US4734349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toners and yellow dye compounds used therein
Assignee: Eastman Kodak Co
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Filing: 1986-09-22
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Granted: 1988-03-29
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Expires: 2006-09-22
Abstract
Abstract Novel cyano hydroxy pyridone monoazo yellow dye compounds are useful in thermoplastic electrostatographic toners. They absorb at the desired wavelength, are lightfast and have high tinctorial strength. They resist decomposition, sublimation and bleeding upon being thermally fixed to a substrate. For use in color transparencies, these dyes form a transparent toner image.
Inventors
- 👤 Derek D. Chapman
- 👤 Julie P. Harmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:45
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/09; G03G9/0906; G03G9/091; C; C09; C09B; C09B29/00; C09B29/34; C09B29/36; C09B29/3604; C09B29/3617; C09B29/3621; C09B29/3626; C09B29/363
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
113 words
A powdered toner composition comprising a thermoplastic polymer blended with from about 0.5 to 10 percent by weight of a yellow dye having the formula: ##STR24## wherein: R is --HN--R 3 or --Alk--R 4 , R 1 is the radical of a non-ionic diazo component of the benzene or naphthalene series, R 2 is alkyl of 1 to 10 carbon atoms, phenyl or lower alkyl-substituted phenyl; R 3 is --SO 2 --Ar, --SO 2 --R 5 or ##STR25## R 4 is ##STR26## or --NH--SO 2 --Ar; R 5 is alkyl of 1 to 12 carbon atoms; Alk is alkylene of 1 to 4 carbon atoms; and Ar is phenyl or lower alkyl-substituted phenyl.
Claim 2
Dependent Claim
113 words
A powdered toner composition comprising a thermoplastic polymer blended with from about 0.5 to 10 percent by weight of a yellow dye having the formula: ##STR24## wherein: R is --HN--R 3 or --Alk--R 4 , R 1 is the radical of a non-ionic diazo component of the benzene or naphthalene series, R 2 is alkyl of 1 to 10 carbon atoms, phenyl or lower alkyl-substituted phenyl; R 3 is --SO 2 --Ar, --SO 2 --R 5 or ##STR25## R 4 is ##STR26## or --NH--SO 2 --Ar; R 5 is alkyl of 1 to 12 carbon atoms; Alk is alkylene of 1 to 4 carbon atoms; and Ar is phenyl or lower alkyl-substituted phenyl.
Claim 3
Dependent Claim
22 words
A powdered toner composition according to claim 1 wherein the thermoplastic polymer is a polyester and the dye has the formula: ##STR27##
Claim 4
Dependent Claim
22 words
A powdered toner composition according to claim 1 wherein the thermoplastic polymer is a polyester and the dye has the formula: ##STR28##
Claim 5
Dependent Claim
22 words
A powdered toner composition according to claim 1 wherein the thermoplastic polymer is a polyester and the dye has the formula: ##STR29##
Claim 6
Dependent Claim
22 words
A powdered toner composition according to claim 1 wherein the thermoplastic polymer is a polyester and the dye has the formula: ##STR30##
Claim 7
Dependent Claim
22 words
A powdered toner composition according to claim 1 wherein the thermoplastic polymer is a polyester and the dye has the formula: ##STR31##
Claim 8
Dependent Claim
22 words
A powdered toner composition according to claim 1 wherein the thermoplastic polymer is a polyester and the dye has the formula: ##STR32##
Claim 9
Dependent Claim
18 words
A toner composition according to claim 1 wherein the polymer is also blended with a charge control agent.
Claim 10
Dependent Claim
14 words
A toner composition according to claim 1 wherein the polymer is a thermoplastic polyester.
Claim 11
Dependent Claim
23 words
A toner composition according to claim 1 wherein the polyester is a condensation product of terephthalic acid glutaric acid, propylene glycol and glycerol.
References Cited (Backward Citations)
US4140684A
Cited
US3938992A
Cited
US4139383A
Cited
US4247456A
Cited
US4201710A
Cited
US4359418A
Cited
US4368260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-29 | 1991-09-28 | 1992-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-29 | 1995-09-28 | 1996-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-29 | 1999-09-28 | 2000-03-29 | $7700.00 | Window Closed / Lapsed |