WO2017146151A1 - 熱転写シートと中間転写媒体の組合せ、及び印画物の形成方法 - Google Patents
熱転写シートと中間転写媒体の組合せ、及び印画物の形成方法 Download PDFInfo
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- WO2017146151A1 WO2017146151A1 PCT/JP2017/006843 JP2017006843W WO2017146151A1 WO 2017146151 A1 WO2017146151 A1 WO 2017146151A1 JP 2017006843 W JP2017006843 W JP 2017006843W WO 2017146151 A1 WO2017146151 A1 WO 2017146151A1
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- 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
- B41M5/38207—Contact thermal transfer or sublimation processes characterised by aspects not provided for in groups B41M5/385 - B41M5/395
- B41M5/38214—Structural details, e.g. multilayer systems
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- 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
- B41M5/42—Intermediate, backcoat, or covering layers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/40—Layered products comprising a layer of synthetic resin comprising polyurethanes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
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- 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
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/0057—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material where an intermediate transfer member receives the ink before transferring it on the printing material
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- 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
- B41J2/32—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 using thermal heads
- B41J2/325—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 using thermal heads by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet
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- 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
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
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- 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
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- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
- B41M5/506—Intermediate layers
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- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
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- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
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- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5263—Macromolecular coatings characterised by the use of polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- B41M5/5281—Polyurethanes or polyureas
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/30—Thermal donors, e.g. thermal ribbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/32—Thermal receivers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/38—Intermediate layers; Layers between substrate and imaging layer
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- 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
- B41M5/392—Additives, other than colour forming substances, dyes or pigments, e.g. sensitisers, transfer promoting agents
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- 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
- B41M5/41—Base layers supports or substrates
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- 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
- B41M5/42—Intermediate, backcoat, or covering layers
- B41M5/426—Intermediate, backcoat, or covering layers characterised by inorganic compounds, e.g. metals, metal salts, metal complexes
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- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5236—Macromolecular coatings characterised by the use of natural gums, of proteins, e.g. gelatins, or of macromolecular carbohydrates, e.g. cellulose
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- 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
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5263—Macromolecular coatings characterised by the use of polymers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- B41M5/5272—Polyesters; Polycarbonates
Definitions
- the present invention relates to a combination of a thermal transfer sheet and an intermediate transfer medium, and a method for forming a printed product.
- a thermal transfer method has been widely used as a simple printing method.
- a thermal transfer sheet provided with a color material layer on a base material and a thermal transfer image receiving sheet provided with a receiving layer on another base material are overlapped, and the back surface of the thermal transfer sheet is heated by heating means such as a thermal head.
- the color material contained in the color material layer is selectively transferred by heating to form an image on the receiving layer of the thermal transfer image receiving sheet.
- the thermal transfer method is divided into a melt transfer method and a sublimation transfer method.
- the melt transfer method uses a thermal transfer sheet in which a hot melt ink layer in which a color material such as a pigment is dispersed in a binder such as a hot melt wax or resin is carried on a base sheet, and image information is obtained by heating means such as a thermal head.
- image forming method energy corresponding to the above is applied and a color material is transferred together with a binder onto a thermal transfer image receiving sheet such as paper or a plastic sheet.
- An image obtained by the melt transfer method has a high density and excellent sharpness, and is suitable for recording binary images such as characters.
- the sublimation transfer method uses a thermal transfer sheet in which a color material layer in which a color material that transfers heat by sublimation is dissolved or dispersed in a resin binder is supported on a substrate, and is converted into image information by heating means such as a thermal head.
- This is an image forming method in which only a color material is transferred and transferred (diffusion transferred) onto a base material such as paper or plastic or a thermal transfer image receiving sheet provided with a receiving layer as required by applying appropriate energy.
- the amount of color material transferred can be controlled in accordance with the amount of energy applied, it is possible to form a gradation image with controlled image density.
- the color material to be used is a dye
- the formed image is transparent, and the reproducibility of intermediate colors when dyes of different colors are superimposed is excellent. Therefore, when using thermal transfer sheets of different colors such as yellow, magenta, cyan, black, etc., and transferring each color dye on the thermal transfer image receiving sheet, high-quality photographic tone full-color images with excellent reproducibility of intermediate colors can be obtained. Formation is possible.
- this thermal transfer method is a full-color hard copy of analog images such as digital graphics and video, such as still images by computer graphics, satellite communications, and CD-ROM.
- analog images such as digital graphics and video
- digital graphics such as still images by computer graphics, satellite communications, and CD-ROM.
- thermal transfer image receiving sheet As a system, its market is expanding.
- the specific application of the thermal transfer image receiving sheet by this thermal transfer method is diverse. Typical examples include printing proofs, image output, CAD / CAM design and design output, various medical analytical instruments such as CT scans and endoscopic cameras, measuring instrument output applications and instant
- thermal transfer image receiving sheet With the diversification of uses of the above-mentioned thermal transfer image receiving sheet, there is an increasing demand for forming a thermal transfer image on an arbitrary object.
- a dedicated thermal transfer image-receiving sheet provided with a receiving layer on a substrate is used as an object for forming a thermal transfer image.
- the substrate and the like are restricted.
- an intermediate transfer medium in which a receiving layer is provided on a substrate in a detachable manner has been proposed.
- this intermediate transfer medium by using a thermal transfer sheet having a color material layer, the color material is transferred to the receiving layer to form a thermal transfer image, and then the intermediate transfer medium is heated so that the receiving layer can be arbitrarily coated.
- the image can be transferred onto a transfer body, and a thermal transfer image can be formed without being restricted by the transfer object.
- the receptor layer is thermally damaged.
- the transferability when transferring the receiving layer on which the thermal transfer image is formed on the transferred body is lowered. This causes a problem that the adhesion with the receiving layer on which the thermal transfer image is formed is lowered.
- a thermal transfer image can be formed on a receptor layer of an intermediate transfer medium without applying high energy, and a receptor layer on which a thermal transfer image is formed is provided.
- a thermal transfer sheet capable of improving the transferability when transferred onto a transfer target and the durability of a printed material obtained by transferring a receiving layer having a thermal transfer image formed on the transfer target; It is a main object to provide a combination of intermediate transfer media and a method for forming a printed product.
- the present invention for solving the above problems is a combination of a thermal transfer sheet and an intermediate transfer medium, wherein the thermal transfer sheet is laminated on one surface of a base material in the order of a primer layer and a color material layer,
- the primer layer is a thermal transfer sheet containing particles derived from colloidal inorganic particles, polyvinyl alcohol resin, polyvinylpyrrolidone resin, one selected from the group of polyurethane resins, or two or more
- the intermediate transfer medium is an intermediate transfer medium in which a protective layer and a receiving layer are laminated in this order on one surface of another substrate.
- the receiving layer of the intermediate transfer medium may contain a resin having a number average molecular weight (Mn) of 6000 or more and 35000 or less, and a resin having a glass transition temperature (Tg) of 60 ° C. or more and 100 ° C. or less. It may be. Further, the receiving layer of the intermediate transfer medium may contain a release agent in a range of 15% by mass or less with respect to the total mass of the receiving layer.
- Mn number average molecular weight
- Tg glass transition temperature
- the present invention for solving the above-mentioned problems is a method for forming a printed material, in which a thermal transfer sheet in which a primer layer and a color material layer are laminated in this order on one surface of a substrate, and the other A step of preparing an intermediate transfer medium in which a protective layer and a receiving layer are laminated in this order on one surface of the substrate, and a transfer target; and on the receiving layer of the intermediate transfer medium, A thermal transfer image forming step of transferring a color material contained in the color material layer of the thermal transfer sheet and forming a thermal transfer image on the receptor layer, and a receptor layer on which the thermal transfer image is formed, together with the protective layer, A printing material forming step for transferring onto a transfer target, wherein the primer layer of the thermal transfer sheet used for forming the thermal transfer image is a particle derived from colloidal inorganic particles, a polyvinyl alcohol resin, a polyvinyl pyrrolidone resin, a polyurethane One selected from the group consisting of
- the receiving layer of the intermediate transfer medium may contain a resin having a number average molecular weight (Mn) of 6000 or more and 35000 or less, and a resin having a glass transition temperature (Tg) of 60 ° C. or more and 100 ° C. or less. It may be. Further, the receiving layer of the intermediate transfer medium may contain a release agent in a range of 15% by mass or less with respect to the total mass of the receiving layer.
- Mn number average molecular weight
- Tg glass transition temperature
- a thermal transfer image can be formed on the receiving layer of the intermediate transfer medium without applying high energy, and the thermal transfer image is Transferability when the formed receiving layer is transferred onto the transfer medium, and durability of the printed matter obtained by transferring the receiving layer on which the thermal transfer image is formed on the transfer medium are improved. be able to.
- a thermal transfer sheet 10 (hereinafter sometimes simply referred to as a thermal transfer sheet) used in the combination of one embodiment has a primer layer 2, a color on one surface of a substrate 1.
- the material layer 3 is configured to be laminated in this order.
- a back layer 5 is provided on the other surface of the substrate 1.
- the base material 1, the primer layer 2, and the color material layer 3 are indispensable structures in the thermal transfer sheet 10 used for the combination of one embodiment, and the back surface layer 5 is an arbitrary structure.
- one color material layer 3 is provided on one surface of the base material 1 via the primer layer 2, but as shown in FIG.
- a plurality of color material layers 3 (3M, 3C, 3Y in the illustrated form) can also be provided in the surface order via the primer layer 2.
- 1 and 2 are schematic cross-sectional views of a thermal transfer sheet 10 used in the combination of one embodiment. Hereinafter, each structure of the thermal transfer sheet 10 used for the combination of one embodiment is demonstrated.
- the base material 1 is an indispensable structure in the thermal transfer sheet 10 used for the combination of one embodiment, and the primer layer 2 provided on one surface of the base material 1 or the other surface of the base material 1. An optional back layer 5 is held.
- the material of the substrate 1 is not particularly limited.
- polyester such as polyethylene terephthalate, polyarylate, polycarbonate, polyurethane, polyimide, polyetherimide, cellulose derivative, polyethylene, ethylene-vinyl acetate copolymer, polypropylene, polystyrene, Acrylic, polyvinyl chloride, polyvinylidene chloride, polyvinyl alcohol, polyvinyl butyral, nylon, polyether ether ketone, polysulfone, polyether sulfone, tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer, polyvinyl fluoride, tetrafluoroethylene Ethylene copolymer, tetrafluoroethylene-hexafluoropropylene copolymer, polychlorotrifluoroethylene, polyvinylidene
- plastic films such as Nfuruoraido, or sheets, and the like.
- the thickness of the base material Usually, it is the range of 2 micrometers or more and 100 micrometers or less, Preferably, it is the range of 1 micrometer or more and 10 micrometers or less.
- the base material 1 it is also possible to use a base material that has been subjected to adhesion treatment on the surface side where the primer layer 2 is located.
- adhesion treatment include known resin surface modification techniques such as corona discharge treatment, flame treatment, ozone treatment, ultraviolet treatment, radiation treatment, surface roughening treatment, chemical treatment, plasma treatment, low temperature plasma treatment, and grafting treatment. Can be applied as is. Two or more of these treatments can be used in combination.
- Primer layer As shown in FIGS. 1 and 2, a primer layer 2 is provided on one surface of the base material 1 (in the illustrated form, the upper surface side of the base material 1).
- the primer layer 2 is an essential component in the thermal transfer sheet 10 used in the combination of one embodiment.
- the thermal transfer sheet 10 used in the combination of the embodiments is used to form a thermal transfer image on a receiving layer 53 of an intermediate transfer medium 60 described later, and the receiving layer of the intermediate transfer medium 60 is used by using the thermal transfer sheet 10.
- the intermediate transfer medium 60 is combined with the transfer target 100, and the receiving layer 53 on which the thermal transfer image is formed is transferred onto the transfer target 100 together with the protective layer 52.
- a print 200 is obtained. Therefore, in the intermediate transfer medium 60 used in the combination of one embodiment, the transferability when the receiving layer 53 on which the thermal transfer image is formed together with the protective layer 52 is transferred onto the transfer target 100 is good. In other words, when the receiving layer 53 on which the thermal transfer image is formed on the transfer target 100 is transferred together with the protective layer 52, the adhesion between the transfer target 100 and the receiving layer 53 on which the thermal transfer image is formed is good. Is required.
- the adhesion between the transfer target 100 and the receiving layer 53 on which the thermal transfer image is formed is determined when the thermal transfer image is formed, in other words, when the color material contained in the color material layer 3 of the thermal transfer sheet is transferred.
- the damage received by the receiving layer 53 of the intermediate transfer medium 60 is affected, and the damage received by the receiving layer 53 during the formation of the thermal transfer image is greater, the adhesion between the transfer target 100 and the receiving layer 53 on which the thermal transfer image has been formed is improved. It is assumed that it will be lower. In order to form a high-density image on the receiving layer 53 of the intermediate transfer medium 60, it is necessary to increase the energy applied to the back side of the thermal transfer sheet 10 when forming the thermal transfer image.
- the thermal transfer sheet 10 used in the combination of one embodiment constitutes the thermal transfer sheet 10, and the primer layer 2 positioned between the base material 1 and the color material layer 3 is a particle derived from colloidal inorganic particles, 1 type or 2 types or more selected from the group of polyvinyl alcohol-type resin, polyvinylpyrrolidone-type resin, and polyurethane-type resin are characterized by the above-mentioned.
- colloidal inorganic particle-derived particles, polyvinyl alcohol resins, polyvinyl pyrrolidone resins, and polyurethane resins may be collectively referred to as “a group of components”.
- an image having a high density can be formed on the receiving layer 53 of the intermediate transfer medium 60 described later without applying high energy when forming the thermal transfer image.
- a thermal transfer image having a high density can be formed on the receiving layer 53 while suppressing the receiving layer 53 of the intermediate transfer medium 60 from being thermally damaged.
- transferability when transferring the receiving layer 53 on which the thermal transfer image is formed on the transfer target 100 in other words, The adhesion between the transfer body 100 and the receiving layer 53 on which the thermal transfer image is formed can be improved, and furthermore, the receiving layer 53 on which the thermal transfer image is formed is transferred onto the transfer body 100.
- the durability of the obtained printed matter can also be improved. Furthermore, according to the thermal transfer sheet that can form a high density image on the receiving layer 53 of the intermediate transfer medium 60 described later without applying high energy, when forming a high density image, Due to the energy, it is possible to suppress thermal fusion or the like between the receiving layer 53 and the color material layer 3. Therefore, when the color material layer 3 is peeled off from the receiving layer 53 after the thermal transfer image is formed, the receiving layer that should remain on the base material side of the intermediate transfer medium is shifted to the thermal transfer sheet side. Transfer and the like can be suppressed.
- the thermal transfer sheet used in the combination of one embodiment when the color material layer 3 is peeled from the receiving layer 53 after forming a high-density image by suppressing the occurrence of thermal fusion or the like. It is also possible to improve the releasability.
- the various effects described above can be obtained.
- the mechanism to be exhibited is not necessarily clear at present, but the primer layer 2 containing “a group of components” has good transfer sensitivity, in other words, good energy transfer efficiency. With this good transfer sensitivity, it is presumed that a high-density thermal transfer image can be formed without increasing the energy applied to the back side of the thermal transfer sheet 10.
- the primer layer 2 containing “a group of components” is not positioned between the base material 1 and the color material layer 3, or when the primer layer not containing a “group of components” is positioned, In order to obtain a thermal transfer image with high density, the energy applied to the back side of the thermal transfer sheet must be increased, and printing wrinkles and printing unevenness are likely to occur. In addition, when the primer layer 2 containing “a group of components” is not positioned between the base material 1 and the color material layer 3, the adhesion between the base material 1 and the color material layer 3 becomes insufficient. During the formation of the thermal transfer image, abnormal transfer in which the color material layer 3 is taken to the receiving layer 53 side is likely to occur.
- the primer layer 2 only needs to contain at least one kind of “group of components”, but may contain two or more kinds of “group of components”. Further, the content of the “group of components” contained in the primer layer 2 is not particularly limited. Regardless of the content, the content of the “group of components” is included in the thermal transfer onto the receiving layer 53. The transfer sensitivity when forming an image can be improved.
- the primer layer 2 in a preferred form contains “a group of components” in a total solid mass of 30% by mass or more with respect to the total solid mass of the primer layer 2.
- the primer layer 2 contains colloidal inorganic particle-derived particles in a total solid mass of 50% by mass or more with respect to the total solid mass of the “group of components”, 60% by mass or more of “group of components” including particles derived from colloidal inorganic particles is contained relative to the total solid mass of layer 2, and more preferably, “group of particles including particles derived from colloidal inorganic particles” Ingredient "is contained 81% by mass or more.
- the thermal transfer sheet 10 having the primer layer 2 of a preferred form the transfer sensitivity when forming a thermal transfer image on the receiving layer 53 can be improved, and the energy applied to the thermal transfer sheet 10 is lower, A high-density thermal transfer image can be formed on the receiving layer 53.
- Examples of the particles derived from colloidal inorganic particles included in the “group of components” include metal silicates such as aluminum silicate and magnesium silicate; alumina, silica; metal oxides such as magnesium oxide and titanium oxide; Examples thereof include carbonates such as magnesium carbonate.
- alumina particles and silica particles specifically, alumina particles derived from alumina sol (or colloidal alumina) and silica particles derived from silica sol (or colloidal silica) further improve the heat resistance and transfer sensitivity of the primer layer 2. It is a preferable particle in that improvement is expected.
- the average particle diameter of the particles derived from colloidal inorganic particles is preferably 200 nm or less, and particularly preferably 100 nm or less.
- the average particle diameter can be obtained by a method of directly measuring the size of primary particles from an electron micrograph of a vertical cross section of a thermal transfer sheet used in the combination of one embodiment. Specifically, the minor axis diameter and major axis diameter of each primary particle are measured, and the average is taken as the particle diameter of the particle. Next, for 100 or more particles, the volume (weight) of each particle is determined. The volume average particle diameter is obtained by approximating a rectangular parallelepiped having the obtained particle diameter, and this is used as the average particle diameter. The same result can be obtained regardless of whether the electron microscope is a transmission type (TEM) or a scanning type (SEM).
- TEM transmission type
- SEM scanning type
- particles derived from colloidal inorganic particles are treated with an acidic type by adding a dispersion stabilizer such as hydrochloric acid or acetic acid for the purpose of facilitating dispersion in a sol form in an aqueous solvent, and the particle charge is made positive.
- a dispersion stabilizer such as hydrochloric acid or acetic acid
- the particle charge is made positive.
- surface-treated ones can be used.
- the polyvinyl alcohol resin referred to in the present specification means a resin containing a vinyl alcohol polymer as a constituent element thereof, which may be a homopolymer of vinyl alcohol or a copolymer with other polymerization components. May be.
- the copolymer of vinyl alcohol and another polymerization component as a polyvinyl alcohol-type resin, it is preferable that the copolymerization ratio of the vinyl alcohol in the said copolymer is 50% or more.
- denatured polyvinyl alcohol partially can also be used as a polyvinyl alcohol-type resin.
- the polyvinylpyrrolidone resin referred to in the present specification means a homopolymer of a vinylpyrrolidone monomer or a copolymer of a vinylpyrrolidone monomer and another monomer.
- the polyvinylpyrrolidone-based resin may be a homopolymer of a vinylpyrrolidone monomer such as vinylpyrrolidone such as N-vinyl-2-pyrrolidone or N-vinyl-4-pyrrolidone, that is, polyvinylpyrrolidone.
- Copolymers with other monomers may also be used.
- a vinyl monomer is suitable as the other monomer.
- vinyl monomers examples include cyclohexyl vinyl ether, ethyl vinyl ether, hydroxyethyl vinyl ether, hydroxybutyl vinyl ether, vinyl ethers such as hydroxycyclohexyl vinyl ether, fatty acid vinyl esters such as vinyl acetate and vinyl lactate, methyl (meth) acrylate, and ethyl (meth) acrylate. And (meth) acrylic acid esters such as hydroxyethyl (meth) acrylate and hydroxypropyl (meth) acrylate, and allyl ethers such as hydroxybutyl allyl ether and ethylene glycol monoallyl ether.
- the copolymer of vinyl pyrrolidone and vinyl monomer a commercially available product can be used.
- a commercial product of a copolymer of vinyl pyrrolidone and vinyl acetate Rubiscol VA28 manufactured by BASF or Rubiscol VA73 is available. Etc.
- polyvinyl pyrrolidone resins include N-vinyl-3-methylpyrrolidone, N-vinyl-5-methylpyrrolidone, N-vinyl-3,3,5-trimethylpyrrolidone, N-vinyl-3-benzyl.
- a polymer containing a derivative having a substituent on the pyrrolidone ring such as pyrrolidone can also be used.
- the polyurethane-based resin means a resin having a polyol (polyhydric alcohol) as a main agent and an isocyanate as a crosslinking agent (curing agent).
- the polyol include those having two or more hydroxyl groups in the molecule, such as polyethylene glycol, polypropylene glycol, acrylic polyol, polyester polyol, polyether polyol, alkyd-modified acrylic polyol, and the like.
- the polyurethane resin may be a water-based polyurethane resin that can be a stable dispersion in an aqueous medium such as water, water-soluble alcohol such as isopropyl alcohol, or a mixture of water and water-soluble alcohol, and is soluble in an organic solvent. Alternatively, a dispersible solvent-based polyurethane resin may be used.
- a cured product of a polyvinyl alcohol resin and a curing agent or a cured product of a polyvinyl pyrrolidone resin and a curing agent can be used.
- the curing agent include metal chelating agents such as isocyanate curing agents, titanium chelating agents, zirconium chelating agents, and aluminum chelating agents.
- a group of components a copolymer of a polyvinyl alcohol resin and another resin, a copolymer of a polyvinyl pyrrolidone resin and another resin, a copolymer of a polyurethane resin and another resin, It can also be used.
- the copolymer referred to here means a copolymer in which the copolymerization ratio of the resin components contained in the “group of components” is 40% or more by molar ratio.
- the primer layer 2 may contain other components together with “a group of components”.
- the other components include other resin components other than the resin components included in the “group of components”.
- other resin components include polyester resins, polyvinyl acetate resins, styrene acrylate resins, polyacrylamide resins, polyamide resins, polyether resins, polystyrene resins, polypropylene resins, polyvinyl acetoacetals and polyvinyl resins.
- the resin component include polyvinyl acetal resins such as butyral.
- curing agent can also be used as these other components.
- particles other than particles derived from colloidal inorganic particles may be contained.
- Other particles include, for example, clay minerals such as talc and kaolin, inorganic particles such as graphite, nitrate, and boron nitride, acrylic resin, Teflon (registered trademark) resin, silicone resin, lauroyl resin, phenol resin, acetal resin, Examples thereof include organic particles such as polystyrene resin and nylon resin, or crosslinked particles obtained by reacting these with a crosslinking agent.
- the primer layer 2 is any one of alumina particles derived from alumina sol, a cured product of a polyvinyl alcohol resin and a curing agent, and a polyvinyl pyrrolidone resin as the “group of components”. Contains. According to the more preferable form of the thermal transfer sheet 10, it is possible to form a high-density image with lower energy, and to further suppress thermal damage to the receiving layer 53.
- the thickness of the primer layer 2 it is preferable that it is the range of 0.02 micrometer or more and 2 micrometers or less. By setting the thickness of the primer layer within this range, it is possible to improve both the adhesion between the base material 1 and the color material layer 3 and the transfer sensitivity during thermal transfer image formation.
- the method for forming the primer layer 2 is also not particularly limited.
- the “group of components” is particles derived from colloidal inorganic particles, for example, silica particles or alumina particles are dissolved in an aqueous solvent or the like.
- the primer layer coating solution dispersed in the substrate can be prepared, and can be formed on the substrate 1 by coating and drying.
- a method for applying the primer layer coating liquid is not particularly limited, and a conventionally known coating method can be appropriately selected and used. Examples of the coating method include a gravure printing method, a screen printing method, a reverse coating method using a gravure plate, and the like. Moreover, 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.
- drying method examples include a method of removing the aqueous solvent by hot air drying or the like.
- the “group of components” is a resin component such as polyvinyl alcohol resin, polyvinyl pyrrolidone resin, polyurethane resin, etc.
- a coating solution can be prepared and applied to the substrate 1 and dried to form.
- the primer layer 2 can also be formed by combining silica particles or alumina particles dispersed in a sol form in an aqueous solvent or the like and a resin component.
- a color material layer 3 is provided on the primer layer 2 (in the illustrated form, the upper surface side of the primer layer 2).
- the color material layer 3 is an essential component in the thermal transfer sheet 10 used in the combination of one embodiment, and contains a binder resin and a color material.
- the color material contained in the color material layer 3 is not particularly limited, but preferably has a sufficient color density and does not discolor due to light, heat, temperature, or the like.
- colorants include diarylmethane dyes, triarylmethane dyes, thiazole dyes, merocyanine dyes, pyrazolone dyes, methine dyes, indoaniline dyes, pyrazolomethine dyes, acetophenone azomethine, pyrazoloazomethine.
- Azomethine dyes such as imidazol azomethine, imidazoazomethine and pyridone azomethine, xanthene dyes, oxazine dyes, cyanostyrene dyes such as dicyanostyrene and tricyanostyrene, thiazine dyes, azine dyes, acridine dyes, benzeneazo Dyes, pyridone azo, thiophenazo, isothiazole azo, pyrrole azo, pyrazole azo, imidazole azo, thiadiazole azo, triazole azo, disazo azo dyes, spiropyran dyes, Command Linus Piropi run dyes, fluoran dyes, rhodamine lactam dyes, naphthoquinone dyes, anthraquinone dyes, quinophthalone dyes.
- red dyes such as MSRedG (Mitsui Toatsu Chemicals), Macrolex Red Violet R (Bayer), CeresRed 7B (Bayer), Samalon Red F3BS (Mitsubishi Chemical), etc.
- Holon Brilliant Yellow Yellow dyes such as 6GL (Clariant), PTY-52 (Mitsubishi Chemical Corporation), Macrolex Yellow 6G (Bayer), Kayaset (registered trademark) Blue 714 (Nippon Kayaku Co., Ltd.), Holon Brilliant Blue S -R (Clariant), MS Blue 100 (Mitsui Toatsu Chemicals), C.I. I.
- blue dyes such as Solvent Blue 63.
- binder resin for example, cellulose resins such as ethyl cellulose, cellulose acetate propionate, cellulose acetate butyrate, methyl cellulose, cellulose acetate, cellulose butyrate, polyvinyl alcohol, polyvinyl acetate, polyvinyl butyral, polyvinyl acetal, Examples thereof include vinyl resins such as polyacrylamide, polyester resins, and phenoxy resins.
- cellulose resins such as ethyl cellulose, cellulose acetate propionate, cellulose acetate butyrate, methyl cellulose, cellulose acetate, cellulose butyrate, polyvinyl alcohol, polyvinyl acetate, polyvinyl butyral, polyvinyl acetal
- vinyl resins such as polyacrylamide, polyester resins, and phenoxy resins.
- the color material layer 3 in a preferable form has a color material of 50% by mass to 350% by mass, particularly, It is contained in the range of 80% by mass to 300% by mass. According to the color material layer 3 in a preferable form, it is possible to form a thermal transfer image having a higher density in combination with the primer layer 2 described above. Moreover, the preservability of the thermal transfer sheet 10 used in the combination of one embodiment can be improved.
- the color material layer 3 for example, the color material described above, a binder resin, and other components contained as necessary may be used as appropriate, such as toluene, methyl ethyl ketone, ethanol, isopropyl alcohol, cyclohexane, dimethylformamide, and the like. It can be formed by preparing a coating liquid dispersed or dissolved in an appropriate solvent, and applying and drying it on the primer layer 2. Although there is no limitation in particular about the thickness of the color material layer 3, the range of 0.1 micrometer or more and 3 micrometers or less is preferable.
- the thermal transfer sheet used in the combination of one embodiment it is possible to form an image having a high density without applying high energy, thereby releasing the color material layer 3 from the receiving layer 53.
- the colorant layer 3 may contain various release agents for the purpose of further improving the release property.
- release agent conventionally known release agents, for example, solid waxes such as polyethylene wax, amide wax, Teflon (registered trademark) powder, fluorine-based and phosphate ester-based surfactants, silicone resin, silicone oil, etc. These may be used alone or in combination of two or more.
- a modified silicone oil examples include side chain modified silicone oil, both terminal modified silicone oil, one terminal modified silicone oil, side chain both terminal modified silicone oil, silicone graft acrylic resin, and methylphenyl silicone oil. it can.
- Modified silicone oil is classified into reactive silicone oil and non-reactive silicone oil.
- the reactive silicone oil include amino-modified, epoxy-modified, carboxyl-modified, carbinol-modified, methacryl-modified, mercapto-modified, phenol-modified, one-terminal reactivity, and modified with different functional groups.
- the non-reactive silicone oil include polyether-modified, methylstyryl-modified, alkyl-modified, higher fatty acid ester-modified, hydrophilic special modification, higher alkoxy-modified, higher fatty acid-modified and fluorine-modified.
- the content of the release agent is not particularly limited, and can be appropriately adjusted in relation to the receiving layer 53 of the intermediate transfer medium 60 described later.
- the receiving layer 53 of the intermediate transfer medium 60 is not included in the color material layer 3. Further, it is possible to further improve the releasability from the color material layer 3 of the thermal transfer sheet.
- the countermeasure for releasability is not performed on the receiving layer 53 side of the intermediate transfer medium 60, that is, when the receiving layer 53 does not contain a release agent, or when its content is very small.
- the color material layer 3 preferably contains a release agent, and the release material is contained in the range of 0.3% by mass to 30% by mass with respect to the total mass of the color material layer 3. More preferably. According to the color material layer 3 in a preferred form, the releasability of the intermediate transfer medium 60 from the receiving layer 53 can be further improved.
- the total amount of the release agent content (% by mass) with respect to the total mass of the color material layer 3 and the release agent content (% by mass) with respect to the total mass of the receiving layer 53 is 0.3% by mass. It is preferable that either one or both of the colorant layer 3 and the receiving layer 53 contain a release agent so that the range is 30% by mass or less. In this case, the receiving layer 53 more preferably contains a release agent in the range of 0.5 to 20% by mass, and in the range of 0.5 to 15% by mass. It is more preferable to contain, and it is especially preferable to contain in 0.5 to 10 mass%.
- the back layer 5 is provided on the other surface of the substrate 1 (in the form shown in FIGS. 1 and 2, the lower surface side of the substrate layer 1).
- the back layer 5 is an arbitrary configuration in the thermal transfer sheet 10 used in the combination of the embodiment.
- Examples of the resin contained in the back layer 5 include cellulose resins such as ethyl cellulose, hydroxy cellulose, hydroxypropyl cellulose, methyl cellulose, cellulose acetate, cellulose acetate butyrate, nitrocellulose, polyvinyl alcohol, polyvinyl acetate, polyvinyl butyral, Vinyl resins such as polyvinyl acetal and polyvinyl pyrrolidone, acrylic resins such as polymethyl methacrylate, polyethyl acrylate, polyacrylamide, and acrylonitrile-styrene copolymers, polyamide resins, polyvinyl toluene resins, coumarone indene resins, polyester resins A simple substance or a mixture of natural or synthetic resins such as resin, polyurethane resin, silicone-modified or fluorine-modified urethane is used.
- cellulose resins such as ethyl cellulose, hydroxy cellulose, hydroxypropyl cellulose, methyl cellulose
- a resin having a hydroxyl group-based reactive group can be used, and a polyisocyanate or the like can be used in combination as a crosslinking agent to obtain a crosslinked resin.
- a release agent or a lubricant can be contained in the back layer 5 in order to improve the slidability with a heating member such as a thermal head.
- the release agent or lubricant include various waxes such as polyethylene wax and paraffin wax, higher aliphatic alcohols, organopolysiloxanes, anionic surfactants, cationic surfactants, amphoteric surfactants, nonionic surfactants.
- Activators, fluorosurfactants, organic carboxylic acids and derivatives thereof, fluororesins, silicone resins, fine particles of inorganic compounds such as talc, silica, and the like can be used.
- the amount of the lubricant contained in the back layer is in the range of 5 to 50% by mass, preferably 10 to 30% by mass.
- the method for forming the back layer 5 is not particularly limited.
- a back layer coating solution is prepared by dissolving or dispersing a release agent, a lubricant, or the like in a resin in an appropriate solvent as necessary. It can be formed on the other surface of 1 by coating and drying.
- the thickness of the back layer 5 is not particularly limited, but is in the range of 0.1 ⁇ m to 10 ⁇ m.
- FIG. 3 is a schematic cross-sectional view of the intermediate transfer medium 60 used in the combination of the embodiments.
- each configuration of the intermediate transfer medium 60 used in the combination of the embodiments will be described.
- the other substrate 51 is an essential configuration in the intermediate transfer medium 60 used in the combination of the embodiments, and the protective layer 52 provided on one surface of the other substrate 51 and the other substrate 51 A back layer 55 is optionally provided on the other surface.
- the material of the other base material 51 is not particularly limited, but it can withstand the heat applied when transferring the protective layer 52 provided on the other base material 51 together with the receiving layer 53 onto the transfer target, and is handled. It is desirable to have mechanical properties that do not hinder the top.
- Examples of such another base material 51 include stretched or unstretched plastics such as polyester, polypropylene, polycarbonate, cellulose acetate, polyethylene derivatives, polyamide, polymethylpentene, etc., which have high heat resistance such as polyethylene terephthalate and polyethylene naphthalate.
- a film is mentioned.
- stacked 2 or more types of these materials can also be used.
- the thickness of the other base material 51 can be appropriately selected according to the material so that the strength, heat resistance, and the like are appropriate, but a range of 1 ⁇ m to 100 ⁇ m is preferable.
- the protective layer 52 and the receiving layer 53 provided on the other base material 51 are layers that are peeled off from the other base material 51 and transferred onto the transfer medium during thermal transfer. Therefore, in the present specification, a laminate of the protective layer 52 and the receiving layer 53 is referred to as a transfer layer 50.
- a protective layer 52 is provided on the other substrate 51.
- the protective layer 52 is an essential component of the intermediate transfer medium 60 used in the combination of the embodiments, and is a layer that imparts durability to the printed matter formed by the combination of the embodiments.
- the resin component constituting the protective layer 52 is not particularly limited.
- a polyester resin, a polycarbonate resin, an acrylic resin, an ultraviolet absorbing resin, an epoxy resin, a polystyrene resin, a polyurethane resin, an acrylic urethane resin, and these resins are modified with silicone. And a mixture of these resins, an ionizing radiation curable resin, and an ultraviolet absorbing resin.
- the protective layer 52 containing an ionizing radiation curable resin can be suitably used as a resin component of the protective layer 52 in that it has particularly excellent plasticizer resistance and scratch resistance.
- the ionizing radiation curable resin is not particularly limited and can be appropriately selected from conventionally known ionizing radiation curable resins.
- a radical polymerizable polymer or oligomer can be crosslinked by irradiation with ionizing radiation. Cured, added with a photopolymerization initiator as required, and polymerized and cross-linked with an electron beam or ultraviolet light can be used.
- the protective layer 52 containing an ultraviolet-absorbing resin high light resistance can be imparted to a printed material formed using the intermediate transfer medium 60 having the protective layer 52.
- the ultraviolet absorbing resin for example, a resin obtained by reacting and bonding a reactive ultraviolet absorber to a thermoplastic resin or the above ionizing radiation curable resin can be used.
- a resin obtained by reacting and bonding a reactive ultraviolet absorber to a thermoplastic resin or the above ionizing radiation curable resin can be used.
- addition polymerizable double bonds to conventionally known non-reactive organic UV absorbers such as salicylates, benzophenones, benzotriazoles, substituted acrylonitriles, nickel chelates, hindered amines, etc.
- a vinyl group, an acryloyl group, a methacryloyl group, etc. an alcoholic hydroxyl group, an amino group, a carboxyl group, an epoxy group, and a group introduced with a reactive group such as an isocyanate group
- a reactive group such as an isocyanate group
- a lubricant for example, a plasticizer, a filler, an antistatic agent, an antiblocking agent, a crosslinking agent, an antioxidant, an ultraviolet absorber, a light stabilizer, a dye, a colorant such as a pigment, and the like. Additives and the like may be added.
- the method for forming the protective layer 52 is not particularly limited, and a protective layer coating solution is prepared by dissolving or dispersing one or more of the resin materials exemplified above with an appropriate solvent. It can be formed by applying and drying on the substrate 51 (or a release layer (not shown) optionally provided on another substrate 51 as required).
- the thickness of the protective layer 52 is not particularly limited, but is usually in the range of 0.1 ⁇ m to 50 ⁇ m, and preferably in the range of 1 ⁇ m to 20 ⁇ m.
- a receiving layer 53 is provided on the protective layer 52.
- the color material of the color material layer 3 constituting the thermal transfer sheet 10 used in the combination of the above-described embodiments is transferred by thermal transfer to form a thermal transfer image.
- the transfer layer 50 of the intermediate transfer medium 60 is transferred onto the transfer target, and as a result, a printed product 200 in which the transfer layer 50 is provided on the transfer target is obtained. .
- the thermal transfer sheet 10 used in the combination includes the primer layer 2 containing “a group of components”, the receiving layer 53 receives when forming the thermal transfer image.
- a thermal transfer image having a high density can be formed on the receiving layer 53 in a state where damage is suppressed.
- the components contained in the receiving layer 53 are not particularly limited, but the receiving layer 53 receives the color material contained in the color material layer 3 constituting the thermal transfer sheet 10 used in the combination of the above-described embodiment. It is preferable to contain an easy component.
- examples of such components include polyolefin resins such as polypropylene, halogenated resins such as polyvinyl chloride and polyvinylidene chloride, polyvinyl acetate, vinyl chloride-vinyl acetate copolymers, and ethylene-vinyl acetate copolymers.
- vinyl resins such as polyacrylates, polyester resins such as polyethylene terephthalate or polybutylene terephthalate, polystyrene resins, polyamide resins, copolymers of olefins such as ethylene or propylene and other vinyl polymers, ionomers or cellulose
- cellulose resins such as diastase, polycarbonates and the like, and vinyl chloride resins, acrylic-styrene resins or polyester resins are particularly preferable.
- the content of the resin component contained in the receiving layer 53 is not particularly limited, but the content of the resin component is preferably 50% by mass or more with respect to the total mass of the receiving layer 53.
- the receptor layer 53 in a preferred form contains a resin component having a number average molecular weight (Mn) of 6000 to 35000, particularly 6000 to 30000 as a resin component. According to the preferable form of the receiving layer 53, it is possible to further improve the durability of the printed product 200 formed by the combination of the embodiments. Further, by using a resin component having a number average molecular weight (Mn) of 35000 or less, particularly 30000 or less, transferability can be further improved, and occurrence of tailing or the like during transfer is sufficiently suppressed. Can do.
- the number average molecular weight (Mn) mentioned in the present specification means a molecular weight in terms of polystyrene measured by GPC (gel permeation chromatography) in accordance with JIS-K-7252-1 (2008).
- the receiving layer 53 in a preferred form contains a resin component having a glass transition temperature (Tg) of 60 ° C. or more and 100 ° C. or less as a resin component.
- Tg glass transition temperature
- the receiving layer 53 it is possible to further improve the durability of the printed product 200 formed by the combination of the embodiments.
- blocking resistance can be improved by using the resin component whose glass transition temperature (Tg) is 60 degreeC or more.
- Tg glass transition temperature
- Tg glass transition temperature
- the glass transition temperature (Tg) referred to in the present specification is a temperature determined based on a measurement of a change in calorie (DSC method) by DSC (differential scanning calorimetry) in accordance with JIS-K-7121 (2012). means.
- the particularly preferred form of the receiving layer 53 contains, as a resin component, a resin component having a number average molecular weight (Mn) of 6000 to 35,000 and a glass transition temperature (Tg) of 60 ° C. to 100 ° C. .
- the receiving layer 53 may contain various release agents. According to the receiving layer 53 containing a release agent, the color material layer 3 and the receiving layer 53 when forming a thermal transfer image on the receiving layer 53 in combination with the thermal transfer sheet 10 used in the combination of the above-described embodiment.
- the receptor layer that should remain on the base material side of the intermediate transfer medium is originally on the thermal transfer sheet side. Abnormal transfer and the like that are transferred can be suppressed. That is, the releasability between the receiving layer 53 of the intermediate transfer medium and the color material layer 3 of the thermal transfer sheet can be improved.
- the release agent described in the color material layer 3 of the thermal transfer sheet can be appropriately selected and used, and the description thereof is omitted here.
- the release agent when taking measures to improve the releasability on the color material layer 3 side of the thermal transfer sheet, the release agent can be further improved without containing the release agent in the receiving layer 53.
- the receiving layer 53 contains a release agent. More preferably, the release agent is contained in the range of 0.5% by mass to 20% by mass with respect to the total mass of the receiving layer 53, and in the range of 0.5% by mass to 15% by mass. It is more preferable to contain, and it is especially preferable to contain in the range of 2.5 mass% or more and 10 mass% or less.
- the transfer layer 50 including the receiving layer 53 on which the thermal transfer image is formed can be transferred while further improving the releasability of the thermal transfer sheet 10 from the color material layer 3. Transferability when transferring onto the body, that is, adhesion between the transfer layer 50 and the transfer target can be sufficiently satisfied.
- the release agent has a role of improving the releasability with the color material layer 3 of the thermal transfer sheet 10.
- the release agent and the transfer target 100 are transferred. It has the property of easily hindering adhesion with the layer 50.
- the particularly preferred form of the receiving layer 53 contains a release agent and a resin component having a number average molecular weight (Mn) of 6000 or more and 35000 or less, and the content of this release agent is the above-mentioned preferred form of the receiving layer.
- the content is as described.
- the receiving layer 53 contains the resin component whose number average molecular weight (Mn) is 13000 or more.
- the number average molecular weight (Mn) is preferably 25,000 or more.
- the method for forming the receiving layer 53 is not particularly limited.
- a receiving layer coating solution is prepared by dissolving or dispersing various components such as a resin component and a release agent added as necessary with an appropriate solvent. And it can apply
- the thickness of the receiving layer 53 is not particularly limited, but is preferably in the range of 1 ⁇ m to 10 ⁇ m.
- a release layer (not shown) can be provided between the other substrate 51 and the protective layer 52 in order to improve the peelability of the transfer layer 50 from the other substrate 51.
- components constituting the release layer include waxes, silicone waxes, silicone resins, silicone-modified resins, fluorine resins, fluorine-modified resins, polyvinyl alcohol, acrylic resins, heat-crosslinkable epoxy-amino resins, and heat-crosslinkable alkyds. An amino resin etc. are mentioned.
- the release layer may be composed of one kind of component, or may be composed of two or more kinds of components.
- the release layer can also be formed using a release agent resin and a catalyst such as a crosslinking agent such as an isocyanate compound, a tin-based catalyst, and an aluminum-based catalyst.
- the release layer is a layer that constitutes the transfer layer 50, and is a layer that is transferred to the transfer target 100 side together with the protective layer 52 and the receiving layer 53 during thermal transfer.
- the thickness of the release layer is not particularly limited and is usually in the range of 0.5 to 5 ⁇ m.
- the method for forming the release layer is not particularly limited, and a release layer coating solution in which the above components are dissolved or dispersed in an appropriate solvent is prepared, and this is applied to and dried on another substrate 51. be able to.
- plasticizer resistant layer Further, for the purpose of improving the plasticizer resistance of a printed material formed using the combination of one embodiment, as a layer constituting the transfer layer 50, for example, between the protective layer and the receiving layer or peeling.
- a plasticizer-resistant layer (not shown) may be provided between the layer and the protective layer.
- the plasticizer resistant layer is an arbitrary layer constituting the transfer layer 50.
- a component that repels the plasticizer component or a material that does not easily reach the image can be preferably used.
- the component that repels the plasticizer component include polyvinyl alcohol resin, polyvinyl butyral resin, polyvinyl acetal resin, polyvinyl pyrrolidone resin, and the like.
- the material in which the plasticizer component hardly reaches the image include cationic resins such as a cationic urethane emulsion. These materials may be used alone or in combination of two or more.
- the polyvinyl alcohol resin, polyvinyl butyral resin, and polyvinyl acetal resin exemplified as the material for repelling the plasticizer component preferably have a saponification degree of 30% or more, and more preferably 60% or more.
- a polyvinyl alcohol resin, a polyvinyl butyral resin, or a polyvinyl acetal resin having a saponification degree in this range in the plasticizer-resistant layer the plasticizer resistance of the printed matter to be formed can be further improved.
- the saponification degree said in this-application specification means the value which divided the number of moles of the vinyl alcohol structure in a polymer by the number of moles of all the monomers in a polymer.
- the component that repels the plasticizer component and the component that is difficult for the plasticizer component to reach the image are preferably contained in the range of 20% by mass to 100% by mass with respect to the total mass of the plasticizer-resistant layer.
- the plasticizer-resistant layer may include, for example, a lubricant, a plasticizer, a filler, an antistatic agent, an antiblocking agent, a crosslinking agent, an antioxidant, an ultraviolet absorber, a light stabilizer, a dye, Colorants such as pigments, fluorescent brighteners, other additives, and the like may be added.
- the plasticizer-resistant layer provided as necessary is a plasticizer-resistant layer in which one or more of the above-exemplified materials and various materials added as necessary are dissolved or dispersed in an appropriate solvent.
- the coating liquid can be prepared and applied and dried on the protective layer 52 or a release layer provided as necessary.
- the thickness of a plasticizer-resistant layer the range of 0.1 micrometer or more and 50 micrometers or less is preferable, and the range of 1 micrometer or more and 20 micrometers or less is preferable.
- the back layer 55 may be provided on the other surface of the other base material 51.
- the back layer 55 is an arbitrary configuration in the intermediate transfer medium 60 used in the combination of the embodiments.
- the back layer 55 the back layer 5 described in the thermal transfer sheet 10 used in the combination of the above embodiment can be used as it is, and detailed description thereof is omitted here.
- a method for forming a printed matter according to an embodiment of the present invention (hereinafter referred to as a method for forming a printed matter according to an embodiment) will be described.
- a thermal transfer sheet 10 in which a primer layer 2 and a color material layer 3 are laminated in this order on one surface of a substrate 1.
- an intermediate transfer medium 60 in which a protective layer 52 and a receiving layer 53 are laminated in this order on one surface of another substrate 51, and a transfer target 100 are prepared.
- a transfer target 100 in which a protective layer 52 and a receiving layer 53 are laminated in this order on one surface of another substrate 51, and a transfer target 100 are prepared.
- the preparation step as shown in FIG.
- the color material contained in the color material layer 3 of the thermal transfer sheet 10 is transferred onto the receptor layer 53 of the intermediate transfer medium 60, and the receptor layer 53 is transferred to the receptor layer 53.
- the primer layer 2 of the thermal transfer sheet 10 used for forming the thermal transfer image X includes particles derived from colloidal inorganic particles, polyvinyl alcohol resin, polyvinyl pyrrolidone resin, polyurethane type. It is characterized by containing one or more selected from the group of resins.
- the method for forming a printed matter it is possible to form a high-density thermal transfer image while suppressing damage to the receiving layer 53 during thermal transfer image formation.
- the transfer property when the transfer layer 50 including the receiving layer 53 on which the thermal transfer image is formed is transferred onto the transfer target 100 to form the printed product 200, in other words, Adhesiveness between the transfer layer 50 and the transfer target 100 can also be improved.
- each step will be described.
- This step is a step of preparing the thermal transfer sheet 10, the intermediate transfer medium 60, and the transfer target 100.
- the thermal transfer sheet 10 and the intermediate transfer medium 60 prepared in this step the thermal transfer sheet 10 (see FIGS. 1 and 2) and the intermediate transfer medium 60 (see FIG. 3) described in the combination of the above-described embodiments are used as they are. Detailed description is omitted here.
- Transfer material There is no particular limitation on the transfer object 100, and examples thereof include card base materials used in the field of ID cards and IC cards, natural fiber paper, coated paper, tracing paper, glass, metal, ceramics, wood, and cloth. Yes, but not limited to this.
- the card substrate include a resin sheet molded from a polyvinyl chloride resin, a vinyl chloride-vinyl acetate copolymer, a polyester resin, and a metal sheet. What is necessary is just to determine the thickness of a card
- curd base material suitably according to the use application of the printed matter finally formed.
- a card substrate that has been conventionally considered difficult to satisfy the transferability of the transfer layer of the intermediate transfer medium is used as the transfer target. Also, the transferability of the transfer layer can be improved.
- the coloring material contained in the coloring material layer 3 of the thermal transfer sheet 10 is transferred onto the receiving layer 53 of the intermediate transfer medium 60, and the receiving layer 53 is moved to the receiving layer 53.
- the thermal transfer image is formed on the receiving layer 53 by causing the color material layer 3 of the thermal transfer sheet 10 and the receiving layer 53 of the intermediate transfer medium 60 to face each other, and from the back side of the thermal transfer sheet 10 by a heating member such as a thermal head. It can be performed by applying energy according to the thermal transfer image information.
- the receiving layer 53 on which the thermal transfer image is formed is transferred onto the transfer target 100 together with the protective layer 52.
- a printed product 200 is obtained in which the transfer layer 50 including the receiving layer 53 on which the thermal transfer image is formed is provided on the transfer target 100.
- the transfer target 100 and the intermediate transfer medium 60 having the receiving layer 53 on which the thermal transfer image is formed are overlapped.
- energy can be applied by a conventionally known heating means such as a thermal head, a hot plate, a hot stamper, a hot roll, a line heater, or an iron.
- a release layer On the substrate, a release layer, a protective layer, thus, an intermediate transfer medium 1 provided with a transfer layer in which the receiving layers were laminated in this order was obtained.
- the release layer coating solution, the protective layer coating solution, and the receiving layer coating solution were all applied by a gravure coater.
- a yellow color material layer coating liquid 1, a magenta color material layer coating liquid 1, and a cyan color material layer coating liquid 1 having the following compositions are sequentially arranged in such a manner that the thickness after drying becomes 0.6 ⁇ m. Application and drying gave thermal transfer sheet (1).
- Yellow dye represented by the following formula (1) 7 parts ⁇ Polyvinylacetoacetal resin 4 parts (ESREC (registered trademark) KS-5 Sekisui Chemical Co., Ltd.) ⁇ Methyl ethyl ketone 44.5 parts ⁇ Toluene 44.5 parts
- ⁇ Coating liquid 1 for magenta color material layer > -3 parts of magenta dye represented by the following formula (2)-5 parts of magenta dye (Disperse Violet 26)-4 parts of polyvinyl acetoacetal resin (ESREC (registered trademark) KS-5 Sekisui Chemical Co., Ltd.) ⁇ 44 parts of methyl ethyl ketone ⁇ 44 parts of toluene
- thermal transfer sheet (2) (Creation of thermal transfer sheet (2)) A thermal transfer sheet (2) was prepared in the same manner as the thermal transfer sheet (1) except that the primer layer was formed using the primer layer coating liquid 2 having the following composition instead of the primer layer coating liquid 1. did.
- thermal transfer sheet (3) A thermal transfer sheet (3) was prepared in the same manner as the thermal transfer sheet (1) except that the primer layer was formed using the primer layer coating liquid 3 having the following composition instead of the primer layer coating liquid 1. did.
- thermal transfer sheet (4) was prepared in the same manner as the thermal transfer sheet (1) except that the primer layer was formed using the primer layer coating liquid 4 having the following composition instead of the primer layer coating liquid 1. did.
- thermal transfer sheet (5) was prepared in the same manner as the thermal transfer sheet (1) except that the primer layer was formed using the primer layer coating liquid 5 having the following composition instead of the primer layer coating liquid 1. did.
- thermal transfer sheet (6) was prepared in the same manner as the thermal transfer sheet (1) except that the primer layer was formed using the primer layer coating liquid 6 having the following composition instead of the primer layer coating liquid 1. did.
- thermal transfer sheet (7) was prepared in the same manner as the thermal transfer sheet (1) except that the primer layer was formed using the primer layer coating liquid 7 having the following composition instead of the primer layer coating liquid 1. did.
- thermal transfer sheet (8) instead of the yellow color material layer coating liquid 1, the magenta color material layer coating liquid 1, and the cyan color material layer coating liquid 1, the yellow color material layer coating liquid 2 and the magenta color material layer having the following composition are used.
- Thermal transfer sheet (1) except that a yellow color material layer, a magenta color material layer, and a cyan color material layer were formed using the coating liquid 2 and the cyan color material layer coating liquid 2, respectively.
- a sheet (8) was prepared.
- Cyan dye (Disperse Blue 354) 2.5 parts Cyan dye 5 parts represented by the above formula (3) Polyvinyl acetoacetal resin 3.4 parts (ESREC (registered trademark) KS-5 Sekisui Chemical Co., Ltd.) ⁇ 0.6 parts of ethyl cellulose resin (Etocel STD45 Nisshinsei Co., Ltd.) ⁇ Methyl ethyl ketone 44.25 parts ⁇ Toluene 44.25 parts
- thermo transfer sheet (9) instead of the yellow color material layer coating liquid 1, the magenta color material layer coating liquid 1, and the cyan color material layer coating liquid 1, the yellow color material layer coating liquid 3 and the magenta color material layer having the following composition are used.
- Thermal transfer sheet (1) except that the yellow color material layer, the magenta color material layer, and the cyan color material layer were formed using the coating liquid 3 and the cyan color material layer coating liquid 3, respectively.
- a sheet (9) was prepared.
- ⁇ Coating liquid 3 for magenta color material layer > -3 parts of magenta dye represented by the above formula (2)-5 parts of magenta dye (Disperse Violet 26)-4 parts of polyvinyl acetoacetal resin (ESREC (registered trademark) KS-5 Sekisui Chemical Co., Ltd.) ⁇ Silicon oil 0.06 parts (X-22-3939 Shin-Etsu Chemical Co., Ltd.) ⁇ 44 parts of methyl ethyl ketone ⁇ 44 parts of toluene
- thermal transfer sheet (10) A thermal transfer sheet (10) was prepared in the same manner as the thermal transfer sheet (1) except that the primer layer was formed using the primer layer coating liquid 8 having the following composition instead of the primer layer coating liquid 1. did.
- a primer layer is formed using the primer layer coating solution 8 having the above composition instead of the primer layer coating solution 1, and the yellow color material layer coating solution 1, the magenta color material layer coating solution 1, Instead of the cyan color material layer coating liquid 1, yellow color material layer coating liquid 2, magenta color material layer coating liquid 2, and cyan color material layer coating liquid 2 having the above composition are used.
- a thermal transfer sheet (11) was prepared in the same manner as the thermal transfer sheet (1) except that the material layer, the magenta color material layer, and the cyan color material layer were formed.
- a primer layer is formed using the primer layer coating solution 8 having the above composition instead of the primer layer coating solution 1, and the yellow color material layer coating solution 1, the magenta color material layer coating solution 1, Instead of the cyan color material layer coating solution 1, a yellow color material layer coating solution 3, a magenta color material layer coating solution 3, and a cyan color material layer coating solution 3 having the above-described composition are used.
- a thermal transfer sheet (12) was prepared in the same manner as the thermal transfer sheet (1) except that the material layer, the magenta color material layer, and the cyan color material layer were formed.
- thermal transfer sheet and intermediate transfer medium Combination of thermal transfer sheet and intermediate transfer medium
- the thermal transfer sheet and intermediate transfer medium prepared above were combined as shown in Table 1 below, and this combination was used as each example and comparative example.
- 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) Line cycle: 3.0 (msec./line) Printing start temperature: 35 (°C) Pulse duty ratio: 85 (%)
- Evaluation criteria A: There is no abrasion scratch on the image. B: Slight scratches are generated on the image, but almost no visual check is possible. C: Wear scratches that can be visually confirmed in the image are generated, but at a level that does not cause a problem in use. NG (1): Abrasion scratches that can be visually confirmed in the image are considerably generated. NG (2): The image is markedly worn.
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- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
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Abstract
Description
以下、本発明の一実施形態の熱転写シートと中間転写媒体の組合せ(以下、一実施形態の組合せと言う)について図面を参照して説明する。
はじめに、一実施形態の組合せに用いられる熱転写シートについて説明する。図1、図2に示すように、一実施形態の組合せに用いられる熱転写シート10(以下、単に熱転写シートと言う場合がある)は、基材1の一方の面上に、プライマー層2、色材層3がこの順で積層されてなる構成を呈している。また、図示する形態では、基材1の他方の面上に背面層5が設けられている。基材1、プライマー層2、色材層3は、一実施形態の組合せに用いられる熱転写シート10における必須の構成であり、背面層5は任意の構成である。なお、図1に示す形態では、基材1の一方の面上に、プライマー層2を介して、1つの色材層3が設けられているが、図2に示すように、基材1の一方の面上に、プライマー層2を介して、複数の色材層3(図示する形態では、3M、3C、3Y)を面順次に設けることもできる。なお、図1、図2は、一実施形態の組合せに用いられる熱転写シート10の概略断面図である。以下、一実施形態の組合せに用いられる熱転写シート10の各構成について説明する。
基材1は、一実施形態の組合せに用いられる熱転写シート10における必須の構成であり、当該基材1の一方の面上に設けられるプライマー層2や、当該基材1の他方の面上に任意に設けられる背面層5を保持する。基材1の材料については特に限定されなく、例えば、ポリエチレンテレフタレート等のポリエステル、ポリアリレート、ポリカーボネート、ポリウレタン、ポリイミド、ポリエーテルイミド、セルロース誘導体、ポリエチレン、エチレン-酢酸ビニル共重合体、ポリプロピレン、ポリスチレン、アクリル、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリビニルアルコール、ポリビニルブチラール、ナイロン、ポリエーテルエーテルケトン、ポリサルフォン、ポリエーテルサルフォン、テトラフルオロエチレン-パーフルオロアルキルビニルエーテル共重合体、ポリビニルフルオライド、テトラフルオロエチレン-エチレン共重合体、テトラフルオロエチレン-ヘキサフルオロプロピレン共重合体、ポリクロロトリフルオロエチレン、ポリビニリデンフルオライド等の各種プラスチックフィルム、又はシート等を挙げることができる。
図1、図2に示すように、基材1の一方の面上(図示する形態では、基材1の上面側)にはプライマー層2が設けられている。プライマー層2は、一実施形態の組合せで用いられる熱転写シート10における必須の構成である。
図1、図2に示すように、プライマー層2上(図示する形態では、プライマー層2の上面側)には色材層3が設けられている。色材層3は、一実施形態の組合せで用いられる熱転写シート10における必須の構成であり、バインダー樹脂と、色材とを含有している。
図1、図2に示す形態では、基材1の他方の面上(図1、図2に示す形態では、基材層1の下面側)には、背面層5が設けられている。背面層5は、一実施形態の組合せに用いられる熱転写シート10における任意の構成である。
次に、一実施形態の組合せに用いられる中間転写媒体60について説明する。図3に示すように、一実施形態の組合せに用いられる中間転写媒体60(以下、単に中間転写媒体と言う場合がある)は、他の基材51の一方の面上に、保護層52、受容層53がこの順で積層されてなる構成を呈している。また、図示する形態では、他の基材51の他方の面上に背面層55が設けられている。他の基材51、保護層52、受容層53は、一実施形態の組合せに用いられる中間転写媒体60における必須の構成であり、背面層55は任意の構成である。なお、図3は、一実施形態の組合せに用いられる中間転写媒体60の概略断面図である。以下、一実施形態の組合せに用いられる中間転写媒体60の各構成について説明する。
他の基材51は、一実施形態の組合せに用いられる中間転写媒体60における必須の構成であり、他の基材51の一方の面上に設けられる保護層52、及び他の基材51の他方の面上に任意に設けられる背面層55を保持する。他の基材51の材料については特に限定されないが、他の基材51上に設けられている保護層52を、受容層53とともに被転写体上に転写する際に加えられる熱に耐え、取り扱い上支障のない機械的特性を有することが望ましい。このような他の基材51としては、例えば、ポリエチレンテレフタレート、ポリエチレンナフタレート等の耐熱性の高いポリエステル、ポリプロピレン、ポリカーボネート、酢酸セルロース、ポリエチレン誘導体、ポリアミド、ポリメチルペンテン等のプラスチックの延伸または未延伸フィルムが挙げられる。また、これらの材料を2種以上積層した複合フィルムも使用することができる。他の基材51の厚さは、その強度および耐熱性等が適切になるように材料に応じて適宜選択することができるが、1μm以上100μm以下の範囲が好ましい。
他の基材51上に設けられている保護層52、及び受容層53は、熱転写時において、他の基材51から剥離され、被転写体上に転写される層である。したがって、本願明細書では、保護層52、及び受容層53との積層体のことを、転写層50と称している。
他の基材51上には、保護層52が設けられている。保護層52は、一実施形態の組合せに用いられる中間転写媒体60における必須の構成であり、一実施形態の組合せにより形成される印画物に耐久性を付与する層である。
図3に示すように、保護層52上には受容層53が設けられている。この受容層53上には、熱転写により、上記一実施形態の組合せに用いられる熱転写シート10を構成する色材層3の色材が移行され、熱転写画像が形成される。受容層53上への熱転写画像の形成後、中間転写媒体60の転写層50は、被転写体上に転写され、その結果、被転写体上に転写層50が設けられた印画物200を得る。
また、一実施形態の組合せを用いて形成される印画物の耐可塑剤性の向上を目的として、転写層50を構成する層として、適宜の位置に、例えば保護層と受容層の間や剥離層と保護層の間等に耐可塑剤性層(図示しない)を設けてもよい。耐可塑剤性層は、転写層50を構成する任意の層である。耐可塑剤性層の成分としては、可塑剤成分を弾く成分や、可塑剤成分が画像に到達しにくい材料を好ましく使用することができる。可塑剤成分を弾く成分としては、ポリビニルアルコール樹脂、ポリビニルブチラール樹脂、ポリビニルアセタール樹脂、ポリビニルピロリドン樹脂等を挙げることができる。可塑剤成分が画像に到達しにくい材料としては、カチオン性のウレタンエマルジョン等のカチオン性樹脂を挙げることができる。これらの材料は単独で用いてもよく、2種以上を混合して用いることもできる。
また、他の基材51の他方の面上に背面層55を設けてもよい。背面層55は、一実施形態の組合せに用いられる中間転写媒体60における任意の構成である。背面層55としては、上記一実施形態の組合せに用いられる熱転写シート10で説明した背面層5をそのまま用いることができ、ここでの詳細な説明は省略する。
次に、本発明の一実施形態の印画物の形成方法(以下、一実施形態の印画物の形成方法と言う)について説明する。一実施形態の印画物の形成方法は、図1、図2に示すような、基材1の一方の面上に、プライマー層2、色材層3がこの順で積層されてなる熱転写シート10と、図3に示すような、他の基材51の一方の面上に、保護層52、受容層53がこの順で積層されてなる中間転写媒体60と、被転写体100とを準備する準備工程と、図4(a)に示すように、中間転写媒体60の受容層53上に、熱転写シート10の色材層3が含有している色材を移行させ、当該受容層53上に熱転写画像Xを形成する熱転写画像形成工程と、図4(b)に示すように、熱転写画像が形成された受容層53を、保護層52とともに、被転写体上に転写する印画物形成工程を含む。そして、一実施形態の印画物の形成方法は、熱転写画像Xの形成に用いられる熱転写シート10のプライマー層2が、コロイド状無機粒子由来の粒子、ポリビニルアルコール系樹脂、ポリビニルピロリドン系樹脂、ポリウレタン系樹脂の群から選択される1種、又は2種以上を含有していることを特徴としている。
本工程は、熱転写シート10、中間転写媒体60、及び被転写体100を準備する工程である。本工程で準備される熱転写シート10、及び中間転写媒体60は、上記一実施形態の組合せで説明した熱転写シート10(図1、図2参照)、中間転写媒体60(図3参照)をそのまま用いることができ、ここでの詳細な説明は省略する。
被転写体100について特に限定はなく、IDカードや、ICカードの分野で用いられるカード基材、天然繊維紙、コート紙、トレーシングペーパー、ガラス、金属、セラミックス、木材、布等を挙げることができるが、これに限定されるものではない。カード基材としては、例えば、ポリ塩化ビニル樹脂や、塩化ビニル-酢酸ビニル系共重合体、ポリエステル樹脂等から成型した樹脂シートや、金属シート等を挙げることができる。カード基材の厚みは、最終的に形成される印画物の使用用途に応じて適宜決定すればよい。特に、本発明の印画物の形成方法では、従来では、中間転写媒体の転写層の転写性を満足させることが困難であるとされているカード基材を被転写体として用いた場合であっても、転写層の転写性を良好なものとすることができる。
本工程は、図4(a)に示すように、中間転写媒体60の受容層53上に、熱転写シート10の色材層3が含有している色材を移行させ、当該受容層53上に熱転写画像Xを形成する工程である。受容層53上への熱転写画像の形成は、熱転写シート10の色材層3と、中間転写媒体60の受容層53とを対向させ、サーマルヘッド等の加熱部材により、熱転写シート10の背面側から、熱転写画像情報に応じたエネルギーを印加することにより行うことができる。
本工程は、図4(b)に示すように、熱転写画像が形成された受容層53を、保護層52とともに、被転写体100上に転写する工程である。本工程を経ることで、被転写体100上に熱転写画像が形成された受容層53を含む転写層50が設けられた印画物200を得る。被転写体100上への、熱転写画像が形成された受容層53を含む転写層50の転写は、被転写体100と、熱転写画像が形成された受容層53を有する中間転写媒体60とを重ね合わせ、中間転写媒体60の背面側から、サーマルヘッド、熱板、ホットスタンパー、熱ロール、ラインヒーター、アイロン等の従来公知の加熱手段によりエネルギーを印加することにより行うことができる。
基材として厚さ12μmのポリエチレンテレフタレートフィルム(ルミラー(登録商標) 東レ(株))を用い、該基材シート上に下記組成の剥離層用塗工液を乾燥後の厚みが1μmとなるように塗布・乾燥して剥離層を形成した。次いで、剥離層上に下記組成の保護層用塗工液を乾燥後の厚みが2μmとなるように塗布・乾燥して保護層を形成した。更に該保護層の上に下記組成の受容層用塗工液1を乾燥後の厚みが2μmとなるように塗布・乾燥して受容層を形成し、基材上に、剥離層、保護層、受容層がこの順で積層されてなる転写層が設けられた中間転写媒体1を得た。なお、上記の剥離層用塗工液、保護層用塗工液、受容層用塗工液は、全てグラビアコーターにて塗布した。
・アクリル樹脂 95部
(BR-87 三菱レイヨン(株))
・ポリエステル樹脂 5部
(バイロン(登録商標)200 東洋紡(株))
・トルエン 200部
・メチルエチルケトン 200部
・ポリエステル樹脂 20部
(バイロン(登録商標)200 東洋紡(株))
・トルエン 40部
・メチルエチルケトン 40部
・塩化ビニル-酢酸ビニル共重合体(Mn:12000、Tg:76℃)
19部
(ソルバイン(登録商標)CNL 日信化学工業(株))
・シリコーンオイル 4部
・メチルエチルケトン 20部
・トルエン 20部
受容層用塗工液1にかえて、下記組成の受容層用塗工液2を用いて受容層を形成した以外は、全て中間転写媒体(1)と同様にして、基材上に、剥離層、保護層、受容層がこの順で積層されてなる転写層が設けられた中間転写媒体(2)を作成した。
・塩化ビニル-酢酸ビニル共重合体(Mn:12000、Tg:76℃)
19部
(ソルバイン(登録商標)CNL 日信化学工業(株))
・シリコーンオイル 1部
(X22-3000T 信越化学工業(株))
・メチルエチルケトン 40部
・トルエン 40部
受容層用塗工液1にかえて、下記組成の受容層用塗工液3を用いて受容層を形成した以外は、全て中間転写媒体(1)と同様にして、基材上に、剥離層、保護層、受容層がこの順で積層されてなる転写層が設けられた中間転写媒体(3)を作成した。
・塩化ビニル-酢酸ビニル共重合体(Mn:12000、Tg:76℃)
19.6部
(ソルバイン(登録商標)CNL 日信化学工業(株))
・シリコーンオイル 0.4部
(X22-3000T 信越化学工業(株))
・メチルエチルケトン 40部
・トルエン 40部
受容層用塗工液1にかえて、下記組成の受容層用塗工液4を用いて受容層を形成した以外は、全て中間転写媒体(1)と同様にして、基材上に、剥離層、保護層、受容層がこの順で積層されてなる転写層が設けられた中間転写媒体(4)を作成した。
・塩化ビニル-酢酸ビニル共重合体(Mn:12000、Tg:76℃)
16部
(ソルバイン(登録商標)CNL 日信化学工業(株))
・シリコーンオイル 4部
(X22-3000T 信越化学工業(株))
・メチルエチルケトン 40部
・トルエン 40部
受容層用塗工液1にかえて、下記組成の受容層用塗工液5を用いて受容層を形成した以外は、全て中間転写媒体(1)と同様にして、基材上に、剥離層、保護層、受容層がこの順で積層されてなる転写層が設けられた中間転写媒体(5)を作成した。
・塩化ビニル-酢酸ビニル共重合体(Mn:31000、Tg:70℃)
19部
(ソルバイン(登録商標)C 日信化学工業(株))
・シリコーンオイル 1部
(X22-3000T 信越化学工業(株))
・メチルエチルケトン 40部
・トルエン 40部
受容層用塗工液1にかえて、下記組成の受容層用塗工液6を用いて受容層を形成した以外は、全て中間転写媒体(1)と同様にして、基材上に、剥離層、保護層、受容層がこの順で積層されてなる転写層が設けられた中間転写媒体(6)を作成した。
・塩化ビニル-酢酸ビニル共重合体(Mn:31000、Tg:70℃)
19.6部
(ソルバイン(登録商標)C 日信化学工業(株))
・シリコーンオイル 0.4部
(X22-3000T 信越化学工業(株))
・メチルエチルケトン 40部
・トルエン 40部
受容層用塗工液1にかえて、下記組成の受容層用塗工液7を用いて受容層を形成した以外は、全て中間転写媒体(1)と同様にして、基材上に、剥離層、保護層、受容層がこの順で積層されてなる転写層が設けられた中間転写媒体(7)を作成した。
・塩化ビニル-酢酸ビニル共重合体(Mn:42000、Tg:75℃)
19.6部
(ソルバイン(登録商標)CN 日信化学工業(株))
・シリコーンオイル 0.4部
(X22-3000T 信越化学工業(株))
・メチルエチルケトン 40部
・トルエン 40部
受容層用塗工液1にかえて、下記組成の受容層用塗工液8を用いて受容層を形成した以外は、全て中間転写媒体(1)と同様にして、基材上に、剥離層、保護層、受容層がこの順で積層されてなる転写層が設けられた中間転写媒体(8)を作成した。
・塩化ビニル-酢酸ビニル共重合体(Mn:12000、Tg:76℃)
20部
(ソルバイン(登録商標)CNL 日信化学工業(株))
・メチルエチルケトン 40部
・トルエン 40部
受容層用塗工液1にかえて、下記組成の受容層用塗工液9を用いて受容層を形成した以外は、全て中間転写媒体(1)と同様にして、基材上に、剥離層、保護層、受容層がこの順で積層されてなる転写層が設けられた中間転写媒体(9)を作成した。
・塩化ビニル-酢酸ビニル共重合体(Mn:31000、Tg:70℃)
19部
(ソルバイン(登録商標)C 日信化学工業(株))
・メチルエチルケトン 40部
・トルエン 40部
基材として厚さ4.5μmの易接着処理済みポリエチレンテレフタレートフィルムを用い、基材の一方の面に、下記組成の背面層用塗工液を乾燥後の厚みが0.8μmとなるように塗布・乾燥して背面層を形成した。次いで、基材の他方の面に、下記組成のプライマー層用塗工液1を乾燥後の厚みが0.2μmとなるように塗布・乾燥してプライマー層を形成し、このプライマー層上に、下記組成のイエロー色材層用塗工液1、マゼンタ色材層用塗工液1、シアン色材層用塗工液1をそれぞれ、乾燥後の厚みが0.6μmとなるように面順次に塗布・乾燥して熱転写シート(1)を得た。
・ポリビニルブチラール樹脂 2部
(エスレック(登録商標)BX-1 積水化学工業(株))
・ポリイソシアネート 9.2部
(バーノック(登録商標)D750 DIC(株))
・リン酸エステル系界面活性剤 1.3部
(プライサーフ(登録商標)A208N 第一工業製薬(株))
・タルク 0.3部
(ミクロエース(登録商標)P-3 日本タルク工業(株))
・トルエン 43.6部
・メチルエチルケトン 43.6部
・アルミナゾル(固形分10.5%) 50部(固形分5.25部)
(アルミナゾルAL-200 日産化学工業(株))
・水 25部
・イソプロピルアルコール 25部
・下式(1)で示されるイエロー染料 7部
・ポリビニルアセトアセタール樹脂 4部
(エスレック(登録商標)KS-5 積水化学工業(株))
・メチルエチルケトン 44.5部
・トルエン 44.5部
・下式(2)で示されるマゼンタ染料 3部
・マゼンタ染料(Disperse Violet26) 5部
・ポリビニルアセトアセタール樹脂 4部
(エスレック(登録商標)KS-5 積水化学工業(株))
・メチルエチルケトン 44部
・トルエン 44部
・シアン染料(Disperse Blue354) 2.5部
・下式(3)で示されるシアン色材 5部
・ポリビニルアセトアセタール樹脂 4部
(エスレック(登録商標)KS-5 積水化学工業(株))
・メチルエチルケトン 44.25部
・トルエン 44.25部
プライマー層用塗工液1にかえて、下記組成のプライマー層用塗工液2を用いてプライマー層を形成した以外は、全て熱転写シート(1)と同様にして、熱転写シート(2)を作成した。
・アルミナゾル(固形分10.5%) 50部(固形分5.25部)
(アルミナゾルAL-200 日産化学工業(株))
・ポリエステル樹脂(固形分25%) 10.5部(固形分2.7部)
(プラスコートZ-561 互応化学工業(株))
・水 32.25部
・イソプロピルアルコール 32.25部
プライマー層用塗工液1にかえて、下記組成のプライマー層用塗工液3を用いてプライマー層を形成した以外は、全て熱転写シート(1)と同様にして、熱転写シート(3)を作成した。
・コロイダルシリカ(固形分20.5%)
20.5部(固形分4.2025部)
(スノーテックスN 日産化学工業(株))
・ポリエステル樹脂(固形分25%) 4.2部(固形分1.05部)
(プラスコートZ-561 互応化学工業(株))
・水 37.65部
・イソプロピルアルコール 37.65部
プライマー層用塗工液1にかえて、下記組成のプライマー層用塗工液4を用いてプライマー層を形成した以外は、全て熱転写シート(1)と同様にして、熱転写シート(4)を作成した。
・ポリビニルアルコール樹脂 4.2部
(ゴーセノールGH-17 日本合成化学(株))
・ポリエステル樹脂(固形分25%) 4.2部(固形分1.05部)
(プラスコートZ-561 互応化学工業(株))
・水 45.8部
・イソプロピルアルコール 45.8部
プライマー層用塗工液1にかえて、下記組成のプライマー層用塗工液5を用いてプライマー層を形成した以外は、全て熱転写シート(1)と同様にして、熱転写シート(5)を作成した。
・ポリビニルアルコール樹脂 4.2部
(ゴーセノールGH-17 日本合成化学(株))
・水分散イソシアネート 1部
(WB40-100 旭化成ケミカルズ(株))
・水 47.4部
・イソプロピルアルコール 47.4部
プライマー層用塗工液1にかえて、下記組成のプライマー層用塗工液6を用いてプライマー層を形成した以外は、全て熱転写シート(1)と同様にして、熱転写シート(6)を作成した。
・ポリビニルピロリドン樹脂 5.2部
(PVP K-90 アイエスピージャパン(株))
・水 47.4部
・イソプロピルアルコール 47.4部
プライマー層用塗工液1にかえて、下記組成のプライマー層用塗工液7を用いてプライマー層を形成した以外は、全て熱転写シート(1)と同様にして、熱転写シート(7)を作成した。
・ウレタン樹脂(固形分25%) 21部(固形分5.25部)
(スーパーフレックス(登録商標)SF600 第一工業製薬(株))
・水 39.5部
・イソプロピルアルコール 39.5部
イエロー色材層用塗工液1、マゼンタ色材層用塗工液1、シアン色材層用塗工液1にかえて、下記組成のイエロー色材層用塗工液2、マゼンタ色材層用塗工液2、シアン色材層用塗工液2を用いてイエロー色材層、マゼンタ色材層、シアン色材層を形成した以外は、全て熱転写シート(1)と同様にして、熱転写シート(8)を作成した。
・上式(1)で示されるイエロー染料 7部
・ポリビニルアセトアセタール樹脂 3.4部
(エスレック(登録商標)KS-5 積水化学工業(株))
・エチルセルロース樹脂 0.6部
(エトセルSTD45 日進化成(株))
・メチルエチルケトン 44.5部
・トルエン 44.5部
・上式(2)で示されるマゼンタ染料 3部
・マゼンタ染料(Disperse Violet26) 5部
・ポリビニルアセトアセタール樹脂 3.4部
(エスレック(登録商標)KS-5 積水化学工業(株))
・エチルセルロース樹脂 0.6部
(エトセルSTD45 日進化成(株))
・メチルエチルケトン 44部
・トルエン 44部
・シアン染料(Disperse Blue354) 2.5部
・上式(3)で示されるシアン染料 5部
・ポリビニルアセトアセタール樹脂 3.4部
(エスレック(登録商標)KS-5 積水化学工業(株))
・エチルセルロース樹脂 0.6部
(エトセルSTD45 日進化成(株))
・メチルエチルケトン 44.25部
・トルエン 44.25部
イエロー色材層用塗工液1、マゼンタ色材層用塗工液1、シアン色材層用塗工液1にかえて、下記組成のイエロー色材層用塗工液3、マゼンタ色材層用塗工液3、シアン色材層用塗工液3を用いてイエロー色材層、マゼンタ色材層、シアン色材層を形成した以外は、全て熱転写シート(1)と同様にして、熱転写シート(9)を作成した。
・上式(1)で示されるイエロー染料 7部
・ポリビニルアセトアセタール樹脂 4部
(エスレック(登録商標)KS-5 積水化学工業(株))
・シリコーンオイル 0.06部
(X-22-3939 信越化学工業(株))
・メチルエチルケトン 44.5部
・トルエン 44.5部
・上式(2)で示されるマゼンタ染料 3部
・マゼンタ染料(Disperse Violet26) 5部
・ポリビニルアセトアセタール樹脂 4部
(エスレック(登録商標)KS-5 積水化学工業(株))
・シリコーンオイル 0.06部
(X-22-3939 信越化学工業(株))
・メチルエチルケトン 44部
・トルエン 44部
・シアン染料(Disperse Blue354) 2.5部
・上式(3)で示されるシアン染料 5部
・ポリビニルアセトアセタール樹脂 4部
(エスレック(登録商標)KS-5 積水化学工業(株))
・シリコーンオイル 0.06部
(X-22-3939 信越化学工業(株))
・メチルエチルケトン 44.25部
・トルエン 44.25部
プライマー層用塗工液1にかえて、下記組成のプライマー層用塗工液8を用いてプライマー層を形成した以外は、全て熱転写シート(1)と同様にして、熱転写シート(10)を作成した。
・ポリエステル樹脂(固形分34%) 15.4部(固形分5.236部)
(バイロナールMF-1200 東洋紡(株))
・水 42.3部
・イソプロピルアルコール 42.3部
プライマー層用塗工液1にかえて、上記組成のプライマー層用塗工液8を用いてプライマー層を形成し、イエロー色材層用塗工液1、マゼンタ色材層用塗工液1、シアン色材層用塗工液1にかえて、上記組成のイエロー色材層用塗工液2、マゼンタ色材層用塗工液2、シアン色材層用塗工液2を用いてイエロー色材層、マゼンタ色材層、シアン色材層を形成した以外は、全て熱転写シート(1)と同様にして、熱転写シート(11)を作成した。
プライマー層用塗工液1にかえて、上記組成のプライマー層用塗工液8を用いてプライマー層を形成し、イエロー色材層用塗工液1、マゼンタ色材層用塗工液1、シアン色材層用塗工液1にかえて、上記組成のイエロー色材層用塗工液3、マゼンタ色材層用塗工液3、シアン色材層用塗工液3を用いてイエロー色材層、マゼンタ色材層、シアン色材層を形成した以外は、全て熱転写シート(1)と同様にして、熱転写シート(12)を作成した。
上記で作成した熱転写シートと中間転写媒体とを、下表1に示すように組合せ、この組合せを各実施例、及び比較例とした。
上表1に示される熱転写シートと中間転写媒体とを組合せて用い、各中間転写媒体の受容層に、下記テストプリンターを用いて、ライン周期3msec./lineにて、黒ベタ濃度が1.8付近となる黒ベタ画像(イエロー画像、マゼンタ画像、シアン画像の重ね画像)を形成した。下表2に、黒ベタ濃度が1.8付近となった際の印画電圧を示す。なお、黒ベタ濃度が1.8付近となる際の印画電圧が低いほど、画像形成時において、中間転写媒体の受容層が受けるダメージを抑制することができる。
サーマルヘッド:KEE-57-12GAN2-STA(京セラ(株))
発熱体平均抵抗値:3303(Ω)
主走査方向印字密度:300(dpi)
副走査方向印字密度:300(dpi)
ライン周期:3.0(msec./line)
印字開始温度:35(℃)
パルスDuty比:85(%)
上記黒ベタ濃度が1.8付近となるように受容層上に黒ベタ画像を形成したときの、色材層(シアン色材層)の離型性を以下の評価基準に基づいて評価した。評価結果を表2に併せて示す。
A:色材層を剥離したときの剥離痕が目視で確認できない。
B:色材層を剥離したときの剥離痕が僅かに発生しているが目視で殆ど確認できない。
NG:色材層を剥離したときの剥離痕が目視で多く確認できる。
ポリ塩化ビニル製カード(PVCカード 大日本印刷(株))と、カード用ラミネーター(SIP社)とを用い、PVCカード上に、上記熱転写画像が形成された受容層を含む転写層(基材側から、剥離層、保護層、熱転写画像が形成された受容層がこの順で積層されてなる転写層)を、180℃、2sec./inchの条件にて転写し、PVCカード上に転写層が転写されてなる各実施例、及び比較例の印画物を形成した。
上記各実施例、及び比較例の印画物を形成するにあたり、PVCカード上へ転写層を転写するときの転写性を以下の評価基準に基づいて評価した。なお、転写不良部(%)とは、本来転写されるべき転写層を100%としたときに転写が行われなかった領域の割合である。評価結果を表2に併せて示す。
A:転写層が完全に転写している(転写不良部0%)。
B:カードの端部にのみ僅かに転写不良が生じている(転写不良部1%未満)。
C:転写不良が少し発生している(転写不良部1%以上25%未満)。
NG(1):転写不良が多く発生している(転写不良部25%以上50%未満)。
NG(2):転写不良が著しく発生している(転写不良部50%以上)。
上記で形成した各実施例、及び比較例の印画物を、ANSI-INCITS322-2002、5.9 Surface Abrasionに準拠するテーバー試験法により、テーバー試験機を用い、摩耗輪CS-10F、荷重500gf、60サイクル/minにて、250サイクル摩耗試験を実施した。摩耗試験後の印画物の状態を目視で確認し、以下の評価基準に基づいて印画物の耐久性を評価した。評価結果を表2に併せて示す。
A:画像に摩耗キズが全くない。
B:画像に摩耗キズが少し発生しているが目視で殆ど確認できない。
C:画像に目視で確認できる摩耗キズが発生しているが使用上問題ないレベルである。
NG(1):画像に目視で確認できる摩耗キズがかなり発生している。
NG(2):画像に摩耗キズが著しく発生している。
2 プライマー層
3 色材層
5、55 背面層
10 熱転写シート
51 他の基材
52 剥離層
53 受容層
50 転写層
60 中間転写媒体
100 被転写体
200 印画物
Claims (8)
- 熱転写シートと中間転写媒体の組合せであって、
前記熱転写シートが、基材の一方の面上に、プライマー層、色材層がこの順で積層され、当該プライマー層が、コロイド状無機粒子由来の粒子、ポリビニルアルコール系樹脂、ポリビニルピロリドン系樹脂、ポリウレタン系樹脂の群から選択される1種、又は2種以上を含有している熱転写シートであり、
前記中間転写媒体が、他の基材の一方の面上に、保護層、受容層がこの順で積層されてなる中間転写媒体であることを特徴とする、
熱転写シートと中間転写媒体の組合せ。 - 前記中間転写媒体の受容層が、数平均分子量(Mn)が6000以上35000以下の樹脂を含有していることを特徴とする、請求項1に記載の熱転写シートと中間転写媒体の組合せ。
- 前記中間転写媒体の受容層が、ガラス転移温度(Tg)が60℃以上100℃以下の樹脂を含有していることを特徴とする、請求項1又は2に記載の熱転写シートと中間転写媒体の組合せ。
- 前記中間転写媒体の受容層が、当該受容層の総質量に対し、離型剤を15質量%以下の範囲で含有していることを特徴とする、請求項1乃至3の何れか1項に記載の熱転写シートと中間転写媒体の組合せ。
- 印画物の形成方法であって、
基材の一方の面上に、プライマー層、色材層がこの順で積層されてなる熱転写シートと、他の基材の一方の面上に、保護層、受容層がこの順で積層されてなる中間転写媒体と、被転写体とを準備する工程と、
前記中間転写媒体の前記受容層上に、前記熱転写シートの前記色材層が含有している色材を移行させ、当該受容層上に熱転写画像を形成する熱転写画像形成工程と、
前記熱転写画像が形成された受容層を、前記保護層とともに、被転写体上に転写する印画物形成工程を含み、
前記熱転写画像の形成に用いられる前記熱転写シートの前記プライマー層が、コロイド状無機粒子由来の粒子、ポリビニルアルコール系樹脂、ポリビニルピロリドン系樹脂、ポリウレタン系樹脂の群から選択される1種、又は2種以上を含有していることを特徴とする、
印画物の形成方法。 - 前記中間転写媒体の受容層が、数平均分子量(Mn)が6000以上35000以下の樹脂を含有していることを特徴とする、請求項5に記載の印画物の形成方法。
- 前記中間転写媒体の受容層が、ガラス転移温度(Tg)が60℃以上100℃以下の樹脂を含有していることを特徴とする、請求項5又は6に記載の印画物の形成方法。
- 前記中間転写媒体の受容層が、当該受容層の総質量に対し、離型剤を15質量%以下の範囲で含有していることを特徴とする、請求項5乃至7の何れか1項に記載の印画物の形成方法。
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