Silver halide precipitation and methine dye spectral sensitizati

Details Silver halide precipitation and methine dye spectral sensitizati Silver halide precipitation and methine dye spectral sensitizati

1979-02-02

1980-09-30

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430570, 430581, 430591, 430592, G03C 102, G03C 116

Patent

active

042256666

ABSTRACT:
A method of precipitating silver halide is disclosed in which a methine spectral sensitizing dye is introduced into the reaction vessel in which precipitation of silver halide is performed after nucleation of the silver halide grains has occurred and before completion of silver halide precipitation. The silver halide grains spectrally sensitized in this manner exhibit relatively high minus blue speeds.

REFERENCES:
patent: 785219 (1905-03-01), Kieser
patent: 2735766 (1956-02-01), Hill
patent: 3628960 (1971-12-01), Philippaerts et al.
patent: 3883355 (1975-05-01), Walworth
patent: 3917485 (1975-11-01), Morgan
patent: 4060419 (1977-11-01), Gerber et al.
Reinders, "Studies of Photohalide Crystals", Kolloid-Zeitschrift, vol. 9, pp. 10-14, 1911.

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