Direct positive photographic material

Details Direct positive photographic material Direct positive photographic material

1991-01-11

1993-02-09

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430597, 430603, 430604, 430608, 430611, G03C 178

Patent

active

051852411

ABSTRACT:
Disclosed is a direct positive photographic material comprising a support having thereon at least one photographic emulsion layer containing previously non-fogged internal latent image-type silver halide grains, wherein the photographic emulsion layer contains at least one compound of formulae (I), (II) and (III) preferably along with at least one compound of formulae (IV), (V) and (VI), and that the internal latent image-type silver halide grains are silver bromide, silver chloride, silver iodobromide, silver chlorobromide or silver chloroiodobromide grains and contain at least one metal of manganese, copper, zinc, cadmium, rhenium, lead, bismuth, indium, thallium, zirconium, lanthanum, chromium, mercury and metals of Group VIII of the Periodic Table.

REFERENCES:
patent: 3977880 (1976-08-01), Saito
patent: 4395478 (1983-07-01), Hoyen
patent: 4880729 (1989-11-01), Heki
patent: 4954427 (1990-09-01), Inoue
patent: 4966833 (1990-10-01), Inoue
patent: 4966836 (1990-10-01), Inoue
patent: 4968592 (1990-11-01), Deguchi
patent: 4968596 (1990-11-01), Inoue
patent: 4981780 (1991-01-01), Inoue et al.

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