Patent EP0138483A2 successfully refreshed from Google Patents.
EP0138483A2
Expired / Lapsed
EP
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Color sheets for thermal transfer printing
Assignee: Panasonic Holdings Corp
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Filing: 1984-09-28
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Granted: —
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Expires: 2004-09-28
Abstract
Abstract @ A color sheet (S) for thermal transfer printing comprises a substrate (1) having a colorant layer (2) on one side and a resin layer (3) on the other side, the resin layer (3) being made of a resin composition comprising fine particles (4) and a lubricating material dispersed in a binder resin. The resin layer (3) has a rough surface due to the presence of the fine particles (4) so that the color sheet does not stick to a thermal head and the resulting image is free of dropout defects and is of good quality.
Inventors
- 👤 Akihiro Imai
- 👤 Tokihiko Shimizu
- 👤 Nobuyoshi Taguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 10:09
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/40; B41M5/42; B41M5/405; B41M5/44; B41M5/443; B41M2205/00; B41M2205/02; B41M2205/06; B41M5/423; B41M5/426; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31928; Y10T428/31935
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
95 words
A color sheet (S) for thermal transfer printing which comprises a polymer film substrate (1) having a colorant layer (2) on one side thereof and a resin layer (3) on the other side thereof, said resin layer (3) being made of a composition which comprises a binder resin, 1.0 to 200 wt% of fine particles (4) of a solid material having an average size not larger than 6 pm and 0.1 to 50 wt% of a lubricating material dispersed throughout the binder resin, both weight percentages being based on the weight of the binder resin.
Claim 2
Dependent Claim
95 words
A color sheet (S) for thermal transfer printing which comprises a polymer film substrate (1) having a colorant layer (2) on one side thereof and a resin layer (3) on the other side thereof, said resin layer (3) being made of a composition which comprises a binder resin, 1.0 to 200 wt% of fine particles (4) of a solid material having an average size not larger than 6 pm and 0.1 to 50 wt% of a lubricating material dispersed throughout the binder resin, both weight percentages being based on the weight of the binder resin.
Claim 3
Dependent Claim
27 words
A color sheet according to claim 1, wherein said fine particles (4) are present in an amount of from 5 to 100 wt% of said resin binder.
Claim 4
Dependent Claim
31 words
A color sheet according to claim 1 or 2, wherein said fine particles (4) are of carbon black, synthetic amorphous silicon oxide, aluminium oxide, titanium oxide, calcium silicate or aluminium silicate.
Claim 5
Dependent Claim
21 words
A color sheet according to claim 1, 2 or 3, wherein said lubricating material is at least one surface active agent.
Claim 6
Dependent Claim
36 words
A color sheet according to claim 4, wherein said lubricating material is a mixture of at least two surface active agents, one having an HLB value below 3 and another having an HLB value over 3.
Claim 7
Dependent Claim
33 words
A color sheet according to claim 4 or 5, wherein said lubricating material is a mixture of at least two surface active agents, the HLB values of which differ by 3 or more.
Claim 8
Dependent Claim
28 words
A color sheet according to claim 1, 2 or 3, wherein said lubricating material is a mixture of a liquid and/or solid lubricant and a surface active agent.
Claim 9
Dependent Claim
20 words
A color sheet according to claim 7 wherein said surface active agent is a silicone or fluorine-containing surface active agent.
Claim 10
Dependent Claim
22 words
A color sheet according to any one of the preceding claims, wherein said binder resin is a resin curable with actinic light.
Claim 11
Dependent Claim
15 words
A color sheet according to claim 9, wherein said binder resin is a curable oligoacrylate.
Claim 12
Dependent Claim
23 words
A color sheet according to any one of the preceding claims, wherein a colorant in the colorant layer (2) is a sublimable dye.
References Cited (Backward Citations)
No citation records indexed.
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