Photographic silver halide emulsion
AssigneeFuji Photo Film Co., Ltd.
InventorsMitsuo Saitou, Masaaki Miki, Katsuhisa Ohzeki
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Abstract
A producing method of a silver halide emulsion comprising the steps of adding silver halide fine grains AgX0 having an to a silver halide seed crystal emulsion containing at least water, dispersion medium 1 and silver halide crystal, and growing the seed crystal by dissolving the added AgX0, wherein AgX0 are formed in dispersion medium solution 2 containing dispersion medium 2, the pH of dispersion medium solution 2 of the time when AgX0 are formed is from 7.3 to 12.2, the average equivalent-circle projected area diameter of AgX0 is from 0.001 to 0.2 μm, and AgX0 are non-twin crystal grains not substantially having twin planes.
Claims9
A producing method of a silver halide emulsion comprising the steps of adding silver halide fine grains AgX0 to a silver halide seed crystal emulsion containing at least water, dispersion medium 1 and silver halide crystal, and growing the seed crystal by dissolving the added AgX0, wherein AgX0 are formed in dispersion medium solution 2 containing dispersion medium 2, the pH of dispersion medium solution 2 of the time when AgX0 are formed is from 7.3 to 12.2, the average equivalent-circle projected area diameter of AgX0 is from 0.001 to 0.2 μm, and AgX0 are non-twin crystal grains not substantially having twin planes.
Dependencies are inferred from the claim text.