Photographic products and processes employing novel nondiffusibl

Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...

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Details

430222, 430226, 430241, 430242, 430562, G03C 140, G03C 110, G03C 554, G03C 700

Patent

active

043574114

ABSTRACT:
Photographic elements, diffusion transfer assemblages and processes are described which employ a novel nondiffusible compound having a releasable, 2-(2-pyridylazo)-4,5-bis(tertiary amino)phenol black dye moiety or precursor thereof, such as: ##STR1## wherein: (a) R represents hydrogen, a hydrolyzable moiety or CAR;

REFERENCES:
patent: 2864813 (1958-12-01), Bossard et al.
patent: 3051697 (1962-08-01), Lewis et al.
patent: 3118871 (1964-01-01), Brody et al.
patent: 4142891 (1979-03-01), Baigrie et al.
patent: 4195992 (1980-04-01), Stolzenburg et al.

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