Silver halide photographic sensitive material

Abstract

Abstract PURPOSE:To decrease the deterioration in performance at the time of continuous processing and the generation of high contrast black dots by incorporating two kinds of different monodisperse silver halide emulsions and a hydrazide compd. which releases a development restrainer into a titled material. CONSTITUTION:Two kinds of the different monodisperse silver halide emulsions having <=0.5mum average grain size and >=0.1mum average grain size and the hydrazide compd. which releases the development restrainer when attacked by a nucleophilic agent after oxidation by the oxidation product of a developing agent are incorporated in to the above-mentioned photosensitive material. Namely, this compd. is the hydrazide compd. in which the photographically useful group part is bonded by the combination group contg. an acidic group or the combination group contg. the active methylene group substd. by the acidic group. This hydrazide compd. is cloven in the bond to the development restraining part and releases the development restrainer when said compd. is attacked by the nucleophilic agent after the compd. is oxidized to the azo group by the oxidation product of the developing agent. The change in the sensitivity and dot quality is thereby obviated over a long period of time and the image which decreases the generation of the black spots is obtd.

Inventors

• 👤 Yutaka Uesawa
• 👤 Takeshi Haniyu

Bibliographic Details