Dying etched-bleached silver images using dye solutions with glycol ether
AssigneeMitsubishi Paper Mills Limited
InventorsYasuo Tsubai, Koji Okazaki, Akio Yoshida
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Abstract
Disclosed is a process for forming a colored photographic image, wherein a photographic material bearing a silver image is subjected to an etching-bleach treatment and the unbleached areas are colored with a coloring solution to form a colored image, which comprises before or/and after said etching-bleach treatment coloring said photographic material with a coloring solution containing at least a water-soluble dye and a glycol ether. Thus obtained colored image may be further transferred to another substrate material.
Claims16
A process for forming a colored photographic image, wherein a photographic material bearing a silver image present in a hydrophilic protein binder is subjected to an etching-bleach treatment and the unbleached areas are colored with a coloring solution to form a colored image, which comprises before or/and after said etching-bleach treatment coloring said photographic material with an aqueous coloring solution containing at least a water-soluble dye and a glycol ether and having a pH of about 6 or less.
Dependencies are inferred from the claim text.