Photographic material containing fogged, direct positive silver

Details Photographic material containing fogged, direct positive silver Photographic material containing fogged, direct positive silver

1972-11-20

1976-03-02

Louie, Jr., Won H.

Gas separation: apparatus

Electric field separation apparatus

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

96452, 96 64, 96 61R, 96 63, 96 68, 96 69, 96107, 96108, G03C 176, G03C 128, G03C 504

Patent

active

039415953

ABSTRACT:
Equidensity images can be produced by imagewise exposure and photographic processing of a photographic material containing at least two silver salt emulsions which may be arranged in one layer as a mixture or in two layers, wherein one silver salt emulsion is a fogged direct positive emulsion and the other is a negative emulsion.

REFERENCES:
patent: 2996382 (1961-08-01), Luckey et al.
patent: 3146105 (1964-08-01), Wrisley et al.
patent: 3178282 (1965-04-01), Luckey et al.
patent: 3607278 (1971-09-01), Ditzer et al.
patent: 3615443 (1971-10-01), Smith
patent: 3637388 (1972-01-01), Ranz et al.
patent: R25885 (1965-10-01), Yackel et al.

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