US3770451A
Expired / Lapsed
US
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Silver halide emulsions sensitized with dyes containing heterocyclic nitrogen atoms substituted with an -or group
Assignee: Eastman Kodak Co
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Filing: 1971-01-13
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Granted: 1973-11-06
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Expires: 1991-01-13
Abstract
Abstract A class of energy-sensitive compounds containing heterocyclic nitrogen atoms substituted with an -OR group fragment under the influence of various forms of energy to form a dye base, a proton and an aldehyde, these materials being useful in image reproduction.
Inventors
- 👤 P Jenkins
- 👤 D Heseltine
- 👤 J Mee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:41
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/04; B; B41; B41M; B41M5/00; B41M5/26; B41M5/28; B41M5/286; C07D209/00; C07D209/02; C07D209/04; C07D209/08; C07D487/00; C07D487/02; C07D487/04; C09; C09B; C09B23/00; C09B23/02; C09B23/04; C09B23/06; C09B23/08; C09B23/083; C09B23/086; C09B23/10; C09B23/105; C09B23/107; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/485; G03C1/72; G03C1/76; G03C1/825; G03C1/83; G03C1/832; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/09
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
29 words
A photographic element comprising a support having coated thereon at least one layer comprising a light-sensitive silver halide emulsion containing a dye selected from the group consisting of: A.
Claim 2
Dependent Claim
83 words
A negative developing out type photographic silver halide emulsion containing a cyanine dye having a first and second five to six membered nitrogen-containing heterocyclic nucleus joined by a methine linkage; the first of said nuclei being selected from the group consisting of a 1-alkoxypyridine nucleus and a 1-alkoxyquinoline nucleus, the second of said nuclei being selected from the group consisting of a thiazole, an oxazole and an indole nucleus, each of said nuclei being joined at a carbon atom thereof to said linkage.
Claim 3
Dependent Claim
16 words
A negative emulsion in accordance with claim 3 wherein said second nucleus is a benzothiazole nucleus.
Claim 4
Dependent Claim
17 words
A negative emulsion in accordance with claim 3 wherein said second nucleus is a Beta -naphthothioazole nucleus.
Claim 5
Dependent Claim
16 words
A negative emulsion in accordance with claim 3 wherein said second nucleus is a benzoxazole nucleus.
Claim 6
Dependent Claim
16 words
A negative emulsion in accordance with claim 3 wherein said second nucleus is a 3,3-dimethyl-3H-indole nucleus.
Claim 7
Dependent Claim
14 words
A negative emulsion in accordance with claim 3 containing a photographic color forming coupler.
Claim 8
Dependent Claim
17 words
A negative developing out type photographic silver halide emulsion containing at least one dye having the formula:
Claim 9
Dependent Claim
38 words
A negative emulsion in accordance with claim 9 wherein Q1 represents the atoms necessary to complete a nucleus selected from the group consisting of a benzothiazole nucleus, a Beta -naphthothiazole nucleus, a benzoxazole nucleus and a 3,3-dimethyl-3H-indole nucleus.
Claim 10
Dependent Claim
14 words
A negative emulsion in accordance with claim 9 containing a photographic color forming coupler.
Claim 11
Dependent Claim
39 words
A negative developing out type photographic silver halide emulsion containing at least one dye selected from the group consisting of: a. 3''-ethyl-1-methoxy-2-pyridothiacarbocyanine iodide, b. 3''-ethyl-1-methoxy-4'',5''-benzo-2-pyridothiacarbocyanine perchlorate; c. 3-ethyl-1''-methoxyoxa-2''-pyridocarbocyanine perchlorate; d. 1''-methoxy-1,3,3-trimethylindo-2''-pyridocarbocyanine picrate; e. 3''-ethyl-1-methoxy-2-pyridothiacyanine iodide and f. 3''-ethyl-1-methoxy-2-pyridothiadicarbocyanine perchlorate.
Claim 12
Dependent Claim
114 words
A photographic element comprising a support having thereon at least one layer comprising a negative developing out type photographic silver halide emulsion containing a cyanine dye having a first and a second five to six membered nitrogen-containing heterocyclic nucleus joined by a methine linkage; the first of said nuclei being selected from the group consisting of a 1-alkoxypyridyl nucleus and a 1-alkoxyquinolyl nucleus, each of said first nuclei being joined at a carbon atom thereof to said linkage; and said second nucleus being a heterocyclic nucleus selected from the group consisting of a thiazole, an oxazole and an indole nucleus joined at a carbon atom thereof to said linkage, to complete said cyanine dye.
Claim 13
Dependent Claim
30 words
A photographic element comprising a support having thereon at least one layer comprising a negative developing out type photographic silver halide emulsion containing at least one dye having the formula:
References Cited (Backward Citations)
US3532499A
Cited
US3615432A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |