Patent EP0754563A2 successfully refreshed from Google Patents.
EP0754563A2
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Thermal transfer sheet
Assignee: Dai Nippon Printing Co Ltd
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Filing: 1996-07-19
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Granted: —
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Expires: 2016-07-19
Abstract
Abstract A thermal transfer sheet is provided which can provide a sharp image having a satisfactory density and excellent various types of fastness, particularly excellent light fastness. The thermal transfer sheet comprises a substrate sheet and a dye layer provided on one surface of the substrate sheet. The dye layer is formed of a dye and a binder, the dye is represented by the following general formula (I): <CHEM> <IMAGE>
Inventors
- 👤 Hiroshi c/o Dai Nippon Printing Co. Ltd. Eguchi
- 👤 Kazuya C/O Dai Nippon Printing Co. Ltd. Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 23:10
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; B41M5/39; C; C09; C09B; C09B55/00; C09B55/009; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A thermal transfer sheet comprising: a substrate sheet; and a dye layer provided on one surface of the substrate sheet, the dye layer being formed of a dye and a binder, the dye contained in the dye layer being at least one member selected from dyes represented by the following general formulae (I) and (II): wherein R 1 and R 2 each independently represent a substituted or unsubstituted alkyl, cycloalkyl, aralkyl, or aryl group; R 3 represents a hydrogen atom, a halogen, a cyano group, a hydroxyl group, a substituted or unsubstituted alkyl, alkoxy, cycloalkyl, aralkyl, aryl, acyl, acylamino, or alkylsulfonylamino group; R 4 represents a substituted or unsubstituted alkyl, cycloalkyl, or aralkyl group; R 5 represents a substituted or unsubstituted aminocarbonyl, alkoxycarbonyl, or aryloxycarbonyl group; and n is an integer of 1 or 2; and wherein R 1 , R 2 , R 3 , and n are as defined above in connection with the formula (I), R 4 represents a substituted or unsubstituted alkyl, cycloalkyl, aralkyl, or aryl group, and R 5 represents a cyano group.
Claim 2
Dependent Claim
399 words
The thermal transfer sheet according to claim 1, wherein R 1 and R 2 in the formulae (I) and (II) each independently represent a substituted or unsubstituted C 1 - C 8 , preferably C 1 - C 4 , alkyl group, a substituted or unsubstituted C 3 - C 8 , preferably C 5 - C 7 , cycloalkyl group, a substituted or unsubstituted C 6 - C 13 , preferably C 6 - C 11 , aralkyl, or a substituted or unsubstituted C 5 - C 13 , preferably C 5 - C 10 , aryl group; the hydrocarbon residue represented by R 3 is a substituted or unsubstituted C 1 - C 8 , preferably C 1 - C 4 , alkyl, a substituted or unsubstituted C 1 - C 8 , preferably C 1 - C 4 , alkoxy, a substituted or unsubstituted C 3 - C 8 , preferably C 5 - C 7 , cycloalkyl, a substituted or unsubstituted C 6 - C 13 , preferably C 6 - C 11 , aralkyl, a substituted or unsubstituted C 5 - C 13 , preferably C 5 - C 10 , aryl, a substituted or unsubstituted C 1 - C 8 , preferably C 1 - C 4 , acyl, a substituted or unsubstituted C 1 - C 8 , preferably C 1 - C 4 , acylamino, or a substituted or unsubstituted C 1 - C 8 , preferably C 1 - C 4 , alkylsulfonylamino; the hydrocarbon residue represented by R 4 is a substituted or unsubstituted C 1 - C 8 , preferably C 1 - C 6 , alkyl, a substituted or unsubstituted C 3 - C 8 , preferably C 5 - C 7 , cycloalkyl, a substituted or unsubstituted C 6 - C 13 , preferably C 6 - C 11 , aralkyl, or a substituted or unsubstituted C 5 - C 13 , preferably C 5 - C 10 , aryl group; and the hydrocarbon residue represented by R 5 is a substituted or unsubstituted C 1 - C 8 , preferably C 1 - C 6 , aminocarbonyl, a substituted or unsubstituted C 1 - C 8 , preferably C 1 - C 6 , alkoxycarbonyl, or a substituted or unsubstituted C 5 - C 13 , preferably C 5 - C 10 , aryloxycarbonyl group.
References Cited (Backward Citations)
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