Colloid transfer process

Claim 1

IN A PROCESS PF PHOTOGRAPHIC REPRODUCTION WHICH COMPRISES FORMING BY EXPOSURE TO A TWO-TONE SUBJECT AND DEVELOPMENT IN A LIGHT-SENSITIVE, SUBSTANTIALLY UNHARDENED, ORGANIC COLOID-SILVER HALIDE EMULSION LAYER, A HARDENED COLLOID IMAGE AND LEAVING SUBSTANTIALLY NHARDENED COLLOID IN THE REMAINING AREA OF SAID LAYER, SAID UNHARDENED LAYER BEING NOT HARDER THAN A GELATIN LAYER CONTAINING 0.7 GRAM OF FORMALDEHYE PER POUND OF GELATIN FRESHLY COATED, THE STEP OF PRESSING THE EMULSION LAYER WHILE SAID EMULSION IS MOIST AGAINST A NONFIBROUS, TRANSPARENT POLYMERIC SHEET HAVING THEREON A NON-LIGHT-SENSITIVE COATING SELECTED FROM THE CLASS CONSISTIG OF PIG GELATIN, THE AMMONIUM SALT OF ETHYLCELLULOSEPHTHALATE, THE AMMONIUM SALT OF A CARBOXY ESTER-LACTONE OF AN INTERPOLYMER OF MALEIC ANHYDRIDE AND VINYL ACETATE AND THE ALKALI METAL AND AMMONIUM SALTS OF A COPOLYMER OF ETHYLACRYLATE AND ACYLIC ACID, TO CAUSE ONLY SAID UNHARDENED COLLOID PORTION OF SAID LAYER TO ADHERE TO SAID SHEET, AND SEPARATING SAID SHEET AND SAID EMULSION LAYER TO TRANSFER ONLY A STRATUM OF THE UNHARDENED COLLOID PORTION OF SAID LAYER TO SAID SHEET.