METHOD OF PREPARING SILVER HALIDE PHOTOGRAPHIC EMULSION Russian patent published in 1998 - IPC

Abstract RU 2110083 C1

FIELD: photographic emulsions. SUBSTANCE: emulsion mainly containing hexagonal silver bromide T crystals is prepared by method of physical maturing of fine-grain emulsion in presence of potassium thiocyanate. Synthesis of fine-grain emulsion is effected via controlled two-jet crystallization followed by setting up pBr value to 2.0-4.0, adding potassium thiocyanate solution to concentration 0.03-0.05 M, and performing maturing. EFFECT: increased uniformity of T crystals. 1 tbl

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RU 2 110 083 C1

Authors

Kagakin E.I.

Larichev T.A.

Dates

1998-04-27—Published

1995-01-30—Filed