Patent US5026622A successfully refreshed from Google Patents.
US5026622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic light-sensitive material restrained from producing pin-holes
Assignee: Konica Minolta Inc
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Filing: 1989-10-27
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Granted: 1991-06-25
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Expires: 2009-10-27
Abstract
Abstract A silver halide photographic light-sensitive material is disclosed, which is suitable for contact printing in photomechanical process and capable of being handled in day-light room. The light-sensitive material comprising a support; a silver halide emulsion layer being provided on a surface of the support and containing a tetrazolium compound or a hydrazine compound; a layer containing a tin oxide or an indium oxide and being provided on the surface of the support opposite to the surface the emulsion layer provided thereon; and a layer containing a homopolymer or a copolymer comprising sodium styrenesulfonate, and being provided directly or through an intermediate layer on the surface of the metal oxide containing layer further to the support. The light-sensitive material is excellent in reverse-text quality and inhibited in formation of pin-holes.
Inventors
- 👤 Taketoshi Yamada
- 👤 Takeshi Habu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:42
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/853; G03C1/89; G03C1/005; G03C1/06; G03C1/061
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
98 words
A silver halide photographic light-sensitive material comprising a support, a silver halide emulsion layer being provided on a surface of said support and containing a tetrazolium compound or a hydrazine compound, a metal oxide-containing layer containing a tin oxide or an indium oxide and being provided on the surface of said support opposite to said surface, on which said emulsion layer is provided, and a polymer-containing layer containing a homopolymer or a copolymer comprising sodium styrenesulfonate, and being provided directly or through an intermediate layer on the surface of said metal oxide containing layer further to said support.
Claim 2
Dependent Claim
98 words
A silver halide photographic light-sensitive material comprising a support, a silver halide emulsion layer being provided on a surface of said support and containing a tetrazolium compound or a hydrazine compound, a metal oxide-containing layer containing a tin oxide or an indium oxide and being provided on the surface of said support opposite to said surface, on which said emulsion layer is provided, and a polymer-containing layer containing a homopolymer or a copolymer comprising sodium styrenesulfonate, and being provided directly or through an intermediate layer on the surface of said metal oxide containing layer further to said support.
Claim 3
Dependent Claim
20 words
The material of claim 1, wherein said indium oxide and said tin oxide are stannic oxide and indic oxide, respectively.
Claim 4
Dependent Claim
24 words
The material of claim 1, wherein said tin oxide and said indium oxide are each doped with an antimony atom or a phosphorus atom.
Claim 5
Dependent Claim
31 words
The material of claim 1, wherein said metal oxide-containing layer contains said tin oxide or said indium oxide in an amount of from 0.01 g/m 2 to 10 g/m 2 .
Claim 6
Dependent Claim
31 words
The material of claim 4, wherein said metal oxide-containing layer contains said tin oxide or said indium oxide in an amount of from 0.1 g/m 2 to 1 g/m 2 .
Claim 7
Dependent Claim
25 words
The material of claim 1, wherein said homopolymer and copolymer each comprising sodium styrenesulfonate each has each a molecular weight of from 1,000 to 1,000,000.
Claim 8
Dependent Claim
24 words
The material of claim 6, wherein said homopolymer and copolymer each comprising sodium styrenesulfonate each has a molecular weight of from 5,000 to 1,000,000.
Claim 9
Dependent Claim
27 words
The material of claim 1, wherein said polymer-containing layer contains said homopolymer or copolymer in an amount of from 0.1 g/m 2 to 10 g/m 2 .
Claim 10
Dependent Claim
27 words
The material of claim 1, wherein said polymer-containing layer contains said homopolymer or copolymer in an amount of from 0.2 g/m 2 to 5 g/m 2 .
Claim 11
Dependent Claim
72 words
The material of claim 1, wherein said hydrazine compound is a compound represented by the following Formula Ia: ##STR18## wherein R 1 is a monovalent organic group; R 2 is a hydrogen atom or a monovalent organic group; Q 1 and Q 2 are each a hydrogen atom, a substituted or unsubstituted alkylsulfonyl group or a substituted or unsubstituted arylsulfonyl group; and X 1 is an oxygen atom or a sulfur atom.
Claim 12
Dependent Claim
37 words
The material of claim 1, wherein said hydrazine compound is contained said silver halide emulsion layer in an amount of 10 -5 mol to 10 -1 mol per mol of silver halide contained in said emulsion layer.
Claim 13
Dependent Claim
37 words
The material of claim 11, wherein said hydrazine compound is contained said silver halide emulsion layer in an amount of 10 -4 mol to 10 -2 mol per mol of silver halide contained in said emulsion layer.
Claim 14
Dependent Claim
169 words
The material of claim 1, wherein said tetrazolium compound is a compound represented by the following Formula Ib, Ic or Id: ##STR19## wherein R 1 , R 3 , R 4 , R 5 , R 8 , R 9 , R 10 and R 11 are each an alkyl group, an alkenyl group, an aryl group or a heterocyclic group, provided that these groups are allowed to have a substituent; R 2 , R 6 and R 7 are each an allyl group, a phenyl group, a naphthyl group, a heterocyclic group, an alkyl group, a hydroxyl group, a carboxyl group, an alkoxycarbonyl group, an amino group, a mercapto group, a nitro group or a hydrogen atom, provided that these groups are allowed to have a substituent; D is an aromatic group; E is an alkylene group, an arylene group or a aralkylene group; X.sup.⊖ is an anion and n is an integer of 1 or 2, provided that n is 1 when an intramolecular salt is formed.
Claim 15
Dependent Claim
37 words
The material of claim 1, wherein said tetrazolium compound is contained in said silver halide emulsion layer in an amount of from 10 -6 mol to 10 mol per mol of silver halide contained said emulsion layer.
Claim 16
Dependent Claim
38 words
The material of claim 14, wherein said tetrazolium compound is contained in said silver halide emulsion layer in an amount of from 2×10 -4 mol to 2×10 -1 mol per mol of silver halide contained said emulsion layer.
Claim 17
Dependent Claim
18 words
The material of claim 1, wherein said silver halide photographic material contains a desensitizer and/or a UV absorber.
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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) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |