Photographic bleaching out of cyanine dyes

Claim 1

A DIRECT POSITIVE PHOTOGRAPHIC PROCESS WHICH COMPRISES PREPARING A COMPOSITION CONSISTING OF A MIXTURE OF CYANINE DYES AND A SENSITIZING AGENT FOR ACCELERATING THE BLEACH-OUT OF SAID DYES, SAID SENSITIZING AGENT BEING A NORMALLY SOLID ORGANIC HALOGEN-CONTAINING COMPOUND WHICH ACCELERATES THE BLEACHING OUT OF SAID CYANINE DYE UPON EXPOSURE, THE ORGANIC COMPOUND BEING ONE HAVING AT LEAST THREE HALOGEN ATOMS ON A SINGLE CARBON ATOM, AND REPRESENTED BY THE GENERAL FORMULA A-C-X3 WHEREIN A REPRESENTS A MEMBER SELECTED FROM THE GROUP CONSISTING OF H, BR, CL, I, ALKYL AND ARYL, AND EACH X REPRESENTS A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CL, BR, AND I; THE ORGANIC HALOGEN COMPOUND BEING PRESENT IN SAID COMPOSITION FROM ABOUT EQUAL PARTS BY WEIGHT OF ORGAIC HALOGEN COMPOUND AND CYANINE DYE UP TO 10,000 PARTS BY WEIGHT OF ORGAIC HALOGEN COMPOUND FOR EACH PART BY WEIGHT OF CYANINE DYE; DISPERSING SAID COMPOSITION IN A PHOTOCHEMICALLY INERT CARRIER; COATING THE DISPERSION ON A SUBSTRATE; AND EXPOSING THE COATING TO LIGHT OF A SUITABLE COLOR, THEREBY OBTAINING A DIRECT POSITIVE IMAGE.