Direct positive photographic material

Details Direct positive photographic material Direct positive photographic material

1987-09-28

1989-11-14

Martin, Roland E.

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430940, G03C 716

Patent

active

048807273

ABSTRACT:
A direct positive photographic material comprising a support having provided thereon one or more hydrophilic colloid containing layers, wherein at least one of said hydrophilic colloid containing layers is an internal latent image type silver halide emulsion which has not been previously fogged and at least one of said emulsion layer or other hydrophilic colloid containing layer contains a colloidal metal or a colloidal water-insoluble metallic sulfide, selenide or telluride, and a method for forming a direct positive from the direct positive photographic material in which a light-sensitive material contains at least two layers containing colloidal silver.

REFERENCES:
patent: 4613563 (1986-09-01), Murai
patent: 4749644 (1988-06-01), Tosaka et al.

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