Polyvinyl acetal silver halide emulsion containing polyvinyl acetal color formers

Claim 1

A PROCESS WHICH COMPRISES PRECIPITATING LIGHT-SENSITIVE SILVER HALIDES IN AN AQUEOUS SOLUTION OF A NON-COLORFORMING POLYVINYL ACETAL TAKEN FROM THE GROUP CONSISTING OF SIMPLY POLYVINYL ACETALS OF POLYVINYL ALCOHOL WITH BENZALDEHYDE AND MIXED ACETALS OF POLYVINYL ALCOHOL WITH BENZALDEHYDE AND A ALDEHYDE TAKEN FROM THE CLASS CONSISTING OF ALIPHATIC AND AROMATIC CARBOXYLIC AND SULFONIC ACIDS AND THIER WATER-SOLUBLE SALTS, THE CARBOXYLIC AND SULFONIC GROUPS BEING THE SOLE SUBSTITUENT GROUPS ATTACHED TO THE HYDROCARBON NUCLEUS OF SAID ALDEHYDES, SAID POLYVINYL ACETALS CONTAINING A LARGE NUMBER OF RECURRING INTRALINEAR -CH2-CHOH- GROUPS AND BEING HYDROPHILIC IN CHARACTER, ALLOWING THE SILVER HALIDE CRYSTALS TO RIPEN, REMOVING THE WATER-SOLUBLE SALTS, DIVIDING THE RESULTING AQUEOUS DISPERSION INTO PORTIONS, ADMIXING A DIFFERENT POLYVINYL ACETAL COLLOID COLOR FORMER CAPABLE OF FORMING UPON COLOR COUPLING DEVELOPMENT OF AN EXPOSED SILVER SALT IMAGE A DYE TAKEN FROM THE GROUP CONSISTING OF QUINONEIMINE AND AZOMETHINE DYES AND CONTAINING IN ONE OF AN ACTIVE COUPLING GROUP OF THE STRUCTURE