Silver halide colour photographic light-sensitive material

A technology of photosensitive material and color photography, applied in the direction of photosensitive material, application of photosensitive material, subtractive silver halide emulsion process, etc., can solve the problems of insufficient photographic sensitivity, dissatisfaction, and insufficient image quality effect.

Inactive Publication Date: 2005-10-12
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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  • Silver halide colour photographic light-sensitive material
  • Silver halide colour photographic light-sensitive material
  • Silver halide colour photographic light-sensitive material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0242] (Preparation method of emulsion Em-1)

[0243] 1500 ml of an aqueous solution containing 19.5 g of KBr, 15.0 g of Kl, 18.0 g of ammonium nitrate and 30.0 g of gelatin was vigorously stirred at 76°C. The aqueous solution containing 60.0 grams of silver nitrate and the aqueous solution containing 23.0 grams of KBr were added at a constant rate within 8 minutes.

[0244] Next, 28 grams of ammonia were added, and the resulting solution was kept for 10 minutes. After adjusting the pH to 6 by acetic acid, add 1.5×10 -5 Moles of thiourea dioxide and 1×10 -5 Mole of the oxidizing agent (F-14) shown below. In addition, an aqueous solution containing 120.0 grams of silver nitrate and an aqueous solution containing 82.5 grams of silver nitrate were added at a constant rate for 30 minutes by a double injection method.

[0245] After the usual washing, gelatin was added, and the pH and pAg were adjusted to 5.8 and 8.8 at 40°C, respectively.

[0246] This emulsion is composed of flat pla...

Embodiment 2

[0626] The cellulose triacetate membrane support used in sample 001 value 006 prepared in Example 1 was changed to the following support. When these samples were evaluated by the same method as in Example 1, results similar to those in Example 1 were obtained.

[0627] The support used in this example was prepared by the following method.

[0628] 1) The first layer and base coat

[0629] Glow discharge is performed on the two surfaces of a 90 micron thick polyethylene naphthalate (PEN) support. The processing environment pressure is 26.6 Pa, the water pressure in the ambient 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 coating solution of 5 ml / m 2 having the following composition as the first layer by using a wire-wound bar coating method as described in JP-B-4589.

[0630] Conductive fine particle dispersion (SnO 2 / Sb 2 O 5 A water dispersion with a particle ...

Embodiment 3

[0741] It was prepared by coating the sample 001 to 006 cellulose triacetate film support prepared in Example 1 with the following inner liner layer.

[0742] That is, one surface of the support is coated with an inner liner layer having the following composition.

[0743] Methyl methacrylate-methacrylic acid copolymer

[0744] 1.5 parts by mass

[0745] (Copolymerization molar ratio 1:1)

[0746] Cellulose acetate hexahydrophthalate

[0747] (4% hydroxypropyl, 15% methyl, 8% acetyl, 1.5 parts by mass

[0748] And 36% phthaloyl)

[0749] Acetone 50 parts by mass

[0750] 25 parts by mass of methanol

[0751] 25 parts by mass of methyl cellosolve

[0752] Colloidal carbon 1.2 parts by mass

[0753] A plurality of photosensitive layers were coated on the opposite side of the side surface of the support with the backing layer in accordance with the same steps as the sample 001-006, except that the first and second anti-halation layers were not for...

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Abstract

A silver halide color photographic light-sensitive material comprising, on a support, a unit blue-sensitive silver halide emulsion layer, unit green-sensitive silver halide emulsion layer, and unit red-sensitive silver halide emulsion layer, each of which includes not less than two color-sensitive layers differing in sensitivity, wherein tabular grains having an aspect ratio of not less than 5.0 account for not less than 60% of the total projected area of silver halide grains contained in an emulsion layer having the highest sensitivity in each unit color-sensitive layer, and a grain number indicated by specific equation is not more than 1.00.

Description

Invention field [0001] The present invention relates to a silver halide color photographic photosensitive material, and more specifically, to a silver halide color photographic photosensitive material that not only has high sensitivity but also has high image quality, that is, it has high graininess and high definition, and It is also excellent in storage stability. Background technique [0002] Recently, "UTSURUNDESU 800", a snap film with high sensitivity and high image quality, was put on the market. As a result, the habitual use of silver halide color photographic photosensitive materials in high-sensitivity areas is indeed expanding. [0003] Therefore, the photographic area can be expanded by increasing the sensitivity of the film through the photosensitive material. For example, in a dark room, the flash is not used to take pictures, and a telephoto lens is used to take pictures with a high-speed shutter, such as sports photography, and photography that requires a long exp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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