Color-forming para-sulfonamidodiphenylamine dye precursor and su

Details Color-forming para-sulfonamidodiphenylamine dye precursor and su Color-forming para-sulfonamidodiphenylamine dye precursor and su

1982-07-01

1983-06-28

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Imaged product

430 17, 430364, 430375, 430405, 430409, 430440, 430448, 430542, 430955, G03C 700, G03C 140

Patent

active

043906060

ABSTRACT:
A color-forming para-sulfonamidodiphenylamine dye precursor in a photographic material and process enables formation of a sulfonimide dye image by means of cross-oxidation without the need for a coupling reaction. The color-forming para-sulfonamidodiphenylamine dye precursor is useful in a photographic silver halide material for producing (i) a dye image, or (ii) a dye image and silver image. The exposed photographic material is processed to produce (a) a positive dye image, (b) a negative dye and negative silver image, (c) a negative dye image or (d) a positive dye image and a positive silver image.

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patent: 4035184 (1977-07-01), Faul et al.
patent: 4368246 (1983-01-01), Gabrielsen et al.
Res. Disclosure, Dec. 1978, Item No. 17643.

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