EP0300505B1 - Farbstoffempfangsschicht für thermischen Farbstoffübertragungsdruck - Google Patents

Farbstoffempfangsschicht für thermischen Farbstoffübertragungsdruck Download PDF

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Publication number
EP0300505B1
EP0300505B1 EP88111947A EP88111947A EP0300505B1 EP 0300505 B1 EP0300505 B1 EP 0300505B1 EP 88111947 A EP88111947 A EP 88111947A EP 88111947 A EP88111947 A EP 88111947A EP 0300505 B1 EP0300505 B1 EP 0300505B1
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EP
European Patent Office
Prior art keywords
image
intermediate layer
thermal transfer
transfer printing
sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88111947A
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English (en)
French (fr)
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EP0300505A2 (de
EP0300505A3 (en
Inventor
Hiromasa Kondo
Yoshitaka Okumura
Terunobu Fukui
Noritaka Egashira
Tamami Iwata
Naoto Satake
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
New Oji Paper Co Ltd
Original Assignee
Kanzaki Paper Manufacturing Co Ltd
Dai Nippon Printing Co Ltd
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Filing date
Publication date
Priority claimed from JP62186096A external-priority patent/JPH0832487B2/ja
Priority claimed from JP62186095A external-priority patent/JPH0825339B2/ja
Priority claimed from JP62259968A external-priority patent/JPH0635212B2/ja
Priority claimed from JP63115065A external-priority patent/JP2575177B2/ja
Application filed by Kanzaki Paper Manufacturing Co Ltd, Dai Nippon Printing Co Ltd filed Critical Kanzaki Paper Manufacturing Co Ltd
Priority to EP93100728A priority Critical patent/EP0545893B1/de
Publication of EP0300505A2 publication Critical patent/EP0300505A2/de
Publication of EP0300505A3 publication Critical patent/EP0300505A3/en
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Publication of EP0300505B1 publication Critical patent/EP0300505B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
    • B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
    • B41M5/42—Intermediate, backcoat, or covering layers
    • B41M5/44—Intermediate, backcoat, or covering layers characterised by the macromolecular compounds
    • 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
    • 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
    • B41M2205/02—Dye diffusion thermal transfer printing (D2T2)
    • 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
    • B41M2205/06—Printing methods or features related to printing methods; Location or type of the layers relating to melt (thermal) mass transfer
    • 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
    • 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
    • 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

  • This invention relates to an improvement in image-receiving sheets for thermal transfer printing which are adapted for printing images thereon by transfer of a sublimable dye of a thermal transfer sheet by application of heat from a thermal head in accordance with image signals.
  • Thermal printing systems in which printed images are obtained upon reception of input signals are made up of a relatively simple apparatus and are inexpensive and low in noises, so that they have increasing utility in various fields such as facsimiles, terminal printers for electronic computers, printers for measuring instruments, video printers, and the like.
  • a recording medium generally used in these thermal printing systems is a so-called color-developing heat-sensitive recording paper having a recording layer which undergoes a physical or chemical change by application of heat to form a color.
  • the recording paper of the color developing type has disadvantages in that it is liable to undesirably develop the color during the process of fabrication or during storage.
  • the image printed on the paper is poor in storage stability and is apt to fade on contact with organic solvents or chemicals.
  • a thermal transfer printing system in which a recording medium utilizing a dye or colorant is used instead of the color-developing thermosensitive recording paper.
  • a colorant or colored dye is caused to melt, evaporate or sublimate by application of heat and transferred on a recording paper, thereby forming a record image by adhesion, adsorption or reception of the dye on the recording paper.
  • a mechanism as is shown in Fig. 2.
  • a thermal transfer sheet 201 having a dye layer on a substrate and a thermal transfer image-receiving sheet 203 set on a platen roller 202 are superposed and heated from the non-faced side of the thermal transfer sheet 201 by a heating means 204 such as a thermal head.
  • the thermal head 204 is controlled with electric signals corresponding to image information.
  • the dye of the thermal transfer sheet is transferred on an image-receiving layer.
  • a thermal transfer sheet used is a sheet which has been coated or printed, as shown in Fig. 3, a start mark 301 and dyes including yellow 302, magenta 303 and cyan 304, and also including a black dye, if necessary.
  • This sheet is superposed on a thermal transfer image-receiving sheet and the yellow, magenta and cyan dyes are successively heated according to the respective color-separated image signals to make an image in which the three colors are superposed.
  • a natural color, photographic image is formed.
  • a known thermal transfer image-receiving sheet used in this type of printing system is one which has an image-receiving layer obtained by coating onto a paper substrate such as high-quality paper a coating of a dispersion of finely powdered silica or calcium carbonate in a binder such as a thermoplastic polyester resin.
  • the image-receiving layer is formed on the substrate, such as wood free paper, whose smoothness is low, it is difficult to obtain a satisfactory printed image.
  • the substrate such as wood free paper
  • missing transfer portions are liable to occur at half-tone to low-tone portions.
  • images such as of symbols, letters and figures are substantially solid and thus the missing transfer portions are not conspicuous, missing transfer portions on photographs or colored solid images will undesirably tend to become marked and produce vital deficiencies. Accordingly, there is a strong demand for eliminating such deficiencies.
  • the method (1) has a problem that the productivity lowers because it comprises the step in which the intermediate layer which has been kept as softened or plastic is brought into close contact with mirror-like finished chromium plated metal drum for heating and drying.
  • the method (2) involves the problem that a soft resin such as MBR, polyurethane, polybutadiene, SBR or the like, which has been formulated so as to improve the adhesiveness, is liable to block when wound up after coating and drying. Additionally, the resin dissolves in an organic solvent of the coating solution forming an image-receiving layer, so that the image-receiving layer cannot be formed uniformly, thus causing a lowering of an optical density of the printed image.
  • a soft resin such as MBR, polyurethane, polybutadiene, SBR or the like
  • An object of the invention is to provide an improved image-receiving sheet for thermal transfer printing which is free from the foregoing problems which are found on the known image-receiving sheet and which enables one to form beautiful printing images of high optical density without involving the known problem relating to a missing transfer portion.
  • Another object of the invention is to provide an improved image-receiving sheet capable of forming images of high quality having good gradation and which is free from the known problem relating to a missing transfer portion even upon using as a base sheet various paper sheets made primarily of pulp fibers.
  • the present inventors have made intensive studies in order to achieve the above objects and, as a result, found that when a base sheet is first formed with an intermediate layer made primarily of a resin insoluble in organic solvents and then with an image-receiving layer made chiefly of a resin soluble in organic solvents, the smoothness and the anti-blocking properties are significantly improved. And this results in making printed images beautiful without causing any missing transfer portion and making the printed images to have an excellent optical density.
  • the present invention has been accomplished based on the above findings.
  • the present invention contemplates to provide an image-receiving sheet for thermal transfer printing which is characterized by comprising a substrate, an intermediate layer formed on the substrate and containing a resin insoluble in organic solvent, and an image-receiving layer formed on the intermediate layer and containing as a primary component a resin soluble in organic solvent.
  • Fig. 1 is a schematic sectional view showing an image-receiving sheet for thermal transfer printing according to the invention.
  • 101 denotes a substrate
  • 102 denotes an intermediate layer
  • 103 denotes an image-receiving layer.
  • the intermediate layer of the image-receiving sheet of the invention contains as its primary component resins which are insoluble in organic solvents. It has been found that when a copolymer latex having a specific type of monomer composition and a certain gel content (content of toluene-insoluble component) is used as the organic solvent-insoluble resin, the organic solvent resistance and blocking properties of the intermediate layer are effectively improved without impeding the smoothness of the image-receiving layer. This results in efficient production of an image-receiving sheet capable of yielding printing images which are free from missing transfer portions, high in optical density and beautiful.
  • the monomer composition and gel content of the copolyer latex are shown below.
  • the unsaturated acid monomer (B) includes, for example, acrylic acid, methacrylic acid, maleic acid, fumaric acid, itaconic acid, dicarboxylic acid anhydrides, dicarboxylic acid monoalkyl esters, and the like.
  • the unsaturated acid monomer is contained in an amount of from 0.5 to 15 wt% of the copolymer latex. If the content is less than 0.5 wt%, the mechanical stability of the copolymer latex lowers, whereas over 15 wt%, the latex tends to undesirably become too viscous.
  • the olefinic monomer (C) other than the aliphatic conjugated diolefinic monomer (A) and the unsaturated acid monomer (B) includes, for example, aromatic vinyl monomers such as styrene, alpha-methylstyrene, dimethylstyrene vinyl toluene and the like, acrylates monomers such as methyl acrylate, ethyl acrylate, butyl acrylate, 2-ethylhexyl acrylate, lauryl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate and the like, methacrylate monomers such as methyl methacrylate, ethyl methacrylate, 2-hydroxyethyl methacrylate 2-hydroxypropyl methacrylate and the like, unsaturated nitrile monomers such as acrylonitrile, methacrylonitrile and the like, and acrylamide, N-methylolacrylamide, glycidyl acrylate
  • the gel content of the copolymer latex should be controlled in a range of from 85 to 100 wt%.
  • the gel content may be influenced depending upon the monomer composition, the yield of emulsion polymerization, the polymerization temperature and the like, it should be controlled over 85 wt% by controlling an amount of a chain transfer agent such as carbon tetrachloride, dodecyl mercaptan, octyl mercaptan or the like or by appropriately using a crosslinking agent such as methylenebisacrylamide, divinylbenzene, diallyl phthalate or the like.
  • a chain transfer agent such as carbon tetrachloride, dodecyl mercaptan, octyl mercaptan or the like
  • a crosslinking agent such as methylenebisacrylamide, divinylbenzene, diallyl phthalate or the like.
  • the gel content used herein is a value determined according to the following procedure.
  • a latex is allowed to stand on a glass plate at room temperature (in a air-dried condition) over 24 hours, after which it is dried in vacuum for 2 to 3 hours to obtain an about 1 mm thick latex film.
  • About 0.5 g of the thus obtained film is accurately weighed and immersed in 50 ml of toluene at room temperature for 24 hours.
  • the toluene solution is passed through a 200 mesh stainless steel screen to collect an insoluble matter, followed by drying it at 135°C for 3 hours and measuring the weight. Then, the ratio (wt%) to the weight prior to the immersion in the toluene solution is calculated as the gel content.
  • the above specific type of copolymer latex should preferably be contained in the intermediate layer in an amount of not less than 60 wt%, more preferably not less than 70 wt%, of the total solid of the intermediate layer in order to obtain a desired high optical density for images as printed.
  • the intermediate layer may further contain various additives including pigments such as silica, alumina, clay, calcium carbonate and plastic pigments, lubricants, fluorescent dyes, and other adhesives in amounts not impeding the effects of a resin insoluble in organic solvents.
  • pigments such as silica, alumina, clay, calcium carbonate and plastic pigments, lubricants, fluorescent dyes, and other adhesives in amounts not impeding the effects of a resin insoluble in organic solvents.
  • Solvent-resistant organic pigment fine particles include, for example, those of polyolefin resins, phenolic resins, urea resins, melamine resins, allyl resins, epoxy resins, polyimide resins, benzoguanamide resins, and the like.
  • the resins other than the polyolefin resins are all thermosetting resins and thus lower the cushioning properties of the intermediate layer. Accordingly, studies have been made on fine particles of various polyolefin resins. As a result, it has been found that certain types of polyolefin resin fine particles can significantly improve the anti-blocking properties and eliminate the known problems relating to occurrence of missing transfer portions but they lower the optical density for images as printed.
  • the fine particles of a certain type of polyolefin resin should preferably have a melting point not lower than 70°C, more preferably not lower than 100°C, and a heat absorption, accompanied by softening and phase transfer at the time of heating, of not larger than 50 cal/g. If the melting point is lower than 70°C, the fine particles melt during drying a coating for the intermediate layer, so that they bond together by fusion or impregnate into a substrate. Thus, the resultant intermediate layer lowers in smoothness. When the heat absorption exceeds 50 cal/g, heat from a thermal head is consumed in the form of latent heat, leading to a lowering of the transfer density.
  • the fine particles of the polyolefin resins includes those of polyethylene, polypropylene, polybutene-1, polyisobutene, polypentene-1, polyhexene-1, poly-3-methylbutene-1, poly-methylpentene-1, poly-5-methylhexene-1, and copolymers of these olefins.
  • fine particles of the above polyolefin resin having defined ranges of a melting point and an heat absorption are used with an organic solvent-insoluble resin in the intermediate layer.
  • polyethylene, polypropylene and copolymers of ethylene and propylene are used as the polyolefin resin in the form of fine particles.
  • the melting point used herein means a temperature at which an endothermic peak appears when measured by differential thermal analysis.
  • the heat absorption accompanied by softening or phase transfer means an absorption of heat in the vicinity of the melting point measured by the differential thermal analysis.
  • the particle size of the fine particles of polyolefin resins is smaller than 0.1 micrometer, satisfactorily high smoothness cannot be obtained. Over 20 micrometers, the smoothness also lowers. In view of this, the particle size is preferably in the range from 0.1 to 20 micrometers.
  • Desired effects are obtained when the fine particles are contained in an amount of not less then 10 wt%, preferably from 60 to 90 wt%, as the total solid content in the intermediate layer.
  • the content is less than 10 wt%, satisfactory effects of reducing the blocking tendency and improving the smoothness cannot be expected.
  • the strength of the intermediate layer lowers, with the fear that the intermediate layer may separate from a substrate during printing or a coating for the image-receiving layer may impregnate in the intermediate layer or the substrate when coated, disenabling a satisfactory image-receiving layer to be formed.
  • binder for the fine particfles of polyolefin resins such a specific type of copolymer latex as set forth before can be used with very good results.
  • resins ordinarily used as a binder or adhesive e.g. SBR, polyurethane, polybutadiene, MBR, vinyl acetate-ethylene copolymers, may be used as they are.
  • the present inventors have intensively made further studies on the organic solvent-resistant resins. As a result, it has been found that when hollow particles are contained in the resin, the heat-insulating properties of the intermediate layer can be remarkably improved together with an attendant remarkable improvement in the optical density for images as printed.
  • the hollow particfles useful for this purpose are, for example, those described below.
  • thermoplastic materials such as vinylidene chloride-acrylonitrile copolymers
  • a volatile expanding agent such as propane, n-butane, iso-butane or the like
  • Matsumoto Microsphere F-30 made by Matsumoto Yushi-Seiyaku Co., Ltd.
  • Expancel 551, 642 made by KemaNobel Company
  • Hard resins such as acryl-styrene copolymers are used as a shell in which water is contained and is flown away upon drying to form hollow polymer particles.
  • Ropaque OP-84J made by Rohm & Haas Japan Kabushiki Kaisha.
  • the above hollow particles have generally a size of from 0.1 to 200 micrometers. Preferably, those hollow particles having a size of from 0.1 to 20 micrometers are used.
  • the size is less than 0.1 micrometer, satisfactory heat-insulating effects cannot be expected. Over 20 micrometers, the smoothness of the image-receiving layer lowers. In this connection, however, the hollow particles obtained by thermal expansion of thermally expandable plastic materials have the cushioninig action and are flexible, so that they are usable when the size is not larger than 100 micrometers.
  • the above-mentioned hollow particles are all soluble in organic solvents such as methyl ethyl ketone and should be used after dispersion in an organic solvent-resistant resin used as an binder.
  • the intermediate layer may be formed of a layer of the hollow particles and a protective layer of an organic solvent-resistant resin formed on the hollow particle layer.
  • Preferable organic solvent-resistant resins are copolymer latices having specific monomer composition and gel content. Aside from the latices, resins having good film-forming properties and capable of inhibiting organic solvents from infiltrating may be used including, for example, hydrophilic polymers such as polyvinyl alcohol, casein, starch and the like, acrylic esters, ethylene-vinyl acetate copolymers, carboxyl group-containing polyethylene, and the like. Of these, the copolymer latices and the hydrophilic polymers including polyvinyl alcohol, casein, starch and the like are preferred because of good synergistic effects with the hollow particles. The hollow particles are favorably used in an amount of not less than 50 wt% of the total solids in the intermediate layer.
  • the thickness of the intermediate layer may be appropriately controlled depending upon the type of organic solvent-resistant resin and is generally in the range of from 10 to 50 micrometers, preferably from 15 to 30 micrometers.
  • dry coating of the intermediate layer is in the range of from 1 to 10 g/m2 and preferably, from 2 to 6 g/m2.
  • the thickness is in the range of from 5 to 50 micrometers, preferably from 10 to 30 micrometers.
  • the intermediate layer may further comprise microcapsules which contain a core substance having the plasticizing action on an image-receiving layer made primarily of a resin soluble in organic solvent, e.g. esters such as phosphoric esters, (tere)phthalic esters, adipic esters and the like, polyesters in the form of oligomers of dibasic acids and glycols or glycerine, epoxy fatty acid esters, and the like.
  • the resultant thermal transfer image-receiving sheet is improved in the receptivity of sublimable dyes without involving any missing transfer portion and has a high optical density for images as printed.
  • the wall of the capsule used above should permit thermal transmission of the core substance through the capsule wall when heated at the time of printing.
  • the capsule wall is desired to be made of polyurethane or polyurea.
  • the substrate 101 there may be used, for example, a synthetic paper, a wood free paper, a No.1 grade coated paper, a coated paper, a cast coated paper, polymer films, and composite sheets of these papers and films.
  • the smoothness of paper sheet is measured by means of a measuring instrument such as a specular reflection smoothness tester, a Bekk smoothness tester, a Parker Print Surf or the like.
  • a measuring instrument such as a specular reflection smoothness tester, a Bekk smoothness tester, a Parker Print Surf or the like.
  • the measurement with an air leakage-type Bekk smoothness tester or Parker Print-Surf is greatly influenced by air permeability of the substrate sheet. It has been found difficult to establish a correct interrelation between a measurement and an actual smoothness for various substrate sheets whose properties greatly differ from one another.
  • the smoothness of a paper substrate sheet used in the practice of the invention should be determined using a specular reflection smoothness tester.
  • a paper substrate sheet having not less than 6%, preferably not less than 7% when measured at a pressure of 20 kg/cm2 (a greater value leading to a better smoothness) is suitably used, an intermediate layer having desired characteristics can be very efficiently formed.
  • the paper-base substrates are not critical with respect to the type provided that the above requirements on the surface are satisfied.
  • Examples of paper substrates include gloss, dull and mat-type coated papers such as No.1 grade coated papers, coated papers, lightweight coated papers, finely coated papers, cast coated papers and the like, and non-coated papers such as wood free papers, medium papers, super calendered papers and the like.
  • Image-receiving Layer 103
  • the image-receiving layer of the image-receiving sheet for thermal transfer printing according to the invention is formed primarily of resins soluble in organic solvents. Examples of the organic solvent-soluble resins are mentioned below.
  • polyester resins and vinylchloride-(meth)acrylic ester copolymers are preferred because of their good transferability in dye stuffs and of their light fastness of transferred dye stuffs.
  • additives may be added to the image-receiving layer, if necessary.
  • additives include mineral pigments such as, for example, titanium dioxide, zinc oxide, aluminium hydroxide, calcium carbonate, finely powdered silica and the like and organic white pigments such as plastic pigments in order to improve whiteness and thermal fusion properties, modified silicon resins, solid waxes, polyethylene waxes, amide waxes, calcium silicate, and the like.
  • UV absorbers and light stabilizers may be added in amounts not impeding the effects of the invention.
  • the coating for the image-receiving layer is applied onto a substrate in a dry thickness of from 1 to 15 micrometers, preferably from 2 to 10 micrometers by any known coating apparatus such as, for example, a bar coater, a gravure coater or the like, and dried.
  • a paper stock comprised of 30 parts of bleached NKP and 70 parts of bleached LKP to which 0.4 parts of a rosin size, 10 parts of talc and 2.3 parts of aluminium sulfate were added was prepared and subjected to paper making by means of a Fourdrinier paper machine at a rate of 600 m/minute in such a way that a dry weight was 101 g/m2, followed by coating a oxidized starch solution having a concentration of 6% by the use of a size press in an amount of 50 ml/m2, drying and winding-up.
  • the resultant base paper was subjected to supercalendering under the following conditions.
  • the base paper After the super calendering, the base paper had a Cobb water absorption (5 second value) of 10.4 g/m2 and a smoothness of 13% as determined by the specular reflection smoothness tester at a pressure of 20 kg/cm2.
  • An intermediate layer was formed on the surface of the base paper in the following manner.
  • a coating to form the intermediate layer was prepared by adding 10 parts of precipitated calcium carbonate (commercial name: Brilliant S-15, made by Shiraishi Calcium Kaisha, Ltd.) to 90 parts of modified styrene butadienemethyl methacrylate copolymer latex (commercial name: JSR-0530, made by Japan Synthetic Rubber Co., Ltd.) while agitating in a mixer, to which water was added in order to make a concentration of 50%. Subsequently, 3 parts (solid content) of oxidized starch and 1 part of calcium stearate (commercial name: Nopcote C-104, made by SAN NOPCO Co., Ltd.) were added to the dispersion, to which water was added so as to make a solid content of 47%. The resultant coating was applied onto the base paper surface by means of a wire bar in a dry thickness of 25 micrometers and dried to form an intermediate layer.
  • precipitated calcium carbonate commercial name: Brilliant S-15, made by Shiraishi Calcium Kaisha, Ltd.
  • a coating for an image-receiving layer was prepared as follows.
  • the coating was applied onto the surface of the intermediate layer in a dry thickness of 7 micrometers by means of a wire bar and dried, followed by pressing under the following supercalendering conditions to obtain an image-receiving sheet for thermal transfer printing.
  • Super calendering conditions linear pressure 90 kg/cm surface temperature of a chrominum-plated metal roll 70°C running paper speed 5 m/minute number of nips for running paper 2
  • thermo transfer sheet was made in the following manner.
  • a sublimable disperse dye commercial name: Kayaset Blue 714, made by Nippon Kayaku Co., Ltd.
  • 60 parts by weight of polyvinyl butyral were added to methyl ethyl ketone/toluene (ratio by weight of 1:1) while agitating in a mixer to obtain an ink composition for formation of a thermal transfer layer having a solid content of 10%.
  • the composition was applied onto a 4.5 micrometer thick PET film, whose back side had been subjected to heat-resisting treatment, in a dry weight of 1 g/m2 by means of a wire bar and dried to obtain a thermal transfer sheet.
  • thermal transfer sheet was superposed on the image-receiving sheet for thermal transfer printing, followed by printing under conditions of an output power of 1 W/dot, a pulse width of 0.3 to 4.5 msec., and a dot density of 3 dots/mm for evaluation.
  • the results are shown in Table 1.
  • a base paper sheet obtained in the same manner as in Example 1 was applied with a coating prepared in the following manner.
  • the thus obtained coating was applied onto the base paper obtained in the same manner as in Example 1 in a dry thickness of 25 micrometers and dried.
  • the coated paper was pressed under the following supercalendering conditions.
  • Super calendering conditions linear pressure 60 kg/cm surface temperature of a chrominum-plated metal roll 25°C running paper speed 5 m/minute number of nips for running paper 2
  • the coated paper obtained after the super calendering treatment had a Cobb water absorption (5 second value) of 12.3 g/m2 and a smoothness (under a pressure of 20 kg/cm2) of 16% when determined by a specular reflection smoothness tester.
  • Example 1 Subsequently, the procedures of Example 1 were repeated with respect to the intermediate layer formation and subsequent procedures to make an image-receiving sheet for thermal transfer printing. Thereafter, the sheet was evaluated in the same manner as in Example 1. The results are shown in Table 1.
  • 0.2 parts of a rosin size, 10 parts of talc and 0.7 parts of aluminum sulfate were added to a pulp mixture of 60 parts of bleached NKP and 40 parts of bleached LKP to obtain a paper stock, followed by subjecting to paper making with a paper making machine and drying to obtain a base paper having a basis weight of 101 g/m2.
  • the base paper was applied with a 2% oxidized starch solution in an amount of 10 ml/m2 by the use of a size press, dried and supercalendered under the following conditions.
  • Super calendering conditions linear pressure 100 kg/cm surface temperature of a chrominum-plated metal roll 70°C running paper speed 5 m/minute number of nips for running paper 4
  • the base paper had a Cobb water absorption (5 second value) of 41.2 ml/m2 and a smoothness (under a pressure of 20 kg/cm2) of 23% when determined by the specular reflection smoothness tester.
  • Example 1 Subsequently, the procedures of Example 1 were repeated with respect to the intermediate layer formation and subsequent procedures to make a sheet to be thermally transferred. The sheet was evaluated in the same manner as in Example 1. The results are shown in Table 1.
  • a base paper obtained in the same manner as in Example 1 was applied with a coating prepared in the following manner.
  • ground calcium carbonate commercial name: BF-100, Bihoku Funka Kogyo Kabushiki Kaisha
  • ground calcium carbonate commercial name: Sofuton 1800, made by Bihoku Funka Kogyo Kabushiki Kaisha
  • sodium polyacrylate sodium polyacrylate
  • the coated paper had a Cobb water absorption (5 second value) of 11.5 g/m2 and a smoothness (under a pressure of 20 kg/cm2) of 5% when determined by a specular reflection smoothness tester.
  • Example 1 Thereafter, the procedures of Example 1 were repeated with respect to the subsequent procedures including the formation of the intermediate layer to obtain an image-receiving sheet for thermal transfer printing, followed by evaluation in the same manner as in Example 1. The results are shown in Table 1.
  • a base paper obtained in the same manner as in Example 1 was applied with a coating prepared in the following manner.
  • kalolin commercial name: Ultra White 90, made by EMC
  • 40 parts of precipitated calcium carbonate commercial name: Brilliant S-15, made by Shiraishi Calcium Kaisha, Ltd.
  • a pigment slurry having a solid content of 58%.
  • To the slurry were added 10 parts (solid content) of casein, 16 parts (as solid) of a modified styrene-butadiene copolymer latex (commercial name: JSR-0696, made by Japan Synthetic Rubber Co., Ltd.) and 3% (as solid) of zinc sulfate heptahydrate, followed by further addition of water to make a coating having a solid content of 50%.
  • the thus obtained coating was applied onto the base paper obtained in the same manner as in Example 1 in a dry thickness of 25 micrometers and dried.
  • the coated paper was rewet-casted under the following conditions. Rewet-casting conditions: drum temperature 105°C running pressure 100 kg/cm rewetting solution aqueous solution of 0.5% polyethylene emulsion
  • the coated paper obtained after the re-wet casting had a Cobb water absorption (5 second value) of 15.1 g/m and a smoothness (under a pressure of 20 kg/cm2) of 85% when determined by a specular reflection smoothness tester.
  • Example 1 The procedures of Example 1 were subsequently repeated with respect to the intermediate layer formation and subsequent procedures to make an image-receiving sheet for thermal transfer printing. Thereafter, the sheet was evaluated in the same manner as in Example 1. The results are shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 2.
  • the resultant coating was applied onto the substrate sheet obtained above in a dry thickness of 25 micrometers by means of a wire bar and dried to form an intermediate layer.
  • Example 1 Subsequently, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedures to obtain an image-receiving sheet for thermal transfer printing, followed by evaluation in the same manner as in Example 1. The results are shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 2.
  • the resultant coating was applied onto the substrate sheet obtained above in a dry thickness of 25 micrometers by means of a wire bar and dried to form an intermediate layer.
  • Example 1 Subsequently, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedures to obtain an image-receiving sheet for thermal transfer printing, followed by evaluation in the same manner as in Example 1. The results are shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 2.
  • the resultant coating was applied onto the substrate sheet obtained above in a dry thickness of 25 micrometers by means of a wire bar and dried to form an intermediate layer.
  • Example 1 Subsequently, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedures to obtain an image-receiving sheet for thermal transfer printing, followed by evaluation in the same manner as in Example 1. The results are shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 2.
  • the resultant coating was applied onto the substrate sheet obtained above in a dry thickness of 25 micrometers by means of a wire bar and dried to form an intermediate layer.
  • Example 1 Subsequently, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedures to obtain an image-receiving sheet for thermal transfer printing, followed by evaluation in the same manner as in Example 1. The results are shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 2.
  • the resultant coating was applied onto the substrate sheet obtained above in a dry thickness of 25 micrometers by means of a wire bar and dried to form an intermediate layer.
  • Example 1 Subsequently, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedures to obtain an image-receiving sheet for thermal transfer printing, followed by evaluation in the same manner as in Example 1. The results are shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 2.
  • the resultant coating was applied onto the substrate sheet obtained above in a dry thickness of 25 micrometers by means of a wire bar and dried to form an intermediate layer.
  • Example 1 Subsequently, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedures to obtain an image-receiving sheet for thermal transfer printing, followed by evaluation in the same manner as in Example 1. The results are shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 2.
  • the resultant coating was applied onto the substrate sheet obtained above in a dry thickness of 25 micrometers by means of a wire bar and dried to form an intermediate layer.
  • Example 1 Subsequently, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedures to obtain an image-receiving sheet for thermal transfer printing, followed by evaluation in the same manner as in Example 1. The results are shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 2.
  • the resultant coating was applied onto the substrate sheet obtained above in a dry thickness of 25 micrometers by means of a wire bar and dried to form an intermediate layer.
  • Example 1 Subsequently, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedures to obtain an image-receiving sheet for thermal transfer printing, followed by evaluation in the same manner as in Example 1. The results are shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 2.
  • thermally expandable hollow particles (commercial name: Matsumoto Microsphere F-30, made by Matsumoto Yushi-Seiyaku Co., Ltd.) whose shell walls have a softening temperature of from 80 to 85°C and 30 parts of a modified styrene-butadiene latex (commercial name: JSR-0696, made by Japan Synthetic Rubber Co., Ltd.) were agitated with a mixer, to which water was added so as to make a 45% coating.
  • thermally expandable hollow particles commercial name: Matsumoto Microsphere F-30, made by Matsumoto Yushi-Seiyaku Co., Ltd.
  • JSR-0696 modified styrene-butadiene latex
  • the resultant coating was applied onto the surface of the substrate sheet obtained above by means of a wire bar in a dry weight of 3.5 g/m2 and dried at 120°C for 1 minute. After the drying, the thermally expandable hollow particles were individually expanded to 30 to 70 times larger.
  • a coating of polyvinyl alcohol (commercial name: PVA-110, made by Kuraray Co., Ltd.) was formed by the use of a wire bar in a dry weight of 3.5 g/m2 as an upper layer of an intermediate layer and dried to form the intermediate layer.
  • Example 1 Subsequently, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedures to obtain an image-receiving sheet for thermal transfer printing, followed by evaluation in the same manner as in Example 1. The results are shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 1.
  • thermally expandable hollow particles commercial name: Matsumoto Microsphere F-30, made by Matsumoto Yushi-Seiyaku Co., Ltd.
  • polyvinyl alcohol commercial name: PVA-110, made by Kuraray Co., Ltd.
  • the results coating was applied onto the surface of the substrate sheet obtained above in a dry weight of 3.5 g/m2 by means of a wire bar, and dried at 120°C for 1 minute.
  • Example 1 Thereafter, the procedures of Example 1 was repeated with respect to the image-receiving layer formation and subsequent procedures to make an image-receiving sheet for thermal transfer printing.
  • the sheet was evaluated in the same manner as in Example 1. The results are shown in Table 1.
  • Example 15 The procedures of Example 15 were repeated to thereby make an image-receiving sheet for thermal transfer printing, followed by super calendering under the following conditions.
  • Super calendering conditions linear pressure 90 kg/cm surface temperature of a chromium-plated metal roll 70°C running paper speed 5 m/minute number of nips for running paper 2
  • the thickness of the image-receiving sheet was reduced from 165 micrometers to 110 micrometers. Subsequently, the sheet was evaluated in the same manner as in Example 1 with the results shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 1.
  • the resultant coating was applied onto the substrate sheet obtained above by means of a wire bar in a dry thickness of 20 micrometers and dried.
  • polyvinyl alcohol (commercial name: PVA-110, made by Kuraray Co., Ltd.) was applied by means of a wire bar in a dry weight of 3.5 g/m2 and dried to form the intermediate layer.
  • Example 1 Thereafter, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedures to obtain an image-receiving sheet for thermal transfer printing, followed by evaluation in the same manner as in Example 1. The results are shown in Table 1.
  • An intermediate layer was formed in the following manner on the surface of a substrate sheet obtained in the same manner as in Example 2.
  • the resulting coating was applied onto the surface of the substrate sheet obtained above by means of a wire bar in a dry thickness of 25 micrometers, and dried.
  • Example 1 Thereafter, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedure to obtain an image-receiving sheet for thermal transfer printing.
  • This sheet was found to have fine wrinkles on the surface thereof, and the solvent for the image-receiving layer infiltrated spottedly into the substrate, causing strinking-through. It was clear that the intermediate layer was swollen or dissolved with the organic solvent for the image-receiving layer.
  • An intermediate layer was formed in the same manner as in Comparative Example 1 on the surface of a substrate sheet obtained in the same manner as in Example 5.
  • Example 1 Thereafter, the procedures of Example 1 were repeated with respect to the image-receiving layer formation and subsequent procedures to make an image-receiving sheet for thermal transfer printing. As a result, it was found that the sheet has fine wrinkles on the surface, revealing that the intermediate layer was swollen or dissolved with the organic solvent for the image-receiving layer.
  • Example 14 The procedures of Example 14 were repeated, except that the upper layer of the intermediate layer was not formed and after formation of the lower layer, to thereby form an image-receiving layer directly. As a result, it was found that the solvent for the image-receiving layer infiltrated into the substrate, causing striking-through. Then, it was also found that the thickness of the sheet prior to and after formation of the image-receiving layer was reduced from 160 micrometers to 135 micrometers. This revealed that the intermediate layer was dissolved with the organic solvent for the image receiving layer.
  • Example 17 The procedures of Example 17 were repeated, except that the upper layer of the intermediate layer was not formed and after formation of the lower layer, to thereby form an image-receiving layer directly. As a result, it was found that the resultant sheet had fine wrinkles on the surface, revealing that the intermediate layer was swollen and dissolved with the organic solvent for the image-receiving layer.
  • the resistance was evaluated by visual observation and measurement of a sheet thickness.
  • the intermediate layer and a black drawing paper were superposed and passed twice through a supercalender at a linear pressure of 50 kg/cm, after which the layer and the paper were separated from each other to observe the respective surfaces.
  • the optical density of cyan color transferred onto the image-receiving layer was evaluated by the use of a reflection densitometer (Macbeth RD914).

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)

Claims (13)

  1. Bildempfangsblatt für den thermischen Übertragungsdruck, dadurch gekennzeichnet, daß es eine Zwischenschicht und eine Bildempfangsschicht, die auf einem Substrat in dieser Reihenfolge gebildet sind, umfaßt, wobei die Zwischenschicht hauptsächlich ein Harz enthält, welches in einem organischen Lösungsmittel unlöslich ist, die Bildempfangsschicht hauptsächlich ein Harz enthält, welches in einem organischen Lösungsmittel löslich ist, wobei das unlösliche Harz aus einem Copolymerlatex hergestellt worden ist, welcher die folgenden Forderungen (a) und (b) erfüllt:
    Figure imgb0007
  2. Bildempfangsblatt für den thermischen Übertragungsdruck nach Anspruch 1, dadurch gekennzeichnet, daß der Copolymerlatex in einer Menge von nicht weniger als 60 Gew.-%, bezogen auf die Gesamtfeststoffe in der Zwischenschicht, vorhanden ist.
  3. Bildempfangsblatt für den thermischen Übertragungsdruck nach Anspruch 1, dadurch gekennzeichnet, daß das Substrat ein Papierblatt ist, welches hauptsächlich aus Pulpefasern hergestellt worden ist.
  4. Bildempfangsblatt für den thermischen Übertragungsdruck nach Anspruch 3, dadurch gekennzeichnet, daß das Papierblatt eine Glätte von nicht unter 6% und eine Wasserabsorption von 1 bis 30 g/m² besitzt, bestimmt nach den folgenden Verfahren:
    Glätte: ein Wert, der mit einem besonderen Reflexionsglättetestgerät bei einem Druck von 20 kg/cm² bestimmt wird und
    Wasserabsorption: ein 5-Sekundenwert, der gemäß "einem Testverfahren für die Wasserabsorption von Papier und Pappe (Coppverfahren)", beschrieben in JIS P-8140, bestimmt wird.
  5. Bildempfangsblatt für den thermischen Übertragungsdruck, dadurch gekennzeichnet, daß es eine Zwischenschicht und eine Bildempfangsschicht, die auf einem Substrat gebildet wurde, in dieser Reihenfolge umfaßt, wobei die Zwischenschicht hauptsächlich Harz enthält, das in einem organischen Lösungsmittel unlöslich ist, die Bildempfangsschicht hauptsächlich ein Harz enthält, das in einem organischen Lösungsmittel löslich ist, wobei das unlösliche Harz aus feinen Teilchen eines Polyolefinharzes mit einem Schmelzpunkt nicht unter 70°C und einer Wärmeabsorption, begleitet von Erweichung oder Phasenübergang beim Erhitzen, von nicht über 50 cal/g gebildet worden ist.
  6. Bildempfangsblatt für den thermischen Übertragungsdruck nach Anspruch 5, dadurch gekennzeichnet, daß die feinen Teilchen auf dem Polyolefinharz in einer Menge von nicht unter 10 Gew.-%, bezogen auf die Gesamtfeststoffe in der Zwischenschicht, vorhanden sind.
  7. Bildempfangsblatt für den thermischen Übertragungsdruck nach Anspruch 6, dadurch gekennzeichnet, daß die feinen Teilchen auf dem Polyolefinharz in einer Menge von nicht unter 60 Gew.-%, bezogen auf die Gesamtfeststoffe in der Zwischenschicht, vorhanden sind.
  8. Bildempfangsblatt für den thermischen Übertragungsdruck nach Anspruch 5, dadurch gekennzeichnet, daß das Substrat ein Papierblatt ist, welches hauptsächlich aus Pulpefasern hergestellt worden ist.
  9. Bildempfangsblatt für den thermischen Übertragungsdruck nach Anspruch 8, dadurch gekennzeichnet, daß das Papierblatt eine Glätte von nicht unter 6% und eine Wasserabsorption von 1 bis 30 g/m² besitzt, bestimmt nach den folgenden Verfahren:
    Glätte: ein Wert, der mit einem besonderen Reflexionsglättetestgerät bei einem Druck von 20 kg/cm² bestimmt wird, und
    Wasserabsorption: ein 5-Sekundenwert, bestimmt gemäß einem "Testverfahren für die Wasserabsorption von Papier und Pappe (Coppverfahren)", welches in JIS P-8140 beschrieben wird.
  10. Bildempfangsblatt für den thermischen Übertragungsdruck, dadurch gekennzeichnet, daß es eine Zwischenschicht und eine Bildempfangsschicht, die auf einem Substrat in dieser Reihenfolge gebildet wurde, enthält, wobei die Zwischenschicht hauptsächlich ein Harz enthält, das in einem organischen Lösungsmittel unlöslich ist, und das Bildempfangsblatt hauptsächlich ein Harz enthält, das in einem organischen Lösungsmittel löslich ist, wobei die Zwischenschicht hohle Teilchen im unlöslichen Harz enthält.
  11. Bildempfangsblatt für den thermischen Übertragungsdruck nach Anspruch 10, dadurch gekennzeichnet, daß die hohlen Teilchen in einer Menge von nicht weniger als 50 Gew.-%, bezogen auf die Gesamtfeststoffe in der Zwischenschicht, vorhanden sind.
  12. Bildempfangsblatt für den thermischen Übertragungsdruck nach Anspruch 10, dadurch gekennzeichnet, daß das Substrat ein Papierblatt ist, welches hauptsächlich aus Pulpefasern hergestellt worden ist.
  13. Bildempfangsblatt für den thermischen Übertragungsdruck nach Anspruch 12, dadurch gekennzeichnet, daß das Papierblatt eine Glätte von nicht unter 6% und eine Wasserabsorption von 1 bis 30 g/m² besitzt, bestimmt nach den folgenden Verfahren:
    Glätte: ein Wert, der mit einem besonderen Reflexionsglättetestgerät bei einem Druck von 20 kg/cm² bestimmt wird, und
    Wasserabsorption: ein 5-Sekundenwert, bestimmt gemäß einem "Testverfahren für die Wasserabsorption von Papier und Pappe (Coppverfahren)", welches in JIS P-8140 beschrieben ist.
EP88111947A 1987-07-24 1988-07-25 Farbstoffempfangsschicht für thermischen Farbstoffübertragungsdruck Expired - Lifetime EP0300505B1 (de)

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EP93100728A EP0545893B1 (de) 1987-07-24 1988-07-25 Farbstoffempfangsschicht für thermischen Farbstoffübertragungsdruck

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JP186096/87 1987-07-24
JP62186096A JPH0832487B2 (ja) 1987-07-24 1987-07-24 熱転写記録用受像シ−ト
JP186095/87 1987-07-24
JP62186095A JPH0825339B2 (ja) 1987-07-24 1987-07-24 熱転写記録用受像シ−ト
JP259968/87 1987-10-15
JP62259968A JPH0635212B2 (ja) 1987-10-15 1987-10-15 熱転写記録用受像シート
JP115065/88 1988-05-11
JP63115065A JP2575177B2 (ja) 1988-05-11 1988-05-11 被熱転写シート

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EP93100728.0 Division-Into 1993-01-19

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EP0300505A3 EP0300505A3 (en) 1990-05-30
EP0300505B1 true EP0300505B1 (de) 1993-10-13

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US5318943A (en) * 1991-05-27 1994-06-07 Dai Nippon Printing Co., Ltd. Thermal transfer image receiving sheet
EP0537485B1 (de) * 1991-10-04 1996-11-13 Minnesota Mining And Manufacturing Company Neue Rezeptoren für Farbstoffübertragung
US5762743A (en) * 1995-05-15 1998-06-09 Fuji Photo Film Co., Ltd. Image forming kit and image receiving sheet
JPH10193805A (ja) * 1996-12-27 1998-07-28 Dainippon Printing Co Ltd 熱転写受像シート及びその製造方法
DE10064171B4 (de) * 2000-12-22 2004-05-27 Felix Schoeller Jr. Foto- Und Spezialpapiere Gmbh & Co. Kg Schichtträger für Bildaufzeichnungsmaterialien
US7034856B2 (en) 2001-12-07 2006-04-25 Ricoh Company, Ltd. Receiving cloth for thermal transfer recording, and method of thermal transfer recording using the cloth
EP1655144B1 (de) 2003-08-05 2008-05-21 Oji Paper Co., Ltd. Wärmetransferaufnahmebogen, verfahren zur herstellung desselben und verfahren zur bilderzeugung damit
US7223513B2 (en) * 2004-08-25 2007-05-29 Konica Minolta Photo Imaging, Inc. Thermal transfer image receiving sheet and manufacturing method of thermal transfer image receiving sheet
GB0424878D0 (en) * 2004-11-10 2004-12-15 Innovia Films Ltd Innovia films case A100
JP4490382B2 (ja) * 2006-02-28 2010-06-23 富士フイルム株式会社 感熱転写受像シートおよびその製造方法

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JPS57116692A (en) * 1981-01-13 1982-07-20 Ricoh Co Ltd Thermal recording sheet
JPS61144394A (ja) * 1984-12-18 1986-07-02 Dainippon Printing Co Ltd 被熱転写シ−ト
JPS61192595A (ja) * 1985-02-20 1986-08-27 Ricoh Co Ltd 感熱転写媒体
JPH0710630B2 (ja) * 1985-06-24 1995-02-08 大日本印刷株式会社 被熱転写シ−ト

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EP0300505A2 (de) 1989-01-25
DE3856292T2 (de) 1999-06-02
EP0545893A1 (de) 1993-06-09
DE3856292D1 (de) 1999-02-11
DE3884877T2 (de) 1994-03-17
EP0545893B1 (de) 1998-12-30
EP0300505A3 (en) 1990-05-30
DE300505T1 (de) 1989-07-13

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