Patent EP0409665A1 successfully refreshed from Google Patents.
EP0409665A1
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Silver halide photographic material provided with antistatic coating
Assignee: Konica Minolta Inc
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Filing: 1990-07-20
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Granted: —
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Expires: 2010-07-20
Abstract
Abstract A silver halide photographic material having at least a light-sensitive emulsion layer and an antistatic containing (1) a water-soluble conductive polymer, (2) hydrophobic polymer particles and (3) a curing agent on a plastic film support, wherein said hydrophobic polymer particles contain an acrylamide group or contain styrene and an alkyl acrylate and/or an alkyl methacryate that have 1 - 12 carbon atoms, and form a stable dispersion with the aid of a nonionic surfactant having 3 or more alkylene oxide chains.
Inventors
- 👤 Takeshi Habu
- 👤 Yasuhiko Takamuki
- 👤 Taketoshi Yamada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 01:25
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/061; G03C1/04; G03C1/067; G03C1/76; G03C1/85; G03C1/89; G03C1/895; G03C1/95
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
85 words
In a silver halide photographic material having at least a light-sensitive emulsion layer and an antistatic coating containing (1) a water-soluble conductive polymer, (2) hydrophobic polymer particles and (3) a curing agent on a plastic film support, the improvement wherein said hydrophobic polymer particles contain an acrylamide group or contain styrene and an alkyl acrylate and/or an alkyl methacrylate that have 1 - 12 carbon atoms, and form a stable dispersion with the aid of a nonionic surfactant having 3 or more alkylene oxide chains.
Claim 2
Dependent Claim
85 words
In a silver halide photographic material having at least a light-sensitive emulsion layer and an antistatic coating containing (1) a water-soluble conductive polymer, (2) hydrophobic polymer particles and (3) a curing agent on a plastic film support, the improvement wherein said hydrophobic polymer particles contain an acrylamide group or contain styrene and an alkyl acrylate and/or an alkyl methacrylate that have 1 - 12 carbon atoms, and form a stable dispersion with the aid of a nonionic surfactant having 3 or more alkylene oxide chains.
Claim 3
Dependent Claim
52 words
A silver halide photographic material according to claim 1 wherein said water-soluble conductive polymer has at least one conductive group selected from the group consisting of a sulfonic acid groups, a sulfate ester group, a quaternary ammonium salt group, a tertiary ammonium salt group, a carboxyl group and a polyethylene oxide group.
Claim 4
Dependent Claim
40 words
A silver halide photographic material according to claim 1 wherein said water-soluble conductive polymer has at least one conductive group selected from the group consisting of a sulfonic acid group, a sulfate ester group and a quaternary ammonium salt group.
Claim 5
Dependent Claim
30 words
A silver halide photographic material according to claim 3 wherein said conductive group is contained in an amount of at least 5 wt% per molecule of the water-soluble conductive polymer.
Claim 6
Dependent Claim
55 words
A silver halide photographic material according to claim 3 wherein said water-soluble conductive polymer has at least one group selected from the group consisting of a carboxyl group, a hydroxyl group, an amino group, an epoxy group, an aziridine group, an active methylene group, a sulfinic acid group, a vinylsulfone group and an aldehyde group.
Claim 7
Dependent Claim
68 words
A silver halide photographic material according to claim 5 wherein said at least one group selected from the group consisting of a carboxyl group, a hydroxyl group, an amino group, an epoxy group, an aziridine group, an active methylene group, a sulfinic acid group, a vinylsulfone group and an aldehyde group is contained in an amount of at least 5 wt% per molecule of the water-soluble conductive polymer.
Claim 8
Dependent Claim
22 words
A silver halide photographic material according to claim 1 wherein said water-soluble conductive polymer has a molecular weight of 3,000 - 100,000.
Claim 9
Dependent Claim
24 words
A silver halide photographic material according to claim 1 wherein said water-soluble conductive polymer is contained in an amount of 0.01 - 10 g/m².
Claim 10
Dependent Claim
27 words
A silver halide photographic material according to claim 1 wherein said hydrophobic polymer particles contain at least 0.1 mol% of an acrylamide derivative and/or a methacrylamide derivative.
Claim 11
Dependent Claim
31 words
A silver halide photographic material according to claim 1 wherein said hydrophobic polymer particles contain at least 10 mol% of a styrene derivative and an alkyl acrylate and/or an alkyl methacrylate.
Claim 12
Dependent Claim
22 words
A silver halide photographic material according to claim 1 wherein said hydrophobic polymer particles have a molecular weight of at least 3,000.
Claim 13
Dependent Claim
28 words
A silver halide photographic material according to claim 1 wherein said hydrophobic polymer particles are used in an amount in the range of from 0.1 to 10 g/m².
Claim 14
Dependent Claim
17 words
A silver halide photographic material according to claim 1 wherein said curing agent is a polyfunctional aziridine.
Claim 15
Dependent Claim
17 words
A silver halide photographic material according to claim 13 wherein said polyfunctional aziridine is bi- or trifunctional.
Claim 16
Dependent Claim
22 words
A silver halide photographic material according to claim 14 wherein said polyfunctional aziridine has a molecular weight of no more than 600.
Claim 17
Dependent Claim
26 words
A silver halide photographic material according to claim 1 wherein said curing agent is used in amount in the range of from 0.01 to 10 g/m².
Claim 18
Dependent Claim
26 words
A silver halide photographic material according to claim 1 wherein said nonionic surfactant is a compound containing at least three polyalkylene oxide chains in the molecule.
Claim 19
Dependent Claim
27 words
A silver halide photographic material according to claim 1 wherein said nonionic surfactant is used in an amount in the range of from 0.0001 to 0.1 g/m².
Claim 20
Dependent Claim
20 words
A silver halide photographic material according to claim 1 wherein said light-sensitive emulsion layer contains a tetrazolium or hydrazine compound.
Claim 21
Dependent Claim
46 words
A silver halide photographic material according to claim 19 wherein said tetrazolium compound is represented by the following general formula (T): where R₁, R₂ and R₃ are each independently a phenyl group or a substituted phenyl group; X ⊖ is an anion; and n is 2.
Claim 22
Dependent Claim
33 words
A silver halide photographic material according to claim 20 wherein said tetrazolium compound is used in an amount in the range of from 1 mg to 10 g per mole of silver halide.
Claim 23
Dependent Claim
67 words
A silver halide photographic material according to claim 19 wherein said hydrazine compound is represented by the following general formula (H): where R₁ is a monovalent organic residue; R₂ is a hydrogen atom or a monovalent organic residue; Q₁ and Q₂ are each a hydrogen atom, an optionally substituted alkylsulfonyl group, or an optionally substituted arylsulfonyl group; and X₁ is an oxygen atom or a sulfur atom.
Claim 24
Dependent Claim
32 words
A silver halide photographic material according to claim 19 wherein said hydrazine compound is used in an amount in the range of from 10⁻⁵ to 10⁻¹ mole per mole of silver halide.
Claim 25
Dependent Claim
30 words
A silver halide photographic material according to claim 1 wherein said plastic film support is made of polyethylene terephthalate or cellulose triacetate that transmits at least 90% of visible light.
References Cited (Backward Citations)
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