Silver halide precipitation process with deletion of materials

Details Silver halide precipitation process with deletion of materials Silver halide precipitation process with deletion of materials

1981-07-06

1982-06-08

Louie, Jr., Won H.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430569, G03C 102

Patent

active

043340121

ABSTRACT:
An improved silver halide precipitation process of preparing a dispersion of silver halide grains is disclosed. The process comprises forming a radiation-sensitive silver halide dispersion by reacting silver and halide salts in solution within a dispersing medium to form silver halide grain nuclei within the dispersing medium and allowing silver halide grain growth to occur in a reaction vessel in which the silver halide grain nuclei and the dispersing medium are present. The improvement comprises, while increasing silver halide present in the dispersing medium during silver halide grain growth, reducing the volume of the dispersion by separating a portion of the dispersing medium while retaining the silver halide grains within the remaining dispersion.

REFERENCES:
patent: 3326641 (1967-06-01), Audran et al.
patent: 3790386 (1974-02-01), Posse et al.
patent: 3801326 (1974-04-01), Claes
patent: 3897935 (1975-08-01), Forster et al.
patent: 4046576 (1977-09-01), Terwilliger et al.
patent: 4147551 (1979-04-01), Finnicum et al.
patent: 4171224 (1979-10-01), Verhille et al.
Research Disclosure, vol. 102, Oct. 1972, Item 10208.
Research Disclosure, vol. 131, Mar. 1975, Item 13122.

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