can be seen, a more complex design can be realized.

[0098] In the timepiece dial of the present disclosure, a base coloring film colored with a base coloring material may be formed on the back surface of the light-transmitting substrate and the back surface of the back gradation coloring film, and a base material may be bonded to the back surface side of the base coloring film.

[0099] According to the timepiece dial disclosed in the present invention, since it has a base material bonded to the reverse side of the base color film, the strength of the timepiece dial can be improved. In addition, since the base material is shielded by the base color film, the metal or synthetic resin base material can be prevented from being directly seen, and the appearance design of the timepiece dial can be improved.

[0100] In the watch dial disclosed in the present invention, a through hole may be formed in the center of the plane of the translucent substrate, and the front gradient colored film and the back gradient colored film may be gradiently colored to be concentric circles centered on the through hole, and the color becomes lighter as it moves from the periphery of the translucent substrate toward the center.

[0101] According to the timepiece dial of the present invention, the color of the outer peripheral side is dark and the color becomes lighter toward the inner side, so that a bright design can be realized on the center side.

[0102] In the watch dial disclosed in the present invention, a through hole may be formed in the center of the plane of the translucent substrate, and the front gradient colored film and the back gradient colored film may be gradiently colored to be concentric circles centered on the through hole, and the color becomes lighter from the center of the translucent substrate toward the periphery.

[0103] According to the timepiece dial of the present invention, the color is dark at the center and becomes lighter toward the periphery, so that a bright design can be achieved on the periphery.

[0104] In the watch dial disclosed in the present invention, the inner edge of the reverse gradient colored film may be located at a middle position between the through hole of the translucent substrate and the outer edge of the translucent substrate, or may be located inside the middle position, and the inner edge of the front gradient colored film may be located outside the middle position.

[0105] According to the watch dial disclosed in the present invention, the inner edge of the gradient colored film on the back side is formed to a position closer to the inner side of the translucent substrate than the inner edge of the gradient colored film on the front side. Therefore, the watch dial can form an area on the center side of the plane where no gradient colored film is provided on both the front and back sides, can form an area on the outside thereof where a gradient colored film on the back side is provided, and can form an area on the outside thereof where a gradient colored film on both the front and back sides is provided, thereby realizing a design in which the color or its concentration changes along the radial direction.

[0106] In the watch dial disclosed in the present invention, the back gradient coloring film may be arranged in a straight line with a constant width dimension, the front gradient coloring film may be arranged in a straight line with a constant width dimension, the width dimension of the front gradient coloring film is smaller than the width dimension of the back gradient coloring film, and the front gradient coloring film and the back gradient coloring film may be arranged overlapping.

[0107] According to the timepiece dial of the present invention, a design having linear gradation coloring can be realized.

[0108] In the timepiece dial of the present disclosure, it is preferable that the back surface gradation colored film and the front surface gradation colored film are formed by painting or inkjet printing.

[0109] When the watch dial is a disc, the light-transmitting substrate is rotated on a rotating table and the paint is sprayed from a spray gun, thereby achieving gradient coloring. In addition, if inkjet printing is used, not only a disc-shaped watch dial can be printed, but also various watch dials with different plane shapes such as rectangles and ellipses can be printed.

[0110] In the timepiece dial of the present disclosure, it is preferable that the base colored film is formed by painting or inkjet printing.

[0111] When the watch dial is a disc, the light-transmitting substrate is rotated on a rotating table and the paint is discharged from the spray gun, thereby realizing the base color film. In addition, if inkjet printing is used, the base color film can be printed not only on disc-shaped watch dials but also on various watch dials with different plane shapes such as rectangular and elliptical shapes.

[0112] In the timepiece dial of the present invention, it is preferred that the light-transmitting substrate is made of a mother-of-pearl sheet.

[0113] If the light-transmitting substrate is formed of a mother-of-pearl sheet, it is possible to provide a timepiece dial having a high aesthetic appeal that makes effective use of the natural pattern of mother-of-pearl.

[0114] In the timepiece dial of the present disclosure, the light-transmitting substrate may be a polycarbonate substrate.

[0115] If the light-transmitting substrate is formed of a polycarbonate substrate, the light-transmitting substrate can be used to ensure the strength required for the watch dial. Therefore, there is no need to provide a base material separately from the light-transmitting substrate to improve the strength, and therefore, a solar panel can be provided on the back side of the watch dial to generate electricity.

[0116] The timepiece of the present invention is characterized in that the timepiece includes the timepiece dial.

[0117] According to the timepiece of the present invention, the aesthetics of the timepiece dial can be improved, and a timepiece excellent in design can be provided.

Claims

1. A watch dial, comprising: Light-transmitting substrate; A front gradient coloring film, which is formed by applying a front coloring material to the front surface of the light-transmitting substrate in a gradient coloring manner; as well as The reverse side gradient coloring film is formed by applying a reverse side coloring material to gradient coloring on the reverse side of the light-transmitting substrate.

2. The timepiece dial according to claim 1, wherein: When viewed from above in a direction perpendicular to the front surface of the light-transmitting substrate, The watch dial has at least: An area where the front gradient color film and the back gradient color film overlap; and A region where the reverse gradation color film is provided and where the front gradation color film is not provided.

3. The timepiece dial according to claim 2, wherein: When viewed from above, The front gradient color film entirely overlaps with the back gradient color film, The reverse-side gradation color film has a region that overlaps with the reverse-side gradation color film and a region that does not overlap with the reverse-side gradation color film.

4. The timepiece dial according to claim 1, wherein: A base coloring film colored with a base coloring material is formed on the back surface of the light-transmitting substrate and the back surface of the back-gradient coloring film. When viewed in plan from a direction perpendicular to the front surface of the light-transmitting substrate, the timepiece dial has a region where the front gradation colored film and the back gradation colored film are not provided but the base colored film is provided.

5. The timepiece dial according to claim 1, wherein: A base coloring film colored with a base coloring material is formed on the back surface of the light-transmitting substrate and the back surface of the back-gradient coloring film. A base material is bonded to the reverse side of the base color film.

6. The timepiece dial according to claim 1, wherein: A through hole is formed in the center of the plane of the light-transmitting substrate. The front surface gradation colored film and the back surface gradation colored film are gradation colored to form concentric circles centered on the through hole, and the colors become lighter from the outer periphery toward the center of the light-transmitting substrate.

7. The timepiece dial according to claim 1, wherein: A through hole is formed in the center of the plane of the light-transmitting substrate. The front-side gradation colored film and the back-side gradation colored film are gradationally colored to be concentric circles centered on the through hole, and the colors become lighter from the center toward the periphery of the light-transmitting substrate.

8. The timepiece dial according to claim 6 or 7, wherein: The inner peripheral edge of the reverse-face gradient color film is located at a middle position between the through hole of the light-transmitting substrate and the outer peripheral edge of the light-transmitting substrate, or is located inside the middle position. The inner peripheral edge of the front gradation color film is located outside the middle position.

9. The timepiece dial according to claim 1, wherein: The reverse side gradient color film is arranged in a straight line with a constant width. The front gradient color film is arranged in a straight line with a constant width. The width dimension of the front gradation color film is smaller than the width dimension of the back gradation color film, and the front gradation color film and the back gradation color film are arranged to overlap.

10. The timepiece dial according to claim 1, wherein: The reverse gradation color film and the front gradation color film are formed by coating or inkjet printing.

11. The timepiece dial according to claim 4 or 5, wherein: The base color film is formed by coating or inkjet printing.

12. The timepiece dial according to claim 1, wherein: The light-transmitting substrate is composed of mother-of-pearl sheets.

13. The timepiece dial according to claim 1, wherein: The light-transmitting substrate is a substrate made of polycarbonate.

14. A timepiece comprising the timepiece dial according to claim 1.

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