EP0209990A2
Expired / Lapsed
EP
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Thermal transfer printing
Assignee: Imperial Chemical Industries Ltd
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Filing: 1986-06-24
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Granted: —
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Expires: 2006-06-24
Abstract
Abstract The invention relates to:- (A) A thermal transfer printing sheet comprising a substrate having a coating comprising either, (i) a dye of the formula wherein R' is C 5-12 -alkyl; R 2 is H or C 1-12 -alkyl; and Rings A & B are optionally substituted in the free positions by non-ionic groups; or (ii) a mixture of at least two dyes of the formula: wherein R 3 is H or C 1-12 -alkyl; R 4 is H or C 1-4 -alkyl; and Rings A & B are optionally substituted in the free positions by non-ionic groups; provided that in at least one component R 3 is C 5-12 -alkyl and in at least one other component R 3 is H or C 1-4 -alkyl, (B) A thermal transfer printing process using the transfer sheets; and (C) The mixture of dyes defined in (A)(ii).
Inventors
- 👤 William Black
- 👤 Roy Bradbury
- 👤 Peter Gregory
- 👤 Roy Porter
- 👤 Geoffrey Richard Rothwell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-25 18:40
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; B41M5/3852; C; C09; C09B; C09B67/00; C09B67/0033; C09B67/0034; C09B67/0038; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S8/00; Y10S8/92; Y10S8/922; Y10S8/928
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
46 words
A thermal transfer printing sheet comprising a substrate having a coating comprising a dye of the formula: wherein R 1 is C 5-12 -alkyl; R2 is H or C 1-12 -alkyl; and Rings A & B are optionally substituted in the free positions by non-ionic groups.
Claim 2
Dependent Claim
46 words
A thermal transfer printing sheet comprising a substrate having a coating comprising a dye of the formula: wherein R 1 is C 5-12 -alkyl; R2 is H or C 1-12 -alkyl; and Rings A & B are optionally substituted in the free positions by non-ionic groups.
Claim 3
Dependent Claim
40 words
A thermal transfer printing sheet according to Claim 1 wherein R 1 is C 6-10 -alkyl and in the para position with respect to the link between rings B and D and that R is H or C 1-4 -alkyl.
Claim 4
Dependent Claim
17 words
A thermal transfer printing sheet according to Claim 1 or Claim 2 wherein R 1 is branched.
Claim 5
Dependent Claim
13 words
A thermal transfer printing sheet comprising a substrate having a coating of 1-amino-2-(4-[1,1,3,3-tetramethyl-butyl]-phenoxy)-4-hydroxy-AQ.
Claim 6
Dependent Claim
13 words
A thermal transfer printing sheet comprising a substrate having a coating of 1-amino-2-(4-[1,1,3,3-tetramethyl-butyl]-phenoxy)-4-hydroxy-AQ.
Claim 7
Dependent Claim
89 words
A thermal transfer sheet comprising a substrate having a coating comprising a mixture of at least two dyes of the formula: wherein X is OH or NH 2 Y is is C 1-12 -alkyl or a group of the formula: wherein R 3 is H or C 1-12 -alkyl; R4 is H or C 1-4 -alkyl; n is 0 or 1; and Rings A & B are optionally substituted in the free positions by non-ionic groups; provided that at least one components is a dye according to Claim 1.
Claim 8
Dependent Claim
15 words
A thermal transfer sheet according to Claim 6 wherein one of the dyes is 1-amino-2-(4-[1,1,3,3-tetramethylbutyl]-phenoxy)-4-hydroxy-AQ.
Claim 9
Dependent Claim
71 words
A mixture of dyes comprising at least two dyes of the formula: wherein R3 is H or C 1-12 -alkyl; R 4 is H or C 1-4 -alkyl; and Rings A & B are optionally substituted in the free positions by non-ionic groups; provided that in at least one component R 3 is C 5-12 -alkyl and in at least one other component R 3 is H or C 1-4 -alkyl.
Claim 10
Dependent Claim
71 words
A mixture of dyes comprising at least two dyes of the formula: wherein R3 is H or C 1-12 -alkyl; R 4 is H or C 1-4 -alkyl; and Rings A & B are optionally substituted in the free positions by non-ionic groups; provided that in at least one component R 3 is C 5-12 -alkyl and in at least one other component R 3 is H or C 1-4 -alkyl.
Claim 11
Dependent Claim
15 words
A mixture of dyes according to Claim 7 wherein one of the dyes is 1-amino-2-(4-[1,1,3,3-tetramethylbutyl]-phenoxy)-4-hydroxy-AQ.
Claim 12
Dependent Claim
8 words
A mixture of the dyes 1-amino-2-(4-[1,1,3,3-tetramethylbutyl]-phenoxy)-4-hydroxy-AQ and l-amino-2-phenoxy-4-hydroxy-AQ.
Claim 13
Dependent Claim
8 words
A mixture of the dyes 1-amino-2-(4-[1,1,3,3-tetramethylbutyl]-phenoxy)-4-hydroxy-AQ and l-amino-2-phenoxy-4-hydroxy-AQ.
Claim 14
Dependent Claim
68 words
A transfer printing process which comprises contacting a transfer sheet according to Claim 1 or Claim 5 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 whereby dye in the heated areas of the transfer sheet may be selectively transferred to the receiver sheet.
References Cited (Backward Citations)
No citation records indexed.
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