Method for forming silver halide emulsion comprising forming sil

Details Method for forming silver halide emulsion comprising forming sil Method for forming silver halide emulsion comprising forming sil

1985-02-04

1986-12-23

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430567, 430611, 430613, G03C 102, G03C 106

Patent

active

046312536

ABSTRACT:
A photographic material is described, comprising a support and at least one silver halide emulsion layer which contains nearly uniform and large size silver halide grains formed in the presence of a novel silver halide solvent represented by formula (I) ##STR1## wherein R.sup.1 and R.sup.2 each represents an unsubstituted or substituted alkyl group, alkenyl group, cycloalkyl group, aralkyl group, aryl group, or heterocyclic group; R.sup.3 represents an unsubstituted or substituted alkyl group, alkenyl group, cycloalkyl group, aralkyl group, aryl group, --NR.sup.4 R.sup.5, a heterocyclic group; and R.sup.4 and R.sup.5 each represents a hydrogen atom, an alkyl group or an aryl group; and wherein R.sup.1 and R.sup.2 or R.sup.2 and R.sup.3 can combine with each other to form a 5- or 6-membered ring.

REFERENCES:
patent: 4378424 (1983-03-01), Altland et al.

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