Direct positive photographic material

Details Direct positive photographic material Direct positive photographic material

1989-10-16

1991-04-23

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430409, 430410, 430510, 430598, 430603, 430604, G03C 109

Patent

active

050099930

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: 2688601 (1954-09-01), Herz
patent: 3392021 (1968-07-01), McGuckin

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