Method for producing silver halide emulsion and silver halide photographic emulsion
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United States of America Patent
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Nov 16, 1999
Grant Date -
N/A
app pub date -
Dec 23, 1997
filing date -
Dec 26, 1996
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Abstract
A method for producing a silver halide emulsion is disclosed, which comprises: supplying a water-soluble silver salt aqueous solution and a water-soluble halide aqueous solution from solution-feeling ports provided in a closed type stirring tank of a mixing vessel, controlling the stirring condition of the mixture of aqueous solutions supplied by rotation-driving at least one pair of stirring blades having no rotary shaft protruding the wall of the stirring tank, which are disposed in said stirring tank; discharging silver halide fine grains which are formed with the completion of the stirring process from a solution-discharging port provided in a closed type stirring tank; and supplying said silver halide fine grains to a reaction vessel where nucleation and/or grain growth of silver halide grains are conducted, and further a silver halide photographic emulsion comprising a dispersion medium and silver halide grains produced by the above method is disclosed.
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