Abstract:
This invention relates to a class of indicator dyes useful as optical filter agents in photographic processes to protect a selectively exposed photosensitive material from further exposure during processing in the presence of incident light. Such dyes comprise 3,3-disubstituted 6-sulfonamido naphthalides wherein the 3,3 substituents are p-hydroxynaphthyl radicals.
Abstract:
DYE-DEVELOPER DIFFUSION TRANSFER COLOR PROCESSES AND ELEMENTS AND COMPOSITIONS FOR EMPLOYMENT THEREIN, COMPRISING A COMPOUND SELECTED FROM ALPHA AND GAMMA HYDROXY AND GAMMA AMINO SUBSTITUTED PYDRIDINES ADAPTED TO REACT WITH THE OXIDATION PRODUCTS OF THE DYE DEVELOPERS TO PROVIDE DURING PROCESSING A PRODUCT WHICH IS LESS DIFFUSIBLE IN THE PROCESSING COMPOSITION THAN THE SAID DYE DEVELOPER OXIDATION PRODUCTS.
Abstract:
Novel coupler developers for preparing color transfer images. Essentially the coupler developers contain a coupling moiety linked to a silver halide developing moiety.