Chelatable 4-thienyl imidazole azo dyes, their use in color phot

Details Chelatable 4-thienyl imidazole azo dyes, their use in color phot Chelatable 4-thienyl imidazole azo dyes, their use in color phot

1984-03-27

1985-06-18

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, 430223, 430242, 430562, G03C 140, G03C 554

Patent

active

045241236

ABSTRACT:
Azo dyes corresponding to the formula (II): ##STR1## wherein G represents a group capable of forming a 5-membered chelate ring and R.sup.5 represents aryl or a thienyl group, combined with metal ions, in particular copper or nickel ions, to form stable azo dye-metal complexes which have advantageous spectral properties. They are therefore particularly suitable for the production of highly light-fast cyan images, e.g. by the Ink-Jet process, in which they may be used directly in the form of colored inks, or by the dye diffusion transfer process, in which they are released image-wise from corresponding dye-releasers in the course of development and transferred to a dye-absorbent layer.

REFERENCES:
patent: 4142891 (1979-03-01), Baigrie et al.
patent: 4396710 (1983-08-01), Bergthaller et al.
patent: 4418143 (1983-11-01), Bergthaller et al.

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