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US4774167A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for processing silver halide color photographic materials wherein the color developer contains low concentrations of benzyl alcohol, hydroxylamine and sulfite

Assignee: Fujifilm Holdings Corp
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Filing: 1987-02-24
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Granted: 1988-09-27
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Expires: 2007-02-24
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Abstract

Abstract A method for processing a silver halide color photographic material is provided, which comprises subjecting an imagewise exposed silver halide color photographic material having at least one silver halide emulsion layer on a reflective support to color development for a period not exceeding 2 minutes and 30 seconds using a color-developing solution containing substantially no benzyl alcohol, a sulfite in a concentration of 8×10 -3 mol/liter or less, and a hydroxylamine in a concentration of 1.5×10 -2 mol/liter or less, thereby achieving high color densities of the developed images and reduced fog. The effects of this method are particularly significant in photographic paper containing a pyrazoloazole type magenta coupler.

Inventors

  • 👤 Toshio Koshimizu
  • 👤 Takatoshi Ishikawa
  • 👤 Shinji Ueda

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 19:05
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/407; G03C7/413

Claims Analysis

Total Claims: 21
Claim 1
Independent Claim 80 words
A method for processing a silver halide color photographic material, which comprises subjecting an imagewise exposed silver halide color photographic material having at least one silver halide emulsion layer on a reflective support to color development for a period not exceeding 2 minutes and 30 seconds using a color-developing solution containing 0.5 ml/liter or less benzyl alcohol, a sulfite in a concentration of 8×10 -3 mol/liter or less, and a hydroxylamine in a concentration of 1.5×10 -2 mol/liter or less.
Claim 2
Independent Claim 80 words
A method for processing a silver halide color photographic material, which comprises subjecting an imagewise exposed silver halide color photographic material having at least one silver halide emulsion layer on a reflective support to color development for a period not exceeding 2 minutes and 30 seconds using a color-developing solution containing 0.5 ml/liter or less benzyl alcohol, a sulfite in a concentration of 8×10 -3 mol/liter or less, and a hydroxylamine in a concentration of 1.5×10 -2 mol/liter or less.
Claim 3
Dependent Claim 104 words
A method for processing a silver halide color photographic material as in claim 1, wherein the silver halide color photographic material contains a magenta coupler represented by formula (I) ##STR19## wherein R 1 represents a hydrogen atom or a substituent group; Y 1 represents a group capable of being released upon a coupling reaction with an oxidation product of an aromatic primary amine-developing agent; and Za, Zb, and Zc each represents an unsubstituted methine group, a substituted methine group, ═N--, or --NH--, provided that either of the Za--Zb bond or the Zb--Zc bond is a double bond, and the other is a single bond.
Claim 4
Dependent Claim 26 words
A method for processing a silver halide color photographic material as in claim 1, wherein the color development time is from 30 seconds to 2 minutes.
Claim 5
Dependent Claim 26 words
A method for processing a silver halide color photographic material as in claim 2, wherein the color development time is from 30 seconds to 2 minutes.
Claim 6
Dependent Claim 25 words
A method for processing a silver halide color photographic material as in claim 1, wherein the color developing solution contains no benzyl alcohol at all.
Claim 7
Dependent Claim 25 words
A method for processing a silver halide color photographic material as in claim 2, wherein the color developing solution contains no benzyl alcohol at all.
Claim 8
Dependent Claim 26 words
A method for processing a silver halide color photographic material as in claim 1, wherein the sulfite concentration ranges from 1.6×10 -3 to 6.5×10 -3 mol/liter.
Claim 9
Dependent Claim 26 words
A method for processing a silver halide color photographic material as in claim 2, wherein the sulfite concentration ranges from 1.6×10 -3 to 6.5×10 -3 mol/liter.
Claim 10
Dependent Claim 31 words
A method for processing a silver halide color photographic material as in claim 1, wherein the concentration of hydroxylamine in the color developing solution is not more than 3.8×10 -3 mol/liter.
Claim 11
Dependent Claim 31 words
A method for processing a silver halide color photographic material as in claim 2, wherein the concentration of hydroxylamine in the color developing solution is not more than 3.8×10 -3 mol/liter.
Claim 12
Dependent Claim 23 words
A method for processing a silver halide color photographic material as in claim 1, wherein the color developing solution is free from hydroxylamine.
Claim 13
Dependent Claim 23 words
A method for processing a silver halide color photographic material as in claim 2, wherein the color developing solution is free from hydroxylamine.
Claim 14
Dependent Claim 32 words
A method for processing a silver halide color photographic material as in claim 2, wherein said magenta coupler represented by formula (I) is selected from 1H-imidazo[1,2-b]pyrazoles, 1H-pyrazolo[1,5-b]pyrazoles, 1H-pyrazolo[5,1-c][1,2,4]triazoles, 1H-pyrazolo[1,5-d]tetrazoles, 1H-pyrazolo[1,5-a]benzimidazoles, and 1H-pyrazolo[1,5-b][1,2,4]triazoles.
Claim 15
Dependent Claim 285 words
A method for processing a silver halide color photographic material as in claim 2, wherein said magenta coupler is a compound represented by formula (II), (III), (IV), (V), (VI) or (VII) ##STR20## wherein R 5 , R 6 and R 7 (which may be the same or different) each represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, a heterocyclic group, a cyano group, an alkoxy group, an aryloxy group, a heterocyclic oxy group, an acyloxy group, a carbamoyloxy group, a silyloxy group, a sulfonyloxy group, an acylamino group, an anilino group, a ureido group, an imido group, a sulfamoylamino group, a carbamoylamino group, an alkylthio group, an arylthio group, a heterocyclic thio group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfonamido group, a carbamoyl group, an acyl group, a sulfamoyl group, a sulfonyl group, a sulfinyl group, an alkoxycarbonyl group or an aryloxycarbonyl group; and Y 1 represents a hydrogen atom, a halogen atom, a carboxyl group or a coupling releasable group capable of being released upon coupling by being bonded with the carbon atom located at the coupling position through an oxygen atom, a nitrogen atom or a sulfur atom, or alternatively, R 5 , R 6 , R 7 or Y 1 represents a divalent group forming a bis coupler; and wherein the couplers represented by formulae (II), (III), (V), (VI), or (VII) may be in the form of a polymeric coupler in which the coupler comprises a vinyl monomer and R 5 , R 6 or R 7 represents a chemical bond or a connecting group, through which the couplers represented by formulae (II), (III), (IV), (V), (VI), or (VII) and the vinyl group are connected together.
Claim 16
Dependent Claim 180 words
A method for processing a silver halide color photographic material as in claim 2, wherein said magenta coupler is a compound represented by formula (IV) or (V) ##STR21## wherein R 5 and R 6 each represents a hydrogen atom, a halogen atom, an alkyl group, an aryl group, a heterocyclic group, a cyano group, an alkoxy group, an aryloxy group, a heterocyclicloxy group, an acyloxy group, a carbamoyloxy group, a silyloxy group, a sulfonyloxy group, an acylamino group, an anilino group, a ureido group, an imido group, a sulfamoylamino group, a carbamoylamino group, an alkylthio group, an arylthio group, a heterocyclicthio group, an alkoxycarbonylamino group, an aryloxycarbonylamino group, a sulfonamido group, a carbamoyl group, an acyl group, a sulfamoyl group, a sulfonyl group, a sulfinyl group, an alkoxycarbonyl group, or an aryloxycarbonyl group; and Y 1 represents a hydrogen atom, a halogen atom, a carboxyl group, or a coupling releasable group capable of being released upon coupling by being bonded with the carbon atom located at the coupling position through an oxygen atom, a nitrogen atom or a sulfur atom.
Claim 17
Dependent Claim 67 words
A method for processing a silver halide color photographic material as in claim 15, wherein the magenta coupler is represented by formula (IV) or (V) wherein at least one of R 5 and R 6 is a branched substituted or unsubstituted alkyl group which is an alkyl group or a substituted alkyl group which is connected to a pyrazoloazole skeleton through a secondary or tertiary carbon atom.
Claim 18
Dependent Claim 36 words
A method for processing a silver halide color photographic material as in claim 16, wherein the secondary or tertiary carbon atom has at least two groups selected from an alkyl group or a substituted alkyl group.
Claim 19
Dependent Claim 38 words
A method for processing a silver halide color photographic material as in claim 17, wherein the secondary or tertiary carbon atom has at least one of a sulfonamido alkyl group, a sulfonamidoaryl alkyl group, or a sulfonylalkyl group.
Claim 20
Dependent Claim 27 words
A method for processing a silver halide color photographic material as in claim 1, wherein the color developing solution contains an aromatic primary amine color developing agent.
Claim 21
Dependent Claim 24 words
A method for processing a silver halide color photographic material as in claim 19, wherein the aromatic primary amine color developing agent is N-ethyl-N-(β-methanesulfonamidoethyl)-3-methyl-4-aminoaniline.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-09-27 1992-03-28 1992-09-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-09-27 1996-03-28 1996-09-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-09-27 2000-03-28 2000-09-27 $7700.00 Window Closed / Lapsed

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