Photographic elements containing direct-positive emulsions and p

Details Photographic elements containing direct-positive emulsions and p Photographic elements containing direct-positive emulsions and p

1984-07-02

1986-05-20

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Positive

430502, 430509, 430567, 430410, 430598, 430603, 430605, 430608, 430564, 430940, G03C 524

Patent

active

RE0321494

ABSTRACT:
Photographic elements particularly adapted for forming direct-positive images are disclosed in which a radiation-sensitive core-shell emulsion layer and a silver halide emulsion layer incapable of forming a surface latent image within the direct-positive exposure latitude of the first emulsion layer and containing a grain population capable of internally forming a latent image by internally trapping photolytically generated electrons are both present. The photographic elements are capable of exhibiting increased covering power, greater maximum density, and increased speed.

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Research Disclosure, vol. 163, Nov. 1977, Item 16345.
Zelikman and Levi, Making and Coating Photographic Emulsions, Focal Press, 1964, pp. 234-238.

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