US4859651A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal transfer printing
Assignee: Imperial Chemical Industries Ltd
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Filing: 1988-08-03
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Granted: 1989-08-22
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Expires: 2008-08-03
Abstract
Abstract A thermal transfer printing sheet, suitable for use in a thermal transfer printing process, comprising a substrate having a coating comprising a water-insoluble dye of the formula: <CHEM> wherein R represents the residue of an active methylene compound; X represents hydrogen, halogen or an optionally substituted alkyl, aryl or heteroaryl radical; Y represents cyano, nitro, alkanoyl, aroyl, alklsulphonyl, arylsulphonyl or a group of the formula -COOR<1> or -CONR<2>R<3> wherein R<1> represents a hydrocarbyl radical and each of R<2> and R<3>, independently, represents hydrogen or a hydrocarbyl radical; and E represents the residue of a coupling component.
Inventors
- 👤 Peter Gregory
- 👤 Roy Bradbury
- 👤 Barry H. Meyrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:52
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; B41M5/388; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
98 words
A thermal transfer printing sheet comprising a substrate having a coating comprising a binder and a water-insoluble dye of the formula: ##STR7## wherein R represents the residue of an active methylene compound; X represents hydrogen, halogen or an optionally substituted alkyl, aryl or heteroaryl radical; Y represents cyano, nitro, alkanoyl, aroyl, alkylsulphonyl, arylsulphonyl or a group of the formula --COOR 1 or --CONR 2 R 3 wherein R 1 represents a hydrocarbyl radical and each of R 2 and R 3 , independently, represents hydrogen or a hydrocarbyl radical, and E represents the residue of a coupling component.
Claim 2
Dependent Claim
98 words
A thermal transfer printing sheet comprising a substrate having a coating comprising a binder and a water-insoluble dye of the formula: ##STR7## wherein R represents the residue of an active methylene compound; X represents hydrogen, halogen or an optionally substituted alkyl, aryl or heteroaryl radical; Y represents cyano, nitro, alkanoyl, aroyl, alkylsulphonyl, arylsulphonyl or a group of the formula --COOR 1 or --CONR 2 R 3 wherein R 1 represents a hydrocarbyl radical and each of R 2 and R 3 , independently, represents hydrogen or a hydrocarbyl radical, and E represents the residue of a coupling component.
Claim 3
Dependent Claim
39 words
A thermal transfer printing sheet according to claim 1 wherein, in the dye, R is a group of the formula: ##STR8## wherein Z represents --CN or a group of the formula --COOT in which T is C 1-4 -alkyl.
Claim 4
Dependent Claim
18 words
A thermal transfer printing sheet according to claim 2 wherein, in the dye, X is hydrogen or chlorine.
Claim 5
Dependent Claim
18 words
A thermal transfer printing sheet according to claim 1 wherein, in the dye, X is hydrogen or chlorine.
Claim 6
Dependent Claim
59 words
A thermal transfer printing sheet according to claim 1 wherein, in the dye, E is a radical of the formula: ##STR9## wherein R 4 represents hydrogen or R 5 , R 5 represents an optionally substituted alkyl, cycloalkyl, alkenyl, aralkyl, or aryl radical, and R 6 & R 7 each independently represents hydrogen, halogen, alkyl, alkoxy, alkylsulphonylamino or alkylcarbonylamino.
Claim 7
Dependent Claim
25 words
A thermal transfer printing sheet according to claim 5 wherein each of R 4 and R 5 is C 1-4 -alkyl or C 1-4 -alkylcarbonyloxyethyl.
Claim 8
Dependent Claim
25 words
A thermal transfer printing sheet according to claim 6 wherein R 6 is hydrogen and R 7 is C 1-4 -alkyl or C 1-4 -alkylcarbonylamino.
Claim 9
Dependent Claim
25 words
A thermal transfer printing sheet according to claim 5 wherein R 6 is hydrogen and R 7 is C 1-4 -alkyl or C 1-4 -alkylcarbonylamino.
Claim 10
Dependent Claim
55 words
A thermal transfer printing process which comprises contacting a transfer sheet according to claim 1 with a receiver sheet, so that the dye is in contact with the receiver sheet and selectively heating areas of the transfer sheet whereby dye in the heated areas of the transfer sheet is selectively transferred to the receiver sheet.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-08-21 | 1993-02-20 | 1993-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-21 | 1997-02-20 | 1997-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-21 | 2001-02-20 | 2001-08-22 | $7700.00 | Window Closed / Lapsed |