Patent US1330981A successfully refreshed from Google Patents.
US4518682A
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Silver halide photographic light-sensitive material
Assignee: Fujifilm Holdings Corp
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Filing: 1983-09-15
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Granted: 1985-05-21
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Expires: 2003-09-15
Abstract
Abstract A silver halide photographic light-sensitive material is disclosed. The material has improved sensitivity and granularity as well as an increased gradient. Further, the material can be processed by rapid processing methods. The material is comprised of a support having positioned thereon a light-sensitive silver halide emulsion layer and a compound represented by the general formula (I): A-B (I) wherein A is residue of a compound capable of undergoing a coupling reaction with an oxidized primary amine developer, the residue being derived by eliminating a hydrogen atom from an active position of the compound. B is a group capable of being released through a coupling reaction to exert a fogging effect.
Inventors
- 👤 Hidetoshi Kobayashi
- 👤 Toshiro Takahashi
- 👤 Shigeo Hirano
- 👤 Takeshi Hirose
- 👤 Keiichi Adachi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:42
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/305; G03C7/30541; G03C1/00; G03C1/005; G03C1/485; Y; Y10; Y10S; Y10S430/00; Y10S430/156
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
128 words
A silver halide photographic light-sensitive material, comprising: a support having positioned thereon: a light-sensitive silver halide emulsion layer; and a compound represented by the general formula (I): A-B (I) wherein A is a residue of a compound capable of undergoing a coupling reaction with an oxidized primary amine developer, the residue being derived by eliminating a hydrogen atom from an active position of the compound; and B is a group capable of being released through a coupling reaction to exert a fogging effect wherein B is a residue of a thiocarbonyl selected from the group consisting of thioureas, thioamides, thiocarbamates, dithiocarbamates, rhodanines and thiohydantoins or is a residue of a compound containing a functional group or moiety selected from hydrazines, hydrazones, polyamines, enamines, acetylenes, quaternary salts and aldehydes.
Claim 2
Dependent Claim
128 words
A silver halide photographic light-sensitive material, comprising: a support having positioned thereon: a light-sensitive silver halide emulsion layer; and a compound represented by the general formula (I): A-B (I) wherein A is a residue of a compound capable of undergoing a coupling reaction with an oxidized primary amine developer, the residue being derived by eliminating a hydrogen atom from an active position of the compound; and B is a group capable of being released through a coupling reaction to exert a fogging effect wherein B is a residue of a thiocarbonyl selected from the group consisting of thioureas, thioamides, thiocarbamates, dithiocarbamates, rhodanines and thiohydantoins or is a residue of a compound containing a functional group or moiety selected from hydrazines, hydrazones, polyamines, enamines, acetylenes, quaternary salts and aldehydes.
Claim 3
Dependent Claim
31 words
A silver halide photographic light-sensitive material as claimed in claim 1, wherein the residue is a residue of a cyan color-forming coupler selected from the group consisting of phenols and naphthols.
Claim 4
Dependent Claim
36 words
A silver halide photographic light-sensitive material as claimed in claim 1, wherein the residue is a residue of a magenta color-forming coupler selected from the group consisting of 5-pyrazolones, pyrazolobenzimidazoles, cyanoacetylcoumarones, open chain acylacetonitriles and indazolones.
Claim 5
Dependent Claim
31 words
A silver halide photographic light-sensitive material as claimed in claim 1, wherein the residue is a residue of yellow color-forming coupler selected from the group consisting of acylacetamides, dibenzoylmethanes and malondianilides.
Claim 6
Dependent Claim
21 words
A silver halide photographic light-sensitive material as claimed in claim 1, wherein the residue is a residue of a non-color-forming coupler.
Claim 7
Dependent Claim
33 words
A silver halide photographic light-sensitive material as claimed in claim 1, wherein the B is a residue of a thiocarbonyl selected from the group consisting of thioureas, thioamides, thiocarbamates, dithiocarbamates, rhodanines and thiohydantoins.
Claim 8
Dependent Claim
37 words
A silver halide photographic light-sensitive material as claimed in claim 1, wherein the B is a residue of a compound containing a functional group or moiety selected from hydrazines, hydrazones, polyamines, enamines, acetylenes, quaternary salts and aldehydes.
Claim 9
Dependent Claim
37 words
A silver halide photograhic light-sensitive material as claimed in claim 1, wherein the compound of general formula (I) is present in an amount in the range of 2×10 -3 to 5×10 -1 mole per mole of silver.
Claim 10
Dependent Claim
37 words
A silver halide photographic light-sensitive material as claimed in claim 8, wherein the compound of general formula (I) is present in an amount in the range of 1×10 -2 to 5×10 -1 mole per mole of silver.
Claim 11
Dependent Claim
34 words
A silver halide photographic light-sensitive material as claimed in claim 9, wherein the compound of general formula (I) is 0.001 to 100% by mole of the total amount of couplers present in the material.
Claim 12
Dependent Claim
34 words
A silver halide photographic light-sensitive material as claimed in claim 10, wherein the compound of general formula (I) is 0.1 to 10% by mole of the total amount of couplers present in the material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |