Direct-positive photographic materials containing a nucleator in

Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing

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430940, 430487, G03C 1295

Patent

active

052831671

ABSTRACT:
A direct-positive image-forming photographic material comprises a supporting substrate bearing a light sensitive, nonprefogged silver halide photographic emulsion capable of forming an internal latent image and includes a water-insoluble nucleator. The nucleator is incorporated in the photographic material in the form of a solid particle dispersion to improve the storage stability of the photographic material. The development rate of the photographic material may be increased by use of a developer containing an activator for the nucleator.

REFERENCES:
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patent: 4140530 (1979-02-01), Trunley et al.
patent: 4474872 (1984-10-01), Onishi et al.
patent: 4801520 (1989-01-01), Inoue et al.
patent: 4855220 (1989-08-01), Szajewski
patent: 4857446 (1989-08-01), Diehl et al.
patent: 4880729 (1989-07-01), Heki et al.
patent: 4900653 (1990-02-01), Factor et al.
English language translation of German OFF DE 3,721,570 dated Jan. 7, 1988.

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