Method of manufacturing silver halide emulsions and apparatus thereof
AssigneeFuji Photo Film Co., Ltd.
InventorHirokazu Saito
Life of this patent
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Abstract
A high velocity jet of aqueous silver salt solution through the first tubing and a high velocity jet of aqueous halide salt solution through the second tubing are forced to merge in the merging zone to induce mixing action by means of kinetic energy of the fluid in the merging zone, aqueous hydrophilic dispersant solution in the third tubing is then supplied continuously between the two high velocity jets which have already merged to mix the three solutions in the merging zone instantaneously, and the mixed solution containing silver halide particles which have been formed by reaction caused by the mixing is immediately removed out of the merging zone.
Claims8
A method of manufacturing a silver halide emulsion, consisting essentially of:
- forcing a jet of aqueous silver salt solution and a jet of aqueous halide salt solution to merge in a merging zone to induce mixing action by means of kinetic energy of fluid in the merging zone;
- continuously supplying aqueous hydrophilic dispersant solution between the two jets to mix the three solutions instantaneously;
- and
- immediately removing the mixed solution containing silver halide particles which have been formed by reaction caused by the mixing out of the merging zone.
A method of manufacturing a silver halide emulsion, wherein:
- a jet of aqueous silver salt solution and a jet of aqueous halide salt solution are forced to merge in a merging zone to induce mixing action by means of kinetic energy of fluid in the merging zone;
- aqueous hydrophilic dispersant solution is supplied continuously between the two jets to mix the three solutions instantaneously;
- and
- the mixed solution containing silver halide particles which have been formed by reaction caused by the mixing is immediately removed out of the merging zone, wherein a concentration of said aqueous silver salt solution is not less than 0.3 mol/l and not more than 4 mol/l.
Dependencies are inferred from the claim text.