Silver halide colour photographic sensitive material

Abstract

A silver halide photosensitive material for color photography, which has unit blue sensitivity, unit green sensitivity and unit red sensitivity halide on a support body composed of two or more photosensitive emulsion layers with the same color sensitivity but different sensitivity The silver emulsion layer contains one or more compounds of the following general formula (I) or (II), and more than 60% of the total projected area of ​​the silver halide grains contained in one or more layers of the photosensitive emulsion layer is obtained by The ratio of the equivalent circle diameter of the particles to the thickness of the flat particles is above 5.0; where R 1 Represents a substituent, n represents an integer of 0-6, R 2 Represents an alkyl or aryl group; R 3 are m independent substituents (all R 3 The sum of the Hammett substituent constant σρ values ​​is above 0.1); m represents an integer of 1-3; R 4 and R 5 represents H, alkyl, alkenyl, alkynyl or aryl. INH represents a residue of a mercaptotetrazole, mercaptotriazole or mercaptothiadiazole derivative or the like.

Description

technical field [0001] This invention relates to silver halide color photographic photosensitive materials. In more detail, it is a photographic photosensitive material with high sensitivity, excellent granularity, excellent clarity, and good color reproducibility. Background technique [0002] In silver halide color photographic photosensitive materials, in order to improve the benefits of color negative films for users, higher sensitivity is increasingly required. The penetration of small cameras with image electronic magnification, especially high-sensitivity films with a photographic sensitivity (ISO sensitivity) above 800, has indeed been used frequently. [0003] On the one hand, as the performance of silver halide photographic photosensitive material, next to sensitivity, the most important thing is clarity and color reproducibility. As a means of improving clarity and color reproducibility, it is known that there is The oxidant undergoes a coupling reaction, releas...

AI Technical Summary

Problems solved by technology

However, with this technology, it is difficult for the DIR compounding agent to achieve the edge effect and double-layer effect. The performance of the DIR compounding agent recorded in the above-mentioned patent is not sufficient for high-sensitivity photosensitive materials. Therefore, using the previous technology, for high Sensitive photosensitive materials are difficult to achieve sufficient sharpness, and color reproducibility

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