Patent EP0157363A2 successfully refreshed from Google Patents.
← Back to Patent Explorer
EP0157363A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Silver halide photografic material

Assignee: Konica Minolta Inc
•
Filing: 1985-03-27
•
Granted: —
•
Expires: 2005-03-27
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A silver halide photographic material is disclosed which has formed on a support in sequence a silver halide emulsion layer incorporating a yellow coupler of the formula (I), a silver halide emulsion layer incorporating a magenta coupler of the formula (II), and a silver halide emulsion layer incorporating a cyan coupler of the formula (III): (wherein R 1 is a hydrogen atom, a halogen atom or an alkoxy group; R 2 is -NHCOR 3 , -NHS0 2 R 3 , -COOR 3 or provided that R 3 and R 4 are each an alkyl group; and Z 1 is a non-metallic atomic group necessary to form a 5-or 6-membered hetero ring together with a nitrogen atom); [wherein R s is a hydrogen atom, a halogen atom or an alkoxy group having 1 to 4 carbon atoms; R s is (provid- ed that R 7 and R 8 are each a hydrogen atom or an acyl group, and when R 7 and R 8 are each an acyl group, they may be combined to form a 5-membered hetero ring together with a nitrogen atom), an alkyl- or arylsulfonamido group, an alkyl- or arylsulfamoyl group or an alkyl- or arylcarboxylic acid ester group; Y 1 , Y 2 and Y 3 are each a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a carboxy group, an alkoxycarbonyl group, a nitro group, an aryloxy group, a cyano group or an acylamino group; and Z 2 is an atom or a group that leaves when it enters into a coupling reaction with the oxidation product of a color developing agent]; (wherein Rg is a straight- or branched-chain alkyl group having 2 to 4 carbon atoms; and R 10 is a ballast group).

Inventors

  • 👤 Shun Takada
  • 👤 Takashi Kadowaki
  • 👤 Masao Sasaki
  • 👤 Toyoki Nishijima
  • 👤 Kaoru Onodera

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-08 22:17
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/3225

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 289 words
A silver halide photographic material having formed on a support in sequence a silver halide emulsion layer incorporating a yellow coupler of the formula (I), a silver halide emulsion layer incorporating a magenta coupler of the formula (II), and a silver halide emulsion layer incorporating a cyan coupler of the formula (III): (wherein R 1 is a hydrogen atom, a halogen atom or an alkoxy group; R 2 is -NHCOR 3 , -NHSO 2 R 3 , -COOR 3 or provided that R 3 and R 4 are each an alkyl group; and Z 1 is a non-metallic atomic group necessary to form a 5- or 6-membered hetero ring together with a nitrogen atom); [wherein R 5 is a hydrogen atom, a halogen atom or an alkoxy group having 1 to 4 carbon atoms; R 6 is (provided that R 7 and R 8 are each a hydrogen atom or an acyl group, and when R 7 and R 8 are each an acyl group, they may be combined to form a 5-membered hetero ring together with a nitrogen atom), an alkyl- or arylsulfonamido group, an alkyl- or arylsulfamoyl group or an alkyl- or arylcarboxylic acid ester group; Y 1 , Y 2 and Y 3 are each a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a carboxy group, an alkoxycarbonyl group, a nitro group, an aryloxy group, a cyano group or an acylamino group; and Z 2 is an atom or a group that leaves when it enters into a coupling reaction with the oxidation product of a color developing agent]; (wherein R 9 is a straight- or branched-chain alkyl group having 2 to 4 carbon atoms; and R 10 is a ballast group).
Claim 2
Dependent Claim 289 words
A silver halide photographic material having formed on a support in sequence a silver halide emulsion layer incorporating a yellow coupler of the formula (I), a silver halide emulsion layer incorporating a magenta coupler of the formula (II), and a silver halide emulsion layer incorporating a cyan coupler of the formula (III): (wherein R 1 is a hydrogen atom, a halogen atom or an alkoxy group; R 2 is -NHCOR 3 , -NHSO 2 R 3 , -COOR 3 or provided that R 3 and R 4 are each an alkyl group; and Z 1 is a non-metallic atomic group necessary to form a 5- or 6-membered hetero ring together with a nitrogen atom); [wherein R 5 is a hydrogen atom, a halogen atom or an alkoxy group having 1 to 4 carbon atoms; R 6 is (provided that R 7 and R 8 are each a hydrogen atom or an acyl group, and when R 7 and R 8 are each an acyl group, they may be combined to form a 5-membered hetero ring together with a nitrogen atom), an alkyl- or arylsulfonamido group, an alkyl- or arylsulfamoyl group or an alkyl- or arylcarboxylic acid ester group; Y 1 , Y 2 and Y 3 are each a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a carboxy group, an alkoxycarbonyl group, a nitro group, an aryloxy group, a cyano group or an acylamino group; and Z 2 is an atom or a group that leaves when it enters into a coupling reaction with the oxidation product of a color developing agent]; (wherein R 9 is a straight- or branched-chain alkyl group having 2 to 4 carbon atoms; and R 10 is a ballast group).
Claim 3
Dependent Claim 20 words
A silver halide photographic material according to Claim 1, wherein R 9 in said formula (III) is an ethyl group.
Claim 4
Dependent Claim 47 words
A silver halide photographic material according to Claim 1, wherein R 10 in said formula (III) is a group represented by the following formula: wherein R 11 is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; and Ar is an aryl group.
Claim 5
Dependent Claim 30 words
A silver halide photographic material according to Claim 1, wherein R 2 is said formula (I) is substituted at para-position of the benzen ring with respect to R 1 .
Claim 6
Dependent Claim 27 words
A silver halide photographic material according to Claim 1, wherein Y 1 , Y 2 and Y 3 in said formula (II) are each a halogen atom.
Claim 7
Dependent Claim 27 words
A silver halide photographic material according to Claim 1, wherein Z 2 in said formula (II) is a halogen atom, an alkylthio group or an arylthio group.
Claim 8
Dependent Claim 62 words
A silver halide photographic material according to Claim 1, which comprises, in sequence on the support, a blue-sensitive silver halide emulsion layer containing a yellow coupler represented by said formula (I), a green-sensitive silver halide emulsion layer containing a magenta coupler represented by said formula (II) and a red-sensitive silver halide emulsion layer containing a cyan coupler represented by said formula (III).

References Cited (Backward Citations)

US2895826A Cited
JPS50112038A Cited
DE2431485A1 Cited
JPS53109630A Cited
JPS55163537A Cited
EP0142086A2 Cited

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