Color image forming process utilizing substantially water-insoluble basic metal compounds and complexing compounds
AssigneeFuji Photo Film Co., Ltd.
InventorsHiroyuki Hirai, Haruhiko Iwano
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Abstract
A color image is formed by imagewise exposing a color photosensitive material comprising at least a silver halide and a coupler and subjecting the material to intensified development with a processing solution containing a reducing agent and an intensifier. A substantially water-insoluble basic metal compound is previously contained in the silver halide based color photosensitive material, while the processing solution contains a compound capable of complexing reaction with the metal ion of the substantially water-insoluble basic metal compound to release a base.
Claims6
A process for forming a color image, comprising subjecting an imagewise exposed color photosensitive material comprising at least a silver halide and a coupler to intensified development in the presence of a reducing agent and at least one intensifier, characterized in that
- said silver halide color photosensitive material contains a substantially water-insoluble basic metal compound therein, and
- a processing solution containing the intensifier further contains a complexing compound capable of complexing reaction with the metal ion of said substantially water-insoluble basic metal compound to release a base, wherein said complexing compound is selected from aromatic heterocyclic compounds having at least one --COOM group and containing a pyridine or quinoline ring, wherein M is selected from the class consisting of an alkali metal, a guanidine, an amidine and quaternary ammonium.
A process for forming a color image, comprising subjecting an imagewise exposed color photosensitive material comprising at least a silver halide and a coupler to intensified development in the presence of a reducing agent and at least one intensifier, characterized in that
- said silver halide color photosensitive material contains a substantially water-insoluble basic metal compound therein, and
- a processing solution containing the intensifier further contains a complexing compound capable of complexing reaction with the metal ion of said substantially water-insoluble basic metal compound to release a base, wherein said complexing compound is selected form aromatic heterocyclic compounds having at least one --COOM group and containing one nitrogen atom in their ring, wherein M is selected from the class consisting of an alkali metal, a guanidine, an amidine and quaternary ammonium and wherein the at least one --COOM group is attached to the ring at the .alpha.-position thereof relative to the one nitrogen atom in the ring.
A process for forming a color image, comprising subjecting an imagewise exposed color photosensitive material comprising at least a silver halide and a coupler to intensified development in the presence of a reducing agent and at least one intensifier, characterized in that
- said silver halide color photosensitive material contains a substantially water-insoluble basic metal compound therein, and
- a processing solution containing the intensifier further contains a complexing compound capable of complexing reaction with the metal ion of said substantially water-insoluble basic metal compound to release a base, wherein said complexing compound is selected from compounds having the general formula:
- ##STR37## wherein R represents an electron donating radical selected from the class consisting of hydrogen, an aryl radical, a halogen atom, an alkoxy radical, --COOM, a hydroxycarbonyl radical, an amino or substituted amino radical, and an alkyl radical, the two R's may be the same or different,
- Z.sup.1 and Z.sup.2 are as defined for R and may combine together to form a ring fused to the pyridine ring, and
- M is selected from the class consisting of an alkali metal, a guanidine, an amidine, and quaternary ammonium.
Dependencies are inferred from the claim text.