Chemical development of a silver halide emulsion containing an a

Details Chemical development of a silver halide emulsion containing an a Chemical development of a silver halide emulsion containing an a

1976-02-06

1977-03-22

Louie, Jr., Won H.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96109, 96110, 96 87R, G03C 524, G03C 134, G03C 178

Patent

active

040134695

ABSTRACT:
Light-sensitive silver halide photographic materials containing, as an anti-foggant, a compound of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are individually an aryl or aralkyl group; Z is N, P, As or Sb; and X is an anion. The compositions are particularly suitable for use on polyester supports.

REFERENCES:
patent: 2238632 (1941-04-01), Dersch et al.
patent: 2288586 (1942-06-01), Dersch et al.
patent: 2628167 (1953-02-01), Overman
patent: 3161506 (1964-12-01), Becker
patent: 3486901 (1969-12-01), Karlson
patent: 3827886 (1974-08-01), Ishihra et al.

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