Method of making silver halide emulsions

Details Method of making silver halide emulsions Method of making silver halide emulsions

C - Chemistry, Metallurgy

01

G

23/149, 96/94

C01G 5/00 (2006.01) G03C 1/015 (2006.01)

Patent

CA 1076776

ABSTRACT OF THE DISCLOSURE The present invention is directed to a method for forming the crystals of a photographic silver halide emulsion which comprises crystallizing silver halide grains from a solution of a water-soluble silver halide complex. The crystals may be sensitized before the binder is added. Thus by the process of this invention the crystal size is not controlled by the presence of a colloid binder material which provides an environment permitting crystal growth, but is controlled by the specific conditions employed in breaking the water-soluble silver halide complex. Since the colloidal binder is not present during the silver halide precipitation, this process permits a far wider choice of binder materials in formulating photographic emulsions.

183749

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