US5204214A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic material
Assignee: Fujifilm Corp
•
Filing: 1991-07-17
•
Granted: 1993-04-20
•
Expires: 2011-07-17
Abstract
Abstract A silver halide photographic material which provides a negative image is disclosed. The photographic material contains a compound represented by formula (I): ##STR1## wherein R represents an aliphatic group, an aromatic group, or a heterocyclic group; and Z represents an atomic group necessary to form a nitrogen-containing heterocyclic aromatic group, and provides a negative image having high contract, high sensitivity, an satisfactory dot image quality.
Inventors
- 👤 Hisashi Okamura
- 👤 Hiroshi Kawamoto
- 👤 Kazuhiko Matsumoto
- 👤 Kazunobu Katoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:55
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/061
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
112 words
A silver halide photographic material comprising a silver halide emulsion and a compound represented by formula (I): ##STR57## wherein R represents an aliphatic group, an aromatic group, or a heterocyclic group; and Z represents an atomic group necessary to form a nitrogen-containing heterocyclic aromatic group, said heterocyclic ring being selected from the group consisting of pyrrole, imidazole, pyrazole, 1,2,3-triazole, 1,2,4-triazole, tetrazole, 2-thioxathiazoline, 2-oxathiazoline, 2-thioxaoxazoline, 2-oxazoline-5-thione, 1,2-thiazoline-5-thione, 1,2-oxazoline-5-one, 1,2-thiozoline-5-one, 5-thioxatetrazoline, 2-thioxa-1,3,4-thiadiazoline, 2-oxa-1,3,4-thiadiazoline, 2-thioxa-1,3,4-oxadiazoline, 2-oxa-1,3,4-oxadiazoline, 3-thioxa-1,2,4-triazoline, 2-thioxadihydropyridine, 2-oxadihydropyridine, isoindole, indole, indazole, benzimidazole, 2-thioxabenzimidazole, 2-oxabenzimidazole, benzoxazoline-2-thione, benzooxazoline-2one, benzothiazoline-2-thione, benzothiazoline-2-one, purine, pyrazolopyridines, and pyrazolopyrimidines, and wherein R contains a ballast group or a group which is capable of accelerating adsorption of the compound onto silver halide.
Claim 2
Dependent Claim
112 words
A silver halide photographic material comprising a silver halide emulsion and a compound represented by formula (I): ##STR57## wherein R represents an aliphatic group, an aromatic group, or a heterocyclic group; and Z represents an atomic group necessary to form a nitrogen-containing heterocyclic aromatic group, said heterocyclic ring being selected from the group consisting of pyrrole, imidazole, pyrazole, 1,2,3-triazole, 1,2,4-triazole, tetrazole, 2-thioxathiazoline, 2-oxathiazoline, 2-thioxaoxazoline, 2-oxazoline-5-thione, 1,2-thiazoline-5-thione, 1,2-oxazoline-5-one, 1,2-thiozoline-5-one, 5-thioxatetrazoline, 2-thioxa-1,3,4-thiadiazoline, 2-oxa-1,3,4-thiadiazoline, 2-thioxa-1,3,4-oxadiazoline, 2-oxa-1,3,4-oxadiazoline, 3-thioxa-1,2,4-triazoline, 2-thioxadihydropyridine, 2-oxadihydropyridine, isoindole, indole, indazole, benzimidazole, 2-thioxabenzimidazole, 2-oxabenzimidazole, benzoxazoline-2-thione, benzooxazoline-2one, benzothiazoline-2-thione, benzothiazoline-2-one, purine, pyrazolopyridines, and pyrazolopyrimidines, and wherein R contains a ballast group or a group which is capable of accelerating adsorption of the compound onto silver halide.
Claim 3
Dependent Claim
36 words
A silver halide photographic material as claimed in claim 1, wherein the nitrogen-containing heterocyclic aromatic group represented by ##STR58## in formula (I) or any substituent on said group is substituted with at least one nitro group.
Claim 4
Dependent Claim
120 words
A silver halide photographic material as in claim 1, wherein the material also contains a hydrazine compound represented by the general formula (III): ##STR59## wherein R 31 represents an aliphatic group or an aromatic group; R 32 represents a hydrogen atom, an alkyl group, an aryl group, an alkoxy group, an aryloxy group, an amino group, a carbamoyl group or an oxycarbonyl group; G 1 represents a carbonyl group, a sulfonyl group, a sulfoxy group, a ##STR60## group or an iminoethylene group, and A 1 and A 2 represent hyirogen atoms, or one represents a hydrogen atom and the other represents a substituted or unsubstituted alkylsulfonyl group, a substituted or unsubstituted arylsulfonyl group or a substituted or unsubstituted acyl group.
Claim 5
Dependent Claim
16 words
A silver halide photographic material as in claim 3, wherein R 31 represents an aryl group.
Claim 6
Dependent Claim
18 words
A silver halide photographic material as in claim 3, wherein A 1 and A 2 represent hydrogen atoms.
Claim 7
Dependent Claim
16 words
A silver halide photographic material as in claim 3, wherein G 1 represents a carbonyl group.
Claim 8
Dependent Claim
19 words
A silver halide photographic material as in claim 3, wherein the photographic material also contains a negatively working emulsion.
Claim 9
Dependent Claim
45 words
A silver halide photographic material as in claim 3, wherein the compound represented by formula (I) is contained in an internal latent image type silver halide emulsion layer or in a hydrophilic colloidal layer adjacent to an internal latent image type silver halide emulsion layer.
Claim 10
Dependent Claim
15 words
A silver halide photographic material as in claim 1, wherein R represents an aromatic group.
Claim 11
Dependent Claim
24 words
A silver halide photographic material as in claim 1, wherein the group represented by R contains a group which accelerates adsorption onto silver halide.
Claim 12
Dependent Claim
19 words
A silver halide photographic material as in claim 1, wherein the group represented by R contains a ballast group.
Claim 13
Dependent Claim
44 words
A silver halide photographic material as in claim 1, wherein the nitrogen-containing heterocyclic aromatic ring formed by ##STR61## in formula (I) is selected from the group consisting of pyrrole, imidazole, pyrazole, triazole, tetrazole, 2-thioxathiazoline, 2-thioxaoxazoline, indole, indazole, benzimidazole, 2-thioxa-1,3,4-thiadiazoline, 5-thioxatetrazoline, 2-thioxa-1,3,4-oxadiazoline, 3-thioxa-1,2,4-trioazoline, and pyrazolopyridines.
Claim 14
Dependent Claim
37 words
A silver halide photographic material as in claim 1, wherein the nitrogen-containing heterocyclic aromatic ring formed by ##STR62## in formula (I) is a ring containing pyrazole nucleus selected from the group consisting of pyrazole, indazole and pyrazolopyridine.
Claim 15
Dependent Claim
33 words
A silver halide photographic material as in claim 1, wherein the nitrogen-containing heterocyclic ring formed by Z and N in formula (I) is pyrazole, indole, indazole, benzimidazole, 2-thioxabenzimidazole, benzoxazoline-2-thione, benzothiazoline, or a pyrazolopyridine.
References Cited (Backward Citations)
US4478928A
Cited
US4737442A
Cited
US4816373A
Cited
US4772531A
Cited
US4684604A
Cited
EP0286062A1
Cited
US5061594A
Cited
US5085971A
Cited
US5028510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-04-19 | 1996-10-19 | 1997-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-04-19 | 2000-10-19 | 2001-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-04-19 | 2004-10-19 | 2005-04-20 | $7700.00 | Window Closed / Lapsed |