Konica Corporation

Kazuya Kuramoto

Yasuo Tosaka

Tomomi Yoshizawa

Keiji Ogi

Yoshiyuki Nonaka

Bunzo Ueda

A direct positive type silver halide color photographic material and an image forming method are disclosed. A green sensitive emulsion layer of the photographic material comprises silver halide grains having at least two peaks on the size distribution curve thereof and the grain size corresponding to the smallest grain size peak among the peaks is not more than 0.3 .mu.m and a magenta coupler represented by the following Formula (M-I); ##STR1## wherein Z is a group of non-metal atoms necessary to complete a nitrogen-containing heterocyclic ring; X is a hydrogen atom or a split-off group and R is a substituent. The photographic material is developed with a color development in the presence of a fogging agent to directly form the positive image after imagewise exposure to light. Thus obtained image is improved in a increased maximum density, lowered minimum density and wider exposure latitude. Stability of gradation with respect to variation of development conditions is also improved.

Direct-positive silver halide photographic light-sensitive material and

A direct positive type silver halide photographic material and developing method therefor are disclosed. The photographic material have blue-, green- and red-sensitive emulsion layers and each of these emulsion layer contains at least two kinds of silver halide emulsion being different from each other in average grain size. The average grain diameter S of the emulsion having the smallest average grain size and the average grain diameter of the emulsion having the largest average grain size in each emulsion layer have a proportional relation of 1.6.ltoreq.L/S. The emulsion having the smallest average grain size is contained in a ratio of from 2 to 50% in the blue-sensitive layer and 2 to 40% in green- and red-sensitive emulsion layer.

Growing community of inventors

Odawara, Japan

Kazuya Kuramoto