Direct-positive emulsion containing fogged, silver halide grains

Details Direct-positive emulsion containing fogged, silver halide grains Direct-positive emulsion containing fogged, silver halide grains

1973-11-20

1981-09-01

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Positive

430567, 430596, 430412, 430597, 430444, 430599, 430604, 430605, 430570, G03C 524, G03C 136

Patent

active

042872960

ABSTRACT:
Direct positive silver halide emulsions are provided which contain fogged silver halide grains the said grains being heterodisperse and containing silver iodide in an amount of more than 10 mole % and at most 20 mole % relative to the total amount of silver halide. The emulsions have increased sensitivity and reduced gradation which is suitable for continuous tone reproduction.

REFERENCES:
patent: 2500140 (1950-03-01), Teal et al.
patent: 3320069 (1967-05-01), Illingsworth
patent: 3367778 (1968-02-01), Berriman
patent: 3501305 (1970-03-01), Illingsworth
patent: 3531290 (1970-09-01), Litzerman
patent: 3647455 (1972-03-01), Burt et al.
patent: 3740226 (1973-06-01), Dappen
patent: 3759713 (1973-09-01), Florens
patent: 3870522 (1975-03-01), Moisar et al.

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