| 摘要 |
PURPOSE:To obtain a silver halide photographic sensitive material having photographic characteristics, such as extremely high sensitivity and contrast exceeding 10 gamma, and a small amt. of black spots, by controlling the surface of an emulsion layer including a nonphotosensitive colloid layer including a nonphotosensitive colloid layer to <=5.8 in pH in a negative type silver halide photographic sensitive material contg. a hydrazine deriv.. CONSTITUTION:The negative type silver halide photographic sensitive material characterized by forming at least one silver halide emulsion layer on a support and incorporating a hydrazine compd. in an emulsion layer or other hydrophilic colloidal layers has the surface of the side of the emulsion layer including the nonphotosensitive hydrophilic colloidal layer controlled to <=5.8 in pH. This photosensitive material is imagewise exposed and then, processed with a developing soln. contg. sulfite ions in ions in a concn. of >=0.15 mol/l in a pH of 9.5-12.3, thus permitting the obtained photographic material to have characteristics of high sensitivity and high contrast and a small amt. of black spots effective for reproducing a dotted image and a line image.
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