EP0319331A2
Expired / Lapsed
EP
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A dye-transfer-type thermal printing sheet
Assignee: Panasonic Holdings Corp
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Filing: 1988-12-02
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Granted: —
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Expires: 2008-12-02
Abstract
Abstract A dye-transfer-type thermal printing sheet is disclosed which comprises a substrate and a colored layer disposed on the substrate, the colored layer comprising wax and one or more fatty acid amides. The dye-transfer-type thermal printing sheet has a high recording density when an image is recorded on an image-receiving sheet, and may readily be peeled off the image-receiving sheet once recording is complete. Its properties are largely unaffected by transport and storage.
Inventors
- 👤 Tetsuji Kawakami
- 👤 Hiromu Matsuda
- 👤 Keiichi Yubakami
- 👤 Akihiro Imai
- 👤 Nobuyoshi Taguchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 12:50
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/392
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
29 words
A dye-transfer-type thermal printing sheet which comprises a substrate and a colored layer disposed on the substrate, the colored layer comprising wax and one or more fatty acid amides.
Claim 2
Dependent Claim
29 words
A dye-transfer-type thermal printing sheet which comprises a substrate and a colored layer disposed on the substrate, the colored layer comprising wax and one or more fatty acid amides.
Claim 3
Dependent Claim
27 words
A dye-transfer-type thermal printing sheet according to Claim 1, wherein the fatty acid amides comprise at least one of oleamide, stearamide, cis -13-docosenoamide, lauramide, oxystearamide, and n-oleylpalmitamide.
Claim 4
Dependent Claim
26 words
A dye-transfer-type thermal printing sheet according to Claim 1 or 2, wherein the wax comprises at least one of paraffin wax, microcrystalline wax, and oxidized wax.
Claim 5
Dependent Claim
37 words
A dye-transfer-type thermal printing sheet according to any one of the preceding claims, wherein the wax and the fatty acid amides, are each included in the colored layer in a proportion of 1 to 10% by weight.
Claim 6
Dependent Claim
31 words
A dye-transfer-type thermal printing sheet according to any one of the preceding claims, wherein the heat deformation temperature of the entire colored layer is in the range of 60 to 120°C.
Claim 7
Dependent Claim
51 words
A dye-transfer-type thermal printing sheet according to Claim 5, wherein the colored layer comprises, as a binding material, a resin having a glass transition temperature of at least 65°C or a reactant derived from the reaction of cross-linking agents with a resin having a glass transition temperature of at least 65°C.
Claim 8
Dependent Claim
33 words
A dye-transfer-type thermal printing sheet according to any one of the preceding claims, wherein an adhesive layer comprising an adhesive resin and a dye is disposed between the substrate and the colored layer.
Claim 9
Dependent Claim
37 words
A dye-transfer-type thermal printing sheet according to Claim 7, wherein the dye in the adhesive layer includes dye that constitutes the portion of the colored layer corresponding to at least the upper portion of the adhesive layer.
Claim 10
Dependent Claim
44 words
A dye-transfer-type thermal printing sheet according to Claim 7 or 8, wherein the percentage of dye included in the adhesive layer is at least one half of that of the dye of the colored layer corresponding to the upper portion of the adhesive layer.
Claim 11
Dependent Claim
35 words
A dye-transfer-type thermal printing sheet according to any one of the preceding claims, wherein the adhesive resin included in the adhesive layer comprises at least one of saturated polyester resin, polyurethane resin, and acrylic resin.
Claim 12
Dependent Claim
28 words
Use of a dye-transfer-type thermal printing sheet as claimed in any one of the Claims 1 to 10 in the recording of an image on an image-receiving sheet.
References Cited (Backward Citations)
No citation records indexed.
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