Mixed packet photographic emulsions

Claim 1

A LIGHT-SENSITIVE MIXED PACKET PHOTOGRAPHIC EMULSION COMPRISING PACKETS OR DISCRETE PARTICLES OF GELATIN REACTED WITH A WATER-SOLUBLE SALT OF AN INTERPOLYMER OF STYRENE AND AN A,B-UNSATURATED CARBOXYLIC ACID, SAID PARTICLES OR PACKETS CONTAINING A NON-DIFFUSING COLOR-FORMING COMPOUND CAPABLE OF REACTING WITH THE OXIDATION PRODUCT OF A PRIMARY AROMATIC AMINO DEVELOPING AGENT ON PHOTOGRAPHIC DEVELOPMENT, AND SILVER HALIDE SENSITIVE TO AT LEAST ONE REGION BUT LESS THAN ALL REGIONS OF THE VISIBLE SPECTRUM, AND AT LEAST ONE SEPARATE SET OF PACKETS OR DISCRETE PARTICLES OF GELATIN REACTED WITH SAID INTERPOLYMER CONTAINING A NON-DIFFUSING COLOR-FORMING COMPOUND DIFFERENT FROM SAID FIRST MENTIONED COLOR-FORMING COMPOUND AND SILVER HALIDE SENSITIVE TO A REGION OF THE VISIBLE SPECTRUM DIFFERENT FROM THAT TO WHICH SAID FIRST MENTIONED SILVER HALIDE IS SENSITIVE, THE SENSITIVE AND COLOR-FORMING INGREDIENTS BEING WITHIN THE RESPECTIVE PACKETS OR DISCRETE PARTICLES AND ALL OF SAID PACKETS OR DISCRETE PARTICLES BEING DISPERSED IN GELATIN HAVING MIXED THEREWITH A WATERSOLUBLE SALT OF A POLYMER SELECTED FROM THE CLASS CONSISTING OF METHYLMETHACRYLATE-METHACRYLIC ACID COPOLYMER, ALGIN, CARBOXY METHYL CELLULOSE AND CELLULOSE SULFATE.