ハロゲン化銀写真乳剤、及びハロゲン化銀写真感光材料

Silver halide photographic emulsion and silver halide photographic sensitive material

Abstract

(57)【要約】 【課題】 高感度で低カブリであり、かつ粒状性に優れ たハロゲン化銀乳剤及びハロゲン化銀写真感光材料の提 供。 【解決手段】 分散媒と平均沃化銀含有率が3モル%以 上のハロゲン化銀粒子を含むハロゲン化銀乳剤におい て、該ハロゲン化銀粒子の投影面積の50%以上がアス ペクト比が3以上の平板状ハロゲン化銀粒子であり、か つ該アスペクト比が3以上の平板状ハロゲン化銀粒子の 表面積の変動係数が30%以下であることを特徴とする ハロゲン化銀写真乳剤及びハロゲン化銀写真感光材料。
PROBLEM TO BE SOLVED: To provide the silver halide photographic emulsion and the silver halide photographic sensitive material both high in sensitivity and low in fog and superior in graininess. SOLUTION: This emulsion contains silver halide emulsion grains having an average silver iodide content of >=3mol%. In this case, the above-mentioned silver halide grains comprises flat silver halide grains having an aspect ratio of >=3 in >=50% of the projection areas of the total silver halide grains and the above flat silver halide grains have a variation coefficient of the surface areas of <=30%.

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