Silver halide photographic emulsions for use in flash exposure

Details Silver halide photographic emulsions for use in flash exposure Silver halide photographic emulsions for use in flash exposure

1977-10-28

1979-04-03

Brown, J. Travis

Gas separation: apparatus

Electric field separation apparatus

With means to add charged solid or liquid particles to...

G03C 504

Patent

active

041475429

ABSTRACT:
A silver halide photographic material for use in flash exposure of less than 1/10000 second comprising 10.sup.-8 to 5.times. 10.sup.-7 moles/moles of silver halide of at least one compound belonging to Group VIII of the Periodic Table and at least one of the sensitizing dyes of the following formulas (I) or (II) and which is capable of sensitizing silver halide at less than 55 nm:
General Formula I ##STR1## General Formula II ##STR2## WHEREIN R, R.sub.1, R.sub.2, R.sub.3, Q, X.sup.(-), Z, Z.sub.1, Z.sub.2, n, n.sub.1, n.sub.2 and n.sub.3 are as defined in the specification.

REFERENCES:
patent: 3955979 (1976-05-01), Shiba et al.
patent: 3969116 (1976-07-01), Shiba et al.
patent: 3982950 (1976-09-01), Shiba et al.

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