Novel photographic processing compositions and improved processing using such compositions for preparing silver sound tracks
Abstract
Abstract IMPROVED PHOTOGRAPHIC PROCESSING COMPOSITIONS FOR PREPARING SILVER SOUND TRACKS ARE PROVIDED WHICH CONTAIN A SILVER BLEACH INHIBITOR AND A DIFFUSIBLE ONIUM SALT. ALSO PROVIDED IS AN IMPROVED PROCESS FOR PRODUCING A SILVER SOUND TRACK IN AN EXPOSED PHOTOGRAPHIC ELEMENT HAVING AT LEAST ONE SILVER HALIDE EMULSION LAYER WHICH COMPRISES DEVELOPING THE EXPOSED ELEMENT TO FORM A PICTURE RECORD COMPRISING SILVER AND DYE AND A SOUND RECORD COMPRISING SILVER AND BLEACHING AND FIXING THE ELEMENT TO REMOVE THE SILVER OF THE PICTURE RECORD WHICH IMPROVEMENT COMPRISES SELECTIVELY CONTACTING THE SOUND TRACK RECORD PRIOR TO BLEACHING WITH A MIXTURE OF A SILVER BLEACH INHIBITOR AND A DIFFUSIBLE ONIUM SALT TO RETAIN AT LEAST A PORTION OF THE SILVER OF THE SILVER SOUND TRACK DURING THE BLEACHING.
Inventors
- 👤 William S Lane
Bibliographic Details
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