EP0261970A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Dye-receiving sheets for thermal transfer printing comprising a dye-receiving layer containing silane-coupled network structures
Assignee: Panasonic Holdings Corp
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Filing: 1987-09-24
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Granted: —
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Expires: 2007-09-24
Abstract
Abstract A dye-receiving sheet for thermal transfer printing which is used in combination with a dye transfer sheet and comprises a substrate and a dye-receiving layer formed on one side of the substrate. The dye-receiving layer is made of a dye-receiving resin materix dispersing a mixture of a silane copolymer and colloidal silica particles which form strong network structures through silane coupling, and a releasing surface active agent.
Inventors
- 👤 Hiromu Matsuda
- 👤 Nobuyoshi Taguchi
- 👤 Akihiro Imai
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 17:09
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/50; B41M5/52; B41M5/529; B41M5/26; Y; Y10; Y10S; Y10S430/00; Y10S430/142
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
64 words
A dye-receiving sheet for use in thermal transfer printing in combination with a dye transfer sheet having a sublimable dye layer, which dye-receiving sheet comprises a substrate and a dye-receiving layer formed on the substrate and comprised of a dye-receiving resin and a releasing agent, characterized in that said dye-receiving layer further comprises a silane-coupled product of a silane copolymer and colloidal silica particles.
Claim 2
Dependent Claim
64 words
A dye-receiving sheet for use in thermal transfer printing in combination with a dye transfer sheet having a sublimable dye layer, which dye-receiving sheet comprises a substrate and a dye-receiving layer formed on the substrate and comprised of a dye-receiving resin and a releasing agent, characterized in that said dye-receiving layer further comprises a silane-coupled product of a silane copolymer and colloidal silica particles.
Claim 3
Dependent Claim
40 words
A dye-receiving sheet according to Claim 1, wherein said dye-receiving layer comprises from 30 to 95 wt% of the dye-receiving resin, from 5 to 70 wt% of the silane-coupled product and from 0.1 to 20 wt% of the releasing agent.
Claim 4
Dependent Claim
39 words
A dye-receiving sheet according to Claim 2, wherein the amount of dye-receiving resin is 50 to 90 wt%, the amount of silane-coupled product is 10 to 50 wt% and the amount of releasing agent is 1 to 5 wt%.
Claim 5
Dependent Claim
20 words
A dye-receiving sheet according to Claim 1, 2 or 3, wherein said dye-receiving resin is a saturated linear polyester resin.
Claim 6
Dependent Claim
58 words
A dye-receiving sheet according to any one of the preceding claims, wherein the silane copolymer is a copolymer of a silane monomer and at least one acrylic monomer in which the silane monomer is used in an amount of from 1 to 10 parts by weight per 100 parts by weight of the at least one acrylic monomer.
Claim 7
Dependent Claim
38 words
A dye-receiving sheet according to any one of the preceding claims wherein the colloidal silica particles are used in an amount of from 1 to 200 parts by weight per 100 parts by weight of the silane copolymer.
Claim 8
Dependent Claim
27 words
A dye-receiving sheet according to any one of the preceding claims, wherein said releasing agent is a silicone surface active agent having dimethylsilicone units and polyether units.
Claim 9
Dependent Claim
27 words
A dye-receiving sheet according to any one of claims 1 to 6, wherein said agent is a fluorine-containing surface active agent having perfluoroalkyl groups and polyether units.
Claim 10
Dependent Claim
91 words
A process for preparing a dye-receiving sheet as claimed in any one of the preceding claims, which process comprises providing an aqueous composition comprising a dye-receiving resin which is soluble or dispersable in water, an aqueous dispersion of the colloidal silica particles in an emulsion of the silane copolymer, and a releasing agent soluble in water, applying the aqueous composition onto a substrate, and drying the applied composition to form a dye-receiving layer whereupon the emulsion breaks and silane coupling takes place between the silane copolymer and the colloidal silica particles.
Claim 11
Dependent Claim
17 words
A process according to Claim 9 wherein said aqueous composition has a pH not less than 7.
Claim 12
Dependent Claim
30 words
Use in thermal printing of a dye-receiving sheet as claimed in any one of claims 1 to 8 in combination with a dye transfer sheet having a sublimable dye layer.
References Cited (Backward Citations)
No citation records indexed.
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