JP3638484B2 - Display board - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a timepiece display board in which a metal film is formed on a surface of a base material to give a gold color tone, a display board such as a display board of various instruments or various nameplates.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in a display panel for a watch, it is often performed to make a display panel by applying gold plating or the like in order to have a metallic feeling and make a high-class appearance appear. Watch for a display board which has been subjected to the gold plating, an expensive gold material cost is very high for use, it has been used to watch the high-priced and say throat Chiraka.
[0003]
FIG. 3 is a cross-sectional view of a timepiece display panel with a conventional gold color. In FIG. 3, the timepiece display plate 30 is provided with a small hole 31a for attaching a pointer at the center thereof, and on the back surface of a metal plate such as a brass plate provided with two timepiece movement attachment feet 31b. A pattern such as an Asahi light pattern or a satin pattern is applied to the substrate, and a plating layer laminated in order of a nickel (Ni) plating layer 32, a silver (Ag) plating layer 33, and a gold (Au) plating layer 34 is further applied thereon. A display panel base 31 is formed. An indicator such as a time letter 35 is attached to a predetermined position on the upper surface of the display substrate 31.
[0004]
There are many different shades of gold. They are broadly classified and called, for example, “red”, “blue”, and “Yamabuki”. In addition, these are also classified into dark and usui. For example, as "red", the reddish gold and dark gold color tone is "red gold", and the red color is slightly darker than the red gold color. It is called “Red Gold”. In addition, as “Yamabuki-colored system”, the color of the gold color that is more golden than the red color of the mouse is called “us gold”, and the color of the gold color is further called “usus gold”. Among such divisions, the color of “usus gold” is often used as a clock display board.
[0005]
As described above, the timepiece display board 30 is often used in the “mountain-brown” system, and in particular, “usus gold”. In order to obtain the color tone of the “usus gold”, the clock display board 30 is plated with cyan gold. When plating using this cyan gold, the color tone of “usus gold” can be obtained by adjusting the applied voltage, current value, plating time, etc. in plating.
[0006]
[Problems to be solved by the invention]
Therefore, in order to obtain a display plate with a gold color tone by gold plating, the material cost of gold is high, and since the gold plating is also applied to the back side of the display plate which cannot be seen at all, there is a lot of waste of material cost. The appearance of a metal-colored display plate equivalent to gold plating at a low cost becomes a problem.
[0007]
The present invention has been made in view of the above-described conventional problems, and provides a display panel that uses a sublimation dye to make a metal color equivalent to the above gold plating appear and feels high-quality at a low price.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, a display plate according to the present invention is a display plate in which a metal film is formed on the surface of a base material and a gold color tone is applied, and a silver metal film is formed on the surface of the base material. A transparent receptive layer is formed on the upper surface of the membrane, and a sublimation dye solution is prepared by mixing three kinds of sublimation dyes of yellow, red, and blue at a predetermined ratio, and immersed for a predetermined time under a heating condition. In addition, the mixed dye is infiltrated in the receiving layer, and the receiving layer is pressurized under heating to cause a gold color toned to a desired color to appear. It is.
[0011]
Further, in a display board in which a metal film is formed on the surface of the base material and subjected to a gold color tone, a silver metal film is formed on the surface of the base material, and a transparent receiving layer is formed on the upper surface of the silver metal film. , Red and blue sublimation dye dissolving solutions are made, and the base material on which the receiving layer is formed is immersed in each for a predetermined time, yellow dye capacity + red dye capacity + blue dye capacity < It is prepared in a saturated volume and is characterized by the appearance of a gold color toned to a desired color by mixing three kinds of dyes of yellow, red and blue in the receiving layer.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
The display board according to the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of a timepiece display plate according to a first embodiment of the present invention.
[0015]
In FIG. 1, a watch display board 10 is provided with a small hole 11a for attaching a pointer at the center thereof, and a metal plate such as a brass plate provided with two legs 11b for attaching a watch movement on the back surface. A silver metal film 12 is formed on the outermost surface by applying silver (Ag) plating to the display board substrate 11 which is provided with a pattern such as an Asahi light pattern and nickel (Ni) plating.
[0016]
The receiving layer 13 is formed on the upper surface of the silver metal film 12 by a method such as printing with a transparent polyurethane resin or the like. This receiving layer 13 is a layer in which an ultraviolet absorber described later is dispersed. Further, the surface of the receiving layer 13 is polished to form a flat surface. This receiving layer 13 is infiltrated with a sublimable dye, which will be described later, which has been yellowish by an immersion method . A time plate 14 made of metal is attached to a predetermined position on the upper surface of the receiving layer 13 infiltrated with the dye to constitute the timepiece display panel 10.
[0017]
The thickness of the receiving layer 13 is preferably about 10 μm or more. If the thickness of the receptor layer 13 is too thin, the dye is soaked in the dye, and a phenomenon occurs in which the dye is lost due to a temperature change or the like in a long period of time and fades. Further, the thicker one is not particularly limited, and the thicker one is preferable because the depth of penetration of the dye can be increased. However, there is a problem that the printing cost is increased. Even if it is thick, a thickness of about 80 μm is sufficient.
[0018]
In the present embodiment, the receiving layer 13 is formed of a polyurethane resin as described above, but is not particularly limited, and various resins such as an acrylic resin and a polyester resin can be selected. The receiving layer 13 can be formed by forming the resin to be used into a paint and forming it by a printing or coating method.
[0019]
In the present embodiment, an ultraviolet absorber of 2- (3,5-di-t-butyl-2-hydroxyphenyl) benzotriazole is added to the receiving layer 13 with respect to 100 parts by weight of the polyurethane resin. Weight parts are dispersed and blended. When the ultraviolet absorber is contained, the light resistance of the sublimable dye can be improved. Examples of the ultraviolet absorber include 2- (3-t-butyl-5-methyl-2-hydroxyphenyl) in addition to 2- (3,5-di-t-butyl-2-hydroxyphenyl) benzotriazole described above. -5-Chlorobenzotriazole and ultrafine zinc oxide are very effective. Further, when the receiving layer 13 is polished to be a smooth surface, the receiving layer 13 is colored with a uniform color tone without causing uneven coloring.
[0020]
The above-described method of immersing the yellowish sublimation dye is about 98% of the “yellow” sublimation dye, about 1% of the “red” sublimation dye, and about 1% of the “blue” sublimation dye. (All blended by weight) are mixed to make a solution in which a sublimable dye is dissolved in an affinity oligomer, for example, a polyester resin oligomer having a low degree of polymerization, and heated to about 100 ° C., colored and immersed for display panel 10 for about 2 minutes clock, further, for about 1 minute pressurized dye-receiving layer 13 portion after washing at a pressure of about 4 kg / cm @ 2 in a state heated to approximately 180 ° C.-position It has penetrated into the receiving layer 13. The timepiece display panel 10 formed in this way can be obtained in a color tone that is exactly the same as the appearance color tone that has been finished to a “usus gold” color tone by gold plating.
[0021]
By forming a receiving layer immersed sublimable dye yellowish on the silver metal film, color tone yellowish silver color sublimation dye of tinged tone is color appear a shade of gold . Furthermore, the presence of a silver metal film that gives a metallic feel gives rise to a gold color with a metallic feel.
[0022]
Here, the composition of the sublimation dye may be appropriately determined according to the gold color desired to appear within the range of about 90% or more of “yellow”, about 5% or less of “red”, and about 5% or less of “blue”. Any color tone of “red”, “blue”, and “mountain color” based on the above-described blending range can freely and selectively appear. As mentioned above, bringing the “red” dye to about 3 to 5%, making the “blue” dye in a very small amount of about 0 to 1% and blending the remaining amount with the “yellow” dye, Reddish red gold and us red gold colors can be obtained. Conversely, if the amount of the “red” dye is made extremely small and the amount of the “blue” dye is increased, a “blue” gold color tone can be obtained. In addition, when the “red” dye and the “blue” dye are mixed together at about 1% and the remaining amount of “yellow” dye is blended, a “Yamabuki-colored” color, that is, the color tone of us gold or usus gold is obtained.
[0025]
FIG. 2 is a cross-sectional view of a timepiece display panel according to the second embodiment of the present invention. In FIG. 2, the timepiece display plate 20 is provided with a small hole 21a for attaching a pointer at the center thereof, and on the back surface of a metal plate such as a brass plate provided with two timepiece attachment feet 21b. The display board substrate 21 is provided with a satin pattern and further plated with nickel (Ni). Then, silver (Ag) plating is applied to the outermost surface, and the silver metal film 22 and the display board substrate 21 are formed at predetermined positions by printing or the like. It was a shape 24 when formed in the receiving layer comprising a resin coating, a surface provided on the upper surface of the hour numerals 24 and silver metal film 22 and a smooth clear coating 25.
[0026]
Here, a sublimation dye, which will be described later, is infiltrated and colored in the time letters 24 made of the above-described resin paint by an immersion method. The sublimation dye here is a dye which is a mixture of about 98% of "yellow" dye and about 1% of "red" and "blue", and has a yellowish color tone. is there. When the time character 24 is viewed from the upper surface side, the color tone of the dye and the color of the silver metal film 22 are adjusted to form a time character 24 in which a deep yellow gold color, that is, a color tone of “usus gold” appears. appear.
[0027]
In the present embodiment, the printed resin coating of the time character 24 formed by printing is a polyurethane resin coated for printing. And the ultraviolet absorber used in the first embodiment is also dispersed. This paint is formed to a thickness of about 50 μm by a screen-in printing method.
[0028]
The coloring method for the time character 24 described above is that a solution that dissolves a sublimation dye in which "yellow" dye is mixed at a ratio of approximately 98% and "red" and "blue" are mixed at a ratio of approximately 1% is sublimation. An oligomer having an affinity with a functional dye, such as a polyester resin oligomer having a low degree of polymerization, can be used. A powdery sublimation dye is put into this solvent and gradually heated, and when a certain dissolution temperature is reached, the dye dissolves to form a dye solution.
[0029]
In this embodiment, as a solvent, 4 parts by weight of 100 parts by weight of “Adekasizer PN-160” (trade name, manufactured by Asahi Denka Kogyo Co., Ltd.), which is a polyester resin oligomer, is mixed and heated to dissolve the dye. In this state, the sublimation dye solution is heated to approximately 100 ° C., and the watch display plate 20 having the time characters 24 formed thereon is colored by dipping for about 2 minutes. Is heated at a pressure of 4 kg / cm @ 2 under a temperature of about 180 DEG C. to penetrate the dye deeply. In this way, the dye penetrated by pressurization after coloring penetrates further deeply, and decolorization does not occur even under environmental conditions such as long-term temperature changes, and weather resistance can be improved. The transparent clear coating film 25 is formed by applying or printing with acrylic resin paint or the like after coloring the character 24 with a sublimation dye. Thereafter, the upper surface is formed into a smooth surface by polishing.
[0030]
By adopting the above method, only the portion of the time character 24 appears in a gold color tone, and the other portion is in a silver color tone. Therefore, the time display 24 provided with the gold color tone time character 24 on the silver ground that shines in silver. A plate 20 is obtained.
[0031]
A third embodiment of the present invention will be described. Although not shown in the drawing, as in the first embodiment described above, the outermost surface is obtained by applying silver plating to a nickel-plated display plate base plate having a radial pattern or the like on a pressed metal plate such as brass. A silver metal film is formed on the silver metal film, and a receiving layer is formed on the silver metal film by a method such as printing with a transparent polyurethane resin. The receiving layer also has an ultraviolet absorber dispersed therein. Further, the surface of the receiving layer is polished to be a smooth surface.
[0032]
Next, three types of “yellow” sublimable dye solution, “red” sublimable dye solution, and “blue” sublimable dye solution are prepared, and a receiving display layer is formed therein. Each of these is soaked for a predetermined period of time, and is formulated so that “yellow” dye capacity + “red” dye capacity + “blue” dye capacity <saturation capacity, and yellow, red, blue 3 in the receiving layer. By mixing various types of dyes, a gold color tone that is adjusted to a desired color tone appears.
[0033]
If the sum of the above three types of dye capacities becomes supersaturated, the previous penetrating dye will come out, and the toning balance will be lost, making it impossible to obtain the desired toning. In the case of polyurethane resin, it will be saturated when immersed for 3 minutes.
[0034]
Here, for example, in the case where a red or blue dye is toned in a ratio of about 1% in the receiving layer, the immersion time can be adjusted in about 1 to 2 seconds. Therefore, coloring by this method requires immersion of second management.
[0035]
After preparing the above three kinds of sublimation dye-dissolved solutions, they are soaked and colored sequentially for a predetermined time. During soaking, the solution is constantly stirred and soaked in the receiving layer for a predetermined time. Take out from the solution and clean it with alcohol, then color the next. By washing cleanly with alcohol etc., the first dye remains as it is, and the next dye penetrates and enters, so the dye of “yellow”, “red” and “blue” in the receiving layer Is mixed and blended to obtain a golden tone.
[0036]
Here, “yellow” dye capacity + “red” dye capacity + “blue” dye capacity <saturation capacity, which is formulated so that a gold color toned to a desired color appears. The concentration of coloring changes depending on the soaking time. For example, if the time is short, the color is light, and if the time is long, the color is dark. This is because the capacity of the dye soaked in the receiving layer is different. Therefore, depending on the soaking time of the dye solution having different colors, the amount of the soaking of the dyes of different colors is determined, and a blended color corresponding to the soaking capacity is obtained. The immersion time varies depending on the viscosity of the solvent used, the heating temperature, or the material of the receiving layer. For example, when the heating temperature of the dye solution is 120 ° C. and 150 ° C., the immersion time is faster because the viscosity of the dye solution is lower and the liquid pressure is higher at 150 ° C. When the receiving layer is made of a polyurethane resin and an acrylic resin, the polyurethane resin penetrates faster.
[0037]
The heating temperature of the sublimable dye-dissolved solution is preferably set in consideration of the material of the receiving layer. For example, when the polycarbonate resin of the receiving layer is selected, it takes time for the dye to permeate and it is necessary to set the immersion time longer. In this case, the soaking time of the dye can be shortened by setting the heating temperature high, and the soaking time can be shortened.
[0038]
Further, as described in the present embodiment, the receiving layer of the timepiece display panel contains, for example, an ultraviolet absorber such as 2- (3,5-di-t-butyl-2-hydroxyphenyl) benzotriazole. The light resistance of the sublimation dye can be improved. As a result of 100 hours of sunshine weather meter test in the wet state, the display panel for a watch has no deterioration such as fading in the colored gold color tone. A very good light-proof watch display board was obtained.
[0039]
The present invention has been described with reference to the above-described watch display board, but is not limited to this, and color coloring such as display boards of various instruments and instruments having a display unit, or simply various nameplates and various seal boards In particular, a gold color tone can appear, and it can be applied to a wide range of display boards of various electronic devices.
[0040]
【The invention's effect】
In the past, gold plating was applied to the back of the invisible display board, so there was a lot of waste of the material cost of gold, but according to the present invention, it is possible to appear a gold color equivalent to gold plating using a sublimation dye It is. Therefore, it is possible to provide an inexpensive display panel that gives a sense of quality with a soft metallic feeling.
[0041]
Further, by incorporating an ultraviolet absorber in the receiving layer, the light resistance is improved, and a beautiful golden color tone is maintained for a long time.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a timepiece display plate according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of a timepiece display plate according to a second embodiment of the present invention.
FIG. 3 is a cross-sectional view of a timepiece display panel with a conventional gold color.
[Explanation of symbols]
10, 20 Clock display board 11, 21 Display board base 12, 22 Silver metal film 13 Receiving layer 14, 24 Time 25 Clear coating

Claims (2)

In the display panel on the surface of the substrate subjected to the metal film formed by gold color, silver metal film is formed on the surface of the substrate to form a transparent receptive layer on the upper surface of the silver metal layer, yellow, red , Make a sublimation dye solution by mixing 3 kinds of blue sublimation dyes at a predetermined ratio A display board characterized in that a gold color tone adjusted to a desired color tone is caused to appear by infiltrating and pressurizing the receiving layer under heating. In the display panel on the surface of the substrate subjected to the metal film formed by gold color, silver metal film is formed on the surface of the substrate to form a transparent receptive layer on the upper surface of the silver metal layer, yellow, red 3 types of sublimation dye solution of blue color are prepared, and the base material on which the receiving layer is formed is immersed in each for a predetermined time, yellow dye capacity + red dye capacity + blue dye capacity <saturation capacity A display board characterized in that a gold color tone adjusted to a desired color tone appears by mixing three kinds of dyes of yellow, red and blue in the receiving layer.

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