US4695533A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic light-sensitive material
Assignee: Konica Minolta Inc
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Filing: 1985-09-12
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Granted: 1987-09-22
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Expires: 2005-09-12
Abstract
Abstract This invention relates to a silver halide photographic light-sensitive material in which at least one of the silver halide emulsion layers thereof contains an 1H-pyrazolo[3,2-C]-s-triazole magenta coupler substituted in the third position by a group represented by the following Formula [I]; --R.sub.1 --SO.sub.2 --R.sub.2 Formula [I] wherein R 1 represents an alkylene group having not less than 3 carbon atoms in the straight-chained portion thereof, which is capable of linking a --SO 2 --R 2 to the carbon atom in the third position of the nucleus of the 1H-pyrazolo[3,2-C]-s-triazole; and R 2 represents an aryl group. The silver halide photographic light-sensitive materials of the invention are excellent in light-resistance of magenta dye images and also spectral absorption characteristics.
Inventors
- 👤 Noritaka Nakayama
- 👤 Satoshi Kawakatsu
- 👤 Katsunori Katoh
- 👤 Toshijumi Iijima
- 👤 Kenji Kumashiro
- 👤 Hiroshi Kashiwagi
- 👤 Koichi Hatta
- 👤 Takashi Uchida
- 👤 Hajime Wada
- 👤 Fumio Ishii
- 👤 Satoshi Matsunaga
- 👤 Yasuko Matsubara
- 👤 Kaoru Shinozaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:38
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36; G03C7/38; G03C7/381; G03C7/382; G03C7/3825; G03C7/3835
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
100 words
A silver halide photographic light-sensitive material characteristics a support bearing thereon at least one of silver halide emulsion layers. wherein at least one of said silver halide emulsion layers contains an 1H-pyrazolo[3,2-C-s-triazole magenta coupler substituted in the third position thereof by a group represented by the following Formula [I]; --R.sub.1-- SO.sub.2 --R.sub.2 Formula [I] wherein R 1 represents an alkylene group having not less than 3 carbon atoms in the straight-chained portion thereof, which links said --SO 2 --R 2 the carbon atom in the third position of the nucleus of the 1H-pyrazolo[3,2-C]-s--triazole; and R 2 represents an aryl group.
Claim 2
Dependent Claim
100 words
A silver halide photographic light-sensitive material characteristics a support bearing thereon at least one of silver halide emulsion layers. wherein at least one of said silver halide emulsion layers contains an 1H-pyrazolo[3,2-C-s-triazole magenta coupler substituted in the third position thereof by a group represented by the following Formula [I]; --R.sub.1-- SO.sub.2 --R.sub.2 Formula [I] wherein R 1 represents an alkylene group having not less than 3 carbon atoms in the straight-chained portion thereof, which links said --SO 2 --R 2 the carbon atom in the third position of the nucleus of the 1H-pyrazolo[3,2-C]-s--triazole; and R 2 represents an aryl group.
Claim 3
Dependent Claim
88 words
The silver halide photographic light-sensitive material as claimed in claim 1, wherein said magenta coupler is represented by the following Formula [II]; ##STR14## wherein X represents a group other than hydrogen, Which is to be splitted off through a reaction thereof with the oxidation products of a color developing agent used; --R 1--SO 2 --R 2 is synonymous with the --R 1 --SO 2 --R 2 denoted in the Formula [I]; and R 3 represents an alkyl group. a cycloalkyl group, an aryl group or a heterocyclic ring.
Claim 4
Dependent Claim
32 words
The silver halide photographic light-sensitive material as claimed in claim 2, wherein the alkyl groups each represented by R 3 in the Formula [II] is a t-butyl group or a t-pentyl group.
Claim 5
Dependent Claim
26 words
The silver halide photographic light-sensitive material as claimed in claim 2, wherein the groups each represented by X in the Formula [II] is a halogen atom.
Claim 6
Dependent Claim
28 words
The silver halide photographic light-sensitive material as claimed in claim 2, wherein the aryl groups each represented by R 2 in the Formula [II] is a phenyl group.
Claim 7
Dependent Claim
23 words
The silver halide photographic light-sensitive material as claimed in claim 2, wherein said magenta couplers each is represented by the following formula; ##STR15##
Claim 8
Dependent Claim
23 words
The silver halide photographic light-sensitive material as claimed in claim 2, wherein said magenta couplers each is represented by the following formula; ##STR16##
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) | 1990-09-21 | 1991-03-23 | 1991-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-21 | 1995-03-23 | 1995-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-21 | 1999-03-23 | 1999-09-22 | $7700.00 | Window Closed / Lapsed |