Method of treating a dye image

Details Method of treating a dye image Method of treating a dye image

1982-06-28

1984-03-13

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Imaged product

Nonsilver image

430402, 430565, 430427, 430430, G03C 300, G03C 524

Patent

active

044367988

ABSTRACT:
Method of treating a dye image in photographic material which dye image has been formed by the color coupling reaction of a primary aromatic amine color developing agent with a phenolic color coupler of the formula ##STR1## where T is hydroxy or amino, one of R.sub.1 and R.sub.3 is the coupling position and if it is the coupling position the substituent group is hydrogen or halogen, a nitrogen-linked heterocycle or a mercapto group, the other of R.sub.1 and R.sub.3 and R.sub.2 and R.sub.4 are each hydrogen or halogen or optionally substituted organic groups, or one or R.sub.1 and R.sub.2 together or R.sub.2 and R.sub.3 together may represent the atoms necessary to complete a benzannelated ring, which treatment method comprises treating the dye image with an aqueous solution which comprises a salt of a transition (b-sub group) metal, the concentration of the metal ion in the aqueous solution being at least 10.sup.-4 M.
With this method the spectral absorption range of dye images formed by the above phenolic or naphtholic coupler compounds can be increased or altered. Further the resistance of these dye images to fading by actinic light can be increased over a long period.

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patent: 4200466 (1980-04-01), Fujiwhara et al.
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Handbook of Chemistry and Physics, 48th Ed., The Chemical Rubber Co., Cleveland, Ohio, 1967.

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