Photographic diffusion transfer process

Claim 1

A METHOD OF PRODUCING HIGH QUALITY POSITIVE PHOTOGRAPHIC PRINTS UTILIZING A PHOTOGRAPHIC IMAGE-RECORDING SHEET MATERIAL CONTAINING A PHOTOSENSITVE SILVER HALIDE AND HAVING SUBSTANTIALLY THE SAME CHARACTERISTICS FOR EACH OF SAID PRINTS, COMPRISING: FOR EACH OF SAID PRINTS, SUBJECTING A SINGLE AREA OF SAID IMAGE-RECORDING SHEET MATEIAL TO A SINGLE EXPOSURE AT AN APETURE AND FOR A DURATION DETERMINED PRIOR TO MEASUREMENT OF THE SUBJECT BRIGHTNESS TO PRODUCE A LATENT IMAGE OF SAID SUBJECT IN SAID AREA OF SAID SHEET MATERIAL: PROVIDING A PLURALITY OF CONTAINERS OF DIFFERENT LIQUID PROCESSING AGENTS, EACH OF SAID CONTAINERS CONTAINING AN AMOUNT OF SAID LIQUID PROCESSING AGENT SUFFICIENT TO PROCESS SUBSTANTIALLY ONLY ONE OF SAID AREAS AND CAPABLE, WHEN PERMEATED INTO SAID IMAGE-RECORDING SHEET MATERIAL, OF PRODUCING A SILVER TRANSFER PRINT HAVING A FULL, PHOTOGRAPHICALLY USEFUL EXPOSURE RANGE IN AN IMAGE-RECEIVING LAYER SUPERPOSED WITH SAID IMAGERECORDING LAYER BY A SILVER HALIDE DIDDUSION-TRANSFER REVERSAL PROCESS IMPARTING AN EQUIVALENT OVERALL SPEED TO SAID IMAGE-RECORDING SHEET MATEIAL APPROPIRATE FOR A PREDETERMINED EXPOSURE; SAID PROCESSING AGENTS PROVIDED BEING CAPABLE OF IMPARTING TO SAID IMAGE-RECORDING SHEET MATEIAL A PLURALITY OF PREDETERMINED EQUICALENT OVERALL SPEEDS APPROPRIATE FOR EXPOSURES DIFFERING BY PREDETERMINED AMOUNTS; AT THE TIME OF EXPOSURE OF SAID IMAGE-RECORDING SHEET MATERIAL, MEASURING THE BRIGTNESS OF SAID SUBJECT BY MEANS INDICATING WHICH OF SAID CONTAINERS CONTAINS SAID PROCESSING AGENT CAPABLE OF IMPARTING AN EQUIVALENT OVERALL SPEED APPROPRIATE FOR SAID EXPOSURE; DISPENSING SAID PROCESSING AGENT FROMSAID CONTAINER INDICATED BY THE LAST-MENTIONED MEANS AND DISTRIBUTING SAID PROCESSING AGENT IN CONTACT WITH SAID AREA OF SAID EXPOSED IMAGE-RECORDING SHEET MATERIAL FOR PERMEATION THEREINTO TO EFFECT THE TREATMENT THEREOF; AND BY SAID PROCESSING AGENT FORMING A POSITIVE DIFFUSIONTRANSFER PRINT IN AN IMAGE-RECEIVING LAYER SUPERPOSED WITH SAID IMAGE-RECORDING SHEET MATEIAL.

Claim 2

A METHOD OF PRODUCING HIGH QUALITY POSITIVE PHOTOGRAPHIC PRINTS UTILIZING A PHOTOGRAPHIC IMAGE-RECORDING SHEET MATERIAL CONTAINING A PHOTOSENSITVE SILVER HALIDE AND HAVING SUBSTANTIALLY THE SAME CHARACTERISTICS FOR EACH OF SAID PRINTS, COMPRISING: FOR EACH OF SAID PRINTS, SUBJECTING A SINGLE AREA OF SAID IMAGE-RECORDING SHEET MATEIAL TO A SINGLE EXPOSURE AT AN APETURE AND FOR A DURATION DETERMINED PRIOR TO MEASUREMENT OF THE SUBJECT BRIGHTNESS TO PRODUCE A LATENT IMAGE OF SAID SUBJECT IN SAID AREA OF SAID SHEET MATERIAL: PROVIDING A PLURALITY OF CONTAINERS OF DIFFERENT LIQUID PROCESSING AGENTS, EACH OF SAID CONTAINERS CONTAINING AN AMOUNT OF SAID LIQUID PROCESSING AGENT SUFFICIENT TO PROCESS SUBSTANTIALLY ONLY ONE OF SAID AREAS AND CAPABLE, WHEN PERMEATED INTO SAID IMAGE-RECORDING SHEET MATERIAL, OF PRODUCING A SILVER TRANSFER PRINT HAVING A FULL, PHOTOGRAPHICALLY USEFUL EXPOSURE RANGE IN AN IMAGE-RECEIVING LAYER SUPERPOSED WITH SAID IMAGERECORDING LAYER BY A SILVER HALIDE DIDDUSION-TRANSFER REVERSAL PROCESS IMPARTING AN EQUIVALENT OVERALL SPEED TO SAID IMAGE-RECORDING SHEET MATEIAL APPROPIRATE FOR A PREDETERMINED EXPOSURE; SAID PROCESSING AGENTS PROVIDED BEING CAPABLE OF IMPARTING TO SAID IMAGE-RECORDING SHEET MATEIAL A PLURALITY OF PREDETERMINED EQUICALENT OVERALL SPEEDS APPROPRIATE FOR EXPOSURES DIFFERING BY PREDETERMINED AMOUNTS; AT THE TIME OF EXPOSURE OF SAID IMAGE-RECORDING SHEET MATERIAL, MEASURING THE BRIGTNESS OF SAID SUBJECT BY MEANS INDICATING WHICH OF SAID CONTAINERS CONTAINS SAID PROCESSING AGENT CAPABLE OF IMPARTING AN EQUIVALENT OVERALL SPEED APPROPRIATE FOR SAID EXPOSURE; DISPENSING SAID PROCESSING AGENT FROMSAID CONTAINER INDICATED BY THE LAST-MENTIONED MEANS AND DISTRIBUTING SAID PROCESSING AGENT IN CONTACT WITH SAID AREA OF SAID EXPOSED IMAGE-RECORDING SHEET MATERIAL FOR PERMEATION THEREINTO TO EFFECT THE TREATMENT THEREOF; AND BY SAID PROCESSING AGENT FORMING A POSITIVE DIFFUSIONTRANSFER PRINT IN AN IMAGE-RECEIVING LAYER SUPERPOSED WITH SAID IMAGE-RECORDING SHEET MATEIAL.