Photographic material containing fine silver halide particles an

Details Photographic material containing fine silver halide particles an Photographic material containing fine silver halide particles an

1975-11-18

1976-06-01

Klein, David

Gas separation: apparatus

Electric field separation apparatus

Plural diverse electric fields

96100, 96107, 96120, G03C 148, G03C 128, G03C 140, G03C 102

Patent

active

039605680

ABSTRACT:
A silver halide photographic material having increased sensitivity and gradient and being free from fog formation on storage, comprising a support and an emulsion layer containing very fine silver halide grains and containing a nitrogen-containing heterocyclic organic compound having a hydroxylamino group, such as 2-hydroxylamino-4,6-di(ethylamino)-1,3,5-triazine or 2,4-di(hydroxylamino)-6-diethylamino-1,3,5-triazine. The photographic material is useful for recording fine images with a superior sharpness, and the incorporation of the heterocyclic compound increases the sensitivity in spite of the fine grain size of the silver halide.

REFERENCES:
patent: 2080019 (1937-05-01), White
patent: 3415650 (1968-12-01), Frame et al.
patent: 3645743 (1972-02-01), Mucke et al.
patent: 3905821 (1975-09-01), Ohtani et al.

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