US4839258A
Expired / Lapsed
US
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Super-high contrast negative type photographic material containing hydrazine and a reductone
Assignee: Fujifilm Holdings Corp
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Filing: 1987-04-08
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Granted: 1989-06-13
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Expires: 2007-04-08
Abstract
Abstract A super-high contrast negative type silver halide photographic material is disclosed, comprising a support having provided thereon at least one silver halide emulsion layer, said emulsion layer or layers or other hydrophilic colloidal layer or layers containing a hydrazine derivative, wherein said photographic material further contains a compound selected from reductones and at least one compound represented by formula (I) or (II) ##STR1## wherein X 1 represents a halogen atom, an N-methylolamino group, or a glycidoxy group; Y 1 and Z 1 each represents a hydrogen atom, a halogen atom, a hydroxyl group, --OM (wherein M represents an alkali metal ion), a substituted or unsubstituted amino group, an alkyl ether group, a phenyl ether group, an alkyl thioether group, a phenyl thioether group, a sulfonamide group, or an alkylsulfonamide group. The photographic material exhibits high sensitivity and high contrast without forming black spots, even when processed with a stable developer, and also exhibits high mechanical film strength.
Inventors
- 👤 Kazunobu Katoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:09
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/061; Y; Y10; Y10S; Y10S430/00; Y10S430/15
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
128 words
A super-high contrast negative type silver halide photographic material comprising a support having provided thereon at least one silver halide emulsion layer, said emulsion layer or layers or other hydrophilic colloidal layer or layers containing a hydrazine derivative, wherein said photographic material further contains a compound selected from reductones and at least one compound represented by formula (I) or (II) ##STR13## wherein X 1 represents a halogen atom, an N-methylolamino group, or a glycidoxy group; Y 1 and Z 1 each represents a hydrogen atom, a halogen atom, a hydroxyl group, --OM (wherein M represents an alkali metal ion), a substituted or unsubstituted amino group, an alkyl ether group, a phenyl ether group, an alkyl thioether group, a phenyl thioether group, a sulfonamide group, or an alkylsulfonamide group.
Claim 2
Dependent Claim
128 words
A super-high contrast negative type silver halide photographic material comprising a support having provided thereon at least one silver halide emulsion layer, said emulsion layer or layers or other hydrophilic colloidal layer or layers containing a hydrazine derivative, wherein said photographic material further contains a compound selected from reductones and at least one compound represented by formula (I) or (II) ##STR13## wherein X 1 represents a halogen atom, an N-methylolamino group, or a glycidoxy group; Y 1 and Z 1 each represents a hydrogen atom, a halogen atom, a hydroxyl group, --OM (wherein M represents an alkali metal ion), a substituted or unsubstituted amino group, an alkyl ether group, a phenyl ether group, an alkyl thioether group, a phenyl thioether group, a sulfonamide group, or an alkylsulfonamide group.
Claim 3
Dependent Claim
25 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein X 1 in formula (I) or (II) is a chlorine atom.
Claim 4
Dependent Claim
43 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein Y 1 and Z 1 in formula (II) each represents -OM (wherein M represents an alkali metal ion), or an alkylamino or arylamino group substituted with a water-soluble group.
Claim 5
Dependent Claim
30 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein said compound is a compound represented by formula (I), selected from the group consisting of ##STR14##
Claim 6
Dependent Claim
44 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein said compound represented by formula (I) or (II) is present in an amount of from 0.5×10 -3 mol to 100×10 -3 mol per 100 g of gelatin in the layer.
Claim 7
Dependent Claim
44 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein said compound represented by formula (I) or (II) is present in an amount of from 1.0×10 -3 mol to 30×10 -3 mol per 100 g of gelatin in the layer.
Claim 8
Dependent Claim
44 words
A super-high contrast negative type silver halide photographic material as in claim 4, wherein said compound represented by formula (I) or (II) is present in an amount of from 0.5×10 -3 mol to 100×10 -3 mol per 100 g of gelatin in the layer.
Claim 9
Dependent Claim
44 words
A super-high contrast negative type silver halide photographic material as in claim 4, wherein said compound represented by formula (I) or (II) is present in an amount of from 1.0×10 -3 mol to 30×10 -3 mol per 100 g of gelatin in the layer.
Claim 10
Dependent Claim
38 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein said hydrazine derivative is represented by formula (III) R.sub.0 --NHNH--CHO (III) wherein R 0 represents an aliphatic group or an aromatic or heterocyclic group.
Claim 11
Dependent Claim
23 words
A super-high contrast negative type silver halide photographic material as in claim 9, wherein R 0 represents a substituted or unsubstituted aryl group.
Claim 12
Dependent Claim
25 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein said hydrazine derivative is present in a silver halide emulsion layer.
Claim 13
Dependent Claim
35 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein said hydrazine derivative is present in an amount of from 1×10 -6 to 1×10 -1 mol per mol of silver halide.
Claim 14
Dependent Claim
100 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein said reductones are selected from 3-carbonyl-endiol compounds represented by formula (IV) ##STR15## wherein R 1 and R 2 each represents a substituted or unsubstituted alkyl group, an allyl group, or a substituted or unsubstituted aryl group, or R 1 and R 2 together to form a carbon-carbon linkage or a heterocyclic ring, or precursors thereof, amino-reductones represented by formula (V) ##STR16## wherein R 1 is the same as defined above, and imino-reductones represented by formula (VI) ##STR17## wherein R 1 is the same as defined above.
Claim 15
Dependent Claim
33 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein said reductones are present in an amount of from 1.0×10 -6 mol/m 2 to 1.0×10 -3 mol/m 2 .
Claim 16
Dependent Claim
33 words
A super-high contrast negative type silver halide photographic material as in claim 14, wherein said reductones are present in an amount of from 1.0×10 -5 mol/m 2 to 5.0×10 -4 mol/m 2 .
Claim 17
Dependent Claim
38 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein said material further contains a compound represented by formula (VII) CH.sub.2 ═CHSO.sub.2 --R.sub.3 --SO.sub.2 CH═CH.sub.2 (VII) wherein R 3 represents a divalent linking group.
Claim 18
Dependent Claim
42 words
A super-high contrast negative type silver halide photographic material as in claim 16, wherein said compound represented by formula (VII) is present in an amount of from 1.0×10 -3 mol to 100×10 -3 mol per 100 g of gelatin in the layer.
Claim 19
Dependent Claim
108 words
A super-high contrast negative type silver halide photographic material as in claim 1, wherein said material contains the compound represented by formula (I) or (II) in an amount of from 1×10 -3 to 10×10 -3 mol per 100 g of gelatin in the layer, the hydrazine derivative represented by formula (III) in an amount of from 1×10 -6 to 1×10 -1 mol per mol of silver halide, the reductones in an amount of from 1.0×10 -6 to 1.0×10 -3 mol/m 2 , and a compound represented by formula (VII) is an amount of from 3.0×10 -3 to 20×10 -3 mol per 100 g of gelatin in the layer.
References Cited (Backward Citations)
US4053318A
Cited
US4243739A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |