Abstract:
NOVEL METAL-COMPLEXED AZOMETHINE DYES WHICH ARE ALSO SILVER HALIDE DEVELOPING AGENTS, NOVEL NON-COMPLEXED AZOMETHINES USEFUL IN THE PREPARATION OF THE SAME, AND NOVEL PHOTOGRAPHIC SYSTEMS AND PROCEDURES REMPLOYING THE AFOREMENTIONED METAL COMPLEXES TO OBTAIN COLOR IMAGES, PARTICULARLY SYSTEMS AND PROCEDURES FOR PREPARING COLOR IMAGES BY DIFFUSION TRANSFER.
Abstract:
This invention relates to a class of phthalein 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 indicident light. Such dyes comprise 3,3-disubstituted phthalides and 3,3disubstituted naphthalides wherein the 3,3 substituents are parahydroxy polycyclic aryl radicals possessing a nitrogen atom included in the ring system adjacent to the para-hydroxy group.
Abstract:
LIGANDS OR CO-ORDINATING AGENTS WHICH WILL FORM A CO-ORDINATION COMPLEX WITH A METAL AND WHICH ALSO INCLUDE A SILVER HALIDE DEVELOPING FUNCTION PARTICULARLY A PARADIHYDROXYPHENYL SILVER HALIDE DEVELOPING FUNCTION OR A SUBSTITUTED DERIVATIVE THEREOF, THEREBY MAKING THEM ADDITIONALLY USEFUL IN PHOTOGRAPHY.
Abstract:
PHOTOGRAPHIC PRODUCTS, PROCESSES AND COMPOSITIONS FOR FORMING DYE IMAGES EMPLOYING A METAL-COMPLEXED DYE HAVING BONDED TO THE METAL-COMPLEXING ATOM BY AT LEAST ONE COORDINATING ATOM A SUBSTANTIALLY COLORLESS LIGAND CONTAINING A SILVER HALIDE DEVELOPING FUNCTION, WHICH COMPLEXES MAY BE ILLUSTRATED SCHEMATICALLY AS FOLLOWS: