Photographic products, processes and compositions

Claim 1

A PROCESS OF FORMING TRANSFER IMAGES IN COLOR WHICH COMPRISES THE STEPS OF (1) EXPOSING A PHOTOSENSITIVE ELEMENT CONTAINING A SILVER HALIDE EMULSION AND A TEMPORARILY SHIFTED DYE, WHICH DYE IS ALSO A SLVER HALIDE DEVELOPING AGENT, SAID TEMPORARILY SHIFTED DYE COMPRISING THE LACTONE OF AN AZO PYRAZOLONE DYE CHARACTERIZED IN THAT THE PYRAZOLONE MOIETY OF SAID DYE CONTAINS A CARBOXY GROUP SO SITUATED WITH RESPECT TO THE HYDROXY GROUP OF SAID PYRAZOLONE MOIETY AS TO BE CAPABLE OF SPLITTING OFF WATER TO FROM SAID LACTONE; (2) DEVELOPING THE LATENT IMAGE CONTAINED IN SAID EXPOSED SILVER HALIDE EMULSION; (3) IMMOBILIZING SAID TEMPORARILY SHIFTED DYE IN THE EXPOSED AREAS OF SAID ELEMENT AS A RESULT OF DEVELOPMENT AND THEREBY PROVIDING AN IMAGEWISE DISTRIBUTION OF MOBILE DYE IN EXPOSED AREAS OF SAID ELEMENT; (4) TRANSFERRING, BY IMBIBITION, AT LEAST A PORTION OF SAID IMAGEWISE DISTRIBUTION FROM SAID UNEXPOSED AREAS TO A SUPERPOSED IMAGE-RECEIVING ELEMENT TO IMPART THERETO A POSITIVE DYE IMAGE; AND (5) AT SOME STAGE SUBSEQUENT TO SAID EXPOSURE, HYDROLYZING SAID TEMPORARILY SHIFTED DYE TO FORM THE CORRESPONDING ACID, THEREBY PROVIDING A NON-REVERSIBLE BATHOCHROMIC SHIFT OF THE SPECTRAL ABSORPTION CHARACTERISTICS THEREOF.