Method of producing silver halide photographic emulsion

Details Method of producing silver halide photographic emulsion Method of producing silver halide photographic emulsion

1994-04-14

1995-05-30

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430567, G03C 1005, G03C 1015

Patent

active

054200075

ABSTRACT:
A method for preparing silver halide emulsion which comprises silver halide grains containing an average iodide content of not more than 2 mol % comprising the steps of (i) preparing a seed emulsion containing silver halide seed grains, (ii) introducing the seed emulsion into a reaction vessel containing a hydrophilic colloid solution and (iii) introducing into the reaction vessel a silver salt and a halide salt to grow the silver halide grains from the seed grains, wherein in the step (iii), an emulsion containing silver iodide fine grains previously formed is supplied into the reaction vessel as a source of silver iodide; said seed grains are contained in an amount of 0.5 to 5.0% by volume in the hydrophilic colloid solution in the reaction vessel prior to introduction of silver and halide salts.

REFERENCES:
patent: 4798775 (1989-01-01), Yagi et al.
patent: 5204235 (1993-04-01), Yamamoto et al.

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