Preformed silver halides for photothermographic system

Details Preformed silver halides for photothermographic system Preformed silver halides for photothermographic system

1985-09-06

1988-06-14

Louie, Won H.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Silver compound sensitizer containing

430620, 430627, 430569, G03C 102

Patent

active

047511761

ABSTRACT:
Method for preparing photosensitive silver halide crystals. A binder resin, a source of halide ions, and a source of silver ions are dissolved in an organic solvent, e.g., ethanol. Silver halide nuclei will then form. Additional source of halide ions and additional source of silver ions can be added to the solution in incremental additions, so that the initially-formed silver halide nuclei will grow. Upon removal of the solvent, the silver halide crystals will exist in a dry state, entrapped in the binder resin. Silver halide crystals formed and grown in this manner can be used to prepare photothermographic imaging compositions, which compositions will exhibit higher speed than photothermographic imaging compositions containing silver halide crystals grown according to conventional methods.

REFERENCES:
patent: 3003879 (1961-10-01), Priest et al.
patent: 3713833 (1973-01-01), Lindholm et al.
patent: 3871887 (1975-03-01), Jones
patent: 4242445 (1980-12-01), Saito
Research Disclosure 17643, Dec. 1978, pp. 22-23.

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