WO2018056395A1 - 熱転写シート、印画物の製造方法、及びゲーム機 - Google Patents

熱転写シート、印画物の製造方法、及びゲーム機 Download PDF

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Publication number
WO2018056395A1
WO2018056395A1 PCT/JP2017/034278 JP2017034278W WO2018056395A1 WO 2018056395 A1 WO2018056395 A1 WO 2018056395A1 JP 2017034278 W JP2017034278 W JP 2017034278W WO 2018056395 A1 WO2018056395 A1 WO 2018056395A1
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WO
WIPO (PCT)
Prior art keywords
layer
thermal transfer
color material
transfer sheet
image
Prior art date
Application number
PCT/JP2017/034278
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
泰史 米山
雅行 谷
Original Assignee
大日本印刷株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 大日本印刷株式会社 filed Critical 大日本印刷株式会社
Priority to KR1020197003284A priority Critical patent/KR102219468B1/ko
Priority to CN201780048751.2A priority patent/CN109562631B/zh
Priority to JP2018540313A priority patent/JP6443597B2/ja
Publication of WO2018056395A1 publication Critical patent/WO2018056395A1/ja

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
    • A63F13/25—Output arrangements for video game devices
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
    • A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
    • A63F13/90—Constructional details or arrangements of video game devices not provided for in groups A63F13/20 or A63F13/25, e.g. housing, wiring, connections or cabinets
    • A63F13/95—Storage media specially adapted for storing game information, e.g. video game cartridges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J17/00—Mechanisms for manipulating page-width impression-transfer material, e.g. carbon paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/382—Contact thermal transfer or sublimation processes
    • B41M5/385—Contact thermal transfer or sublimation processes characterised by the transferable dyes or pigments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/46—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography characterised by the light-to-heat converting means; characterised by the heat or radiation filtering or absorbing means or layers
    • B41M5/465—Infrared radiation-absorbing materials, e.g. dyes, metals, silicates, C black
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/20—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof characterised by a particular use or purpose
    • B42D25/26—Entrance cards; Admission tickets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
    • B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
    • B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
    • B42D25/30—Identification or security features, e.g. for preventing forgery
    • B42D25/36—Identification or security features, e.g. for preventing forgery comprising special materials
    • B42D25/378—Special inks
    • B42D25/382—Special inks absorbing or reflecting infrared light

Definitions

  • the present invention relates to a thermal transfer sheet, a method for producing a printed material, a combination of a thermal transfer sheet and a thermal transfer printer, a thermal transfer printer, and a game machine.
  • An arcade game machine that reads code information printed on a card and uses the read code information to execute a game is known as one of game machines installed and used in game centers and commercial facilities. Yes. On the cards used in these arcade game machines, character information reproduced on the arcade game machine, name and status, and code information such as a two-dimensional code are printed, and the code information defines the character. It has information to do.
  • Patent Literature 1 discloses a communication unit that executes a game by a user's operation and receives game result information from a portable terminal that stores the result of the executed game, and a memory that stores data of a plurality of character images.
  • Game card printing device provided with a printer that prints on photographic paper and outputs a game card, the game card printing device, an input unit that receives operations, a display unit that displays a game screen, and code information printed on the game card
  • a reading unit for reading the bill, a charging unit for identifying and counting the inserted money, and the code information read Has a reproduction unit for reproducing the character in the game based on the arcade game system which executes a game with the introduction of a predetermined amount has been proposed.
  • the arcade game machine uses a card on which a visible image showing a character or the like and an invisible image as code information for defining the character or the like are printed.
  • a card having such an invisible image (sometimes referred to as a printed matter) is required to have a function capable of accurately detecting the invisible image using an infrared scanner or the like.
  • the present invention has been made in view of such circumstances, and provides an invisible image and a thermal transfer sheet for obtaining a printed matter that has a visible image and can accurately detect the invisible image.
  • a main object is to provide a method for producing a printed material for forming the printed material, a combination of a thermal transfer sheet and a thermal transfer printer, a thermal transfer printer, and a game machine including the thermal transfer printer.
  • the present invention for solving the above problems is a thermal transfer sheet provided with a color material layer, and an infrared absorption material-containing layer containing an infrared absorption material on one surface of the substrate, and a color material containing a color material
  • the layers are provided in the surface order, and the maximum reflectance in the wavelength range of 750 nm to 1400 nm of the color material layer is 50% or more.
  • the maximum reflectance of the color material layer of the thermal transfer sheet in the wavelength range of 750 nm to 1400 nm is preferably 80% or more.
  • this invention for solving the said subject is a thermal transfer sheet provided with a color material layer, Comprising: On one surface of a base material, the infrared rays absorption material containing layer containing an infrared rays absorption material, and a color material are contained.
  • a color material layer is provided in the surface order, and the color material layer contains, as the color material, one color material having a maximum reflectance of 80% or more in a wavelength range of 750 nm to 1400 nm, and the color The material layer does not contain, as the color material, (1) another color material having a maximum reflectance of less than 10% in a wavelength range of 750 nm to 1400 nm, or (2) a wavelength range of 750 nm to 1400 nm. Even in the case where the maximum reflectance of the colorant is less than 10%, the content is less than 15% by mass with respect to the total mass of the colorant.
  • the infrared absorbing material-containing layer, the transfer layer, and the color material layer are provided on one surface of the base material in the surface order, and the transfer layer is a single layer structure including only the receiving layer. Or it is good also as a laminated structure in which the said receiving layer is located nearest to the said base material.
  • the present invention for solving the above problems is a thermal transfer sheet used for forming a thermal transfer image on a special image containing an infrared absorbing material, and a color material is provided on one surface of a substrate.
  • a color material layer to be contained is provided, and the color material layer has a maximum reflectance of 50% or more in a wavelength range of 750 nm to 1400 nm.
  • the transfer layer and the color material layer are provided on one surface of the base material in the surface order, and the transfer layer is formed from a single layer structure including only a receiving layer, or from the base material. It is good also as a laminated structure in which the said receiving layer is located nearest.
  • the infrared absorbing material-containing layer may contain a diimonium compound.
  • this invention for solving the said subject is a manufacturing method of a printed matter, Comprising: The to-be-transferred body preparation process which prepares a to-be-transferred body, and contains an infrared rays absorption material on one surface of a base material A thermal transfer sheet preparation step of preparing a thermal transfer sheet in which an infrared absorbing material-containing layer and a color material layer containing a color material are provided in a surface sequence; and on one surface of the transferred body, the thermal transfer sheet A special image forming step of transferring the infrared absorbing material-containing layer to form a special image containing the infrared absorbing material; and thermal transfer by thermally transferring the color material layer of the thermal transfer sheet onto one surface of the transfer target. And a thermal transfer image forming step of forming an image, wherein the color material layer has a maximum reflectance of 50% or more in a wavelength range of 750 nm to 1400 nm.
  • the thermal transfer sheet prepared in the thermal transfer sheet preparation step has an infrared absorbing material-containing layer containing an infrared absorbing material, a transfer layer, and a coloring material layer containing a coloring material on one side of the substrate.
  • the thermal transfer sheets are sequentially provided, and the transfer layer has a single-layer structure including only a receiving layer or a laminated structure in which the receiving layer is located closest to the substrate, and the special image formation
  • a step of thermally transferring the color material layer of the thermal transfer sheet to form a thermal transfer image on the layer may be used.
  • the transfer layer transfer step may be a step of transferring the transfer layer so as to cover the entire surface of the special image and the one surface of the transfer target.
  • the present invention for solving the above-mentioned problems is a combination of a thermal transfer sheet and a thermal transfer printer, wherein the thermal transfer sheet is the thermal transfer sheet described above.
  • the present invention for solving the above-described problems is a thermal transfer printer loaded with a thermal transfer sheet and a transfer target, and transporting the loaded thermal transfer sheet and the transfer target along a transport path.
  • Means, a platen roller disposed in a conveyance path between the thermal transfer sheet and the transfer object, and a thermal head for applying energy to the thermal transfer sheet, and the thermal transfer sheet is It is a thermal transfer sheet.
  • the present invention for solving the above-mentioned problems is a game machine incorporating a thermal transfer printer, wherein a game execution means for executing a game function and a thermal transfer reflecting the execution result of the game function by the game execution means
  • the game machine further includes identification means for identifying information recorded in a thermal transfer image containing an infrared absorbing material, and the game execution means includes information on the thermal transfer image identified by the identification means. Based on this, the game function may be executed.
  • the method for producing a printed matter the combination of the thermal transfer printer and the thermal transfer sheet, the thermal transfer printer, and the game machine, the invisible image and the visible image can be detected and the invisible image can be accurately detected. Possible prints can be formed.
  • FIG. 5 is a process diagram for explaining a method for producing a printed material according to an embodiment, wherein (a) to (d) are all schematic cross-sectional views.
  • FIG. 5 is a process diagram for explaining a method for producing a printed material according to an embodiment, wherein (a) to (d) are all schematic cross-sectional views.
  • FIG. 5 is a process diagram for explaining a method for producing a printed material according to an embodiment, wherein (a) to (d) are all schematic cross-sectional views.
  • FIG. 4 is a process diagram for explaining a method for producing a printed material according to an embodiment, and (a) to (e) are all schematic cross-sectional views. It is the schematic of the game machine of one Embodiment.
  • the thermal transfer sheet of one embodiment of the present invention (hereinafter sometimes referred to as a thermal transfer sheet of one embodiment)
  • a thermal transfer sheet of one embodiment On one surface of the substrate 1, an infrared absorbing material-containing layer 2 and a color material layer 3 are provided in the surface order.
  • the thermal transfer sheet 10 in the form shown in FIG. 1A includes a single color material layer 3, and the thermal transfer sheet 10 in the form shown in FIG. 1B has a plurality of color material layers (in the form shown in the figure). Are provided with a color material layer 3Y, a color material layer 3M, and a color material layer 3C).
  • the thermal transfer sheet 10 having the configuration shown in FIG. 2B has an infrared absorbing material-containing layer 2, a first transfer layer (5), and a color material layer on one surface of the substrate 1. 3.
  • the second transfer layer (7) is provided in a surface sequential manner.
  • the base material 1, the infrared ray absorbing material-containing layer 2, and the color material layer 3 are essential components in the thermal transfer sheet 10 of one embodiment, and the first transfer layer (5) and the second transfer layer (7) This is an arbitrary configuration in the thermal transfer sheet 10 of one embodiment. Each configuration will be specifically described below.
  • the substrate 1 is not limited in any way, and any conventionally known one in the field of thermal transfer sheets can be appropriately selected and used. Examples include polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polyphenylene sulfide, polyether ketone or polyether sulfone and other highly heat-resistant polyesters, polypropylene, polycarbonate, cellulose acetate, polyethylene derivatives, polyvinyl chloride, polyvinyl chloride Examples thereof include stretched or unstretched films of plastics such as vinylidene, polystyrene, polyamide, polyimide, polymethylpentene, or ionomer. Moreover, the composite film which laminated
  • the base material 1 may contain additives, such as a filler, a plasticizer, a coloring agent, and an antistatic agent, as needed. Although there is no limitation in particular about the thickness of the base material 1, It is preferable that it is the range of 2 micrometers or more and 10 micrometers or less.
  • an infrared absorbing material-containing layer 2 is provided on one surface of the substrate 1 (in the illustrated form, the upper surface of the substrate 1).
  • the infrared absorbing material-containing layer 2 contains an infrared absorbing material as an essential component.
  • the infrared absorbing material referred to in this specification means a material that absorbs infrared light.
  • the thermal transfer sheet 10 and the transfer target 100 are overlapped, and the infrared absorbing material-containing layer 2 is melt-transferred onto the transfer target 100, thereby transferring the transfer target.
  • an image 50A containing an infrared absorbing material that cannot be visually recognized under visible light or is difficult to visually recognize and can be recognized under infrared light can be formed (see FIG. 7).
  • an image containing an infrared absorbing material may be referred to as a “special image”.
  • the “special image” can also be referred to as an invisible image.
  • infrared light region means a wavelength region of 750 nm to 2500 nm.
  • the “visible light region” means a wavelength region that is greater than 400 nm and less than 750 nm.
  • near infrared light region described later means a wavelength region of 750 nm to 1400 nm.
  • infrared absorbing materials include diimonium compounds, aminium compounds, phthalocyanine compounds, dithiol organometallic complexes, cyanine compounds, azo compounds, polymethine compounds, quinone compounds, naphthoquinone compounds, diphenylmethane compounds, Examples thereof include triphenylmethane compounds, oxole compounds, and carbon black.
  • the infrared absorbing material-containing layer 2 may contain one of these infrared absorbing materials alone, or may contain two or more.
  • the infrared absorbing material-containing layer 2 containing a diimonium-based compound or a cyanine-based compound is used, a color material layer described later is formed on a special image obtained by melt-transferring the infrared absorbing material-containing layer 2. It can be said that it is a preferred infrared absorbing material in that when it is used to form a thermal transfer image, it does not adversely affect the light resistance and plasticizer resistance of the thermal transfer image.
  • the diimonium compound include a diimonium salt of bis (trifluoromethanesulfonyl) imidic acid.
  • the infrared absorbing material-containing layer 2 may contain a binder resin together with the infrared absorbing material.
  • the binder resin include polyester resins, polyvinyl resins, fluorine resins, polystyrene resins, polyacrylic resins, cellulose resins, polycarbonate resins, polyamide resins, polypropylene resins, and other polyolefin resins, polyvinyl alcohol.
  • Well-known resins such as resin, polyimide resin, phenol resin and polyurethane resin can be mentioned.
  • the infrared absorbing material-containing layer 2 may contain various additives.
  • the additive include a compound having a hue, such as an organic pigment and an inorganic pigment.
  • organic pigments include chromatic pigments such as yellow, magenta, and cyan, and hollow particles.
  • inorganic pigments include silica, titanium oxide, titanium dioxide, zinc oxide, cerium oxide, titanium mica, muscovite, white carbon, calcium carbonate, barium sulfate, alumina white, and talc.
  • a core / shell pigment in which a core made of an inorganic pigment is covered with a shell made of an organic pigment can be used.
  • organic dyes such as yellow dyes, magenta dyes, and cyan dyes can be used.
  • the to-be-transferred body 100 in which the special image 50A is formed generally exhibits a white color, the confidentiality of the special image 50A when the white-colored transfer target 100 is used is further improved.
  • a white compound such as titanium oxide or calcium carbonate as the additive.
  • titanium oxide is particularly preferable.
  • the thermal transfer sheet 10 used in the combination of one embodiment has a configuration in which the infrared absorbing material-containing layer 2 and the color material layer 3 are provided in the surface order on one surface of the substrate 1.
  • the infrared absorbing material-containing layer 2 in a preferred form contains a pigment, an organic dye different from the hue of the color material layer 3, and the like together with the infrared absorbing material.
  • the hue of the infrared absorbing material-containing layer 2 and the color material layer 3 can be made different, and the infrared absorbing material-containing layer 2 is accurately detected in the thermal transfer printer. be able to.
  • content of the said additive is the range of 0.1 mass% or more and 80 mass% or less with respect to the gross mass of the infrared rays absorption material content layer 2, Preferably it is 5 mass% or more and 40 It is the range of the mass% or less.
  • the infrared absorbing material-containing layer 2 is changed into a layer 2 A containing an infrared absorbing material and a hue of the pigment or the color material layer 3.
  • the detection accuracy of the infrared ray absorbing material-containing layer 2 in the thermal transfer printer can be improved.
  • the layer 2A containing the infrared-absorbing material may be positioned closest to the substrate 1 as shown in FIG. As shown in b), it may be positioned farthest from the base material 1, and as shown in FIGS. 6C and 6D, the infrared absorbing material-containing layer 2 is replaced with the layer 2A containing the infrared absorbing material.
  • a layered structure including the pigment-containing layer 2B and one or two or more arbitrary layers 2C may be provided, and the layer 2A containing the infrared absorbing material may be positioned between any of the layers. The same applies to the layer 2B containing the pigment.
  • the layer 2B containing a pigment contains at least one of the organic pigments and inorganic pigments exemplified above, and additives such as a binder as necessary.
  • the binder include ethylene-vinyl acetate copolymer, ethylene-acrylic ester copolymer, polyethylene, polystyrene, vinyl chloride resin, vinyl chloride-vinyl acetate copolymer, polyvinyl alcohol, vinylidene chloride resin, acrylic resin, Examples thereof include methacrylic resin, polyamide, polycarbonate, fluororesin, polyvinyl formal, polyvinyl butyral, acetyl cellulose, nitrocellulose, polyvinyl acetate, polyisobutylene, ethyl cellulose, and polyacetal.
  • waxes such as various low molecular weight polyethylenes, shellac waxes, candelilla waxes, petrolactams, polyester waxes, partially modified waxes, fatty acid esters, and fatty acid amides can also be used.
  • the thickness of the layer 2B containing the pigment is not particularly limited, but is preferably in the range of 0.1 ⁇ m to 5 ⁇ m, and more preferably in the range of 0.5 ⁇ m to 1.5 ⁇ m.
  • the layer 2B containing the pigment may be a layer 2B containing an organic dye.
  • a color material layer 3 described later can be appropriately selected and used.
  • the thickness of the infrared rays absorption material content layer 2 It is preferable that it is the range of 0.1 micrometer or more and 5 micrometers or less.
  • the thickness of the infrared-absorbing material-containing layer 2 By setting the thickness of the infrared-absorbing material-containing layer 2 within a preferable range, a special image 50A that can be sufficiently identified with infrared light can be formed.
  • the thickness of the infrared absorbing material-containing layer 2 is made too thin, the detection performance when detecting the special image 50A formed using the infrared absorbing material-containing layer 2 tends to be lowered. .
  • tailing or character collapse tends to occur when the infrared absorbing material-containing layer 2 is transferred onto the transfer target.
  • the tailing referred to in the specification of the present application is such that when the transfer layer is transferred onto the transfer target, the boundary between the transfer region and the non-transfer region of the transfer layer starts from the boundary and protrudes from the boundary to the non-transfer region side. This means the phenomenon that the transfer layer is transferred to the surface.
  • character collapse referred to in the present specification means that a transfer target region surrounded or sandwiched between transfer regions represented as characters is transferred by a phenomenon similar to tailing, and the original character is reproduced. It means a phenomenon that has not been done.
  • the infrared absorption material containing layer 2 which disperse
  • the coating liquid can be prepared, and this coating liquid can be formed by applying and drying the base material 1 or an arbitrary layer provided on the base material 1.
  • the application method of the coating liquid for the infrared absorbing material-containing layer and a conventionally known application method can be appropriately selected and used.
  • the coating method include a gravure printing method, a screen printing method, a reverse coating method using a gravure plate, and the like.
  • the coating method other than this can also be used. This is the same also about the coating method of the various coating liquid mentioned later.
  • a releasing layer (not shown) may be provided between the substrate 1 and the infrared absorbing material-containing layer 2.
  • the release layer is a layer that remains on the substrate 1 side when the infrared absorbing material-containing layer 2 is transferred onto the transfer target 100.
  • the release layer material include various waxes such as silicone wax, silicone resin, silicone-modified resin, fluororesin, acrylic resin, polyvinyl alcohol, cellulose derivative resin and other resins, and mixtures thereof. Can be mentioned.
  • the thickness of the release layer is usually in the range of 0.5 ⁇ m to 5 ⁇ m.
  • a color material layer 3 is provided on one surface of a substrate 1 in the surface order with the infrared absorbing material-containing layer 2.
  • the color material layer 3 contains a color material that absorbs a wavelength in the visible light region and a binder resin.
  • the thermal transfer image 50B formed using the thermal transfer sheet 10 of one embodiment is monochromatic, only one color layer selected as appropriate may be formed as shown in FIG. In the case of a full color image, as shown in FIG.
  • the material layer 3 ⁇ / b> C may be repeatedly formed in the surface order on the same surface of the substrate 1.
  • the color material referred to in the present specification is a concept including dyes such as sublimation dyes and fluorescent dyes, pigments and the like.
  • a special image using the infrared-absorbing material-containing layer 2 on one surface of the transferred body 100 by combining the thermal transfer sheet 10 of the embodiment and the transferred body 100.
  • the special image 50A containing the infrared absorbing material and the thermal transfer containing the color material are formed on one surface of the transfer object 100.
  • the printed matter 200 provided with the image 50B can be obtained.
  • the detection of the special image 50A in the printed matter 200 formed using the thermal transfer sheet 10 of the embodiment is performed, for example, by irradiating the printed matter 200 with infrared rays, and the infrared absorbing material contained in the special image 50A absorbs infrared rays. It is possible to use a method that utilizes optical characteristics depending on the degree of absorption of infrared rays. Examples of the detector for the special image 50A include an infrared scanner.
  • the thermal transfer image 50B formed using the color material layer of the thermal transfer sheet is an image having high absorbability with respect to wavelengths in the near infrared light region and the infrared light region, in other words, the thermal transfer image.
  • the color material layer for forming 50B is a color material layer having high absorption with respect to the near-infrared light region and the wavelength in the infrared light region
  • detection of the special image 50A using the infrared scanner or the like Sometimes the thermal transfer image 50B is detected together with the special image 50A, and the thermal transfer image 50B formed using a color material layer having high absorbability with respect to wavelengths in the near infrared light region and infrared light region is special. This may affect the detection of the image 50A and cause a problem that the special image 50A cannot be detected accurately.
  • the color material layer 3 of the first embodiment is characterized in that the maximum reflectance in the wavelength range of 750 nm to 1400 nm of the color material layer is 50% or more.
  • the maximum reflectance in the wavelength range of 750 nm to 1400 nm in the specification of the present application means that the reflectance of the color material layer in the wavelength range of 750 nm to 1400 nm is measured. It means the maximum reflectance. That is, when the reflectance of the color material layer is measured, the reflectance of the color material layer only needs to be 50% or more in any wavelength region with a wavelength of 750 nm to 1400 nm.
  • the thermal transfer image 50B formed using the color material layer 3 does not affect the detectability of the special image 50A containing the infrared absorbing material, or , The degree of the influence can be reduced. That is, according to the thermal transfer sheet 10 of the embodiment including the color material layer 3 of the first embodiment, the special image 50A is accurately detected by using an infrared scanner or the like with the special image 50A and the thermal transfer image 50B. A print can be obtained.
  • the wavelength region in which the maximum reflectance of the color material layer is 50% or more is a near infrared light region having a wavelength range of 750 nm to 1400 nm.
  • the maximum reflectance of the color material layer 3 in the wavelength range of 750 nm or more and 1400 nm or less tends to affect the detectability of the special image 50A containing the infrared absorbing material, and the maximum reflectance of the color material layer 3 in the infrared light region is increased. Even if it is 50% or more, it is because the detectability of the special image 50A cannot be sufficiently increased unless the maximum reflectance of the color material layer 3 in the near infrared light region is 50% or more.
  • the color material layer 3 of the first embodiment may further have a wavelength region having a reflectance of 50% or more in a range of greater than 1400 nm and less than or equal to 2500 nm.
  • a special image 50A including an infrared absorbing material is detected using an infrared scanner or the like.
  • the problem that the thermal transfer image 50B is detected together with the special image 50A and the problem that the thermal transfer image 50B affects the detectability of the special image 50A and the special image 50A cannot be detected easily are likely to occur.
  • the color material layer 3 of the preferred first embodiment has a maximum reflectance of 80% or more in the wavelength range of 750 nm to 1400 nm. According to the color material layer 3 of the first preferred embodiment, it is possible to further improve the detectability when detecting the special image 50A including the infrared absorbing material using an infrared scanner or the like.
  • the color material layer of the first embodiment is preferable in the case where the thermal transfer image 50B is formed on the special image 50A including the infrared absorbing material, and the special image 50A is detected using a sensor that detects a wavelength of 830 nm.
  • No. 3 has a reflectance of 50% or more, particularly 80% or more at any wavelength within the wavelength range of 750 nm or more and 950 nm or less, and more preferably in the whole range of 750 nm or more and 950 nm or less.
  • the reflectance is 50% or more, particularly 80% or more.
  • the reflectance of the color material layer as used in this specification means the reflectance measured by the following method.
  • a solid image of 255/255 gradations (energy gradations) is formed on the transfer target using the color material layer that is the measurement target.
  • the baseline is measured in advance on the transfer object before the solid image is formed.
  • the reflectance in the range of 750 nm to 1400 nm of the solid image is measured using a reflectance meter.
  • an ultraviolet-visible near-infrared spectrophotometer UV-3100PC manufactured by Shimadzu Corporation was used.
  • the maximum reflection in the range of 750 nm to 1400 nm of the color material layer to be measured It can be said that the rate is 50% or more.
  • the color material contained in the color material layer 3 of the first embodiment is not limited in any way, and satisfies the condition that the maximum reflectance in the wavelength range of 750 nm to 1400 nm of the color material layer 3 portion is 50% or more. It can be set as appropriate within the range.
  • the color material layer 3 of the first embodiment as an example contains a color material and a binder resin.
  • Examples of the color material contained in the color material layer 3 of the first embodiment include a diarylmethane dye, a triarylmethane dye, a thiazole dye, a merocyanine dye, a pyrazolone dye, a methine dye, an indoaniline dye, and a pyrazolomethine.
  • Azomethine dyes such as acetophenone azomethine, pyrazoloazomethine, imidazolazomethine, imidazoazomethine, pyridone azomethine, xanthene dyes, oxazine dyes, cyanostyrene dyes such as dicyanostyrene, tricyanostyrene, thiazine dyes, Azine dyes, acridine dyes, benzene azo dyes, pyridone azo, thiophenazo, isothiazole azo, pyrrole azo, pyrazole azo, imidazole azo, thiadiazole azo, triazole azo, disazo azo dyes , Spiropyran dyes, India Linos Piropi run dyes, fluoran dye, rhodamine lactam-based dyes, naphthoquinone dyes, anthraquinone dyes, quinophthalone dye
  • red dyes such as MSRedG (Mitsui Toatsu Chemical Co., Ltd.), Macrolex Red Violet R (Bayer), Ceres Red 7B (Bayer), Samalon Red F3BS (Mitsubishi Chemical Corporation), etc.
  • Holon Brilliant Yellow dyes such as Yellow 6GL (Clariant), PTY-52 (Mitsubishi Chemical Corporation), Macrolex Yellow 6G (Bayer Co.), Kayaset (registered trademark) Blue 714 (Nippon Kayaku), Holon Brilliant Blue SR (Clariant), MS Blue 100 (Mitsui Toatsu Chemicals), C.I. I.
  • blue dyes such as Solvent Blue 63.
  • the color material layer 3 of the first embodiment may contain one kind alone as a color material, or may contain two or more kinds.
  • the color material layer 3 of the first preferred embodiment contains a color material having a maximum reflectance of 80% or more in the wavelength range of 750 nm or more and 1400 nm or less (hereinafter sometimes referred to as “1 color material”). . According to the color material layer 3 of the first preferred embodiment, it is possible to further improve the maximum reflectance in the wavelength range of 750 nm to 1400 nm.
  • Examples of the “1 colorant” having a maximum reflectance of 80% or more in the wavelength range of 750 nm to 1400 nm include anthraquinone dyes and cyanomethylene dyes.
  • the color material layer 3 of the preferred first embodiment is (1) a color material having a maximum reflectance of less than 10% in a wavelength range of 750 nm to 1400 nm (hereinafter, this color material is referred to as “other color material”). Or (2) “other color material” is contained in a range of less than 15% by mass with respect to the total mass of the color material. According to the color material layer 3 of the first preferred embodiment, it is possible to suppress a decrease in the maximum reflectance of the color material layer 3 in the wavelength range of 750 nm to 1400 nm, and the color material layer wavelength range of 750 nm to 1400 nm. The maximum reflectance in can be 50% or more.
  • Examples of “other colorants” having a maximum reflectance of less than 10% in a wavelength range of 750 nm to 1400 nm include indoaniline dyes.
  • Preferred color material layer 3 of the first embodiment may contain one kind of “one color material” as a color material, or may contain two or more kinds.
  • one type of “other color material” may be included as a color material, and two or more types of “other color material” may be included together with “1 color material”.
  • you may contain the color material whose maximum reflectance in the wavelength range of 750 nm or more and 1400 nm or less is 10% or more and less than 80%. The same applies to the color material layer 3 of the second embodiment.
  • the content of the color material contained in the color material layer 3 of the first embodiment is not particularly limited, and is appropriately set according to the image density required for the thermal transfer image 50B, the content of a binder resin described later, and the like. Can do.
  • the content of the color material (the total content of all the color materials) is in the range of 5% by mass to 300% by mass with respect to the total mass of the binder resin. The same applies to the color material layer 3 of the second embodiment described later.
  • the binder resin contained in the color material layer 3 of the first embodiment is not particularly limited, and a resin having a certain degree of heat resistance and having a moderate affinity with a sublimation dye is appropriately selected and used. Can do.
  • binder resins include cellulose resins such as nitrocellulose, cellulose acetate butyrate, and cellulose acetate propionate; vinyl resins such as polyvinyl acetate, polyvinyl butyral, and polyvinyl acetal; poly (meth) acrylate, An acrylic resin such as poly (meth) acrylamide; a polyurethane resin; a polyamide resin; a polyester resin;
  • the content of the binder resin with respect to the total mass of the color material layer 3 of the first embodiment is preferably 20% by mass or more.
  • the upper limit of content of binder resin According to content of a coloring material and arbitrary additives, it can set suitably. The same applies to the color material layer 3 of the second embodiment described later.
  • the color material layer 3 of the first embodiment may contain additives such as inorganic particles and organic fine particles.
  • inorganic particles include talc, carbon black, aluminum, molybdenum disulfide, and examples of organic fine particles include polyethylene wax and silicone resin fine particles.
  • the color material layer 3 may contain a release agent.
  • the mold release agent include modified or unmodified silicone oil (including those referred to as silicone resins), phosphate esters, and fatty acid esters. The same applies to the color material layer 3 of the second embodiment described later.
  • the formation method of the color material layer 3 of the first embodiment is not particularly limited, and the binder resin, the color material, an additive added as necessary, and a release agent are dissolved or dispersed in an appropriate solvent.
  • a coating material for a color material layer can be prepared, and this coating solution can be formed by applying and drying the base material 1 or an arbitrary layer provided on the base material 1.
  • the thickness of the color material layer 3 is generally in the range of 0.2 ⁇ m to 2.0 ⁇ m. The same applies to the color material layer 3 of the second embodiment described later.
  • the color material layer 3 of the second embodiment contains “one color material” having a maximum reflectance of 80% or more in a wavelength range of 750 nm to 1400 nm, and (1) a wavelength range of 750 nm to 1400 nm. Does not contain “other colorants” with a maximum reflectance of less than 10%, or (2) contains “other colorants” with a maximum reflectance of less than 10% in the wavelength range of 750 nm to 1400 nm Even if it is, it is characterized by the content being less than 15 mass% with respect to the total mass of a coloring material.
  • the color material layer 3 of the second embodiment has a maximum reflectance of 10% in a color material other than the above “1 color material” and “other color material”, specifically, in a wavelength range of 750 nm to 1400 nm. More than 80% of the coloring material may be contained. In this case, the content of “one color material” with respect to the total mass of the color material is preferably 85% by mass or more.
  • the color material layer 3 of the second embodiment contains an anthraquinone dye, a cyanomethylene dye, etc. as “one color material”, and an indoaniline dye as “other color material”. Or contains an indoaniline dye as “other colorant” in a range of less than 15% by mass with respect to the total mass of the colorant contained in the colorant layer 3 of the second embodiment. is doing.
  • the “1 color material” and the “other color material” have been described mainly with respect to the color material contained in the cyan color material layer. However, the yellow color material layer and the magenta color material layer are used. The same applies to.
  • At least one of the plurality of color material layers is the color material layer of the first embodiment and the second embodiment. It is preferable that all the color material layers are the color material layers of the first embodiment and the second embodiment.
  • the color material layer used in the sublimation type thermal transfer method is described as an example.
  • the color material layer 3 is replaced with the color material layer 3 in addition to or in addition to the color material layer 3. It can also be set as the hot-melt ink layer used.
  • the heat-meltable ink layer contains a binder resin and a colorant as a color material.
  • the description of the color material layer may be read as a heat-meltable ink layer, and the description of the color material may be read as a colorant.
  • the maximum reflectance in the wavelength range of 750 nm to 1400 nm of the above “1 color material” and “other color material” contained in the color material layer 3 of the second embodiment was measured by the following method. Is the time value.
  • the reflectance of the color material contained in the color material layer referred to in the present specification means the reflectance measured by the following method.
  • a thermal transfer sheet provided with a color material layer is prepared, and the color material contained in the color material layer is specified using various analysis means. After specifying the color material, adjust the coating material for the color material layer so that the DB ratio (“specified color material” / binder resin) is “1”, and apply this coating solution on the substrate. By drying, a sample of a thermal transfer sheet in which a color material layer containing a color material to be measured is provided on a base material is created.
  • polyvinyl acetal resin (ESREC (registered trademark) KS-5 Sekisui Chemical Co., Ltd.) is used.
  • ESREC registered trademark
  • the wavelength of the solid image is in the range of 750 nm to 1400 nm. Measure the reflectance at.
  • the one having the maximum value is defined as the maximum reflectance of the color material contained in the color material layer.
  • a color material primer layer (not shown) for the purpose of improving the adhesion between the base material 1 and the color material layer 3 may be provided between the base material 1 and the color material layer 3.
  • the color material primer layer is not particularly limited, and a conventionally known color material primer layer can be appropriately selected and used in the field of thermal transfer sheets.
  • the color material primer layer as an example is made of a resin material.
  • the resin material constituting the color material primer layer include polyester resins, polyvinyl pyrrolidone resins, polyvinyl alcohol resins, polyacrylate resins, polyvinyl acetate resins, polyurethane resins, styrene acrylate resins, polyacrylamides. Resin, polyamide resin, polyvinyl acetoacetal, polyvinyl butyral, and the like.
  • the color material primer layer may contain various additives such as organic particles and inorganic particles together with these resin components.
  • the method for forming the color material primer layer is not particularly limited, and the colorant primer layer coating solution in which the resin component exemplified above and the additive added as necessary are dissolved or dispersed in an appropriate solvent. Can be formed by applying and drying the coating liquid on the substrate 1. Although there is no limitation in particular about the thickness of a color material primer layer, Usually, it is the range of 0.02 micrometer or more and 1 micrometer or less.
  • the first transfer layer (5) is a layer that moves directly on the transfer target 100 by the thermal transfer method or on the transfer target 100 on which the special image 50A is formed by the infrared absorbing material-containing layer 2.
  • the special image 50A containing the infrared absorbing material is formed on the transfer target 100, and further, the special image 50A includes the first image 50A.
  • One transfer layer (5) can be formed. That is, the special image 50A can be covered with the first transfer layer (5). Thereby, various problems caused by the special image 50A being exposed on the surface, for example, the disappearance of the special image 50A due to an external impact or the like can be suppressed.
  • the thermal transfer image 50B is formed on the first transfer layer (5) by the color material layer 3 of the first embodiment and the second embodiment, so that a print having the special image 50A and the thermal transfer image 50B. A stereoscopic effect can be imparted to 200.
  • the first transfer layer (5) includes at least the receiving layer 5A, and the single transfer layer 5A alone. It has a layered structure or a laminated structure in which the receiving layer 5A and other layers are laminated in this order from the substrate 1 side (see FIG. 2 (a)). Of the layers constituting the first transfer layer (5), the layer located closest to the substrate 1 is used as the receiving layer 5A. When the first transfer layer (5) is transferred onto the transfer target, This is because the receiving layer 5A is positioned on the outermost surface.
  • Receptive layer Although there is no limitation in particular about the material of 5 A of receiving layers, it is preferable to use the binder resin in which the color material which the color material layer 3 contains dyes easily.
  • binder resins include polyolefin resins such as polypropylene, halogenated resins such as polyvinyl chloride and polyvinylidene chloride, vinyl resins such as polyvinyl acetate and polyacrylic esters, and polyesters such as polyethylene terephthalate and polybutylene terephthalate. Resin, polystyrene resin, polyamide resin, ionomer, cellulose resin and the like.
  • the receiving layer 5A may contain one of these binder resins alone, or may contain two or more.
  • a copolymer obtained by copolymerizing two or more kinds of these binder resin monomers can also be used.
  • examples of such a copolymer include a copolymer of an olefin such as ethylene and propylene and another vinyl monomer.
  • the cellulose-based resin can sufficiently satisfy the transferability of the receiving layer 5A that is a layer located at the transfer interface, and even when the energy applied to the thermal transfer sheet 10 is increased, the cellulose resin can be received.
  • the material of the receiving layer 5A is preferable in that the transferability of the first transfer layer (5) including the layer 5A can be satisfied.
  • a vinyl chloride-vinyl acetate copolymer is preferable as a material for the receiving layer 5A because it can improve the dyeing property of the receiving layer 5A and the releasability between the receiving layer 5A and the color material layer 3. .
  • cellulose resin examples include cellulose acetate resin, cellulose acetate butyrate resin, cellulose acetate propionate resin, nitrocellulose resin, and cellulose acetate.
  • the receiving layer 5A may contain a release agent in order to suppress thermal fusion with the color material layer 3 during printing.
  • a release agent include solid waxes such as polyethylene wax, amide wax, and Teflon (registered trademark) powder, fluorine or phosphate surfactant, silicone oil, reactive silicone oil, and curable silicone oil. And various modified silicone oils, and various silicone resins.
  • the receiving layer 5A is prepared by dispersing or dissolving an additive such as the binder resin and a release agent added as necessary in a suitable solvent. It can be formed by coating and drying on the substrate 1 or an arbitrary layer provided on the substrate 1. There is no limitation in particular about the thickness of 5 A of receiving layers, Usually, it is the range of 0.3 micrometer or more and 10 micrometers or less.
  • Heat seal layer In order to improve the adhesion between the transfer object 100 and the first transfer layer (5), as shown in FIG. 2A, the first transfer layer (5) is moved from the substrate 1 side to the receiving layer 5A, the heat.
  • a laminated structure in which the seal layers 5C are laminated in this order can also be used.
  • a material for the heat seal layer 5C a material having good adhesion to the transfer target 100 is preferable.
  • Examples of such materials include cellulose derivatives such as ethyl cellulose and cellulose acetate butyrate, styrene copolymers such as polystyrene and poly- ⁇ -methylstyrene, acrylic resins such as polymethyl methacrylate, polyethyl methacrylate, and polyethyl acrylate, Examples thereof include vinyl resins such as polyvinyl chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymers, polyvinyl butyral, polyester resins, nylon resins, epoxy resins, polyurethane resins and the like.
  • the thickness of the heat seal layer 5C is preferably in the range of 0.1 ⁇ m to 20 ⁇ m.
  • Primer layer As shown in FIG. 2A, a primer layer 5B may be provided between the receiving layer 5A and the heat seal layer 5C. By providing the primer layer 5B, it is possible to improve the adhesion between the receiving layer 5A and the heat seal layer 5C, and to improve the releasability between the receiving layer 5A and the color material layer, and on the receiving layer 5A. Suppression of bleeding that may occur in the formed thermal transfer image and antistatic properties can be imparted.
  • the thickness of the primer layer 5B is not particularly limited, but a range of 0.01 ⁇ m to 5 ⁇ m is preferable, and a range of 0.02 ⁇ m to 3 ⁇ m is particularly preferable.
  • the first transfer layer (5) When the thermal transfer image 50B is formed on the first transfer layer (5) transferred to the transfer target 100 by the thermal melting type thermal transfer method, the first transfer layer (5) has the receiving layer 5A.
  • the heat seal panel or the like that can be transferred onto the transfer target can be appropriately selected and used.
  • the heat seal panel, the release layer, the heat seal layer, a protective layer described later, and the like can be appropriately selected or used in combination.
  • the second transfer layer including the protective layer 7 ⁇ / b> A together with the infrared absorbing material-containing layer 2, the first transfer layer (5), and the color material layer 3 on one surface of the substrate 1.
  • the layer (7) can also be provided in a surface sequence.
  • the second transfer layer (7) may have a single-layer structure composed only of the protective layer 7A.
  • the release layer 7B and the protective layer 7A are arranged in this order from the substrate 1 side. You may exhibit the laminated structure laminated
  • the infrared absorbing material-containing layer 2, the color material layer 3, and the second transfer layer (7) are provided on one surface of the substrate 1 in the surface order. It can also be set as the structure comprised.
  • binder resin constituting the protective layer 7A examples include polyester resins, polyester urethane resins, polycarbonate resins, acrylic resins, ultraviolet absorbing resins, epoxy resins, acrylic urethane resins, resins obtained by modifying these resins with silicone, and the like.
  • the mixture of each resin of these, actinic-light curable resin, etc. can be mentioned.
  • the actinic ray means a ray that chemically acts on the actinic ray curable resin to accelerate the polymerization, and specifically, visible ray, ultraviolet ray, X-ray, electron beam, ⁇ ray, ⁇ Means line, gamma ray, etc.
  • binder resin which comprises 7 A of protective layers
  • binder resin is contained 20 mass% or more with respect to solid content total amount of 7 A of protective layers, and 30 mass% or more is contained. More preferably.
  • the upper limit of content of binder resin is 100 mass%.
  • the protective layer 7A may contain other materials such as various fillers, a fluorescent brightening agent, and an ultraviolet absorber for improving weather resistance.
  • the method for forming the protective layer 7A is not particularly limited, and a protective layer coating solution is prepared by dissolving or dispersing the binder resin exemplified above and the additive added as necessary in an appropriate solvent.
  • the coating liquid can be formed by applying and drying the base material 1 or an arbitrary layer provided on the base material 1.
  • the thickness of 7 A of protective layers Usually, it is the range of 0.5 micrometer or more and 10 micrometers or less.
  • the second transfer layer (7) may have a laminated structure in which the release layer 7B and the protective layer 7A are laminated in this order from the substrate 1 side. it can.
  • the binder resin constituting the release layer 7B include cellulose derivatives such as ethyl cellulose, nitrocellulose, and cellulose acetate, acrylic resins such as polymethyl methacrylate, polyethyl methacrylate, and polybutyl acrylate, polyvinyl chloride, and chloride.
  • thermosetting resins exemplified by amino copolymers (thermosetting aminoalkyd resins) and the like silicone waxes, silicone resins, silicone-modified resins, fluorine resins, fluorine-modified resins, and polyvinyl alcohol.
  • the release layer 7B may contain a filler such as micro silica or polyethylene wax.
  • the release layer may be formed using a crosslinking agent such as an isocyanate compound, a catalyst such as a tin-based catalyst, and an aluminum-based catalyst in addition to the resin exemplified above.
  • the method for forming the release layer 7B is not particularly limited, and a release layer coating solution is prepared by dissolving or dispersing the binder resin exemplified above and the additive added as necessary in an appropriate solvent.
  • the coating solution can be formed on the substrate 1 by applying and drying.
  • the thickness of the peeling layer 7B Usually, it is the range of 0.1 micrometer or more and 5 micrometers or less.
  • a back layer (not shown) can be provided on the other surface of the substrate 1.
  • a back surface layer is arbitrary structures in the thermal transfer sheet 10 used by the combination of one Embodiment.
  • the material of the back layer for example, cellulose resins such as cellulose acetate butyrate and cellulose acetate propionate, vinyl resins such as polyvinyl butyral and polyvinyl acetal, polymethyl methacrylate, polyethyl acrylate, polyacrylamide
  • An acrylic resin such as acrylonitrile-styrene copolymer, a polyamide resin, a polyamideimide resin, a polyester resin, a polyurethane resin, a natural or synthetic resin such as silicone-modified or fluorine-modified urethane, or a mixture thereof.
  • the back layer may contain a solid or liquid lubricant.
  • the lubricant include various waxes such as polyethylene wax, higher aliphatic alcohols, organopolysiloxanes, anionic surfactants, cationic surfactants, nonionic surfactants, fluorosurfactants, and organic carboxylic acids. And derivatives thereof, metal soaps, fluorine resins, silicone resins, fine particles of inorganic compounds such as talc and silica, and the like.
  • the mass of the lubricant with respect to the total mass of the back layer is in the range of 5 to 50% by mass, preferably in the range of 10 to 40% by mass.
  • a back layer coating solution is prepared by dissolving or dispersing a resin, a lubricant added as necessary, in an appropriate solvent, and this coating solution is used. It can be formed by coating and drying on the substrate 1.
  • the thickness of the back layer is preferably in the range of 0.5 ⁇ m to 10 ⁇ m.
  • the transfer target 100 used in the combination of the embodiment will be described.
  • the material to be transferred 100 used in the combination of one embodiment is composed of natural fiber paper, coated paper, tracing paper, plastic film, glass, metal, ceramics, wood, cloth, etc., and a single layer It may be composed of a plurality of layers.
  • the transfer material 100 is made of a plastic film
  • the plastic film include polyamide resins such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), nylon 6, and nylon 6,6.
  • Polyolefin resins such as polyethylene and polypropylene, vinyl resins such as polyvinyl chloride, acrylic resins such as polyacrylate, polymethacrylate, and polymethyl methacrylate, polyimide, polyphenylene sulfide (PPS), polystyrene, acrylonitrile-styrene Polymers (AS resin), styrene resins such as acrylonitrile-butadiene-styrene copolymer (ABS resin), cellophane, cellulose acetate, nitrocellulose, etc. Cellulose-based film, and the like.
  • the plastic film may be a copolymer resin or a mixture (including an alloy) containing the above resin as a main component.
  • the transfer target 100 itself does not have to include a receiving layer.
  • the thermal transfer sheet 10 according to the embodiment includes the first transfer including the receiving layer 5A.
  • the transfer target 100 has a receiving layer on one surface. Further, both surfaces of the transfer target 100 may include a receiving layer.
  • the thermal transfer sheet 10 according to one embodiment includes the first transfer layer (5) including the receiving layer 5A (see FIGS. 2A and 2B)
  • the transfer target 100 is the thermal transfer image 50B. It is not necessary to provide a receiving layer on the formation surface.
  • the thickness of the transfer target 100 is not particularly limited, but is preferably in the range of 3 ⁇ m to 800 ⁇ m, and more preferably in the range of 100 ⁇ m to 600 ⁇ m.
  • the thermal transfer sheet of one embodiment has been described with a specific example.
  • the infrared absorbing material-containing layer 2 is not provided on one surface of the substrate.
  • the color material layer 3 of the first embodiment or the color material layer of the second embodiment is provided.
  • the thermal transfer sheet 10 according to another embodiment is a thermal transfer sheet used to form a thermal transfer image 50B on a transfer target on which a special image 50A has been previously formed.
  • the color material layer 3 of the first embodiment or the color material layer 3 of the second embodiment is used on the transfer target on which the special image 50A is formed in advance.
  • the thermal transfer sheet 10 of another embodiment is the infrared ray absorbing material-containing layer 2 together with the color material layer 3 of the first embodiment or the color material layer of the second embodiment on one surface of the substrate 1. It is also possible to adopt a configuration in which different layers are provided in the surface order. Examples of the layer different from the infrared absorbing material-containing layer 2 include the first transfer layer (5) and the second transfer layer (7).
  • ⁇ Configuration example of thermal transfer sheet> 3 to 5 are schematic cross-sectional views showing an example of the configuration of the thermal transfer sheet used in the combination of the embodiments.
  • the thermal transfer sheet 10 in the form shown in FIG. 3A has an infrared absorbing material-containing layer 2, a first transfer layer (5), a yellow color material layer 3Y, and a magenta color material layer 3M on one surface of the substrate 1.
  • the cyan color material layer 3C, the second transfer layer (7), the yellow color material layer 3Y, the magenta color material layer 3M, the cyan color material layer 3C, and the second transfer layer (7) are provided in the order of planes.
  • each layer is “one panel”
  • “six panels” from the upstream side of printing is the one surface side of the transfer object 100.
  • the remaining “4 panels” form an image on the other surface side of the transferred body 100 (second screen).
  • the panel is used to form an image.
  • a first transfer layer (5) is provided between the second transfer layer (7) and the yellow color material layer 3Y, and the first transfer layer (5 )
  • An image is formed on the other surface side of the transfer object 100 by “5 panel” composed of the yellow color material layer 3Y, the magenta color material layer 3M, the cyan color material layer 3C, and the second transfer layer (7).
  • the thermal transfer sheet 10 of the form shown in FIG. 4 has an infrared absorbing material-containing layer 2, a first transfer layer (5), a yellow color material layer 3Y, a magenta color material layer 3M,
  • the “1 unit” is repeatedly provided. That is, in the embodiment shown in FIG. 3, the panel used to form the “image of the first screen” on one surface side of the transfer body is composed of “6 panels”, and the other surface of the transfer body 100 is formed.
  • the panel used to form the “second screen image” on the side is composed of “four panels”, whereas in the form shown in FIG. 4, the “first screen image” and the “second screen”
  • the panels for forming the “eye image” are both composed of “6 panels”, and the “6 panels” is set to “1 unit”, thereby reducing the number of panels constituting the “1 unit”.
  • the thermal transfer sheet 10 in the form shown in FIG. 5 has an infrared absorbing material-containing layer 2, a first transfer layer (5), a yellow color material layer 3Y, a magenta color material layer 3M,
  • an aggregate composed of “six panels” of the cyan color material layer 3C and the second transfer layer (7) is defined as “1 unit”, it is used to form an image for the first screen and an image for the second screen.
  • the panel is integrated into a “panel” with a length of 2 screens.
  • each of the yellow color material layer 3Y, the magenta color material layer 3M, and the cyan color material layer 3C is a “panel” having a length of two screens.
  • one color material layer is used for forming an image on the first screen and an image on the second screen.
  • the “panel” length of a layer used for an image formed on one surface side and the other surface side of the transfer target is set to a length corresponding to two screens, By making the “panel” length of the layer used for the image formed on the surface side the length of one screen, waste due to the “panel” that is not used can be suppressed.
  • an image of the first screen is formed on one surface of the transfer target 100 using “one unit”, and then the transfer target 100 is moved up and down.
  • the thermal transfer sheet 10 can be rewound and the previously used “1 unit” can be used again to form an image on the second screen on the other surface of the transfer object 100.
  • the yellow color material layer 3Y, the magenta color material layer 3M, and the cyan color material layer 3C are used as the “panel” to be used for forming the first screen image and the second screen image.
  • the length is set to the length of two screens, but the “panel” length of other layers, for example, the first transfer layer (5) and the second transfer layer (7) may be set to the length of two screens. it can. Further, “1 unit” can be repeatedly provided.
  • the method for producing a printed material according to the first embodiment is a method for producing a printed material using the thermal transfer sheet 10 and the material to be transferred 100, and a transfer object preparation step for preparing the material to be transferred 100, and the substrate 1.
  • a special image 50A containing an infrared absorbing material by transferring the infrared absorbing material-containing layer 2 of the thermal transfer sheet onto one surface of the transfer target 100 is obtained.
  • a thermal transfer image forming step of forming a thermal transfer sheet 1 Maximum reflectance in the range of less than the wavelength 750nm or more 1400nm color material layer 3 moiety is characterized in that 50% or more. That is, the thermal transfer sheet 10 of one embodiment provided with the color material layer 3 of the first embodiment is used as the thermal transfer sheet 10.
  • the special image 50A including the thermal transfer image 50B containing the infrared absorbing material of the thermal transfer sheet 10 and the thermal transfer image 50B containing the coloring material is used. Can be obtained.
  • each step will be specifically described.
  • thermal transfer sheet 10 As the thermal transfer sheet 10 prepared in this step, the thermal transfer sheet 10 described in the combination of the above embodiment can be used as it is, and detailed description thereof is omitted here.
  • a special image 50A is formed by melting and transferring the infrared absorbing material-containing layer 2 of the thermal transfer sheet 10 on one surface of the transfer target 100.
  • the special image 50A is not particularly limited, and examples thereof include a two-dimensional code including image information of a thermal transfer image 50B described later.
  • thermal transfer printer used for the formation of the special image 50A, the transfer of the first transfer layer (5), and the formation of the thermal transfer image 50B
  • a conventionally known printer having heating means such as a thermal head is appropriately selected and used. Can do.
  • a method using a heating means such as a thermal head for example, a hot stamp method, a heat roll method, or the like can be used.
  • the special image 50 ⁇ / b> A can be formed using a heat melting type thermal transfer method.
  • the thermal melting type thermal transfer system is a system in which an image is formed by transferring a color material layer melted and softened by applying energy according to image information from a heating unit onto a transfer target.
  • thermal transfer image forming process In this step, the thermal transfer sheet 10 and the transfer target 100 are overlapped so that the color material layer 3 of the thermal transfer sheet 10 and one surface of the transfer target 100 face each other.
  • the printed matter 200 in which the special image 50A and the thermal transfer image 50B are formed on one surface of the transfer target 100 is obtained.
  • the thermal transfer image 50B is formed so as to overlap at least a part of the special image 50A.
  • the special image 50A and the thermal transfer image 50B are Do not have to overlap.
  • the thermal transfer image 50B may be formed so as to cover the entire surface of the special image 50A.
  • a special image 50A may be formed on the thermal transfer image 50B so as to overlap at least a part of the thermal transfer image 50B (not shown).
  • the transfer target 100 is a sublimation dye. It is preferable to have a receptive layer for receptive.
  • the second transfer layer (7 ) May be included in the second transfer layer transfer step.
  • the second transfer layer transfer step is an optional step in the method for producing a printed material according to one embodiment.
  • the transfer of the second transfer layer (7) may be performed using the thermal transfer sheet 10 having the second transfer layer (7) as shown in FIGS. 2 (b) and 3 to 5, and is prepared as described above.
  • a separate thermal transfer sheet such as a protective layer transfer sheet
  • different from the thermal transfer sheet 10 may be used.
  • the thermal transfer sheet 10 shown in FIGS. 3 to 5 is used before or after the above-described various steps.
  • a process of forming a separate thermal transfer image 50C on the other surface of the transfer target 100 may be included.
  • the transfer target body 50C is formed before the formation of the thermal transfer image 50C.
  • Transferring the receiving layer onto the other side of 100 may be included. The transfer of the receiving layer may be performed by transferring the first transfer layer (5) as will be described later, or may be performed using another thermal transfer sheet.
  • a printed matter having a thermal transfer image formed on both sides can be obtained.
  • the special image 50A may be formed on the other surface of the transfer body 100.
  • the method for producing a printed material according to the second embodiment is a method for producing a printed material using the thermal transfer sheet 10 and the material to be transferred 100.
  • thermo transfer sheet 10 a transfer layer transfer step for transferring the first transfer layer (5) of the thermal transfer sheet 10, and, as shown in FIG. 9 (c), on the first transfer layer (5).
  • the color material layer 3 of the thermal transfer sheet 10 is thermally transferred to obtain a thermal transfer image 50B.
  • the thermal transfer image forming step of forming, in the color material layer 3 portion of the thermal transfer sheet 10, the maximum reflectance in the range of more than the wavelength 750 nm 1400 nm is characterized in that 50% or more. That is, the thermal transfer sheet 10 of one embodiment provided with the color material layer 3 of the first embodiment is used as the thermal transfer sheet 10.
  • the special image 50A and the thermal transfer image 50B are placed on the transfer target 100 so that the special image 50A and the thermal transfer image 50B are in direct contact with each other (see FIG. 8).
  • the special image 50A and the thermal transfer image 50B are formed side by side on the same surface of the transfer target 100 (see FIG. 7), whereas the method for manufacturing a printed material according to the second embodiment is a special image.
  • the method for producing a printed material according to the first embodiment in that the first transfer layer (5) is transferred onto 50A, and the thermal transfer image 50B is formed on the transferred first transfer layer (5).
  • the method for producing a printed product according to the second embodiment is different, and is otherwise the same.
  • the thermal transfer sheet 10 and the transfer target 100 on which the special image 50A is formed are overlapped so that the first transfer layer (5) of the thermal transfer sheet 10 and one surface of the transfer target 100 face each other.
  • the first transfer layer (5) of the thermal transfer sheet 10 is melt-transferred onto the transfer target 100 on which the special image 50A is formed.
  • the first transfer layer (5) only needs to be transferred to an area where a thermal transfer image 50B described later is formed, and the transfer area may be the entire surface of one surface of the transfer target 100. It may be a part of one surface of the body 100 (in the illustrated form, the entire surface of one surface of the transfer target).
  • the first transfer layer (5) may be transferred to a position that does not overlap with the special image 50A. From the viewpoint of protecting the special image 50A, it is preferable to transfer the first transfer layer (5) so as to cover the special image 50A.
  • the method for manufacturing a printed matter according to the second embodiment may include any step described in the method for manufacturing a printed matter according to the first embodiment (see FIGS. 9D and 9E). .
  • the manufacturing method of the printed matter of the said 1st Embodiment and 2nd Embodiment in the range whose wavelengths are 750 nm or more and 1400 nm or less of the color material layer of the thermal transfer sheet 10 as a thermal transfer sheet used for formation of the said printed matter
  • the description has focused on the case where the maximum reflectance is 50% or more. That is, the description is focused on the case where the thermal transfer sheet 10 is the thermal transfer sheet 10 including the color material layer 3 of the first embodiment. Although it performed, it can replace with this and the thermal transfer sheet provided with the color material layer 3 of the said 2nd Embodiment can also be used.
  • thermal transfer printer a thermal transfer printer according to an embodiment of the present invention (hereinafter referred to as a thermal transfer printer according to an embodiment) will be described.
  • a thermal transfer printer is a thermal transfer printer in which a thermal transfer sheet and a transfer target are loaded, the loaded thermal transfer sheet, a transfer unit that transfers the transfer target along a transfer path, and a thermal transfer sheet.
  • a platen roller disposed in a conveying path with the transfer target; and a thermal head for applying energy to the thermal transfer sheet.
  • the thermal transfer printer is characterized in that the thermal transfer sheet loaded in the thermal transfer printer is the thermal transfer sheet described above.
  • a thermal transfer image visible image
  • an infrared light that cannot be seen or visible under visible light. It is possible to form a print having an image (a special image) containing an infrared absorbing material recognizable below and capable of accurately detecting the special image.
  • the thermal transfer printer of one embodiment is characterized by the thermal transfer sheet loaded in the thermal transfer printer. Therefore, the configuration of the other thermal transfer printer is not limited in any way, and a conventionally known thermal transfer printer is not limited. A printer can be selected and used as appropriate.
  • transfer target that is loaded in the thermal transfer printer of one embodiment, and the transfer target described above can be appropriately selected and used.
  • the combination of one embodiment is a combination of a thermal transfer sheet and a thermal transfer printer, and the thermal transfer sheet is the thermal transfer sheet of the present invention described above.
  • a thermal transfer image visible image
  • a thermal transfer image that can be visually recognized under visible light, and cannot be visually recognized under visible light, or is difficult to visually recognize under infrared light. It is possible to form a printed matter that has a special image containing an infrared absorbing material that can be recognized by the method and that can accurately detect the special image.
  • the combination of one embodiment is characterized by the thermal transfer sheet constituting the combination. Therefore, the thermal transfer printer is not limited in any way, and a conventionally known thermal transfer printer can be appropriately selected and used. .
  • Game console ⁇ Game console >> Next, a game machine according to one embodiment of the present invention (hereinafter referred to as a game machine according to one embodiment) will be described.
  • a game machine is a game machine having a built-in thermal transfer printer, and a game execution unit that executes a game function, and a printed matter having a thermal transfer image that reflects a result of execution of the game function by the game execution unit, It includes a print product forming unit formed by a thermal transfer printer, and an issuing unit for issuing a print product formed by the print product forming unit.
  • the game machine is characterized in that the printed material forming means is the thermal transfer printer incorporated in the game machine, which is the thermal transfer printer of the present invention described above.
  • thermo transfer image visible image
  • infrared-absorbing material that cannot be visually recognized under visible light or that is difficult to visually recognize and can be recognized under infrared light
  • a printed matter having an image and capable of accurately detecting the special image can be formed.
  • Examples of the visible image included in the printed matter formed by the game machine according to the embodiment include a character image reflecting the execution result of the game function by the game execution means.
  • Examples of the special image include an information image indicating the status of the character image that is a visible image, an information image indicating the progress of the game, and the like.
  • Examples of the information image include a two-dimensional code.
  • game machine having a game executing means for executing a game function and an issuing means for issuing a printed matter formed by the printed matter forming means, and conventionally known games can be appropriately selected and used.
  • the game machine of one embodiment may further include an identification unit that identifies information recorded in the special image.
  • an identification means an infrared scanner etc. can be mentioned, for example.
  • a printed matter for example, a card issued by the game machine of the one embodiment is used for the next and subsequent games.
  • Special information indicating the information recorded in the special image is identified by the identification means, the information identified by the identification means, the visible image reflecting the execution result of the game function in the current game, the information of the visible image, etc.
  • a printed matter having an image can be newly issued.
  • the game machine of one embodiment is not easily visible or visible under a thermal transfer image (visible image) visible under visible light and visible light with a thermal transfer printer built into the game machine,
  • a printed matter having a special image containing an infrared absorbing material recognizable under infrared light and capable of accurately detecting the special image can be easily formed.
  • the recorded information can be accurately identified.
  • FIG. 10 is a schematic diagram illustrating an example of a configuration of the game machine 500 according to an embodiment.
  • a game machine 500 in the form shown in the figure has a thermal transfer printer 400 and identification means 410 for identifying special image information included in a printed material formed by the game machine 500 inside the casing.
  • the illustrated game machine 500 is a general game machine such as a control panel (not shown), a monitor 515, a speaker, a card insertion slot 510, a card ejection slot 511, a coin insertion slot (not shown), a power source, and the like. It has a configuration.
  • the thermal transfer printer 400, the control panel, the monitor 515, and the speaker are connected to the control unit.
  • the control unit includes a game control unit (not shown) that controls the execution of the game according to the game program, a display control unit (not shown) that displays an image on the monitor 515 based on data provided by the game control unit, and game control.
  • a voice control unit (not shown) that outputs sound from a speaker based on data provided by the unit is provided.
  • the game control unit includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Randam Access Memory), and the like.
  • the CPU calls a game program stored in a storage unit, a ROM, a recording medium or the like to a work memory area on the RAM and executes it, and drives each device connected via the bus to execute a game process.
  • the storage unit is, for example, an HDD (Hard Disk Drive), and stores a program executed by the game control unit, data necessary for program execution, an OS (Operating System), and the like.
  • a control program corresponding to the OS, a game program, and an application program for causing a computer to execute predetermined processing are stored.
  • Each of these program codes is read by the game control unit as necessary, transferred to the RAM, and executed as various means.
  • the identification means 410 is provided inside the card insertion slot 510 and reads information on a special image printed on a printed matter (card).
  • An example of the identification unit 410 is an infrared scanner.
  • the game control means executes the game based on the special image information, and generates image data based on the game execution result.
  • the image data includes a visible image reflecting the execution result of the game function, and special image data indicating the information of the visible image.
  • the game control means transmits the generated image data to the thermal transfer printer 400, and the thermal head of the thermal transfer printer 400 selectively selects the infrared ray absorbing material-containing layer and the color material layer of the thermal transfer sheet based on the transmitted image data. Heating is performed to form a special image and a visible image based on the image data on the transfer target.
  • the printed matter in which the visible image and the special image are formed on the formed transfer target is discharged from the card discharge port 511.
  • the game control unit may transmit the game information to a server or the like via the network after the execution of the game is finished. Further, image data based on the game result may be generated on the server side.
  • the game machine of one embodiment has a built-in thermal transfer printer, and displays a visible image and a special image on the transfer target according to the execution of the game and the execution result of the game. As long as it can be formed, there is no limitation other than this.
  • Example 1 Using a polyethylene terephthalate (PET) film having a thickness of 4.5 ⁇ m as the base material, a coating solution for the back layer having the following composition is applied on one surface of the base material so that the thickness when dried is 1 ⁇ m. -Dried to form a back layer. On the other surface of the substrate, an infrared absorbing material-containing layer was formed by applying and drying an infrared absorbing material-containing layer coating solution having the following composition so that the thickness when dried was 0.5 ⁇ m. Further, on the other surface of the base material, the receiving layer is coated with an infrared ray absorbing material-containing layer in the surface order and dried so that the thickness when dried of the receiving layer is 1 ⁇ m. Formed.
  • PET polyethylene terephthalate
  • the primer layer coating solution having the following composition is applied and dried in the order of the infrared absorbing material-containing layer and the receiving layer so that the thickness when dried is 0.2 ⁇ m. Then, a primer layer is formed, and on this primer layer, the color material layer coating liquid 1 having the following composition is applied and dried by a gravure printing machine so that the thickness when dried is 0.7 ⁇ m. A layer was formed. Next, on the other surface of the substrate, the thickness of the release layer coating liquid having the following composition is 1.0 ⁇ m when dried with the infrared absorbing material-containing layer, the receiving layer, and the color material layer in the surface order.
  • a protective layer coating solution having the following composition is applied and dried to a thickness of 1 ⁇ m to form a protective layer.
  • a back layer is provided on one surface of the substrate, and an infrared absorbing material-containing layer, a receiving layer, a color material layer, a laminate of a release layer and a protective layer are arranged in this order on the other surface of the substrate.
  • Acrylic resin 24.0 parts (Dianal (registered trademark) BR-87 Mitsubishi Chemical Corporation) ⁇ Dimonium salt 1.0 part (CIR-RL Nippon Carlit Co., Ltd.) ⁇ Toluene 37.5 parts ⁇ Methyl ethyl ketone 37.5 parts
  • Coloring material layer coating solution 1 (Coloring material layer coating solution 1) ⁇ Dye of the following formula (1) (as “coloring material 1”) 4 parts ⁇ Polyvinyl acetal resin 3 parts (ESREC (registered trademark) KS-5 Sekisui Chemical Co., Ltd.) ⁇ Toluene 50 parts ⁇ Methyl ethyl ketone 50 parts
  • Acrylic resin 20 parts (Dianal (registered trademark) BR-87 Mitsubishi Chemical Corporation) ⁇ Toluene 40 parts ⁇ Methyl ethyl ketone 40 parts
  • Polyester resin 24 parts (Byron (registered trademark) 700 Toyobo Co., Ltd.) ⁇ Ultraviolet absorber 6 parts ⁇ Toluene 35 parts ⁇ Methyl ethyl ketone 35 parts
  • Example 2 The thermal transfer sheet of Example 2 was used in the same manner as in Example 1 except that the color material layer was formed using a color material layer coating liquid 2 having the following composition instead of the color material layer coating liquid 1. Obtained.
  • Coloring material layer coating solution 2 (Coloring material layer coating solution 2) ⁇ Dye of the following formula (2) (as “coloring material 1”) 4 parts ⁇ Polyvinyl acetal resin 3 parts (ESREC (registered trademark) KS-5 Sekisui Chemical Co., Ltd.) ⁇ Toluene 50 parts ⁇ Methyl ethyl ketone 50 parts
  • Example 3 The thermal transfer sheet of Example 3 was the same as Example 1 except that the color material layer was formed using the color material layer coating liquid 3 having the following composition instead of the color material layer coating liquid 1. Obtained.
  • Comparative Example 1 The thermal transfer sheet of Comparative Example 1 was used in the same manner as in Example 1 except that the color material layer was formed using the color material layer coating liquid A having the following composition instead of the color material layer coating liquid 1. Obtained.
  • Dye of above formula (3) (as “other colorant”) 4 parts ⁇ Polyvinyl acetal resin 3 parts (ESREC (registered trademark) KS-5 Sekisui Chemical Co., Ltd.) ⁇ Toluene 50 parts ⁇ Methyl ethyl ketone 50 parts
  • Comparative Example 2 The thermal transfer sheet of Comparative Example 1 was the same as Example 1 except that the color material layer was formed using the color material layer coating liquid B having the following composition instead of the color material layer coating liquid 1. Obtained.
  • Dye of the following formula (4) (as “other colorant”) 4 parts ⁇ Polyvinyl acetal resin 3 parts (ESREC (registered trademark) KS-5 Sekisui Chemical Co., Ltd.) ⁇ Toluene 50 parts ⁇ Methyl ethyl ketone 50 parts
  • the primer layer coating solution 1 having the following composition was applied on a 35 ⁇ m thick porous polyolefin film (SP-U Mitsui Chemicals, Inc.) to a thickness of 1.5 ⁇ m when dried by a bar coater. ⁇ Dry to form a primer layer, and then apply the coating solution for the receiving layer having the following composition on the primer layer with a bar coater so that the dry thickness is 4.0 ⁇ m.
  • a layer was formed to obtain a laminate in which a primer layer and a receiving layer were laminated in this order on a porous polyolefin film.
  • the laminate obtained above is applied onto one surface of a core paper (OKL Card Oji Paper Co., Ltd.) having a thickness of 400 ⁇ m (basis weight 310 g / m 2 ), and the adhesive layer coating liquid having the following composition: Bonding was performed using (thickness 4 ⁇ m).
  • a laminate in which a primer layer and a receiving layer were laminated in this order was bonded onto a porous polyolefin film.
  • Vinyl chloride-vinyl acetate copolymer 10 parts (Solvine (registered trademark) C Nissin Chemical Co., Ltd.) ⁇ Silicon oil 1 part (X-22-3000T Shin-Etsu Chemical Co., Ltd.) ⁇ Toluene 20 parts ⁇ Ethyl acetate 20 parts
  • Thermal head KEE-57-12GAN2-STA (Kyocera Corporation) Heating element average resistance: 3303 ( ⁇ ) Main scanning direction printing density: 300 (dpi) Sub-scanning direction printing density: 300 (dpi) Printing voltage: 18 (V) Line cycle: 1.5 (msec.) Printing start temperature: 35 (°C) Pulse duty ratio: 85 (%)
  • the receiving layer was transferred on the transfer target and on the special image under the condition of 180/255 gradation (energy gradation).
  • thermal transfer image (solid image) was printed on the portion of the receiving layer on which the special image was transferred, on the condition of 255/255 gradation (energy gradation). Prints of examples and comparative examples were obtained.
  • the reflectance in the wavelength range of 750 nm to 1400 nm of the color material layer of the thermal transfer sheet of each example and comparative example was measured using an ultraviolet visible near infrared spectrophotometer (UV-3100PC Corporation, Shimadzu Corporation). Of the measured reflectances, the one having the maximum value was defined as the maximum reflectance.
  • the measurement results are shown in Table 1. The measurement of the maximum reflectance of the color material layer was performed by the above-described “method for measuring the reflectance of the color material layer”.
  • the maximum reflectance of the color material layer of the thermal transfer sheet in the wavelength range from 750 nm to 1400 nm increases, the accuracy of detection of a special image by an infrared scanner or the like becomes better, and the maximum reflectance in the wavelength range from 750 nm to 1400 nm. If it is less than 50%, the special image cannot be accurately detected by an infrared scanner or the like.
  • evaluation of special image detection Using an infrared scanner (test product), the evaluation of the special images included in the prints of the examples and comparative examples was performed, and the detection of the special images was evaluated based on the following evaluation criteria. The evaluation results are also shown in Table 1.
  • Evaluation criteria A: The detection accuracy is high and the special image can be recognized accurately.
  • NG The detection accuracy is low and the special image cannot be recognized.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Electronic Switches (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
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