Silver halide emulsion, silver halide photographic material and its processing, and methods forming images
AssigneeFuji Photo Film Co., Ltd.
InventorsTakayoshi Oyamada, Seiji Yamashita
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Abstract
A tabular silver halide emulsion having a Cl content of 10% or more, which has high covering power, high sensitivity and low fogging property, prepared by adding fine silver halide grains in an amount corresponding to 20% or more of the total silver amount under the condition of pH 5.5 or more and/or pCl 1.6 or more during the course of growth of crystals after nucleation to allow the crystals to grow, and a photographic material using the same, and further a method for developing the photographic material and an image-forming method.
Claims7
A method for preparing a tabular silver halide emulsion having a Cl content of from 40 to 100 mol %, said method comprising adding fine silver halide grains in an amount corresponding to from 50 to 87% of the total silver amount under the condition of pH 5.5 or more and pCl 1.6 or more during the course of growth of crystals after nucleation, and subjecting the crystals to physical ripening to allow the crystals to grow, wherein the emulsion comprises tabular silver halide grains each having a (100) plane as a principal plane, and wherein the Cl content of said fine silver halide grains is from 50 to 100%.
Dependencies are inferred from the claim text.