Photographic products employing nondiffusible metal-complexed az

Details Photographic products employing nondiffusible metal-complexed az Photographic products employing nondiffusible metal-complexed az

1981-11-23

1982-11-09

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430222, 430226, 430563, G03C 140, G03C 554, G03C 110, G03C 700

Patent

active

043585272

ABSTRACT:
Photographic elements and diffusion transfer assemblages are described which employ a nondiffusible compound having a releasable azo dye moiety or precursor thereof having the following formula: ##STR1## wherein: (a) each Z and Z' represents the atoms necessary to complete an aromatic carbocyclic or heterocyclic nucleus having at least one ring of 5 to 7 atoms; each Z' having, in a position adjacent to the point of attachment to the azo linkage, either (i) a nitrogen atom in the ring of the nucleus which acts as a chelating site, or (ii) a carbon atom in the ring of the nucleus having directly attached thereto a nitrogen atom which acts as a chelating site;

REFERENCES:
patent: 4076529 (1978-02-01), Fleckenstein et al.
patent: 4142891 (1979-03-01), Baigrie et al.
patent: 4165238 (1979-08-01), Anderson et al.
patent: 4174221 (1979-11-01), Idelson
patent: 4207104 (1980-06-01), Chapman et al.
patent: 4287292 (1981-09-01), Chapman et al.
Research Disclosure, No. 15654, 4/77, pp. 32-39.

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