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...

Examples

Embodiment 1

[0347] 1) Preparation of emulsion

[0348] (emulsion type)

[0349]For the emulsion 1C described in the embodiment 1 of JP-A-11-174606 A, the addition amount of the silver iodide particles in the growth process is adjusted so that the silver iodide content rate reaches 10 mol% to the total silver amount in the particles after the growth process finishes, Thus, silver halide flat grains were prepared. After washing with water, gelatin was added to adjust the pH to 5.7 and pAg to 8.8. The silver conversion mass per 1 kg of the emulsion was 131.8 g and the gelatin mass was 64.1 g, forming an emulsion species. The obtained emulsion was composed of particles having an average silver iodide content of 10 mol %, an average spherical equivalent diameter of 0.7 μm, and an average particle equivalent circle diameter-to-thickness ratio of 28.

[0350] (Em-A1)

[0351] 46 g of trimelliticated gelatin with a trimellitication rate of 97%, and 1211 ml of an aqueous solution containing 1.7...

Embodiment 2

[0746] Samples 101 to 114 prepared in Example 1 were cut and processed, and packed in a packaging unit with a photographic function of a single-use camera "Super Slim Eyes" manufactured by Fujifilm, to obtain a photosensitive material-containing package. photographic products.

[0747] This photographic article was evaluated in the same manner as in Example 1, and the same results were obtained.

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...

Examples

Embodiment 1

[0347] 1) Preparation of emulsion

[0348] (emulsion type)

[0349]For the emulsion 1C described in the embodiment 1 of JP-A-11-174606 A, the addition amount of the silver iodide particles in the growth process is adjusted so that the silver iodide content rate reaches 10 mol% to the total silver amount in the particles after the growth process finishes, Thus, silver halide flat grains were prepared. After washing with water, gelatin was added to adjust the pH to 5.7 and pAg to 8.8. The silver conversion mass per 1 kg of the emulsion was 131.8 g and the gelatin mass was 64.1 g, forming an emulsion species. The obtained emulsion was composed of particles having an average silver iodide content of 10 mol %, an average spherical equivalent diameter of 0.7 μm, and an average particle equivalent circle diameter-to-thickness ratio of 28.

[0350] (Em-A1)

[0351] 46 g of trimelliticated gelatin with a trimellitication rate of 97%, and 1211 ml of an aqueous solution containing 1.7...

Embodiment 2

[0746] Samples 101 to 114 prepared in Example 1 were cut and processed, and packed in a packaging unit with a photographic function of a single-use camera "Super Slim Eyes" manufactured by Fujifilm, to obtain a photosensitive material-containing package. photographic products.

[0747] This photographic article was evaluated in the same manner as in Example 1, and the same results were obtained.

Images