EP0209991A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Anthraquinone dye
Assignee: Syngenta Ltd
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Filing: 1986-06-24
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Granted: —
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Expires: 2006-06-24
Abstract
Abstract A thermal transfer printing sheet comprising a substrate having a coating comprising an anthraquinone dye of the formula: wherein R is C 1-6 -alkyl, C 4-8 -cycloalkyl or C 2-6 -alkenyl; R' is C 1-8 -alkyl or C 2 6 -alkenyl; and R 2 is H or C 1-6 -alkyl or C 2-6 -alkenyl, and its use in the preparation of a printed image on a receiver sheet by selective heating of the transfer sheet, in accordance with a pattern information signal, while in contact with the receiver sheet.
Inventors
- 👤 Peter Gregory
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 13:01
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; B41M5/3852; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
52 words
A thermal transfer printing sheet comprising a substrate having a coating comprising an anthraquinone dye of the formula: wherein R is C 1-6 -alkyl, C 4-8 -cycloalkyl or C 2-6 -alkenyl; R is C 1-6 -alkyl or C 2-6 -alkenyl; and R is H or C 1-6 -alkyl or C 2-6 -alkenyl.
Claim 2
Dependent Claim
52 words
A thermal transfer printing sheet comprising a substrate having a coating comprising an anthraquinone dye of the formula: wherein R is C 1-6 -alkyl, C 4-8 -cycloalkyl or C 2-6 -alkenyl; R is C 1-6 -alkyl or C 2-6 -alkenyl; and R is H or C 1-6 -alkyl or C 2-6 -alkenyl.
Claim 3
Dependent Claim
14 words
A transfer sheet according to Claim 1 wherein R is branched C 3-5 -alkyl.
Claim 4
Dependent Claim
17 words
A transfer sheet according to Claim 1 wherein R 1 is 4-methyl and R 2 is H.
Claim 5
Dependent Claim
13 words
A transfer sheet comprising a substrate having a coating comprising the dye 1-1-propylamino-4-(4-methylphenylamino)-AQ.
Claim 6
Dependent Claim
13 words
A transfer sheet comprising a substrate having a coating comprising the dye 1-1-propylamino-4-(4-methylphenylamino)-AQ.
Claim 7
Dependent Claim
67 words
A transfer printing process which comprises contacting a transfer sheet according to Claim 1 with a receiver sheet, so that the surface of the sheet carrying the dye is in contact with the receiver sheet and selectively heating areas of the opposite side of the transfer sheet in order to transfer dye in the heated areas of the transfer sheet is selectively transferred to the receiver sheet.
References Cited (Backward Citations)
No citation records indexed.
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