Photographic elements containing direct-positive emulsions and p

Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Positive

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

Patent

active

044448740

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 trapping photolytically generated electrons are both present. The photographic elements are capable of exhibiting increased covering power, greater maximum density, and increased speed.

REFERENCES:
patent: 2456953 (1948-12-01), Knott et al.
patent: 2592250 (1952-04-01), Davey et al.
patent: 3206313 (1965-09-01), Porter et al.
patent: 3600180 (1971-08-01), Judd et al.
patent: 3615573 (1971-10-01), Smith et al.
patent: 3761276 (1973-09-01), Evans
patent: 3846128 (1974-11-01), Thomas et al.
patent: 3846135 (1974-11-01), Helmig et al.
patent: 3850637 (1974-11-01), Evans
patent: 3854953 (1974-12-01), Shiba et al.
patent: 3923513 (1975-12-01), Evans
patent: 3942986 (1976-03-01), Florens
patent: 4035185 (1977-07-01), Atwell et al.
Zelikman and Levi, Making and Coating Photographic Emulsions, Focal Press, 1964, pp. 234-238.

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