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EP0143436A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Silver halide photographic light-sensitive material

Assignee: Fujifilm Holdings Corp
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Filing: 1984-11-22
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Granted: —
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Expires: 2004-11-22
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Abstract

Abstract A silver halide photographic light-sensitive material is described, comprising a support, at least one light-sensitive silver halide emulsion layer on the support, and at least one light-insensitive top layer provided on the emulsion layer, wherein at least one of the emulsion layer and other constituent layers contains a compound represented by the general formula (I) wherein R is a substituted or unsubstituted aryl group, R 2 is a hydrogen atom, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted aryloxy group, and G is a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, or an N-substituted or unsubstituted imino group and wherein said at least one light-insensitive top layer is hardened so as to have a melting time at least 50 seconds longer than that of the emulsion layer. This material enables the formation of a negative image having super contrast with a stable processing solution.

Inventors

  • 👤 Yasuo Kasama
  • 👤 Nobuaki Inoue

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 23:01
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/30; G03C1/061; Y; Y10; Y10S; Y10S430/00; Y10S430/15; Y10S430/162

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 144 words
A silver halide photographic light-sensitive material comprising a support, at least one light-sensitive silver halide emulsion layer on the support, and at least one light-insensitive top layer provided on the emulsion layer, wherein at least one of the emulsion layer and other constituent layers contains a compound represented by the general formula (I) wherein R is a substituted or unsubstituted aryl group, R 2 is a hydrogen atom, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted aryloxy group, and G is a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, or an N-substituted or unsubstituted imino group and wherein said at least one light-insensitive top layer is hardened so as to have a melting time at least 50 seconds longer than that of the emulsion layer.
Claim 2
Dependent Claim 144 words
A silver halide photographic light-sensitive material comprising a support, at least one light-sensitive silver halide emulsion layer on the support, and at least one light-insensitive top layer provided on the emulsion layer, wherein at least one of the emulsion layer and other constituent layers contains a compound represented by the general formula (I) wherein R is a substituted or unsubstituted aryl group, R 2 is a hydrogen atom, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted aryloxy group, and G is a carbonyl group, a sulfonyl group, a sulfoxy group, a phosphoryl group, or an N-substituted or unsubstituted imino group and wherein said at least one light-insensitive top layer is hardened so as to have a melting time at least 50 seconds longer than that of the emulsion layer.
Claim 3
Dependent Claim 31 words
The material as claimed in Claim 1, wherein the at least one light-insensitive top layer having a greater melting time than the emulsion layer is hardened with a polymeric hardening agent.
Claim 4
Dependent Claim 29 words
The material as claimed in Claim 1, wherein the emulsion layer contains silver halide grains prepared in the presence of a rhodium salt at grain formation or physical ripening.
Claim 5
Dependent Claim 29 words
The material as claimed in Claim 2, wherein the emulsion layer contains silver halide grains prepared in the presence of a rhodium salt at grain formation or physical ripening.
Claim 6
Dependent Claim 35 words
The material as claimed in Claim 1, wherein the at least one light-insensitive top layer is hardened so as to have a melting time at least 100 seconds longer than that of the emulsion layer.
Claim 7
Dependent Claim 21 words
The material as claimed in Claim 1, wherein R in formula (I) is a single or double-ring aryl or heteroaryl group.
Claim 8
Dependent Claim 65 words
The material as claimed in Claim 1, wherein R 2 is a single or double-ring aryl group, optionally substituted with halogen atoms, cyano, carboxyl or sulfo groups, an alkyl group with 1 to 4 carbon atoms, optionally substituted with a halogen atom, a cyano, carboxyl, sulfo, alkoxy or phenyl group, an alkoxy group having 1 to 8 carbon atoms or a phenoxy or 4-chlorophenoxy group.

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