Process and material for producing photographic multi-color images

Claim 1

PROCESS FOR THE PRODUCTION OF A PHOTOGRAPHIC MULTICOLORED IMAGE, WHICH COMPRISES EXPOSING TO LIGHT A PHOTOGRAPHIC MATERIAL CONTAINING AT LEAST TWO SILVER HALIDE EMULSION LAYERS SENSITIVE TO DIFFERENT REGIONS OF THE VISIBLE SPECTRUM, AT LEAST ONE OF THESE LAYERS CONTAINING A COLOR COUPLER WHICH IS ABLE TO FORM, BY REACTION WITH THE OXIDATION PRODUCT OF A PRIMARY AROMATIC AMINO DEVELOPING AGENT, A DYESTUFF IMAGE UNDESIRABLY ABSORBING IN THE BLUE REGION OF THE VISIBLE SPECTRUM AND MORE STRONGLY ABSORBING IN ANOTHER PART OF THE VISIBLE SPECTRUM, AND WHICH COLOR COUPLER BY OXIDATION IS CONVERTED INTO A BLUE-ABSORBING COLORED SUBSTANCE PRACTICALLY NOT ABSORBING IN SAID OTHER PART OF THE VISIBLE SPECTRUM, WHICH PROCESS FURTHER COMPRISES DEVELOPING AT LEAST THAT LAYER CONTAINING SAID COLOR COUPLER WITH A PRIMARY AROMATIC AMINO DEVELOPING AGENT, AND TREATING AT LEAST THE REMAINING COLOR COUPLER OF THIS LAYER IN AN OXIDIZING BATH, SAID COLOR COUPLER CONTAINING A -NH-NH-CA- GROUP WITHIN A RING, WHEREIN A IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF O, NH, N LINKED TO A HYDROCARBON RADICAL, AND N LINKED TO AN ACYL GROUP.