← Back to Patent Explorer
EP0154293A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Silver halide photographic materials

Assignee: Fujifilm Holdings Corp
•
Filing: 1985-02-27
•
Granted: —
•
Expires: 2005-02-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A silver halide photographic material comprising a support having at least one silver halide emulsion layer containing substantially surface latent image type silver halide grains, said emulsion layer or at least one hydrophilic colloid layer adjacent to the emulsion layer containing a compound represented by general formula (I): wherein Z represents an atomic group necessary for forming a monocyclic or condensed heterocyclic ring composed of a carbon atom or carbon atoms and a nitrogen atom or nitrogen atoms; L, represents a divalent organic group; m represents 0 or 1; L 2 represents -CONR-, -NRCO-, -SO 2 NR-, NRS0 2 , -OCO-, -COO-, -S-, -NR-, -CO-, -SO-, -S0 2 -, -OCOO-, -NRCONR'-, -NRCOO-, -OCONR-, or -NRS0 2 NR'- (wherein R and R' each represents a hydrogen atom, an alkyl group, or an aryl group); and A represents a residue formed by removing one hydrogen atom from Ar of the compound represented by the following general formula (II) or a residue formed by removing M from the compound of general formula (II): wherein Ar represents an aryl group; M represents a formyl group, an acyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylsulfinyl group, an arylsulfinyl group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfinamoyl group, an alkoxysulfonyl group, a thioacyl group, a thiocarbamoyl group, or a heterocyclic group; R, represents a hydrogen atom; said M, R 1 and the nitrogen atom to which M and R 1 attach may form a partial structure -N=C≺ of hydrazone; and R o represents a hydrogen atom, a formyl group, an acyl group, an alkoxy-carbonyl group, or an aryloxycarbonyl group. The silver halide photographic material is capable of having high contrast negative images, high sensitive negative images, and good dot images.

Inventors

  • 👤 Kimitaka Kameoka
  • 👤 Nobuaki Inoue
  • 👤 Yoshio Inagaki
  • 👤 Hidetoshi Kobayashi
  • 👤 Toshiro Takahashi

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 13:29
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34; G03C1/346; G03C1/061; Y; Y10; Y10S; Y10S430/00; Y10S430/15

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 272 words
A silver halide photographic material comprising a support having at least one silver halide emulsion layer containing substantially surface latent image type silver halide grains, said emulsion layer or at least one hydrophilic colloid layer adjacent to the emulsion layer containing a compound represented by general formula (I): wherein Z represents an atomic group necessary for forming a monocyclic or condensed heterocyclic ring composed of a carbon atom or carbon atoms and a nitrogen atom or nitrogen atoms; L 1 represents a divalent organic group; m represents 0 or 1; L 2 represents -CONR-, -NRCO-, -S0 2 NR-, -NRSO 2 -, -OCO-, -COO-, -S-, -NR-, -CO-, -SO-, -SO 2 -, -OCOO-, -NRCONR-, -NRCOO-, -OCONR-, or -NRSO 2 NR'-(wherein R and R' each represents a hydrogen atom, an alkyl group, or an aryl group); and A represents a residue formed by removing one hydrogen atom from Ar of the compound represented by the following general formula (II) or a residue formed by removing M from the compound of general formula (II): wherein Ar represents an aryl group; M represents a formyl group, an acyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylsulfinyl group, an arylsulfinyl group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfinamoyl group, an alkoxysulfonyl group, a thioacyl group, a thiocarbamoyl group, or a heterocyclic group; R 1 represents a hydrogen atom; said M, R 1 and the nitrogen atom to which M and R 1 attach may form a partial structure of hydrazone; and R 0 represents a hydrogen atom, a formyl group, an acyl group, an alkoxycarbonyl group, or an aryloxycarbonyl group.
Claim 2
Dependent Claim 272 words
A silver halide photographic material comprising a support having at least one silver halide emulsion layer containing substantially surface latent image type silver halide grains, said emulsion layer or at least one hydrophilic colloid layer adjacent to the emulsion layer containing a compound represented by general formula (I): wherein Z represents an atomic group necessary for forming a monocyclic or condensed heterocyclic ring composed of a carbon atom or carbon atoms and a nitrogen atom or nitrogen atoms; L 1 represents a divalent organic group; m represents 0 or 1; L 2 represents -CONR-, -NRCO-, -S0 2 NR-, -NRSO 2 -, -OCO-, -COO-, -S-, -NR-, -CO-, -SO-, -SO 2 -, -OCOO-, -NRCONR-, -NRCOO-, -OCONR-, or -NRSO 2 NR'-(wherein R and R' each represents a hydrogen atom, an alkyl group, or an aryl group); and A represents a residue formed by removing one hydrogen atom from Ar of the compound represented by the following general formula (II) or a residue formed by removing M from the compound of general formula (II): wherein Ar represents an aryl group; M represents a formyl group, an acyl group, an alkylsulfonyl group, an arylsulfonyl group, an alkylsulfinyl group, an arylsulfinyl group, a carbamoyl group, a sulfamoyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfinamoyl group, an alkoxysulfonyl group, a thioacyl group, a thiocarbamoyl group, or a heterocyclic group; R 1 represents a hydrogen atom; said M, R 1 and the nitrogen atom to which M and R 1 attach may form a partial structure of hydrazone; and R 0 represents a hydrogen atom, a formyl group, an acyl group, an alkoxycarbonyl group, or an aryloxycarbonyl group.
Claim 3
Dependent Claim 73 words
The silver halide photographic material as claimed in Claim 1, wherein the compound shown by general formula (I) is the compound represented by general formula (III) wherein Z, L 1 , L 2 , m, R 0 , R 1 and M have the same significance as defined in regard to general formulae (I) and (II) and G represents a group formed by removing one hydrogen atom from Ar of general formula (II).
Claim 4
Dependent Claim 62 words
The silver halide photographic material as claimed in Claim 1, wherein the compound shown by general formula (I) is the compound represented by general formula (IV): wherein Z, L1, m, R 0 , R 1 and Ar have the same significance as defined in regard to general formulae (I) and (II) and L 2 ' represents -CO-, -SO-, or -SO 2 -.
Claim 5
Dependent Claim 90 words
The silver halide photographic material as claimed in Claim 1, wherein the compound shown by general formula (I) is the compound represented by general formula (V): wherein L 1 , L 2' m, R 0 , R 1 , and M have the same significance as defined in regard to general formulae (I) and (II); R 2 and R 3 each represents a hydrogen atom, an alkyl group, an alkoxy group, a carbonamido group, a sulfonamido group, or a halogen atom; and a and b are .each 0 to 4.
Claim 6
Dependent Claim 71 words
A silver halide photographic material as claimed in Claim 1, wherein R 1 in the general formula (II) is a hydrogen atom or forms a partial structure of hydrazone with M and the nitrogen atom to which R 1 and M attach; wherein R" represents an alkyl group, an aryl group or a heterocyclic group and R"' represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group.
Claim 7
Dependent Claim 71 words
A silver halide photographic material as claimed in Claim 3, wherein R 1 in the general formula (III) represents a hydrogen atom or forms a partial structure of hydrazone with M and the nitrogen atom to which R 1 and M attach; wherein R" represents an alkyl group, an aryl group or a heterocyclic group and R"' represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group.
Claim 8
Dependent Claim 58 words
A silver halide photographic material as claimed in Claim 3, wherein R in the general formula (IV) represents a hydrogen atom or forms a partial structure of hydrazone with L 2 ' and the nitrogen atom to which R 1 and L 2 ' attach; wherein R" represents an alkyl group, an aryl group or a heterocyclic group.
Claim 9
Dependent Claim 36 words
A silver halide photographic material as claimed in Claim 1, wherein L 2 is -CONR-, -SO 2 NR-, or TNRCONR'-; wherein R and R' are each a hydrogen atom, an alkyl group, or an aryl group.
Claim 10
Dependent Claim 41 words
A silver halide photographic material as claimed in Claim 2, wherein L 2 in the general formula (III) represents -CONR-, -SO 2 NR-, or -NRCONR'-; wherein R and R' are each a hydrogen atom, an alkyl group, or an aryl group.
Claim 11
Dependent Claim 40 words
The silver halide photographic material as claimed in Claim 4, wherein L2 in the general formula (V) is -CONR-, -SO 2 NR-, or -NRCONR'-; wherein R and R' are each a hydrogen atom, an alkyl group, or an aryl group.
Claim 12
Dependent Claim 46 words
A silver halide photographic material as claimed in Claim 1, wherein the amount of the compound represented by the general formula (I) is 1 x 10 -6 to 1 x 10 -3 mol per mol of silver in the surface latent image type silver halide emulsion.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag