Fogged, direct-positive silver halide emulsion containing desens

Details Fogged, direct-positive silver halide emulsion containing desens Fogged, direct-positive silver halide emulsion containing desens

1974-03-27

1976-03-23

Louie, Jr., Won H.

Gas separation: apparatus

Electric field separation apparatus

Collecting electrode details

96107, 96108, 96101, 96129, 96130, 260240E, G03C 136, G03C 128, G03C 102

Patent

active

039458326

ABSTRACT:
A direct positive silver halide photographic emulsion containing
1. at least one dimethine dye having the general formula (I): ##EQU1## 2. AT LEAST ONE COMPOUND HAVING THE GENERAL FORMULA (II): ##SPC1##
3. at least one compound having the general formula (III) ##EQU2## or the general formula (IV) ##SPC2##
wherein Y, Y.sub.o, Z, L.sub.1, L.sub.2, R.sub.o, m, n, X, Z.sub.1, R.sub.1, X.sub.1, a, p, q, Y.sub.1, Y.sub.2, m.sub.1, R.sub.3, r, X.sub.2 and X.sub.3 are as hereinafter defined.

REFERENCES:
patent: 2669515 (1954-02-01), Kendall et al.
patent: 3035917 (1962-05-01), Fry et al.
patent: 3124458 (1964-03-01), Fry et al.
patent: 3367778 (1968-02-01), Berriman
patent: 3628958 (1970-03-01), Haefner
patent: 3816138 (1974-06-01), Ohlschlager
patent: 3832184 (1974-08-01), Sato et al.

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