Photosensitive compositions and elements containing substituted hydroxylamine

Claim 1

A photosensitive composition comprising an admixture of (A) a photooxidant compound, (B) a leuco dye that is oxidizable to dye by the photooxidant, and (C) a hydroxylamine compound of the formula R 1 R 2 NOH, and acid salts thereof, wherein each of R 1 and R 2 can be hydrogen with the proviso that both cannot be hydrogen, a linear or branched-chain alkyl group of 2 to 14 carbon atoms, a cyclic alkyl group of 5 to 14 carbon atoms, an aryl group of 6 to 10 carbon atoms, an aralkyl group wherein the aryl moiety is of 6 to 10 carbon atoms and the alkyl moiety is of 1 to 14 carbon atoms, and an alkaryl group wherein the aryl moiety is of 6 to 10 carbon atoms and the alkyl moiety is of 1 to 9 carbon atoms, and R 1 and R 2 when taken together may with the nitrogen atom form a heterocyclic ring of 5 to 7 carbon atoms.