EP0446078A1
Expired / Lapsed
EP
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Silver halide photographic materials
Assignee: Konica Minolta Inc
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Filing: 1991-03-11
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Granted: —
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Expires: 2011-03-11
Abstract
Abstract The improved silver halide photographic material contains a novel nucleating compound that is useful either as a contrast increasing agent in light-sensitive material for use in photochemical processes or as a foggant in direct positive light-sensitive materials. (The remaining space is left blank.)
Inventors
- 👤 Akira C/O Konica Corporation Onodera
- 👤 Yasushi C/O Konica Corporation Usagawa
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 23:39
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/76; C07D213/77; C07C; C07C323/00; C07C323/50; C07C323/51; C07C323/60; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/46; C07D211/56; C07D211/58; C07D307/00; C07D307/02; C07D307/34; C07D307/56; C07D307/66; C07D333/00; C07D333/02; C07D333/04; C07D333/26; C07D333/30; C07D333/36; C07D453/00; C07D453/02; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/061; G03C1/485; G03C1/48538; G03C1/48546; G03C1/48561; C07C2601/00; C07C2601/12; C07C2601/14; Y; Y10; Y10S; Y10S430/00; Y10S430/141
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
121 words
A silver halide photographic material comprising a silver halide emulsion layer, wherein said silver halide photographic material contains a compound represented by the following general formula (I): where R 1 is an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a hetero cyclic ring; R 2 is a hydrogen atom, an alkyl group, an aryl group or a hetero cyclic ring; R is a hydrogen atom or a blocking group; L is an alkylene or alkenylene group; J is a linkage group; X is an aromatic or heterocyclic residue; A and A 2 are each a hydrogen atom, or either one of them is a hydrogen atom and the other is an acyl, sulfonyl or oxalyl group.
Claim 2
Dependent Claim
121 words
A silver halide photographic material comprising a silver halide emulsion layer, wherein said silver halide photographic material contains a compound represented by the following general formula (I): where R 1 is an alkyl group, an alkenyl group, an alkynyl group, an aryl group or a hetero cyclic ring; R 2 is a hydrogen atom, an alkyl group, an aryl group or a hetero cyclic ring; R is a hydrogen atom or a blocking group; L is an alkylene or alkenylene group; J is a linkage group; X is an aromatic or heterocyclic residue; A and A 2 are each a hydrogen atom, or either one of them is a hydrogen atom and the other is an acyl, sulfonyl or oxalyl group.
Claim 3
Dependent Claim
28 words
The silver halide photographic material according to claim 1 which is a printing light-sensitive material containing the compound of the general formula (I) as a contrast increasing agent.
Claim 4
Dependent Claim
38 words
The silver halide photographic material according to claim 2 wherein the compound of the general formula (I) is incorporated in an amount of 5 x 10- 7 to 5 x 10- 1 moles per mole of silver halide.
Claim 5
Dependent Claim
28 words
The silver halide photographic material according to claim 2 wherein the compound of the general formula (I) is contained in the emulsion layer and/or an adjacent layer thereto.
Claim 6
Dependent Claim
27 words
The silver halide photographic material according to claim 1 which is a direct positive light-sensitive material containing the compound of the general formula (I) as a foggant.
Claim 7
Dependent Claim
28 words
The silver halide photographic material according to claim 5 wherein the compound of the general formula (I) is contained in the emulsion layer and/or an adjacent layer thereto.
Claim 8
Dependent Claim
40 words
The silver halide photographic material according to claim 5 wherein the compound of the general formula (I) is incorporated in an amount of 10- s to 10 -1 mole per mole of silver halide. (The remaining space is left blank.)
References Cited (Backward Citations)
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