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Silver halide colour photographic light-sensitive material

A technology of photosensitive materials and color photography, applied in the directions of photosensitive materials, application of photosensitive materials, subtractive silver halide emulsion process, etc. The effect is not enough, etc.

Inactive Publication Date: 2002-03-20
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That said, the final image quality level of graininess and sharpness is unsatisfactory in the area of ​​relative photographic sensitivity above 800
Also, the effect of improving image quality after storage is not sufficient
[0013] On the other hand, when the image quality level or the image quality level after storage is satisfactory all the time, the contrast photographic sensitivity becomes insufficient
Correspondingly, it is impossible to take satisfactory photos in a room where the use of electronic astigmatism lights is prohibited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0227] Embodiment 1 (preparation method of emulsion Em-1)

[0228] A 1500 ml aqueous solution containing 19.5 g KBr, 15.0 g KI, 18.0 g ammonium nitrate and 30.0 g gelatin was vigorously stirred at 76°C. An aqueous solution containing 60.0 grams of silver nitrate and an aqueous solution containing 23.0 grams of KBr were added at a constant rate over 8 minutes.

[0229] Next, 28 grams of ammonia were added and the resulting solution was held for 10 minutes. After adjusting the pH to 6 with acetic acid, add 1.5×10 -5 moles of thiourea dioxide and 1 x 10 -5 moles of the oxidizing agent (F-14) shown below. In addition, an aqueous solution containing 120.0 g of silver nitrate and an aqueous solution containing 82.5 g were added at a constant rate over 30 minutes by the double injection method.

[0230] After the usual washing, gelatin was added, and the pH and pAg were adjusted to 5.8 and 8.8, respectively, at 40°C.

[0231] This emulsion consisted of tabular particles with an ...

Embodiment 2

[0301] The cellulose triacetate film support prepared in Example 1 and used in Sample 001 Value 006 was changed to the following support. When these samples were evaluated by the same method as in Example 1, results similar to Example 1 were obtained.

[0302] The support used in this example was prepared by the following method. 1) First coat and base coat

[0303] Glow discharge is carried out on both surfaces of a 90 micron thick polyethylene naphthalate (PEN) support, the treatment environment pressure is 26.6 Pa, the water pressure in the environment gas is 75%, and the discharge frequency is 30 kHz , the output power is 2500 watts, and the processing intensity is 0.5KV.A.Min / m 2 . This support was coated with a 5 ml / m2 coating solution having the following composition as a first layer by using a wire bar coating method as described in JP-B-4589. Conductive fine particle dispersion (SnO 2 / Sb 2 o 5 Aqueous dispersion with a particle concentration of 10%,

[0304] ...

Embodiment 3

[0339] Prepared by coating Samples 001 to 006 cellulose triacetate film supports prepared in Example 1 with the following inner liners.

[0340] That is, one surface of the support was coated with the underlayer having the following composition. Methyl methacrylate-methacrylic acid copolymer

[0341] 1.5 parts by mass (copolymerization molar ratio 1:1) cellulose acetate hexahydrophthalate (4% hydroxypropyl, 15% methyl, 8% acetyl, 1.5 parts by mass and 36% phthaloyl ) 50 parts by mass of acetone 25 parts by mass of methyl cellosolve 25 parts by mass of colloidal carbon 1.2 parts by mass

[0342] A plurality of photosensitive layers were coated on the side opposite to the side of the lined support in the same procedure as Samples 001-006, except that the first and second antihalation layers were not formed, thereby obtaining a color negative sex film.

[0343] Evaluation was carried out in the same manner as in Example 1 except that the develo...

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Abstract

A silver halide photosensitive material for color photography, comprising, on a support, a blue-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a red-sensitive silver halide emulsion layer, each of which Both include not less than two color-sensitive layers with different sensitivities, wherein not less than 60% of tabular particles with an aspect ratio of not less than 5.0 are contained in the emulsion layer with the highest sensitivity in each color-sensitive layer The total projected area of ​​silver halide grains, and the number of grains expressed by a specific equation does not exceed 1.00.

Description

field of invention [0001] The present invention relates to a silver halide color photographic photosensitive material, and more particularly, to a silver halide color photographic photosensitive material having not only high sensitivity but also high image quality, that is, high graininess and high definition, and It is also excellent in storage stability. Background technique [0002] The customary use of silver halide color photographic photosensitive materials in the high-sensitivity area is indeed expanding due to the recent launch of the rush film "UTSURUNDESU 800" with high sensitivity and high image quality. [0003] Thus, increasing the sensitivity of the film through the photosensitive material can expand the photographic area. Examples include photography in a dark room without a flash, photography with a high-speed shutter using a telephoto lens such as sports photography, and photography requiring a long exposure time such as astrophotography. This brings great...

Claims

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Application Information

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IPC IPC(8): G03C7/26G03C1/035G03C1/74G03C7/20G03C7/30
CPCG03C7/3029G03C7/3022G03C2001/0055G03C2001/0056G03C2007/3025G03C2007/3034
Inventor 西村亮治野泽靖
Owner FUJIFILM CORP
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