EP0584382A1 - Bildaufnahmesubstrat für ein aus dem Sublimationstype wärmeempfindlichen Farbstoffübertragung - Google Patents

Bildaufnahmesubstrat für ein aus dem Sublimationstype wärmeempfindlichen Farbstoffübertragung Download PDF

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Publication number
EP0584382A1
EP0584382A1 EP92114307A EP92114307A EP0584382A1 EP 0584382 A1 EP0584382 A1 EP 0584382A1 EP 92114307 A EP92114307 A EP 92114307A EP 92114307 A EP92114307 A EP 92114307A EP 0584382 A1 EP0584382 A1 EP 0584382A1
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EP
European Patent Office
Prior art keywords
image
dye
resins
receiving sheet
sublimation
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.)
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Application number
EP92114307A
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English (en)
French (fr)
Inventor
Kenji C/O Central Research Lab. Kushi
Takayuki C/O Central Research Lab. Iseki
Tadayuki C/O Central Research Lab. Fujiwara
Kazuhiko C/O Central Research Lab. Jufuku
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Mitsubishi Rayon Co Ltd
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Mitsubishi Rayon Co Ltd
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Priority to CA002076471A priority Critical patent/CA2076471A1/en
Priority claimed from CA002076471A external-priority patent/CA2076471A1/en
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Priority to EP92114307A priority patent/EP0584382A1/de
Publication of EP0584382A1 publication Critical patent/EP0584382A1/de
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • B41M5/26—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
    • 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
    • B41M5/5209—Coatings prepared by radiation-curing, e.g. using photopolymerisable compositions

Definitions

  • the present invention relates to an image-receiving sheet for use in a sublimation-type heat-sensitive transfer recording process.
  • a sublimation-type heat-sensitive transfer recording process is characterized by a low noise output, small-sized, low priced apparatus having a short output time and which is easily conserved.
  • high gradation recording characterized by such qualities as a high density and a high definition can be carried out by means of continual fluctuation of the heat generating energy amount.
  • it is particularly advantageous in obtaining full color copies. Accordingly, it is widely employed as the recording process in color printers, video printers, and the like.
  • a prior art image-receiving sheet for use in sublimation-type heat-sensitive transfer recording processes which is comprised of a dye-receiving layer formed on top of a laminated substrate, which in turn is formed of a synthesized paper (mainly polypropylene paper) laminated on top of conventional paper, as disclosed in U.S. Patent 4,778,782, has come to be employed.
  • a synthesized paper mainly polypropylene paper
  • the purpose of the present invention is to improve on the disturbances in the recording image quality caused by poor surface smoothness of the dye-receiving layer, as well as to improve the coloring sensitivity of the image-receiving sheet.
  • the image-receiving sheet for use in a sublimation-type heat-sensitive transfer recording process incorporates a high polymer layer in between the substrate and dye-receiving layers.
  • the dye-receiving layer has a surface roughness degree defined by a center line average roughness (R a ) of 0.3 ⁇ m or less, and a maximum height (R max ) of 5 ⁇ m or less.
  • the surface roughness degree of the dye-receiving layer was measured by means of JIS-B-0601.
  • the recording sensitivity is improved, disturbances of the recording image quality can be greatly reduced, and high projection vividness, as well as superior intermediate gradation reproductivity can be obtained.
  • Figure 1 is a sectional view outlining an example of an image-receiving sheet for use in a sublimation-type heat-sensitive transfer recording process according to the present invention.
  • FIG. 1 is a sectional view showing an example of an image-receiving sheet for use in a sublimation-type heat-sensitive transfer recording process according to the present invention (hereinafter referred to as "an image-receiving sheet").
  • numeral 1 represents the substrate
  • numeral 2 represents the high polymer layer
  • numeral 3 represents the dye-receiving layer.
  • the substrate 1 use of conventional paper such as baryta paper, art paper and coat paper having a thickness of preferably 10 ⁇ 200 ⁇ m. In view of the heat durability, paper with a large thickness and a smooth surface is preferred.
  • a high polymer layer 2 is provided on one surface of this substrate 1.
  • This high polymer layer 2 is formed from thermoplastic resins such as polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polymethylmethacrylate, acryl-based copolymers, polyvinyl chloride, vinyl chloride-vinyl acetate copolymers, polyvinylidene chloride, ionomer resins, butyral resins, and the like, thermosetting resins such as epoxy resins, unsaturated polyester resins, and the like, ultraviolet ray curable resins, and electron ray curable resins.
  • thermoplastic resins such as polyethylene, polypropylene, polyethylene terephthalate, polystyrene, polymethylmethacrylate, acryl-based copolymers, polyvinyl chloride, vinyl chloride-vinyl acetate copolymers, polyvinylidene chloride, ionomer resins, butyral resins, and the like
  • inorganic materials, dyes, pigments, stabilizing agents, fluorescent whitening agents, and the like having minute particle diameters can be incorporated into the high polymer layer 2.
  • the image-receiving sheet of the present invention in order to have an even (smooth) surface, to possess a dye-receiving layer 3 with a surface roughness degree, as stated above, defined by an R a of 0.3 ⁇ m or less and an R max of 5 ⁇ m or less.
  • the existence of a high polymer layer 2 likewise possessing an even (smooth) surface is preferred: for example, it is preferred that the surface roughness degree of the high polymer layer 2, measured also by means of JIS-B-0601, be defined by center line average roughness (R a ) of 0.3 ⁇ m or less, and a maximum height (R max ) of 5 ⁇ m or less. At this time, the cut off value of is 0.8 mm and the measured length is 8 mm.
  • R a of high polymer layer 2 exceeds 0.3 ⁇ m, or if R max exceeds 5 ⁇ m, obtaining a dye-receiving layer with a smooth surface tends to become difficult, and irregularities during recording, such as dot errors and dot omissions of the image, as well as disturbances in the image quality occur, bringing out a rough impression in the intermediate gradation.
  • the high polymer layer 2 has a thickness of preferably 1 ⁇ 100 ⁇ m, more preferably 5 ⁇ 70 ⁇ m. If the thickness of high polymer layer 2 is less than 1 ⁇ m, leveling the substrate unevenness becomes very difficult, and as a result it becomes difficult to obtain a dye-receiving layer, to be applied on top of the substrate, with a sufficient surface smoothness, and thus the image quality when recording is degraded. Additionally, the recording sensitivity has a tendency to decrease as well. On the other hand, if the thickness exceeds 100 ⁇ m, there are cases when the time required for drying as well as curing the high polymer layer 2 with ultraviolet rays or electron rays as well as for thermosetting becomes longer, and the cost becomes greater.
  • the coating method for providing high polymer layer 2 on top of substrate 1 methods in which resin solutions, formed by dissolving the above mentioned thermoplastic resins, thermosetting resins, ultraviolet ray curable resins, electron ray curable resins, and the like in a suitable solvent are formed, coated on the substrate using roll coating methods, blade coating methods, flow coating methods, lip coating methods and the like, and then dried, as well as methods in which heat is applied to the above mentioned thermoplastic resins forming a melt which is then applied as a coat onto the substrate and cooled, or methods in which films formed from the above mentioned resins are pasted onto substrate 1 using an adhesive agent can be used.
  • a dye-receiving layer 3 On top of this high polymer layer 2, a dye-receiving layer 3 is provided. This dye-receiving layer 3 receives and develops the sublimable dye which is transferred from the transfer sheet.
  • the raw material for forming the dye-receiving layer 3 is not limited to anything in particular, so long as it is a material which can be well dyed with a sublimable dye, and also, at the time of recording, does not cause blocking with the transfer sheet.
  • the dyeable resin the following can be used: cellulose resins such as methyl cellulose, ethyl cellulose, ethylhydroxy cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, cellulose acetate and the like, vinyl resins such as polyvinyl alcohol, polyvinyl butyral, polyvinyl acetal, polyvinyl acetate, polyvinyl chloride, polyvinyl pyrrolidone, polystyrene and the like, acrylate resins such as polymethyl(meth)acrylate, polybutyl(meth)acrylate, polyacrylamide, polyacrylonitrile and the like, polyester resins, polycarbonate resins, polyurethane resins, polyamide resins, urea resins, polycarprolactone resins, polyarylate resins, polysulfone resins and the like as well as their copolymers and mixtures.
  • polyester resins since polyester resins are well dyed by the sublimable
  • polyester resin there can be mentioned linear thermoplastic polyester resins obtained by polycondensation between a dicarboxylic acid and a diol, and/or unsaturated polyester resins obtained by polycondensation between an unsaturated polybasic acid having a reactive double bond and a polyhydric alcohol.
  • a linear thermoplastic polyester resin having a molecular weight of 2,000 to 40,000 and a crystallization degree of not higher than 1%, which is obtained by polycondensation between at least one dicarboxylic acid and at least one diol is preferred.
  • the linear thermoplastic polyester resin obtained by polycondensation between at least one dicarboxylic acid and at least one diol there can be mentioned a polyester resin obtained from terephthalic acid, isophthalic acid, ethylene glycol and neopentyl glycol, a polyester resin obtained from terephthalic acid, isophthalic acid, ethylene glycol and a bisphenol A/ethylene oxide adduct, a polyester resin obtained from terephthalic acid, isophthalic acid, ethylene glycol and 1,6-hexanediol, a polyester resin obtained from terephthalic acid, isophthalic acid, sebacic acid, ethylene glycol and neopentyl glycol, a polyester resin obtained from terephthalic acid, sebacic acid, ethylene glycol and neopentyl glycol, and a polyester resin obtained from terephthalic acid, isophthalic acid, adipic acid, ethylene glycol and neopentyl glycol,
  • polyester resins can be used singly, or in the form of mixtures of two or more thereof. In order to improve the stability against light, heat, water or others, preferably two or more of these polyester resins are used in combination. For example, when two polyesters A and B are used, preferably the A/B weight ratio is from 20/80 to 80/20.
  • esterificated dimethylterephthalate, dimethylisoterephthalate, and the like in the condensation polymer raw material.
  • the unsaturated polyester resin obtained by the polycondensation of an unsaturated polybasic acid possessing a reactive double bond, and a polyalcohol there can be mentioned resins obtained from the following: maleic anhydride/phthalic anhydride/propylene glycol, maleic anhydride/isophthalic acid/propylene glycol, maleic acid/fumaric acid/isophthalic acid/1,3-butane diol, maleic acid/isophthalic acid/neopentyl glycol, maleic anhydride/tetrahydrophthalic anhydride/dipropylene glycol, and the like.
  • incorporation of a crosslinking component into the dye-receiving layer 3 of the present invention is preferred.
  • a thermosetting component of isocyanate and polyol are incorporated, and the formation of the dye-receiving layer is carried out followed by thermocrosslinking, or the dye-receiving layer can be obtained by coating a crosslinking agent which can be cured with active energy rays, as disclosed in Japanese Patent Application (Kokai) 62-46689 and in EP-0261505-A2, for example the dye-receiving layer can be obtained by coating a resin composition incorporating a monomer or oligomer possessing an acryloyloxy group or a methacryloyloxy group on top of the substrate, followed by curing with active energy rays.
  • the method in which the dye-receiving layer is obtained by incorporating a component which can be crosslinked with active energy rays, followed by curing with active energy rays has a high productivity.
  • the dye-receiving layer which can be obtained is easily dyed with a sublimable dye, has a superior stability and an excellent luster maintenance, and thus this method is more preferred.
  • the amounts of the dyeable resin and the crosslinking agent to be used are not in particular limited, however it is preferred that the amount of the dyeable resin incorporated range from 40 ⁇ 95% by weight, and the amount of the crosslinking agent incorporated range from 60 ⁇ 5% by weight per 100 parts by weight of the total amount of the dyeable resin and crosslinking agent. If the amount of the dyeable resin incorporated is less than 40% by weight, it becomes difficult to both dye the dye-receiving layer obtained with the sublimable dye, and to obtain a sufficient dyeing density. On the other hand, if the amount incorporated exceeds 95% by weight, the dye-receiving layer obtained adheres easily to the transfer sheet during heat transfer.
  • crosslinking agent in the case of thermosetting, there can be mentioned reactive setting silicon oils such as cured amino modified silicon oils and epoxy modified silicon oils.
  • reactive setting silicon oils such as cured amino modified silicon oils and epoxy modified silicon oils.
  • lightsetting there can be mentioned light setting silicon oils and polyfunctional monomers or polyfunctional oligomers possessing (meth)acryloyloxy groups, however, among these, polyfunctional monomers or polyfunctional oligomers possessing (meth)acryloyloxy groups are preferred.
  • Ultraviolet rays that can be easily handled as the active energy rays can be used for these agents, and these agents can be set in a short time period, and are therefore advantageous from a productivity standpoint.
  • polyether acrylate-based or polyether methacrylate-based (hereinafter, "acrylate or methacrylate” will be abbreviated singly as “(meth)acrylate”), polyester (meth)acrylate-based, polyol (meth)acrylate-based, epoxy(meth)acrylate-based, urethane amide (meth)acrylate-based, urethane (meth)acrylate-based, spiroacetal (meth)acrylate-based, polybutadiene (meth)acrylate-based monomer or oligomers.
  • polyether (meth)acrylates such as those synthesized from 1,2,6-hexanetriol, propylene oxide and acrylic acid and from trimethylolpropane, propylene oxide and acrylic acid
  • polyester (meth)acrylates such as those synthesized from adipic acid, 1,6-hexanediol and acrylic acid and from succinic acid, trimethylolethane and acrylic acid
  • (meth)acrylates or polyol (meth)acrylates such as triethylene glycol diacrylate, hexapropylene glycol diacrylate, neopentyl glycol diacrylate, 1,4-butane diol dimethacrylate, 2-ethylhexyl acrylate, tetrahydrofurfuryl acrylate, 2-hydroxyethyl methacrylate, ethylcarbitol acrylate, trimethylolpropane triacrylate, pentaerythr
  • compounds represented by the following general formulae (I),(II) and (III) are especially preferred as the crosslinking agent because they have an excellent quick-drying property in air when ultraviolet rays are used as the active energy rays.
  • dipentaerythritol tetra-acrylate dipentaerythritol penta-acrylate
  • dipentaerythritol hexa-acrylate dipentaerythritol hexa-acrylate
  • tripentaerythritol penta-acrylate tripentaerythritol hexa-acrylate
  • tripentaerythritol hepta-acrylate tripentaerythritol hepta-acrylate.
  • X1,X2,...and X n which may be the same or different, represent an alkylene group having up to 6 carbon atoms, in which one hydrogen atom may be substituted by a hydroxyl group, and n is an integer from 0 to 5).
  • this type of compound there can be mentioned 2,2-bis(4-acryloyloxydiethoxyphenyl)propane, 2,2-bis(4-acryloyloxytriethoxyphenyl)propane and 2,2-bis(4-acryloyloxydipropoxyphenyl)propane.
  • a releasing agent be incorporated into the dye-receiving layer.
  • the releasing agent to be used there can be mentioned at least one member selected from the group consisting of silicon-containing surface active agents, fluorine-containing surface active agents, and graft polymers with polyorganosiloxane in the main stem or in a branch. These aforementioned compounds can also be used jointly as well.
  • the amount of releasing agent incorporated is 0.01 to 12 parts by weight, preferably 0.05 to 10 parts by weight, per 100 parts by weight of the total amount of the dyeable resin and the crosslinking agent.
  • the amount of releasing agent incorporated is less than 0.01 parts by weight, improvement of the anti-blocking property is decreased, while on the other hand, if the amount incorporated exceeds 12 parts by weight, the dye-receiving layer becomes opaque.
  • silicon-containing surface active agent there can be mentioned compounds represented by the following general formulae (IV) and (V): wherein P is: and m and n represent a positive integer, x and y represent 0 or a positive integer, with the proviso that m, n, x and y satisfy the requirement of 1/10 ⁇ (2m + 1) / (nx + ny) ⁇ 10, and R3 represents a hydrogen, an alkyl group, an acyl group, or an aryl group.) wherein Q is: wherein m and n represent a positive integer, x and y represent 0 or a positive integer, with the proviso that m, n, x and y satisfy the requirement of 1/10 ⁇ (2m + n + 1) / (nx + ny) ⁇ 10, and z is 0 or an integer from 1 to 5. Additionally, R4 represents -Si(CH3)3, a hydrogen, an alkyl group, an acyl group or an ary
  • One or more members selected from non-ionic, anionic, cationic, or amphoteric fluorine-containing surface active agents which are soluble to some extent in the mixture of the dyeable resin and the crosslinking agent can be used as the fluorine-containing surface active agent.
  • anionic surface active agents such as fluoroalkoxypolyfluoroalkyl sulfates, fluorocarbon-sulfonic acid salts and fluorocarbon-carboxylic acid salts
  • cationic surface active agents such as N-fluoroalkylsulfonamide alkylamine quaternary ammonium salts, N-fluoroalkylsulfonamide alkylamine salts, N-fluoroalkylamide alkylamine quaternary ammonium salts, N-fluoroalkylamide alkylamine salts and N-fluoroalkylsulfonamide alkylhalomethyl ether quaternary ammonium salts; non-ionic surface active agents such as fluorocarbon sulfonamides, fluorocarbon aminosulfonamides, fluorocarbon carboxysulfonamides, fluorocarbon hydroxysulfonamides, fluorocarbon sulfonamide/
  • graft polymers possessing polyorganosiloxane in the main stem or in a branch there can be mentioned graft polymers having in the main stem polymers or copolymers obtained from vinyl polymerization, condensation polymerization, ring-opening polymerization, and the like, and polyorganosiloxane in a branch.
  • graft polymers obtained from the polymerization of at least one monomer such as alkyl (meth)acrylate, (meth)acrylic acid, (meth)acrylic acid derivatives possessing functional groups, vinyl acetate, vinyl chloride, (meth)acrylonitrile, styrene and the like to a polysiloxane (macromonomer), to which a single terminal metacryloyloxy group, vinyl group or mercapto group has been added; graft polymers obtained from the reaction of a dicarboxylic acid and a diol with a macromonomer, possessing two hydroxyl or carboxyl groups near the polysiloxane end; and graft polymers obtained from the reaction of a diepoxy or a diisocyanate compound with a macromonomer possessing two hydroxyl or carboxyl groups near the polysiloxane end.
  • monomer such as alkyl (meth)acrylate, (meth)acrylic acid, (meth)
  • graft polymers possessing polyorganosiloxane in the main stem or in a branch there can be mentioned graft polymers having polyorganosiloxane in the main stem, and polymers or copolymers obtained from vinyl polymerization, condensation polymerization, ring-opening polymerization, and the like, in a branch.
  • graft polymers obtained from the polymerization of at least one monomer such as alkyl (meth)acrylate, (meth)acrylic acid, (meth)acrylic acid derivatives possessing functional groups, vinyl acetate, vinyl chloride, (meth)acrylonitrile, styrene and the like to a polysiloxane having a methacryloyloxy group in its side chain, synthesized by the condensation of organosilane and silane possessing vinyl polymerizable groups such as 3-methacryloylxypropyl-dimethoxymethylsilane, methylvinyldimethoxysilane, ethylvinyldiethoxysilane, and the like; graft polymers obtained from the polymerization of a monomer possessing a (meth)acryloyloxy group which was obtained through the reaction of (meth)acrylic acid and a polysiloxane possessing a g
  • a cyclic silane as the main raw material, in particular a cyclic dimethylpolysiloxane with 3 ⁇ 8 repeating units, and a silane compound as the molecular weight modifier such as a trimethylmethoxysilane or a trimethylethoxysilane with one alkoxy group per molecule, and reacting this cyclic silane and a silane compound with a silane possessing a functional group under strong acid or strong base catalyst.
  • the resin composition to form the dye-receiving layer 3 can be directly coated using coating methods such as roll coating, bar coating or blade coating.
  • coating methods such as roll coating, bar coating or blade coating.
  • a solvent such as ethyl alcohol, methyl ethyl ketone, toluene, ethyl acetate or dimethylformamide is incorporated to adjust the viscosity to an adequate level.
  • the composition can be easily coated by spray coating, curtain coating, flow coating or dip coating.
  • fine inorganic particles having a particle size smaller than several ⁇ m such as those of silica, alumina, talc and titanium oxide, may be incorporated in the resin composition in accordance with usage objectives.
  • the resin composition incorporating a crosslinking agent curable with active energy rays can be cured by active energy rays such as electron rays, ultraviolet rays, and the like.
  • active energy rays such as electron rays, ultraviolet rays, and the like.
  • a widely known photopolymerization initiator is incorporated into the composition.
  • the amount of the photopolymerization initiator is not in particular limited, however 0.1 to 10.0 parts by weight per 100 parts by weight of the total amount of the above mentioned dyeable resin and the crosslinking component, to form the dye-receiving layer, is preferred.
  • carbonyl compounds such as benzoin, benzoin isobutyl ether, benzyldimethylketal, ethylphenyl glyoxylate, diethoxyacetophenone, 1,1-dichloroacetophenone, 4'-isopropyl-2-hydroxy-2-methylpropiophenone, 1-hydroxycyclohexyl-phenylketone, benzophenone, benzophenone/diethanolamine, 4,4'-bisdimethylamino-benzophenone, 2-methylthioxanthone, tert-butylanthraquinone and benzyl; sulfur compounds such as tetramethylthiuram monosulfide and tetramethylthiuram disulfide; azo compounds such as azobisisobutylonitrile and azobis-2,4-dimethyl-valeronitrile; and peroxides such as benzoyl peroxide and
  • the dye-receiving layer is formed after the aforementioned resin composition is coated on top of the high polymer layer 2 using the aforementioned coating method, followed by drying of the solvent and curing with heat and light as necessary.
  • the thickness of the dye-receiving layer obtained is appropriately 1 ⁇ m or greater. If the thickness is less than 1 ⁇ m, it becomes difficult to deeply dye the dye-receiving layer.
  • the dye-receiving layer formed in this manner have a surface roughness degree as defined in JIS-B-0601 wherein the center line average roughness R a and maximum height R max are shown as 0.3 ⁇ m or less and 5 ⁇ m or less, respectively.
  • R a and maximum height R max are shown as 0.3 ⁇ m or less and 5 ⁇ m or less, respectively.
  • the cut off value at this time was 0.8 mm, and the measured length was 8 mm.
  • the image-receiving sheet of the present invention obtained in this manner, due to the smooth surface of the dye-receiving layer, the recording image quality and the projection vividness are improved.
  • Silicon containing surface active agent A is represented by the following structural formula (VI):
  • a composition consisting of 3 parts of 2P6A, 4 parts of 2P5A, 3 parts of 2P4A, 10 parts of A-DEP, 20 parts of Resin A, 60 parts of Resin B, 0.1 parts of silicon-containing surface active agent A, 5 parts of 1-hydroxycyclohexylphenylketone, 300 parts of methylethylketone and 100 parts of toulene was coated using the comma roll coating method, the solvent was removed, followed by curing of the composition by irradiation with ultraviolet rays to produce a dye-receiving layer of thickness 7 ⁇ m, with an R a of 0.05 ⁇ m and an R max of 1.2 ⁇ m, thereby completing the formation of an image-receiving sheet.
  • a solution consisting of 20 parts of a methylmethacrylate/methylacrylate copolymer in a weight ratio of 90/10, 2 parts of 2P6A, 2 parts of 2P5A, 1 part of 2P4A, 2 parts of benzyldimethylketal and 73 parts of methylethylketone was coated by a lip coating method, dried and cured with ultraviolet rays to produce a high polymer layer of thickness 40 ⁇ m, with an R a of 0.11 ⁇ m and an R max of 2.0 ⁇ m.
  • a dye-receiving layer was formed on top of this high polymer layer in the same manner as example 1, and an image-receiving sheet was obtained.
  • the dye-receiving layer obtained had a thickness of 6 ⁇ m, with an R a of 0.09 ⁇ m and an R max of 1.7 ⁇ m.
  • a solution consisting of 20 parts of a copolymer of vinyl chloride/vinyl acetate in a weight ratio of 85/15, 40 parts of methyl ethyl ketone and 40 parts of toulene was coated using the flow coating method, and dried to produce a high polymer layer of thickness 25 ⁇ m, with an R a of 0.22 ⁇ m and an R max of 3.8 ⁇ m.
  • a composition consisting of 10 parts of a polyester resin (VYLON #200 manufactured by Toyobo Co., Ltd.), 0.5 parts of an amino-modified silicon (KF-393 manufactured by Shin-Etsu Chemical Co., Ltd.), 0.5 parts of an epoxy-modified silicon (X-22-343 manufactured by Shin-Etsu Chemical Co., Ltd.) and 89 parts of a solvent (toulene/methylethylketone: in a weight ratio of 1/1) was coated using a dipping method and dried to produce a dye-receiving layer of thickness 6 ⁇ m, with an R a of 0.26 ⁇ m and an R max of 4.6 ⁇ m. In this manner the image-receiving sheet was formed.
  • An image-receiving sheet was obtained in the same manner as in example 3 except that the high polymer layer of thickness 25 ⁇ m, with an R a of 0.26 ⁇ m and an R max of 4.8 ⁇ m, was formed from polyethylene on the surface of one side of a coat paper using a melt coating method.
  • the dye-receiving layer obtained had a thickness of 6 ⁇ m, with an R a of 0.28 ⁇ m and an R max of 4.8 ⁇ m.
  • An image-receiving sheet was obtained in the same manner as in example 1 except that a high polymer layer was not formed.
  • the dye-receiving layer obtained had a thickness of 7 ⁇ m, with an R a of 1.2 ⁇ m and an R max of 9.5 ⁇ m.
  • An image-receiving sheet was obtained in the same manner as in example 3 except that a high polymer layer was not formed.
  • the dye-receiving layer obtained had a thickness of 6 ⁇ m, with an R a of 2.2 ⁇ m and an R max of 11.7 ⁇ m.
  • polypropylene synthetic paper YUPO FPG (thickness 60 ⁇ m) manufactured by Ozi Yuka Synthetic Paper Co., Ltd. was laminated onto one surface of an art paper of thickness 100 ⁇ m.
  • the surface roughness degree of the polypropylene synthetic paper was defined by an R a of 0.62 ⁇ m and an R max of 11.8 ⁇ m.
  • the dye-receiving layer was then formed on top of this polypropylene synthetic paper and an image-receiving sheet was obtained in the same manner as in example 1.
  • the dye-receiving layer obtained had a thickness of 7 ⁇ m, with an R a of 0.51 ⁇ m and an R max of 8.5 ⁇ m.
  • the anthraquinone-based sublimable dispersing dye was sublimated under conditions in which 13 V of impressed voltage was applied by a 6 dot/mm thermal head for 5 ⁇ 20 ms, following which a color image was recorded.
  • the image-receiving sheet of examples 1 ⁇ 4 smooth intermediate gradations lacking a rough impression were obtained, in addition to a superb projection vividness.
  • comparative examples 1 ⁇ 3 disturbances of the image, as well as a rough impression of the image quality were observed.
  • the image dyeing density was remarkably degraded.

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
EP92114307A 1992-03-26 1992-08-21 Bildaufnahmesubstrat für ein aus dem Sublimationstype wärmeempfindlichen Farbstoffübertragung Withdrawn EP0584382A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002076471A CA2076471A1 (en) 1992-03-26 1992-08-20 Image-receiving sheet for a sublimation-type heat-sensitive transfer recording process
EP92114307A EP0584382A1 (de) 1992-08-20 1992-08-21 Bildaufnahmesubstrat für ein aus dem Sublimationstype wärmeempfindlichen Farbstoffübertragung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002076471A CA2076471A1 (en) 1992-03-26 1992-08-20 Image-receiving sheet for a sublimation-type heat-sensitive transfer recording process
EP92114307A EP0584382A1 (de) 1992-08-20 1992-08-21 Bildaufnahmesubstrat für ein aus dem Sublimationstype wärmeempfindlichen Farbstoffübertragung

Publications (1)

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EP0584382A1 true EP0584382A1 (de) 1994-03-02

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EP92114307A Withdrawn EP0584382A1 (de) 1992-03-26 1992-08-21 Bildaufnahmesubstrat für ein aus dem Sublimationstype wärmeempfindlichen Farbstoffübertragung

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0454428A1 (de) * 1990-04-24 1991-10-30 Oji Paper Company Limited Bildempfänger für thermische Farbstoffübertragung
JPH04105994A (ja) * 1990-08-27 1992-04-07 Toray Ind Inc 熱転写記録用マスターフイルム
JPH04269588A (ja) * 1991-02-25 1992-09-25 Mitsubishi Rayon Co Ltd 昇華型感熱転写記録用受像シート

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0454428A1 (de) * 1990-04-24 1991-10-30 Oji Paper Company Limited Bildempfänger für thermische Farbstoffübertragung
JPH04105994A (ja) * 1990-08-27 1992-04-07 Toray Ind Inc 熱転写記録用マスターフイルム
JPH04269588A (ja) * 1991-02-25 1992-09-25 Mitsubishi Rayon Co Ltd 昇華型感熱転写記録用受像シート

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPIL,nØ 92-178148,Derwent Publications Ltd,London,GB;& JP-A-4105994 (TORAY IND.)07-04-1992 *
DATABASE WPIL,nØ92-369078,Derwent Publications Ltd,London,GB;& JP-A-4269588 (MITSUBISHI RAYON)25-09-1992 *

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