Novel photographic products and processes

Abstract

Abstract THE PRESENT INVENTION RELATES TO PHOTOGRAPHY, PARTICULARLY, TO PHOTOGRAPHIC PRODUCTS SPECIFICALLY ADAPTED FOR EMPLOYMENT IN SPECIFIED PHOTOGRAPHIC DIFFUSION TRANSFER COLOR PROCESSES AND, MORE PARTICULARLY, TO PHOTOGRAPHIC PRODUCTS WHICH COMPRISE A COMPOSITE PHOTOSENSITIVE STRUCTURE CONTAINING, IN COMBINATION, A PHOTOSENSITIVE LAMINATE INCLUDING, AS ESSENTIAL LAYERS, IN SEQUENCE, A DIMENSIONALLY STABLE LAYER TRANSPARENT TO ACTINIC RADIATION; AN OPTIONAL POLYMERIC LAYER SUBSTANTIALLY TRANSPARENT TO INCIDENT RADIATION AND CONTAINING SUFFICIENT ACIDIFYING CAPACITY TO EFFECT REDUCTION OF A PROCESSING COMPOSITION HAVING A PH AT WHICH A SELECTED DYE IMAGE-FORMING MATERIAL IS DIFFUSIBLE TO A PH AT WHICH SUCH MATERIAL IS SUBSTANTIALLY NONDIFFUSIBLE; A POLYMERIC LAYER DYEABLE BY THE SELECTED DYE IMAGE-FORMING MATERIAL; A PROCESSING COMPOSITION PERMEABLE OPAQUE LAYER; AND A PHOTOSENSITIVE SILVER HALIDE LAYER HAVING ASSOCIATED THEREWITH A DYE IMAG-FORMING MATERIAL WHICH IS PROCESSING COMPOSITION DIFFUSIBLE, AS A FUNCTION OF THE POINT-TO-POINT DEGREE OF THE SILVER HALIDE LAYER''S EXPOSURE TO INCIDENT ACTINIC RADIATION; A TRANSPARENT DIMENSIONALLY STABLE SHEET SUPERPOSED SUBSTANTIALLY COEXTENSIVE THE SURFACE OF THE LAMINATE OPPOSITE THE DIMENSIONALLY STABLE TRANSPARENT LAYER; AND A RUPTURABLE CONTAINER RETAINING A PROCESSING COMPOSITION CONTAINING AN OPACIFYING AGENT POSITIONED EXTENDING TRANSVERSE A LEADING EDGE OF THE FILM UNIT TO EFFECT UNIDIRECTIONAL DISCHARGE OF THE CONTAINER''S CONTENTS INTERMEDIATE THE DIMENSIONALLY STABLE SHEET AND THE LAMINATE; AND TO SPECIFIED PHOTO- GRAPHIC DIFFUSION TRANSFER COLOR PROCESSES EMPLOYING SUCH PRODUCTS.

Inventors

• 👤 Howard G Rogers

Bibliographic Details