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Method of forming color images

  • US 5,128,238 A
  • Filed: 05/03/1990
  • Issued: 07/07/1992
  • Est. Priority Date: 05/23/1988
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of producing color images comprising continuously developing(1) a negative silver halide color photographic light-sensitive material, which has been subjected to image-wise exposure, and which has at least one silver halide emulsion layer on a support and contains a nondiffusible coupler capable of forming a dye by a coupling reaction with an oxidation product of an aromatic primary amine developing agent, and(2) a direct positive silver halide color photographic light-sensitive material, which has been exposed to image-wise exposure, and which has at least one silver halide emulsion layer on a support and contains a nondiffusible coupler capable of forming a dye by a coupling reaction with an oxidation product of an aromatic primary amine developing agent,with the same developer having a pH of 10.15 to 11.0,wherein the color developer used for development is one which has been used for development of the direct positive silver halide color photographic material and the negative silver halide color photographic material in a ratio of the area of the former to the area of the latter is from 5/95 to 95/5, and which has become stable by continuous use and replenishment until the constituents of the developer have substantially achieved an equilibrium state,wherein the bromide ion concentration in the color developer is from 1.0×

  • 10-2 to 2.5×

    10-2 gram ion/l,wherein the amount of benzyl alcohol in the color developer is from 5×

    10-2 to 2×

    10-1 mol/l,said direct positive photographic material containing i) at least one compound represented by formula (N-I), ##STR77## wherein Z11 represents a nonmetallic atomic group necessary to complete a 5- or 6-membered heterocyclic ring, which may be substituted;

    R11 represents a unsubstituted or substituted aliphatic hydrocarbon residue;

    R12 represents a hydrogen atom, an unsubstituted or substituted aliphatic or aromatic hydrocarbon residue, or a residue forming a ring by binding to the heterocyclic ring completed by Z11 ;

    provided at least one of the groups R11, R12 and Z11 contains a alkynyl group, an aliphatic or aromatic acyl group, a hydrazino group or a hydrazono group, or R11 and R12 combine with each other to complete a 6-membered ring as a dihydropyridinium skeleton, and at least one of the groups R11, R12 and Z11 may contain a group capable of accelerating adsorption onto silver halide grains;

    Y1 represents a counter ion for maintaining charge balance; and

    n represents 0 or 1, and(ii) at least one magenta coupler selected from the group consisting of compounds represented by formula (II-2) or (II-3);

    ##STR78## wherein R11 and R12 each represents a hydrogen atom, a halogen atom, a cyano group, an aliphatic or aromatic hydrocarbon group, or a heterocyclic group, ##STR79## (wherein R'"'"'1 represents a hydrogen atom, a halogen atom, a cyano group an aliphatic or aromatic hydrocarbon or heterocyclic group), a silyl group, a silyloxy group, a sililamino group, an imido group, a carbamoyl group, a sulfamoyl group, or a sulfamoylamino group, and X is an eliminatable group; and

    R11 and R12 and X each may be a divalent group via which the corresponding coupler may form a dimer, or a linking group connecting the polymer chain to the mother nucleus of the corresponding coupler.

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