Acylacetanilide coupler with heterocyclic diacyl amino coupling-off group
AssigneeKonishiroku Photo Industry Co., Ltd.
InventorsMitsuto Fujiwhara, Tamotsu Kojima, Syunji Matsuo
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Abstract
A process for forming yellow image in a light-sensitive silver halide photographic material which uses as a yellow image-forming a coupler a compound of the formula ##STR1## wherein A is a yellow image-forming coupler residue having an active methylene group; ##STR2## is a group which has been substituted for one hydrogen atom of the active methylene group in said coupler residue A; and Z is a group selected from alkylene, alkenylene, cycloalkylene, cycloalkenylene, terphenylene, arylene and pyridine-diyl groups.
Claims6
In a process for forming a yellow image in a silver halide light-sensitive color photographic material, comprising processing the photographic material by a color developer in the presence of an acyl acetanilide type 2-equivalent yellow coupler having active methylene herein and a split off group substituted for one of the two hydrogens on the active methylene, the improvement which comprises the split-off group being represented by the following general formula:
- ##STR20## wherein Z is a group selected from alkylene, alkenylene, cycloalkylene, cycloalkenylene, terphenylene, arylene and pyridine-diyl.
A silver halide light-sensitive color photographic material comprising an acyl acetanilide type 2-equivalent yellow coupler having active methylene therein with a split off group substituted for one of the two hydrogens on the active methylene, said split-off group beinhg represented by the following general formula:
- ##STR21## wherein Z is a group selected from alkylene, alkenylene, cycloalkylene, cycloalkenylene, terphenylene, arylene and pyridinediyl.
A method for forming dye images comprising processing an exposed silver halide photographic emulsion with an aqueous alkaline processing solution containing an aromatic primary amino developing agent in the presence of a yellow forming coupler having the following general formula ##STR22## wherein R.sup.1 is tertiary butyl;
- R.sup.2 is an aryl group;
- and Z is selected from the group consisting of alkylene, alkenylene, cycloalkylene, cycloalkenylene, terphenylene, arylene and pyridine-diyl.
A method for forming dye images comprising processing an exposed silver halide photographic emulsion with an aqueous alkaline solution containing an aromatic primary amino developing agent in the presence of a yellow forming coupler having the general formula ##STR23## wherein R.sup.1 is an aryl group;
- R.sup.2 is an aryl group;
- and Z is selected from the group consisting of alkylene, alkenylene, cycloalkyllene, cycloalkenylene, terphenylene, arylene and pyridine-diyl.
Dependencies are inferred from the claim text.