Photographic composition containing primary aromatic amino...

G - Physics – 03 – C

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G03C 5/30 (2006.01) G03C 7/413 (2006.01)

Patent

CA 1108912

PHOTOGRAPHIC COLOR DEVELOPER COMPOSITIONS ABSTRACT OF THE DISCLOSURE An hydroxylamine and a member selected from the group consisting of alkanolamines which are free of carboxyl substitution, aliphatic monoamino monocarbox- ylic acids of up to three carbon atoms, and aminoben- zoic acids, are employed in combination in a photo- graphic color developing composition comprising a pri- mary aromatic amino color developing agent for the purpose of retarding aerial oxidation of the developing agent. This combination can be used to replace all or part of the sulfite that is commonly employed in color developers, to thereby avoid or reduce the disadvantages resulting from the fact that sulfite competes with couplers for oxidized developing agent

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