Production method of photographic silver halide emulsion

Details Production method of photographic silver halide emulsion Production method of photographic silver halide emulsion

1997-04-07

1999-12-07

Huff, Mark F.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430600, 430613, G03C 110, G03C 1015, G03C 1035

Patent

active

059981245

ABSTRACT:
A method for producing a photographic silver halide emulsion containing silver halide grains having a silver chloride content of 50 mol % or more and at least 30% of the surface area of the grains comprising [111] faces is disclosed, wherein the silver halide grains are formed in the presence of at least one kind of compounds represented by formula (I): ##STR1## wherein R.sub.1 represents an alkyl group, an alkenyl group, or an aralkyl group; R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 each represents a hydrogen atom or a group capable of substituting for the hydrogen atom, R.sub.2 and R.sub.3, R.sub.3 and R.sub.4, R.sub.4 and R.sub.5, and R.sub.5 and R.sub.6 each may be ring-condensed, provided that at least one of R.sub.2, R.sub.3, R.sub.4, R.sub.5, and R.sub.6 represents an aryl group; and X.sup.- represents a counter anion.

REFERENCES:
patent: 4983508 (1991-01-01), Ishiguro et al.
patent: 5432052 (1995-07-01), Ohshima
patent: 5691128 (1997-11-01), Ohzeki et al.

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