Process for preparing silver halide emulsion and silver halide X

Details Process for preparing silver halide emulsion and silver halide X Process for preparing silver halide emulsion and silver halide X

1990-06-20

1992-05-19

Bowers, Jr., Charles L.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

G03C 1015

Patent

active

051148382

ABSTRACT:
A process for treating a tabular silver halide emulsion is disclosed comprising the steps of subjecting the tabular silver halide emulsion to reduction sensitization and to sulfur sensitization or selenium sensitization and/or gold sensitization in the presence of a nitrogen-containing heterocyclic compound which forms a complex with silver during the manufacture of the tabular silver halide emulsion, said tabular emulsion having a grain size distribution such that grains having an average aspect ratio of not lower than 3.0 constitute at least 50% of the total projected area of all of the silver halide grains. There is also disclosed a silver halide X-ray photographic material comprising a support having thereon at least one silver halide emulsion layer containing a tabular silver halide emulsion prepared in accordance with the above process.

REFERENCES:
patent: 4401754 (1983-08-01), Suzuki et al.
patent: 4835095 (1989-05-01), Ohashi et al.
patent: 4888273 (1989-12-01), Himmelwright et al.
patent: 4945036 (1990-07-01), Arai et al.
Research Disclosure No. 225, Jan. 1983, pp. 20-58.

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