Patent US4816435A successfully refreshed from Google Patents.
US4816435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transfer sheet for thermal transfer recording
Assignee: Mitsubishi Chemical Corp
•
Filing: 1987-05-27
•
Granted: 1989-03-28
•
Expires: 2007-05-27
Abstract
Abstract A transfer sheet for thermal transfer recording system having a color material layer containing sublimable dyes on one surface of a base film, and said color material layer is a black color material layer containing sublimable dyes represented by following formulae (I), (II) and (III); <IMAGE> (I) <IMAGE> (II) <IMAGE> (III) in the above formulae, X and Y represent a hydrogen atom or a methyl group; -A- represents -CO-, -COO-, or -SO2-; and R1, R2, R3, R4, R5, R6, and R7 represent a hydrogen atom or a substituted or unsubstituted alkyl group.
Inventors
- 👤 Yukichi Murata
- 👤 Shuichi Maeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:06
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/26; B41M5/382; B41M5/385; B41M5/3858; B41M5/3854; B41M5/39; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/24975; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31721; Y10T428/31786
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
101 words
A transfer sheet for thermal transfer recording system having a color material layer containing sublimable dyes on one surface of a base film, said color material layer being a black color material layer containing sublimable dyes represented by following formulae (I), (II) and (III); ##STR85## in the above formulae, X and Y represent a hydrogen atom or a methyl group; --A-- represents --CO--, --COO--, or --SO 2 --; and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , and R 7 represent a hydrogen atom or a substituted or unsubstituted alkyl group.
Claim 2
Dependent Claim
101 words
A transfer sheet for thermal transfer recording system having a color material layer containing sublimable dyes on one surface of a base film, said color material layer being a black color material layer containing sublimable dyes represented by following formulae (I), (II) and (III); ##STR85## in the above formulae, X and Y represent a hydrogen atom or a methyl group; --A-- represents --CO--, --COO--, or --SO 2 --; and R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , and R 7 represent a hydrogen atom or a substituted or unsubstituted alkyl group.
Claim 3
Dependent Claim
46 words
The transfer sheet as claimed in claim 1, wherein R 1 to R 7 of formulae (I), (II), and (III) are a substituted or unsubstituted alkyl group having from 1 to 6 carbon atom or a phenyl-subsituted alkyl group having from 7 to 9 carbon atoms.
Claim 4
Dependent Claim
65 words
The transfer sheet as claimed in claim 1, wherein R 1 and R 2 in formula II) are an alkyl group having from 1 to 4 carbon atoms, an alkyl group having from 1 to 4 carbon atoms substituted by at least one of --OH, --CH 3 , ##STR86## and --OCOCH 3 , or a phenyl-substituted alkyl group having from 7 to 9 carbon atoms.
Claim 5
Dependent Claim
62 words
The transfer sheet as claimed in claim 1, wherein R 3 and R 4 in formula (II) are an alkyl group having from 1 to 4 carbon atoms, an alkyl group having from 1 to 4 carbon atoms substituted by at least one of --OCH 3 , --OH, and --CN, or a phenyl-substituted alkyl group having from 7 to 9 carbon atoms.
Claim 6
Dependent Claim
86 words
The transfer sheet as claimed in claim 1, wherein R 5 and R 6 in formula (III) are an alkyl group having from 1 to 4 carbon atoms, an alkyl group having from 1 to 4 carbon atoms substituted by --OH, or a phenyl-substituted alkyl group having from 7 to 9 carbon atoms and R 7 in formula (III) is an alkyl group having from 1 to 4 carbon atoms or an alkyl group having from 1 to 4 carbon atoms substituted by --OCH 3 .
Claim 7
Dependent Claim
60 words
The transfer sheet as claimed in claim 1, wherein the color material layer contains the dye of formula (I) in an amount of from 10 to 50% by weight, the dye of formula (II) in an amount of from 10 to 50% by weight, and the dye of formula (III) in an amount of from 30 to 80% by weight.
Claim 8
Dependent Claim
60 words
The transfer sheet as claimed in claim 1, wherein the color material layer contain the dye of formula (I) in an amount of from 15 to 35% by weight, the dye of formula (II) in an amount of from 10 to 25% by weight, and the dye of formula (III) in an amount of from 45 to 65% by weight.
Claim 9
Dependent Claim
84 words
The transfer sheet as claimed in claim 1, wherein in formulae (I), (II), and (III), X and Y are a methyl group; R 1 , R 3 , R 5 , R 6 , and R 7 are an alkyl group having from 1 to 4 carbon atoms; R 2 is a phenyl-subsituted alkyl group having from 7 to 9 carbon atoms; R 4 is an alkyl group having from 1 to 4 carbon atoms substituted by a methoxy group; and --A-- is --CO--.
Claim 10
Dependent Claim
29 words
The transfer sheet as claimed in claim 1, wherein the color material layer contains the following dyes ##STR87## as the dyes shown by formulae (I), (II), and (III), respectively.
Claim 11
Dependent Claim
21 words
The transfer sheet as claimed in claim 1, wherein the base film is a polyimide film or a polyethylene terephthalate film.
Claim 12
Dependent Claim
22 words
The transfer sheet as claimed in claim 1, wherein the thickness of the base film is from 3 μm to 50 μm.
Claim 13
Dependent Claim
23 words
The transfer sheet as claimed in claim 1, wherein the thickness of the color material layer is from 0.1 μm to 5 μm.
References Cited (Backward Citations)
US4614521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-27 | 1992-09-26 | 1993-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-27 | 1996-09-26 | 1997-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-27 | 2000-09-26 | 2001-03-28 | $7700.00 | Window Closed / Lapsed |