Thermal transfer sheet, combination of image receiving sheet and thermal transfer sheet, skin design sheet manufacturing system, and skin design sheet manufacturing method

Abstract

To provide a thermal transfer sheet that enables the production of a skin design sheet according to the color of a user's skin with reduced production cost, a combination of an image receiving sheet and a thermal transfer sheet, a skin design sheet production system and a method for producing a skin design sheet.SOLUTION: A thermal transfer sheet disclosed herein is a thermal transfer sheet for printing some design on skin. On one side of a substrate sheet, a reception layer, a first dye layer, a second dye layer and a protective layer are sequentially formed, which constitute one set; and the one set is repeatedly arranged.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a thermal transfer sheet, a combination of an image receiving sheet and a thermal transfer sheet, a skin design sheet manufacturing system, and a skin design sheet manufacturing method. [Background technology]

[0002] Skin design sheets, such as tattoo stickers and skin concealing sheets, are known for application to the skin. Tattoo stickers with various designs printed on them are sold at variety stores, sporting and music event venues, amusement parks, etc., and are used to liven up the atmosphere.

[0003] Skin-concealing sheets are sheets in which a base material is pre-colored with a predetermined color by screen printing or the like, and are used to conceal discolorations such as skin blemishes and blemishes. Users choose one that matches their skin color. For example, a skin-concealing sheet is made up of a release sheet, an adhesive layer, a stretchable base material, and a cover sheet laminated in that order, and is attached to the user's skin by peeling off the release sheet, attaching the adhesive layer to the skin, and then peeling off the cover sheet.

[0004] Users can choose a skin concealing sheet that matches their natural skin color from the multiple colors available on the market, but the colors of skin concealing sheets on the market are limited, and users can be bothered by the color difference between the skin concealing sheet and their natural skin, which can leave them dissatisfied.

[0005] It is conceivable to produce a skin-concealing sheet by on-demand printing in a color that matches the user's skin tone. A dye-sublimation thermal transfer printer, which has excellent color reproducibility and gradation, is suitable for printing. Thermal transfer printers heat a thermal transfer sheet to transfer dyes and form images, so the skin-concealing sheet must have a receptor layer to receive the dye. If a receptor layer is pre-formed on a stretchable substrate, there is a risk that the stretchable substrate may melt, be damaged, or be denatured or deformed by the solvent contained in the coating liquid during the process of applying and drying a coating liquid for the receptor layer on the stretchable substrate. Therefore, it is preferable to transfer the receptor layer onto the stretchable substrate by thermal transfer. The thermal transfer sheet is configured with at least five panels, each panel consisting of a receptor layer panel, a yellow dye layer panel, a magenta dye layer panel, a cyan dye layer panel, and a protective layer panel, arranged in a repeated pattern.

[0006] Because one set of thermal transfer sheets is used to make one skin-concealing sheet, the more panels that make up one set, the slower the speed at which the skin-concealing sheets can be made and the fewer skin-concealing sheets can be made from one thermal transfer sheet, which increases production costs. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-100851 Summary of the Invention [Problem to be solved by the invention]

[0008] The present disclosure aims to provide a thermal transfer sheet, a combination of an image receiving sheet and a thermal transfer sheet, a skin design sheet manufacturing system, and a method for manufacturing a skin design sheet, which enable the production of a skin design sheet that matches the color tone of a user's skin at reduced production costs. [Means for solving the problem]

[0009] The thermal transfer sheet of the present disclosure is a thermal transfer sheet for printing skin designs, and is configured such that a receiving layer, a first dye layer, a second dye layer, and a protective layer are formed in face-sequential order on one side of a base sheet, forming one set, and this set is repeatedly arranged.

[0010] The combination of an image-receiving sheet and a thermal transfer sheet of the present disclosure comprises an image-receiving sheet in which a release sheet, a pressure-sensitive adhesive layer, and a stretchable sheet are laminated in this order, and the thermal transfer sheet.

[0011] The skin design sheet manufacturing system of the present disclosure comprises a photographing device that photographs a user's skin, including a discolored area, and generates a photographed image; an analysis unit that analyzes the hue of the discolored area from the photographed image; a skin design sheet data generation unit that generates data for a skin design sheet that conceals the discolored area using the analysis results of the analysis unit; and a printer that transfers dye from a thermal transfer sheet to a receiving layer based on the data for the skin design sheet to form an image and produce a skin design sheet including the receiving layer on which the image is formed.The printer heats the thermal transfer sheet, transfers the receiving layer onto the stretchable sheet of an image receiving sheet in which a release sheet, an adhesive layer, and a stretchable sheet are laminated in this order, transfers dyes from the first dye layer and the second dye layer to the transferred receiving layer to form the image, and transfers the protective layer onto the receiving layer on which the image is formed, to produce the skin design sheet.

[0012] The method for manufacturing a skin design sheet of the present disclosure comprises the steps of: using a photographing device to photograph a user's skin, including a discolored area, and generating a photographed image; using an arithmetic and control device to analyze the hue of the discolored area from the photographed image and, based on the analysis results, generate data for a skin design sheet that conceals the discolored area; and using a printer to transfer dye from a thermal transfer sheet to a receiving layer based on the data for the skin design sheet, to form an image, and produce a skin design sheet including the receiving layer on which the image has been formed. The printer heats the thermal transfer sheet, transfers the receiving layer onto the stretchable sheet of an image receiving sheet in which a release sheet, an adhesive layer, and a stretchable sheet are laminated in this order, transfers dyes from the first dye layer and the second dye layer to the transferred receiving layer to form the image, and transfers the protective layer onto the receiving layer on which the image has been formed, thereby producing the skin design sheet. [Effects of the Invention]

[0013] According to the present disclosure, a skin design sheet that matches the color tone of a user's skin can be manufactured at reduced production costs. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a schematic configuration diagram of a skin-design sheet manufacturing system according to an embodiment of the present disclosure. FIG. [Figure 2] FIG. 2 is a functional block diagram of an arithmetic and control device. [Figure 3] FIG. 3a is a diagram showing a photographed image, FIG. 3b is a diagram showing an image of the skin design sheet, and FIG. 3c is a diagram showing a simulation image. [Figure 4] FIG. 1 is a schematic diagram illustrating the configuration of a printer. [Figure 5] FIG. 2 is a plan view of a thermal transfer sheet. [Figure 6] FIG. 2 is a cross-sectional view of an image-receiving sheet. [Figure 7] 7a to 7c are cross-sectional views illustrating the steps of a method for producing a skin-design sheet. [Figure 8] FIG. 10 is a diagram showing an example of use of the skin design sheet. [Figure 9]FIG. 2 is a plan view of a thermal transfer sheet. [Figure 10] 10a to 10c are cross-sectional views illustrating the steps of a method for producing a skin-design sheet. [Figure 11] FIG. 10 is a diagram showing an example of use of the skin design sheet. [Figure 12] FIG. 1 is a schematic diagram illustrating the configuration of a printer. [Figure 13] FIG. 2 is a plan view of a thermal transfer sheet. [Figure 14] FIG. 2 is a cross-sectional view of an intermediate transfer medium. [Figure 15] FIG. 2 is a cross-sectional view of an intermediate transfer medium. [Figure 16] FIG. 2 is a cross-sectional view of a skin design sheet. [Figure 17] FIG. 10 is a diagram showing an example of use of the skin design sheet. [Figure 18] FIG. 1 is a schematic diagram illustrating the configuration of a printer. [Figure 19] FIG. 3 is a cross-sectional view of a cover sheet. [Figure 20] FIG. 2 is a cross-sectional view of a skin design sheet. [Figure 21] FIG. 2 is a plan view of a thermal transfer sheet. [Figure 22] FIG. 2 is a plan view of a thermal transfer sheet. [Figure 23] FIG. 2 is a plan view of a thermal transfer sheet. DETAILED DESCRIPTION OF THE INVENTION

[0015] Fig. 1 is a schematic diagram of a skin design sheet manufacturing system according to an embodiment of the present disclosure. As shown in Fig. 1, the skin design sheet manufacturing system includes a photographing device 1, a calculation and control device 2, a display device 3, and a printer 4, and produces a skin design sheet 5 that conceals discoloration such as blemishes and scratches by being attached to the skin of a user P. The skin design sheet 5 includes a concealing portion (high light transmittance density portion) that is positioned directly above the discoloration when attached to the skin of the user P and conceals the discoloration, and a peripheral portion that surrounds the concealing portion and reduces the color difference with the user's natural skin, making the skin design sheet less noticeable.

[0016] The photographing device 1 may be a digital camera or the like, and photographs the user P. In addition to the imaging equipment, the photographing device 1 also includes equipment such as lighting equipment and background equipment for properly capturing the skin color of the user P. The photographing device 1 may be something like a photo booth for ID photos. In the following embodiment, the photographing device 1 is described as photographing the face of the user P. If the user has applied makeup to their bare skin in advance, the bare skin in the photographed facial image refers to the state after the makeup has been applied to the bare skin. The photographing device 1 transmits the facial image of the user P to the arithmetic and control device 2.

[0017] The arithmetic and control device 2 is, for example, a computer having a CPU, memory, etc., and the CPU executes the skin design sheet manufacturing program stored in the memory to realize the functions of an image receiving unit 201, an analysis unit 202, a skin design sheet data generating unit 203, a skin design sheet image generating unit 204, a simulation image generating unit 205, a display processing unit 206, and a print control unit 207, as shown in Fig. 2. Instead of storing all programs in the CPU or memory for each system, the server and the CPU of each system may be linked via a network to execute the programs, and data registration and management of user P's information, captured images, output images, etc. may be performed on the server side.

[0018] The storage unit 200 of the arithmetic and control unit 2 also stores a hue table that defines the correspondence between the transfer density ratio of the yellow dye contained in the yellow dye layer 12 and the magenta dye contained in the magenta dye layer 13 provided on the thermal transfer sheet 10 used in the printer 4 (described later) and the color (mixed color) to be created. The transfer density ratio may be the heating energy of each of the yellow dye layer 12 and the magenta dye layer 13.

[0019] Skin tones can be created by mixing yellow and magenta, and skin tones of different hues can be expressed by changing the transfer density ratio of the yellow dye and magenta dye. For example, as shown in Table 1, there are several skin tones with different hues, and the transfer density ratio of the yellow dye and magenta dye corresponding to each hue is measured in advance and defined in a hue table.

[0020] [Table 1]

[0021] The image receiving unit 201 of the arithmetic and control device 2 receives the face image of the user P from the photographing device 1.

[0022] The analysis unit 202 analyzes the facial image, identifies discolored areas such as blemishes and scratches, and calculates the position, shape, dimensions, etc. of the discolored areas. The analysis unit 22 also analyzes the hue of the skin (other than the discolored areas) and the hue of the discolored areas.

[0023] The skin design sheet data generation unit 203 generates data (design data) of a skin design sheet suitable for concealing the discolored part based on the analysis results of the position, shape, dimensions, etc. of the discolored part and the hue of the background and discolored part. The skin design sheet data includes, for example, the color, shape, dimensions, and color of the surrounding part of the concealed part. The color of the surrounding part may include a gradation (tone of density). The concealed part and the surrounding part may be different colors, or may be the same color with the concealed part having a higher light transmittance density. The colors of the concealed part and the surrounding part may be determined taking into account fashion and the age of user P.

[0024] The skin design sheet data generation unit 203 also references the hue table stored in the storage unit 200 to determine the transfer density ratio of the yellow dye and magenta dye to express the color of the hidden area and the peripheral area. For example, the transfer density ratio of the skin color closest to the color of the hidden area and the transfer density ratio of the skin color closest to the color of the peripheral area are extracted from the hue table. The skin design sheet data includes the transfer density ratios of the yellow dye and the magenta dye.

[0025] The skin design sheet data generation unit 203 normally sets the concealing portion to be positioned in the center of the skin design sheet. However, if the concealing portion is close to the nose or eyes, applying a skin design sheet with the concealing portion positioned in the center will result in the sheet covering the nose or eyes. Therefore, the skin design sheet generation unit 203 adjusts the size of the skin design sheet and the position of the concealing portion on the sheet based on the positional relationship between the discoloration portion and the nose or eyes. The skin design sheet data includes information such as the sheet size and the position of the concealing portion on the sheet.

[0026] The skin design sheet image generating unit 204 generates an image of the skin design sheet to be manufactured based on the data of the skin design sheet.

[0027] The simulation image generation unit 205 generates a simulation image of what would happen if a skin design sheet based on the data of the skin design sheet was attached to the face of user P. For example, the simulation image is generated by combining an image of the skin design sheet with the face image of user P based on the position of the discoloration area.

[0028] The display processing unit 206 displays the face image of user P, the image of the skin design sheet, and the simulation image on the display device 3. For example, the face image of user P as shown in Fig. 3a, the image of the skin design sheet 5 as shown in Fig. 3b, and the simulation image as shown in Fig. 3c are displayed on the display device 3. When user P checks the simulation image displayed on the display device 3 in which the discoloration part S on the face is concealed, he / she operates an operation unit (not shown) to instruct the start of production of the skin design sheet.

[0029] The user P may operate the operation unit while checking the simulation image to adjust the color and density of the skin design sheet, the position and size of the concealed part, etc. The adjustment results are reflected in the data of the skin design sheet.

[0030] When the print control unit 207 receives an instruction to start production, it transfers the data of the skin design sheet to the printer 4. The printer 4 performs printing processing based on the data of the skin design sheet and outputs the skin design sheet 5.

[0031] FIG. 4 is a schematic diagram of the printer 4, FIG. 5 is a plan view of a thermal transfer sheet 10 used in the printer 4, and FIG. 6 is a cross-sectional view of an image receiving sheet 20 used in the printer 4. As shown in FIG.

[0032] The thermal transfer sheet 10 is wound around a supply section 33, and is fed from the supply section 33, passes through the thermal head 31, and is wound around and collected by a collection section .

[0033] The thermal transfer sheet 10 is formed by a set of four panels (regions) formed in face order on one side of a long strip-shaped base sheet (not shown), from the recovery section 34 side: a transfer-type receiving layer 11, a yellow dye layer 12, a magenta dye layer 13, and a protective layer 15, and these sets are arranged repeatedly. The receiving layer 11 is a transparent layer that receives the dye that migrates from the thermal transfer sheet 10. The yellow dye layer 12 and the magenta dye layer 13 contain a binder resin and a sublimable dye. Known materials can be used for the receiving layer 11.

[0034] The sublimable dye contained in the yellow dye layer 12 is not particularly limited and may be appropriately selected from conventionally known sublimable dyes, with styryl dyes being preferred.The sublimable dye contained in the magenta dye layer 13 is not particularly limited and may be appropriately selected from conventionally known sublimable dyes, with azo dyes being preferred.

[0035] A transparent resin material can be used for the protective layer 15. Furthermore, the protective layer 15 is preferably matte with low surface reflectance to prevent shine when applied to the skin. Here, "matte" refers to a state with a glossiness of 40% or less. The glossiness is measured using a gloss meter at an incident angle of 45°.

[0036] The image receiving sheet 20 is unwound from an image receiving sheet roll 35 around which the image receiving sheet 20 is wound. The image receiving sheet roll 35 is attached to a reel part (not shown), and when the reel part is rotated (forward / reverse), the image receiving sheet roll 35 rotates, and the image receiving sheet 20 is unwound or wound.

[0037] The image-receiving sheet 20 has a release sheet 21, an adhesive layer 22, and a stretchable sheet 23 laminated in this order. The release sheet 21 can be a known release paper that has been treated with a silicone release agent or the like. The adhesive used for the adhesive layer 22 is preferably a urethane-based or acrylic-based adhesive that is less likely to cause rashes or inflammation on the skin. Furthermore, a gel-type adhesive is preferred to ensure close contact with the skin.

[0038] For example, a urethane film can be used for the stretchable sheet 23. In order for the stretchable sheet 23 to follow the expansion and contraction of the skin when attached, it is preferable that the stretchability be approximately 30% or more and 100% or less, and more preferably approximately 60%.

[0039] The elongation of a stretchable sheet is the elongation obtained using a test method in accordance with JIS-K-7127 (1999). The elongation can be calculated using the following formula (1). In formula (1), L is the length at which the stretchable sheet breaks (ruptures) when pulled at a speed of 200 mm / min using a tensile tester. L0 is the length before being pulled by the tensile tester. A Tensilon universal material testing machine or the like can be used as the tensile tester. Elongation (%) = 100 × (L - L0) / L0 (1)

[0040] The stretchable sheet 23 has a permeability of 1000 g / (m 2 It is preferable that the material has a moisture permeability of at least 24 hours.

[0041] Furthermore, the thickness of the stretchable sheet 23 is preferably 5 μm or more to prevent wrinkles from forming when the sheet is applied and to improve workability, and is preferably 30 μm or less to prevent any discomfort when the sheet is applied.

[0042] In the printer 4, a rotatable platen roll 32 is provided on the opposite side of the thermal head 31 with the thermal transfer sheet 10 sandwiched between them. The thermal head 31 and the platen roll 32 sandwich the image receiving sheet 20 and the thermal transfer sheet 10 and heat the thermal transfer sheet 10.

[0043] First, the thermal head 31 heats the transfer mold receiving layer 11 and transfers the receiving layer 11 onto the stretchable sheet 23 of the image receiving sheet 20, as shown in Figure 7a. Next, based on the transfer density ratio contained in the data of the skin design sheet, the yellow dye layer 12 and the magenta dye layer 13 are heated in sequence, transferring the dyes to the receiving layer 11 on the image receiving sheet 20 and forming a skin design sheet image G, as shown in Figure 7b. The skin design sheet image G includes a concealed portion and a peripheral portion.

[0044] Next, the protective layer 15 of the thermal transfer sheet 10 is heated, and the protective layer 15 is transferred onto the skin design sheet image G, as shown in Figure 7c. The image-receiving sheet 20 on which the image has been formed and the protective layer has been transferred is cut by a cutter 38 (see Figure 4) provided downstream based on the data of the skin design sheet, and the skin design sheet 5 is produced.

[0045] As shown in Figure 8, user P peels off the release sheet 21 from the prepared skin design sheet 5, aligns the concealing portion so that it covers the discolored portion S of the skin, and attaches the skin design sheet 5 to the skin using the adhesive layer 22. If user P's information is registered on the server, a composite image of user P's face image and the skin design sheet may be sent and displayed on user P's user terminal such as a personal computer or smartphone so that the position of the skin design sheet can be known, allowing the user P to confirm the position of the skin design sheet. The composite image may be displayed on the display device 3 to encourage the user to attach it on the spot, or the composite image may be printed and output on photographic paper.

[0046] As such, according to this embodiment, the skin design sheet 5 is produced on demand from a photographed image of user P, so the position, size, and shape of the concealing portion of the skin design sheet 5 correspond to the position, size, and shape of the discolored portion of the skin, and the color of the surrounding area of ​​the skin design sheet 5 matches the color of user P's natural skin, thereby reducing the sense of discomfort when the skin design sheet 5 is applied to the skin and resulting in a natural finish.

[0047] In addition, when the position of the concealing portion in the skin design sheet 5 is adjusted and the concealing portion is aligned with the discolored portion of the skin and attached, the skin design sheet 5 can be prevented from coming into contact with the eyes, nose, etc.

[0048] Furthermore, the thermal transfer sheet 10 is made up of a set of four panels (regions) formed in face-sequential order: a receiving layer 11, a yellow dye layer 12, a magenta dye layer 13, and a protective layer 15. Because the cyan dye layer panel is omitted, the number of panels constituting one set is smaller than in conventional thermal transfer sheets, which increases the speed at which skin design sheets can be produced, and also increases the number of skin design sheets that can be produced from one thermal transfer sheet, thereby reducing production costs.

[0049] In the above embodiment, the transfer-type receiving layer 11 provided on the thermal transfer sheet 10 used in the printer 4 may have a white receiving layer 11A and a transparent receiving layer 11B, as shown in Fig. 9. The white receiving layer 11A is formed by laminating a primer layer containing a white pigment such as titanium oxide and a transparent receiving layer.

[0050] 10a, a white receiving layer 11A is transferred to an area where a concealing portion is to be formed on the image-receiving sheet 20. A transparent receiving layer 11B is transferred to an area other than the concealing portion, that is, an area where a peripheral portion is to be formed.

[0051] As shown in Figure 10b, dye is transferred from the thermal transfer sheet 10 to the white receiving layer 11A and the transparent receiving layer 11B to form a skin design sheet image G. An image of the concealing portion is formed on the white receiving layer 11A. An image of the peripheral portion is formed on the transparent receiving layer 11B. Then, as shown in Figure 10c, a protective layer 15 is transferred to cover the skin design sheet image G, thereby producing the skin design sheet 5.

[0052] As shown in Figure 11, the release sheet 21 of the prepared skin design sheet 5 is peeled off, and the skin design sheet 5 is aligned so that the concealing portion formed in the white receiving layer 11A covers the discolored portion S of the skin, and then attached to the skin using the adhesive layer 22. By using the white receiving layer 11A, it is possible to suppress reflected light from the discolored portion S, increase the concealing ability of the discolored portion S, and improve the reproducibility of the desired skin color. Because a transparent receiving layer 11B is used in the peripheral portion, the transparency of the skin color is high, and the color difference between the skin design sheet 5 and the surrounding skin can be reduced.

[0053] The transparent receiving layer may contain particles that scatter light.

[0054] Fig. 12 is a schematic diagram of a printer 4 according to another embodiment. Fig. 13 is a plan view of a thermal transfer sheet 40 used in this printer 4, and Fig. 14 is a cross-sectional view of an intermediate transfer medium 50.

[0055] In the thermal transfer sheet 40, two panels (areas) of a yellow dye layer 42 and a magenta dye layer 43 are formed face-sequentially to form a set, and this set is arranged repeatedly. The thermal transfer sheet 10 is wound around a supply unit 63, and is unwound from the supply unit 63, passes through a thermal head 61, and is wound around and collected by a collection unit 64.

[0056] The intermediate transfer medium 50 has a cover sheet 51, a protective layer 52, and a receiving layer 53 laminated in this order. The cover sheet 51 has a substrate 51a and a release layer 51b provided on the substrate 51a, and the release layer 51b is in contact with the protective layer 52. The protective layer 52 and the receiving layer 53 may be the same as the protective layer 15 and the receiving layer 11 described above.

[0057] The base material 51a may be a plastic base material such as polyethylene terephthalate. The release layer 51b improves the releasability of the cover sheet 51 from the protective layer 52, and may be made of a component having releasability such as wax.

[0058] The thermal head 61 and platen roll 62 sandwich the intermediate transfer medium 50 and the thermal transfer sheet 40, and the thermal head 61 sequentially heats the yellow dye layer 42 and the magenta dye layer 43 based on the transfer density ratio of the data of the skin design sheet, transferring the dye to the receiving layer 53 of the intermediate transfer medium 50 and forming the skin design sheet image G, as shown in Figure 15.

[0059] The intermediate transfer medium 50 on which the skin design sheet image G has been formed is superimposed on the image receiving sheet 20 unwound from the image receiving sheet roll 66 and transported to the heat roller 67. As shown in Fig. 16, the image receiving sheet 20 and the intermediate transfer medium 50, which are superimposed so that the stretchable sheet 23 of the image receiving sheet 20 faces the receiving layer 53 of the intermediate transfer medium 50, are sandwiched and heated by the heat roller 67 to be integrated. Thereafter, the integrated image receiving sheet 20 and intermediate transfer medium 50 are cut by the cutter 68 to produce the skin design sheet 5A with a cover sheet.

[0060] 17, the user P peels off the release sheet 21 from the prepared skin design sheet 5A, aligns the concealing portion so that it covers the discolored area S of the skin, and attaches the skin design sheet 5A to the skin using the adhesive layer 22. Then, the cover sheet 51 is peeled off.

[0061] In this way, the skin design sheet 5A can be produced using the intermediate transfer medium 50 as well.

[0062] In the printer 4 shown in Figure 4, the receiving layer 11 is transferred onto the elastic sheet 23 of the image receiving sheet 20, a skin design sheet image G is formed on the receiving layer 11, a protective layer 15 is transferred onto the skin design sheet image G, and then cut with a cutter.However, as shown in Figure 18, after the protective layer 15 is transferred, the cover sheet 51 unwound from the cover sheet roll 69 and the image receiving sheet 20 can be integrated by being clamped and heated with a heat roller 67, and then cut with a cutter 68 to produce a skin design sheet 5B with a cover sheet.

[0063] Fig. 19 is a cross-sectional view of the cover sheet 51 being unwound from the cover sheet roll 69. Fig. 20 is a cross-sectional view of the skin design sheet 5B with the cover sheet.

[0064] In the above embodiment, an example was described in which a skin design sheet image was formed to match the user's skin tone using yellow dye and magenta dye, but as shown in Figure 21, instead of the yellow dye layer and magenta dye layer, a skin design sheet image may be formed using a thermal transfer sheet 10A equipped with a skin color layer 16 containing yellow dye and magenta dye and a brightness adjustment layer 17 that adjusts the brightness of the skin color. The skin color layer 16 contains yellow dye and magenta dye so that any of the multiple skin colors shown in Table 1 can be expressed, for example.

[0065] The yellow dye contained in the skin color layer 16 is a * -24 to -5, b * The magenta dye (Mg) contained in the skin color layer 16 is a dye having a * 11 to 81, b * The skin color layer 16 is a dye with a value of L * Yellow dye (Ye) with a value of 92-96 and L * It is preferable that the dye contains a magenta dye (Mg) having a molecular weight of 44 to 92 in a mixing ratio of Ye:Mg=0.5 to 0.6:0.4 to 0.5 (where Ye+Mg=1).

[0066] In the thermal transfer sheet 10A, four panels (areas) - a receiving layer 11, a skin color layer 16, a brightness adjustment layer 17, and a protective layer 15 - are formed in face-sequential order on one side of a base sheet (not shown), and each set is arranged repeatedly.

[0067] The brightness adjusting layer 17 is a layer containing, for example, a gray dye. * The dye is capable of lowering the value by 15 or more. In this case, the hue table in the memory unit 200 of the arithmetic and control device 2 defines the transfer density ratio of the skin color layer 16 and the brightness adjustment layer 17 corresponding to each hue of a plurality of skin colors. Based on the transfer density ratio defined in the hue table, a skin color dye (a dye obtained by mixing yellow dye and magenta dye) is transferred from the skin color layer 16 to the receiving layer, and a gray dye is transferred from the brightness adjustment layer 17 to the receiving layer, thereby forming a skin design sheet image that expresses a skin color of a desired tone.

[0068] The brightness adjusting layer 17 may be a layer containing a black pigment instead of a gray dye. The brightness of the skin color can be adjusted by adjusting the density or size of the fine halftone dots of the black pigment transferred from the brightness adjusting layer 17.

[0069] The brightness adjusting layer 17 may be a layer containing a dark skin-colored dye instead of a gray dye, that is, a skin-colored layer with low brightness.

[0070] It is more preferable that the lighter-lightness skin color layer contains a cyan dye (Cy). In this case, the hue table in the storage unit 200 of the arithmetic and control device 2 defines transfer density ratios between the skin color layer 16 (lighter skin color) and the lightness adjustment layer 17 (lighter skin color) corresponding to the hue and lightness of each of the multiple skin colors. Based on the transfer density ratios defined in the hue table, a skin color dye (a dye obtained by mixing a yellow dye (Ye) and a magenta dye (Mg)) is transferred from the skin color layer 16 to the receiving layer, and a lighter-lightness skin color dye (a dye obtained by mixing a yellow dye (Ye), a magenta dye (Mg), and a cyan dye (Cy)) is transferred from the lightness adjustment layer 17 to the receiving layer. This allows a skin design sheet image to be formed that expresses a desired skin color tone.

[0071] Here, the yellow dye (Ye) contained in the brightness adjusting layer (skin color layer with low brightness) is a * -24 to -5, b * The magenta dye (Mg) contained in the brightness adjusting layer is a dye having a * 11 to 81, b * The cyan dye (Cy) contained in the brightness adjusting layer is a dye having a * is -23 to -1, b * The lightness adjusting layer is a dye with a value of -42 to -5. * Yellow dye (Ye) with a value of 92-96, L * Magenta dye (Mg) with values ​​44-92, L * It is preferable that a cyan dye (Cy) having a Mg content of 54 to 95 is contained in the ink so that the mixing ratio of Ye:Mg=0.3 to 0.4:0.28 to 0.32 (where Ye+Mg+Cy=1).

[0072] As shown in FIG. 22, the receiving layer 11 of the thermal transfer sheet 10A may have a white receiving layer 11A and a transparent receiving layer 11B.

[0073] 12, instead of the thermal transfer sheet 40, a thermal transfer sheet 40A may be used in which a set of two panels (areas) of a skin color layer 46 and a brightness adjustment layer 47 are formed face-sequentially, and this set is repeatedly arranged, as shown in FIG. 23. The skin color layer 46 and the brightness adjustment layer 47 are the same as the skin color layer 16 and the brightness adjustment layer 17 described above.

[0074] In the above embodiment, the protective layers 15, 52 may contain an antibacterial agent including catechin, copper, silver, titanium, or the like.

[0075] In the above embodiment, an example was described in which the release sheet 21 is peeled off and the skin design sheet 5 is attached to the skin using the adhesive layer 22, but the skin design sheet 5 may be configured to be attached to the skin, and for example, the adhesive layer 22 may be made of a material that becomes adhesive when wetted with water. In this case, a water-soluble sheet may be provided instead of the release sheet 21.

[0076] In the above embodiment, an example was described in which the analysis unit 202 analyzed the hue of the discoloration area and the skin and calculated the position, shape, dimensions, etc. of the discoloration area, but the analysis unit 202 only needs to analyze at least the hue of the discoloration area and the skin. From the hue analysis results, a skin design sheet suitable for concealing the discoloration area can be manufactured. In this case, the user cuts the skin design sheet as needed for use. By the analysis unit 22 further calculating the dimensions and / or shape of the discoloration area, the size and shape of the concealing part of the manufactured skin design sheet correspond to the size and shape of the discoloration area on the skin, resulting in a skin design sheet that is easy for the user to use. By the analysis unit 202 further calculating the position of the discoloration area, the position of the concealing part in the skin design sheet can be adjusted, and a skin design sheet that reduces contact with the eyes, nose, etc. can be manufactured.

[0077] In the above embodiment, the part photographed by the photographing device 1 may be other than the face.

[0078] In the above embodiment, an example was described in which the photographing device 1 photographs the user P and generates a facial image, but the user P may prepare facial image data in advance and store it in a portable terminal such as a smartphone or a portable storage medium such as a USB memory, and then input the facial image data into the arithmetic and control device 2.

[0079] Although the present disclosure has been described in detail with reference to specific embodiments, it will be apparent to those skilled in the art that various modifications can be made without departing from the spirit and scope of the present disclosure. [Explanation of symbols]

[0080] 1. Imaging device 2. Arithmetic and control device 3 Display device 4 Printers 10, 40 Heat transfer sheet 11 Receptor 12 Yellow dye layer 13 Magenta dye layer 15 Protective layer 16 Skin Tone Layer 17 Brightness adjustment layer 20 Receiving sheet 50 Intermediate transfer medium 200 storage units 201 Image receiving unit 202 Analysis Department 203 Skin design sheet data generation unit 204 Skin design sheet image generation unit 205 Simulation image generation unit 206 Display processing section 207 Print control unit

Claims

1. A thermal transfer sheet for skin design printing, A thermal transfer sheet in which a set of a receiving layer, a first dye layer, a second dye layer and a protective layer are formed in face order on one side of a substrate sheet, and this set is repeatedly arranged.

2. 2. The thermal transfer sheet according to claim 1, wherein the first dye layer is a yellow dye layer and the second dye layer is a magenta dye layer.

3. 2. The thermal transfer sheet according to claim 1, wherein the first dye layer is a flesh-colored layer containing a yellow dye and a magenta dye, and the second dye layer is a gray dye layer.

4. 4. The thermal transfer sheet according to claim 1, wherein the receiving layer comprises a white receiving layer and a transparent receiving layer formed in face order.

5. an image-receiving sheet in which a release sheet, a pressure-sensitive adhesive layer, and a stretchable sheet are laminated in this order; A thermal transfer sheet according to any one of claims 1 to 4, A combination of an image receiving sheet and a thermal transfer sheet comprising:

6. an imaging device that captures an image of the user's skin including the discolored portion and generates a captured image; an analysis unit that analyzes the hue of the discolored portion from the captured image; A skin design sheet data generation unit that generates data for a skin design sheet that conceals the discoloration portion using the analysis results of the analysis unit; A printer that transfers dye from a thermal transfer sheet to a receiving layer based on data of the skin design sheet to form an image, and produces a skin design sheet including the receiving layer on which the image is formed; Equipped with The printer heats the thermal transfer sheet according to any one of claims 1 to 4, transferring the receiving layer onto the stretchable sheet of an image receiving sheet having a release sheet, a pressure-sensitive adhesive layer, and a stretchable sheet laminated in this order; Dyes are transferred from the first dye layer and the second dye layer to the transferred receptor layer to form the image; A skin design sheet manufacturing system that produces the skin design sheet by transferring the protective layer onto the receiving layer on which the image is formed.

7. an imaging device that captures an image of the user's skin including the discolored portion and generates a captured image; an analysis unit that analyzes the hue of the discolored portion from the captured image; A skin design sheet data generation unit that generates data for a skin design sheet that conceals the discoloration portion using the analysis results of the analysis unit; A printer that transfers dye from a thermal transfer sheet to a receiving layer based on data of the skin design sheet to form an image, and produces a skin design sheet including the receiving layer on which the image is formed; Equipped with The printer heats a thermal transfer sheet on which a set of two panels, each of which is a first dye layer and a second dye layer, is repeatedly arranged, and a cover sheet, a protective layer, and the receiving layer are laminated in this order, and the cover sheet is peelable from the protective layer. The image is formed by transferring dyes from the first dye layer and the second dye layer to the receiving layer of the intermediate transfer medium. A skin design sheet manufacturing system that produces the skin design sheet by superimposing and integrating an intermediate transfer medium having an image formed on the receiving layer and an image receiving sheet having a release sheet, an adhesive layer, and an elastic sheet laminated in this order.

8. a storage unit for storing a hue table that defines a plurality of skin colors with different hues and transfer density ratios between the first dye layer and the second dye layer corresponding to each hue; the skin design sheet data generation unit determines a transfer density ratio between the first dye layer and the second dye layer by referring to the hue table, and generates data of the skin design sheet including the determined transfer density ratio; 8. The skin design sheet manufacturing system according to claim 6, wherein the printer heats the first dye layer and the second dye layer based on the transfer density ratio included in the data of the skin design sheet.

9. taking an image of the user's skin including the discoloration using an imaging device to generate a captured image; A process of analyzing the hue of the discolored portion from the photographed image using an arithmetic and control device, and generating data for a texture design sheet that conceals the discolored portion based on the analysis result; A process of forming an image by transferring dye from a thermal transfer sheet to a receiving layer using a printer based on data of the skin design sheet, and producing a skin design sheet including the receiving layer on which the image is formed; Equipped with The printer heats the thermal transfer sheet according to any one of claims 1 to 4, transfers the receiving layer onto the stretchable sheet of an image receiving sheet in which a release sheet, an adhesive layer, and a stretchable sheet are laminated in this order, transfers dyes from the first dye layer and the second dye layer to the transferred receiving layer to form the image, and transfers the protective layer onto the receiving layer on which the image has been formed, thereby producing the skin design sheet.

10. taking an image of the user's skin including the discoloration using an imaging device to generate a captured image; A process of analyzing the hue of the discolored portion from the photographed image using an arithmetic and control device, and generating data for a texture design sheet that conceals the discolored portion based on the analysis result; A process of forming an image by transferring dye from a thermal transfer sheet to a receiving layer using a printer based on data of the skin design sheet, and producing a skin design sheet including the receiving layer on which the image is formed; Equipped with The printer heats the thermal transfer sheet in which a set of two dye layers, a first dye layer and a second dye layer, formed in face-sequential order is arranged repeatedly, a cover sheet, a protective layer, and the receiving layer are laminated in this order, and the cover sheet is peelable from the protective layer. The image is formed by transferring dyes from the first dye layer and the second dye layer to the receiving layer of the intermediate transfer medium. A method for manufacturing a skin design sheet, comprising superimposing and integrating an intermediate transfer medium having an image formed on the receiving layer and an image receiving sheet having a release sheet, an adhesive layer and an elastic sheet laminated in this order, to produce the skin design sheet.

11. The arithmetic and control device determines the transfer density ratio of the first dye layer and the second dye layer by referring to a hue table that defines a plurality of skin colors having different hues and the transfer density ratio of the first dye layer and the second dye layer corresponding to each hue, and generates data of the skin design sheet including the determined transfer density ratio; The method for manufacturing a skin design sheet according to claim 9 or 10, wherein the printer heats the first dye layer and the second dye layer based on the transfer density ratio included in the data of the skin design sheet.

Images