Novel photographic products and processes for color diffusion transfer utilizing silver halide emulsions with specific proportions of average halide grain size

Abstract

Abstract THE PRESENT INVENTION RELATES TO PHOTOGRAPHY AND, MORE PARTICULARLY, TO DIFFUSION TRANSFER PROCESS PHOTOGRAPHIC FILM UNITS WHICH COMPRISE A PHOTOSENSITIVE ELEMENT ADAPTED TO PROVIDE, BY DIFFUSING TRANSFER PHOTOGRAPHIC PROCESS, SELECTIVE DYE IMAGE RECORDATION OF INCIDENT ACTINIC RADIATION AS A FUNCTION OF THE POINT-TO-POINT DEGREE OF PHOTOSENSITIVE ELEMENT EXPOSURE, WHICH FILM UNIT INCLUDES A PLURALITY OF ESSENTIAL LAYERS INCLUDING A PHOTOSENSITIVE SILVER HALIDE LAYER, COMPRISING PHOTOSENSITIVE SILVER IODOCHLOROBROMIDE WHICH CONTAIN IN TERMS OF THE HALIDE THEREOF, BY WEIGHT, NOT SUBSTANTIALLY IN EXCESS OF ABOUT 5% IODIDE AND ABOUT 10% CHLORIDE WITH BROMIDE SUFFICIENT TO PROVIDE 100%, THE GRAINS OF THE LAYER PREFERABLY POSSESSING A MEAN PARTICLE SIZE WITHIN THE RANGE OF ABOUT 0.3 TO 3.0U, HAVING ASSOCIATED THEREWITH DYE IMAGE-FORMING MATERIAL WHICH IS DIFFUSIBLE DURING PROCESSING AS A FUNCTION OF THE POINT-TO-POINT DEGREE OF SILVER HALIDE LAYER EXPOSURE TO INCIDENT ACTINIC RADIATION AND A LAYER ADAPTED TO RECEIVE DYE IMAGE-FORMING MATERIAL DIFFUSING THERETO; AND TO SPECIFIC DIFFUSION TRANSFER PROCESSES EMPLOYING SUCH FILM UNITS.

Inventors

• 👤 William J Timson

Bibliographic Details