US5284732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic material
Assignee: Fujifilm Holdings Corp
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Filing: 1993-06-09
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Granted: 1994-02-08
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Expires: 2013-06-09
Abstract
Abstract A silver halide light-sensitive material containing a hydrazine compound represented by formula (I): ##STR1## wherein L 1 represents a single bond, --O--, --S--, --NR 6 --, --CO--, SO 2 --, --P(O) (G 2 R 6 )-- or a combination thereof; L 2 represents --SO 2 NR 6 --, --NR 6 SO 2 NR 6 --, --CONR 6 --, --NR 6 CONR 6 -- or --G 2 P(O) (G 2 R 6 )NR 6 --; G 1 represents --CO--, --SO 2 --, --SO--, --COCO--, a thiocarbonyl group, an iminomethylene group or --P(O) (G 2 R 6 )--; G 2 represents a single bond, --O-- or --NR 6 --; R 1 represents an aliphatic group or an aromatic group; R 2 , R 3 , and R 4 each represent a divalent aliphatic group or a divalent aromatic group; R 5 represents a hydrogen atom, an aliphatic group, an aromatic group, an alkoxy group, an aryloxy group or an amino group; R 6 represents a hydrogen atom, an aliphatic group or an aromatic group; m represents 0 or 1; and X - represents a counter anion or a counter anion moiety of an intramolecular salt, as a nucleating agent. The light-sensitive material exhibits high processing stability even in rapid processing to provide a ultrahigh contrast negative image for photomechanical processing.
Inventors
- 👤 Kazumi Nii
- 👤 Toshihide Ezoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:43
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/061
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
199 words
A silver halide light-sensitive material comprising a support and a silver halide emulsion layer and containing a compound represented by formula (I): ##STR12## wherein L 1 represents a single bond, --O--, --S--, --NR 6 --, --CO--, SO 2 --, --P(O) (G 2 R 6 )-- or a combination thereof; L 2 represents --SO 2 NR 6 --, --NR 6 SO 2 NR 6 --, --CONR 6 --, --NR 6 CONR 6 -- or --G 2 R 6 )NR 6 --; G 1 represents --CO--, --SO 2 --, --SO--, --COCO--, a thiocarbonyl group, an iminomethylene group or --P(O) (G 2 R 6 )--; G 2 represents a single bond, --O-- or --NR 6 --; R 1 represents an aliphatic group or an aromatic group; R 2 , R 3 , and R 4 each represent a divalent aliphatic group or a divalent aromatic group; R 5 represents a hydrogen atom, an aliphatic group, an aromatic group, an alkoxy group, an aryloxy group or an amino group; R 6 represents a hydrogen atom, an aliphatic group or an aromatic group; m represents 0 or 1; and X - represents a counter anion or a counter anion moiety of an intramolecular salt.
Claim 2
Dependent Claim
199 words
A silver halide light-sensitive material comprising a support and a silver halide emulsion layer and containing a compound represented by formula (I): ##STR12## wherein L 1 represents a single bond, --O--, --S--, --NR 6 --, --CO--, SO 2 --, --P(O) (G 2 R 6 )-- or a combination thereof; L 2 represents --SO 2 NR 6 --, --NR 6 SO 2 NR 6 --, --CONR 6 --, --NR 6 CONR 6 -- or --G 2 R 6 )NR 6 --; G 1 represents --CO--, --SO 2 --, --SO--, --COCO--, a thiocarbonyl group, an iminomethylene group or --P(O) (G 2 R 6 )--; G 2 represents a single bond, --O-- or --NR 6 --; R 1 represents an aliphatic group or an aromatic group; R 2 , R 3 , and R 4 each represent a divalent aliphatic group or a divalent aromatic group; R 5 represents a hydrogen atom, an aliphatic group, an aromatic group, an alkoxy group, an aryloxy group or an amino group; R 6 represents a hydrogen atom, an aliphatic group or an aromatic group; m represents 0 or 1; and X - represents a counter anion or a counter anion moiety of an intramolecular salt.
Claim 3
Dependent Claim
46 words
The silver halide light-sensitive material as in claim 1, wherein said aliphatic group for R 1 is an alkyl group having from 1 to 20 carbon atoms, and said aromatic group for R 1 is a monocyclic or bicyclic aryl group, or an unsaturated heterocyclic group.
Claim 4
Dependent Claim
61 words
The silver halide light-sensitive material as in claim 1, wherein said divalent aliphatic group for R 2 , R 3 or R 4 is an alkylene group having from 1 to 20 carbon atoms, and said divalent aromatic group for R 2 , R 3 or R 4 is a monocyclic or bicyclic arylene group, or an unsaturated divalent heterocyclic group.
Claim 5
Dependent Claim
44 words
The silver halide light-sensitive material as in claim 1, wherein said L 1 represents --SO 2 NR 6 --, --NR 6 SO 2 NR 6 --, --CONR 6 --, --NR 6 CONR 6 --, or --G 2 (P)O(G 2 R 6 )NR 6 --.
Claim 6
Dependent Claim
41 words
The silver halide light-sensitive material as in claim 1, wherein said aliphatic group for R 5 is an alkyl group having from 1 to 4 carbon atoms, and said aromatic group for R 5 is a monocyclic or bicyclic aryl group.
Claim 7
Dependent Claim
15 words
The silver halide light-sensitive material as in claim 1, wherein said G 1 represents --CO--.
Claim 8
Dependent Claim
33 words
The silver halide light-sensitive material as in claim 1, wherein said compound of formula (I) is contained in an amount of from 1.0×10 -6 to 5×10 -2 mole per mole of silver halide.
Claim 9
Dependent Claim
33 words
The silver halide light-sensitive material as in claim 7, wherein said compound of formula (I) is contained in an amount of from 1.0×10 -5 to 2×10 -2 mole per mole of silver halide.
Claim 10
Dependent Claim
23 words
The silver halide light-sensitive material as in claim 1, wherein said compound of formula (I) is incorporated into the silver halide emulsion layer.
Claim 11
Dependent Claim
29 words
The silver halide light-sensitive material as in claim 1, wherein silver halide grains of the silver halide emulsion layer are silver chloride, silver chlorobromide, silver iodobromide or silver iodochlorobromide.
Claim 12
Dependent Claim
22 words
The silver halide light-sensitive material as in claim 10, wherein said silver halide grains comprise at least 60 mol% of silver chloride.
Claim 13
Dependent Claim
33 words
The silver halide light-sensitive material as in claim 10, wherein said silver halide grains comprise at least 70 mol% of silver bromide with a silver iodide content being not more than 10 mol%.
Claim 14
Dependent Claim
24 words
The silver halide light-sensitive material as in claim 10, wherein said silver halide grins have a mean grain size of 0.7 μm or less.
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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) | 1997-02-07 | 1997-08-09 | 1998-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-07 | 2001-08-09 | 2002-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-07 | 2005-08-09 | 2006-02-08 | $7700.00 | Window Closed / Lapsed |