Photographic system with salt of phenylmercaptoazole and quatern

Details Photographic system with salt of phenylmercaptoazole and quatern Photographic system with salt of phenylmercaptoazole and quatern

1984-12-19

1985-09-24

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...

430218, 430239, 430428, 430566, 430611, 430955, 430957, G03C 140, G03C 554, G03C 538

Patent

active

045433178

ABSTRACT:
There is described a photographic system wherein development of an exposed photosensitive element with an aqueous alkaline processing composition is effected in the presence of a compound which is a salt of a radical of a substituted phenylmercaptoazole complexed with a radical of a quaternary. The salts are either insoluble or have extremely low solubility in water and become soluble, and photographically active, in alkaline environment.

REFERENCES:
patent: 3173786 (1965-03-01), Green et al.
patent: 3816125 (1974-06-01), Demember et al.
patent: 4328302 (1982-05-01), Nishimura et al.
patent: 4390613 (1983-06-01), Mehta et al.

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