Direct positive silver halide color photographic sensitive material

Abstract

Abstract PURPOSE:To improve stability of processability by incorporating at least 2 kinds of internally latent image type silver halide grains different in average grain diameter in a silver halide emulsion layer and a compound capable of reacting with the oxidation product of a color developing agent and releasing a development inhibitor or its precursor in one of photographic constituent layers. CONSTITUTION:The silver halide emulsion layer contains at least 2 kinds of internally latent image type silver halide grains different in average grain diameter, and at least one of photo graphic constituent layers contains at least one of compounds each capable of reacting with the oxidation product of a color developing agent and releasing a development inhibitor or its precursor (DIR compound). The internally latent image type silver halide grains, prefer ably, contain 60wt% grains within + or -20% of the average grain diameter, and preferable DIR compounds can be represented by formula (I) Coup-Inhibitor and (II) Coup-TIME-Inhibitor in which Coup is a coupler component capable of coupling with the oxidation product of a color developing agent, and Inhibitor is a group to be released by the coupling reaction with the oxidation product of a color developing agent, and suppresses the development of silver halide, thus permitting the obtained photosensitive material to have good stable processability and to obtain a photographic image smooth in gradation and good in sharpness with high reproducibility.

Inventors

• 👤 Yasuo Tosaka
• 👤 泰雄 登坂
• 👤 Keiji Ogi
• 👤 荻　啓二
• 👤 Atsushi Kamitakahara
• 👤 上高原　篤

Bibliographic Details