JPH0427942A - Silver halide color negative photographic sensitive material and color image forming method - Google Patents

Abstract

PURPOSE:To suppress the fluctuation in printing conditions specific to a high- sensitivity photosensitive material and to improve the yield of printing by diminishing the PMS graininess of unexposed parts to the value smaller than a certain value, i.e. to the extent that the grain state of the unexposed part is unnoticed in visual sensation in the stage of negative observation. CONSTITUTION:The PMS graininess of the unexposed parts after the silver halide color negative photographic sensitive material having >=320 specific photographic sensitivity is so adjusted as to attain <=15 with blue light, <=13 with green light and <=14 with red light. The grain state is recognized in visual sensation at the time of negative decision when the graininess attains the value larger than the above-mentioned range. The correction of the conditions at the time of printing is then influenced and such is the cause for degradation of the yield. The advantages of the high-sensitivity photosensitive material in general photography are obtd. by this processing. Namely, the probability to generate the failures by compact cameras of a popular type, i.e. photographs of out-of-focus and under exposures is lowered and the good photographs are provided to general users in general photography.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a high-sensitivity color negative photographic material that has excellent graininess and a high print yield in the laboratory.

[Prior art]

In recent years, due to advances in the technology of photosensitive materials for photography, highly sensitive photosensitive materials have been released one after another. High-quality light-sensitive materials, such as shooting without a strobe in a dark room, shooting with a high-speed shutter using a telephoto lens for sports photography, and shooting of extremely low-luminance subjects such as astrophotography, etc. Efforts are being made to expand the imaging area by increasing the sensitivity.

In addition, autofocus compact cameras equipped with dual focal point or zoom lenses have become rapidly popular in recent years, but these cameras have dark F-number lenses and compact strobes that emit less light, resulting in underexposure and autofocus. Out of focus can easily occur due to poor focus adjustment, but due to the use of high-sensitivity photosensitive materials, there is no lack of exposure even with a zoom lens with a dark F number or a small built-in strobe, and the depth of field is improved because the lens is stopped down and the image is taken. As the focus becomes deeper, the probability of out-of-focus is reduced, and high-sensitivity photosensitive materials are becoming more popular not only for special purposes, but also for general photography, as they allow you to take photos without failure.

However, in order to popularize high-sensitivity photosensitive materials for general photography, there are several problems. One is that when the sensitivity becomes high, image quality, especially graininess, deteriorates.

This is because the grain size of the silver halide microcrystals used increases as sensitivity increases.Recently, with advances in sensitization technology, even highly sensitive materials are now composed of relatively small grain sizes. However, in order to spread the grain size of the silver halide microcrystals used, it is necessary to develop further sensitization technology.
The second reason is that high-sensitivity materials require a larger amount of coated silver per unit area than lower-sensitivity materials, and production costs are higher. can be mentioned. Third, print printing has a poor yield. There are several possible reasons for this, such as the high optical density of unexposed areas making it difficult to see the negative image, and the low processing volume making it difficult to master compared to the 15O-100 photosensitive material, which is widely available, but it is not certain. .

[Problems to be Solved by the Present Invention and Objectives of the Invention] The purpose of the present invention is to eliminate the above-mentioned factors that hinder the spread of high-sensitivity photosensitive materials, thereby improving the advantages of high-sensitivity photosensitive materials in general photography, that is, the popularization type. Reduces the probability of failures caused by compact cameras, such as out-of-focus and underexposed photos,
- To easily provide good photos to general users when taking photos.

Therefore, the purpose of the present invention is to reduce the amount of coated silver, improve the graininess, and improve the print yield during printing in high-speed photosensitive materials with a specific photographic speed of 320 or higher. -100 color negative photosensitive material and have the same popular characteristics.

In particular, the print yield during printing must be resolved in order to popularize high-sensitivity photosensitive materials, considering the current situation where it is becoming difficult to widely expect advanced printing technology due to the recent spread of minilabs. This is an important issue. The reason why the print yield of high-sensitivity photosensitive materials is not such a big problem at present is because the field of use is limited and there is a quota for special uses, and because the quantity is small, the absolute number of defective prints is smaller than that of commonly used photosensitive materials. However, if high-sensitivity photosensitive materials are widely used and become widespread, the problem of print yield becomes a fundamental problem in laboratory management and becomes important.

[Means for solving problems]

The object of the present invention is to have one or more red-sensitive silver halide emulsion layers, one or more green-sensitive silver halide emulsion layers, and one or more blue-sensitive silver halide emulsion layers on a support, and have a specific photographic sensitivity of 320 or more. In a silver color negative photographic light-sensitive material, a halogen characterized in that the RMS granularity of the unexposed area after developing the light-sensitive material is 15 or less for blue light, 13 or less for green light, and 14 or less for red light. This can be achieved using silver oxide color negative photographic materials.

In other words, in order to solve the problem of print yield deterioration of high-sensitivity photosensitive materials, the inventors of the present invention have conducted extensive research and have found a previously known factor that affects print yield, namely the unexposed area. It was found that even if the density and the shape of the characteristic curve of the sensitive material were the same, there were factors unique to high-speed sensitive materials. That is, it has been found that the granularity of the unexposed portion of the photosensitive material after development affects the printing conditions.

It has been known for a long time that the optical characteristics of the unexposed portions of color negative photosensitive materials after development affect printing conditions. That is, the optical density of the unexposed portion affects the amount of exposure to color paper. In addition, the optical density and the density balance (tone) of each color-sensitive layer affect so-called negative viewing determination, in which a printer operator observes a negative image and determines printing conditions. However, if the density of the unexposed area and the density balance are constant, the influence on the printing conditions should be constant.
It was found that the printing conditions for high-sensitivity photosensitive materials differ even if they are the same as those for photosensitive materials.

As a result of intensive research, the inventors of the present invention found that this is caused by the granularity of the unexposed area, and set the RMS granularity of the unexposed area to a value smaller than a certain value. By making the size small enough to be visually unnoticeable, variations in printing conditions peculiar to this high-sensitivity photosensitive material can be suppressed. Although the physical or psychophysical explanation for this phenomenon has not yet been fully explained, the inventors of the present invention conjecture that the grain quality in the unexposed areas is reduced due to the deterioration of the grain quality that accompanies the higher sensitivity of the photosensitive material. When viewing the negative, this gives the operator the illusion that the optical density balance of unexposed areas appears to be shifted due to graininess, which may affect the correction of printing conditions.

Reducing the RMS granularity of unexposed areas can be achieved in the following manner. That is, one method is achieved by increasing the uniformity of the dye cloud produced by the development process. This can be adjusted by adjusting the reactivity of the photographic coupler and its ratio to the silver halide emulsion. Also,
Adjustment can also be made by blurring the graininess of an oil-protected coupler by giving the coupler fine mobility. Furthermore, by making the microcrystalline grains in the silver halide agent uniform, the RMS granularity of the generated dye cloud can be reduced. Improvement in the uniformity of microcrystalline grains can be achieved by modifying the manufacturing conditions of the silver halide emulsion. For example, as shown in Japanese Patent Application No. 63-224002, there is a method of supplying iodide ions using silver iodide fine grains,
A method of growing silver iodobromide fine grains on seed grains by Ostwald ripening as shown in No. 3417 is useful.

The specific photographic sensitivity of a light-sensitive material as used in the present invention is determined according to the test method shown below. JIS K7614-1
981) (1) Test conditions The test is conducted indoors at a temperature of 20±5° C. and a relative humidity of 60±10%, and the photosensitive material to be tested is left in this state for at least one hour before use.

(2) Exposure ■ The relative spectral energy distribution of the reference light on the exposure surface is as shown in Table 1.

(Vt) Table 1 (Continued) (1) This is a value determined by standardizing the value of 560rv to 100.

■ Illuminance changes on the exposed surface are performed using an optical wedge, and the optical wedge used has a variation in spectral transmission density in the wavelength range of 360 to 700 nm, within 10% in the region less than 400 nm, and 5% in the region over 400 nm. Use the following.

■ Exposure time is 1/100 second.

(3) Development Process ■ From exposure to development process, the photosensitive material to be tested is maintained at a temperature of 20±5°C and a relative temperature of 60±10%.

■Development processing should be completed within 30 minutes or more and within 6 hours after exposure.

■ Development processing shall be performed as follows.

1. Color development---3 minutes 15 seconds 38
．． 0±061°C2, bleaching...
−・−・6 minutes 30 seconds 38.0±3.0℃3, water washing・−
−−−−−−−−−−−−−−−3 minutes 15 seconds 24~
41°C 4, fixing-------------
--6 minutes 30 seconds 38.0±3.0℃5, water washing ---
1111--3 minutes 15 seconds 24-41℃6,
Stable---------・----3 minutes 15
Seconds 38.0±3.0℃7, Drying---11------
----------・-・Below 50°C The composition of the treatment liquid used in each step is shown below.

(Color developer) 4-Amino-3-methyl-N-ethyl-N-(β-hydroxyethyl)aniline sulfate 4.75 g Anhydrous sodium sulfite 4.25 g Hydroxyamine 1/2 sulfate 2. 0 g Anhydrous potassium carbonate 37.5 g Sodium bromide 1.3 g Nitrilotriacetic acid trisodium salt (monohydrate) 2.5 g Potassium hydroxide 1.0 g Add water to make 1) (pH = 10.1) (Bleach solution) Ethylenediaminetetraacetic acid iron (III) ammonium salt 100.0 g Ethylenediaminetetraacetic acid diammonium salt 10.0 g Ammonium bromide 150.0 g Glacial acetic acid
Add 10.0 g water and 1
) and adjust the pH to 6.0 using aqueous ammonia.

(Fixer) Ammonium thiosulfate 175.0 g Anhydrous sodium sulfite 8.5 g Allitium metasulfite 2.3 g Add water to 1
) and adjusted to pH 6.0 using acetic acid.

(Stable liquid) Formalin (37% aqueous solution) 1.5mj!
Conidax (manufactured by Konica Corporation) 7.5 mff of water was added to prepare 1).

(4) Concentration measurement The concentration is NOg+. It is expressed as (Φ./Φ). φ. is the illumination light flux for density measurement, and Φ is the transmitted light flux of the part to be measured.

The geometric conditions for concentration measurement are based on the fact that the illumination light flux is parallel light flux in the normal direction, and that the total light flux that is transmitted as a transmitted light flux and diffused in a half space is used.When using other measurement methods, standard *? Perform correction using a degree piece. Further, during measurement, the emulsion film surface shall face the light receiving device side. Concentration measurement is performed using blue, green, and red status MtM degrees, and the spectral characteristics are set to values shown in Table 2 as the comprehensive characteristics of the light source, optical system, and optical filter light receiving device used in the densitometer.

Table Status M Concentration Spectral Characteristics ** Red slope 0.260/nm, green slope 0
, 106/nm, blue slope 0.250/nm, red slope 0.040/ru++, green slope 0.1
20/nm, blue slope 0.220/n1l15)
Determination of Specific Photographic Sensitivity Using the results of processing and density measurement under the conditions shown in 1) to 4), the specific photographic sensitivity is determined by the following procedure.

■ 0.15 for each minimum density of blue, green, and red.
The exposure amount corresponding to high density is expressed in lux/second and is called HB, HG, and HR, respectively.

■ The larger value of HB and HR (lower sensitivity)
Let be HS.

■ Calculate the specific photographic sensitivity S according to the formula below.

Another way to reduce the RMS granularity of unexposed areas is to reduce fog in the silver halide emulsion. Many methods are conventionally known for reducing fog in silver halide emulsions. For example, a known fog suppressant can be used as an additive. The purpose of the present invention is to reduce fog by forming silver halide at a pH of 7.5 or lower in the production of silver halide emulsions using an ammoniacal silver nitrate aqueous solution. A low silver halide emulsion can be obtained.

The RMS granularity referred to in the present invention is measured by the following method.

The RMS value is determined by subjecting an unexposed photosensitive material to the development process described in the above-mentioned specific method for measuring photographic sensitivity, and measuring the processed sample using a microdensitometer.

The RMS value is the concentration of the measured part of the sample with an aperture scanning area of 180
0μml (slit width 10μm, slit length 180μm
Scanning was performed using a microdensitometer (m), and the value is expressed as 1000 times the standard deviation of the variation in concentration value obtained by sampling over 1000 samples.

R of each of the blue color-sensitive layer, the green color-sensitive layer, and the red color-sensing layer
MS granularity was measured using Usoten filters W-47°W-99 and W-26 manufactured by Eastman Kodasoku respectively.
Measure using.

The photosensitive material of the present invention has a specific photographic sensitivity of 320 or more determined by the above method. If the sensitivity is less than 320, it is not only virtually impossible to take pictures in a dark room without using a strobe, to take pictures with a high-speed shutter using a telephoto lens for sports photography, or to take astrophotography, which is the purpose of the present invention. It becomes impossible to reduce the probability of out-of-focus or underexposure failures in general photography using a compact autofocus camera.

The photosensitive material of the present invention preferably has a specific photographic sensitivity of 350 or more.

The RMS granularity of the unexposed area after development of the photosensitive material of the present invention is determined to be 15 or less for blue light and 1 for green light, as determined by the above-mentioned measurement method.
3 or less and 14 or less for red light. If the value is larger than this, graininess will be visually recognized during negative judgment, which will affect correction of conditions during printing and cause a decrease in yield.

More preferably, it is 13 or less for blue light, 1) or less for green light, and 13 or less for red light.

The RMS granularity of the present invention is defined by the measurement method described above, which is based on the currently widely used development processing method for color negatives. Currently, the color negative film is developed using Eastman Kodasoku C-41.
Products that comply with this processing are widely used around the world, and photosensitive materials from other photosensitive material manufacturers can be commonly developed, making them extremely convenient for users.

For these reasons, the popular processing method will continue to be
Although there seems to be no major change, the same effect can be obtained even if a process different from the currently popular development process is performed so that the RMS granularity of the unexposed area is below the value shown in the present invention. Needless to say.

That is, the object of the present invention is to provide a support having one or more red-sensitive silver halide emulsion layers, one or more green-sensitive silver halide emulsion layers, and one or more red-sensitive silver halide emulsion layers on a support, and having a specific photographic sensitivity of 320 or more. The RMS graininess of the unexposed area after developing a silver halide color negative photographic light-sensitive material is 1 in blue light.
5 or less, 13 or less for green light, and 14 or less for red light. The RMS granularity in this case is a value measured on a sample obtained by the development process used for final image formation.

It is preferable that the amount of coated silver in the light-sensitive material of the present invention is smaller than that in conventional high-speed light-sensitive materials. Specifically 10.0g/rI
(Hereinafter, it is more preferably 9.0 g/m or less, more preferably 4.5 to 8.0 g/m. In order to reduce the probability of defective prints by widely using high-sensitivity photosensitive materials in general photography. It is preferable that the amount of coated silver be small, since not only does it reduce costs, but also there is less increase in fog caused by heat and natural radiation during storage of the photosensitive material and less deterioration of graininess in fogged areas, that is, unexposed areas.

The light-sensitive material of the present invention each has one or more red-sensitive silver halide emulsion layers, one or more green-sensitive silver halide emulsion layers, and one or more blue-sensitive silver halide emulsion layers. It is preferable that the emulsion layer is composed of different emulsion layers of 2N or more, and it is more preferable that a three-layer structure is used to further improve the graininess. These techniques are described in British Patent No. 923.045 and Japanese Patent Publication No. 49-15495, respectively.

As described above, the object of the present invention can be achieved by designing a silver halide color negative photographic light-sensitive material with a specific photographic sensitivity of 320 or higher in accordance with the new guidelines regarding the total silver amount and film thickness. It is even more preferable to combine it with technology.

Specific examples of preferred high-sensitivity techniques that can be combined with the present invention are listed below, but are not limited thereto.

(1) Yellow filter dye.

(2) Sensitizing dyes, especially supersensitizing dyes as described below, (3
) Silver halide grains with a core-shell type two-layer structure in which the silver iodide concentration in the core is higher than that in the shell part, (4) Multi-structure grains in which the concentration of silver iodide in each layer within the grain is precisely controlled, (5 ) Tabular silver halide grains having an aspect ratio of 1.5 or more.

(6) Monodisperse silver halide grains, (7) 2-equivalent coupler (8) Fast-reacting coupler (9) Inversion layer structure, unit layer structure, θω The average silver iodide content of all emulsion layers is 8 mol% or more technology.

Various inventions regarding the order of layer arrangement have been made in order to achieve both high sensitivity and high image quality, and it is preferable to combine these techniques (see (9)). Inventions regarding the order of layer arrangement are disclosed in, for example, U.S. Pat.
, 129,446, 4,186.016, British Patent No. 1,560,955, U.S. Patent No. 4,186,0
1) No. 4,267.264, No. 4,173.47
No. 9, No. 4,157,917, No. 4,165,236
No., British Patent No. 2.138,962, Japanese Patent Application No. 1987-1
No. 77552, British Patent No. 2,137,372, Japanese Patent Application Laid-open No. 59-180556, Japanese Patent Application Publication No. 59-204038, etc.

A non-light sensitive layer may also be present between two or more emulsion layers having the same color sensitivity.

A reflective layer such as fine-grain silver halide may be provided under the high-speed layer, particularly the high-speed blue-sensitive layer, to improve sensitivity. This technique is described, for example, in Japanese Patent Laid-Open No. 160135/1983.

Generally, the red-sensitive emulsion layer contains a cyan-forming coupler, the green-sensitive emulsion layer contains a magenta-forming coupler, and the blue-sensitive emulsion layer contains a yellow-forming coupler, but different combinations may be used depending on the case. For example, it may be used in combination with an infrared-sensitive layer for pseudo-color photography or semiconductor laser exposure.

Also, U.S. Patent No. 3.497.350 or JP
It is also possible to use a method such as that described in No. 9214853, in which the color sensitivity of the emulsion layer and a color image-forming coupler are appropriately combined and this layer is provided at the farthest position from the support.

Any of silver bromide, silver iodobromide, silver iodochlorobromide, silver chlorobromide and silver chloride may be used as silver halide in the photographic emulsion layer of the silver halide photographic light-sensitive material of the present invention. A preferred silver halide is silver iodobromide containing up to 30 mole percent silver iodide. Particularly preferred is silver iodobromide containing from 2 mol % to 20 mol % silver iodide. In addition, in order to achieve both high sensitivity and high image quality, the average silver iodide content of silver halide in all emulsion layers should be 8 mol% or more, as described in JP-A-60-128443. is preferable.

It is known that reducing the average silver iodide content of silver halide significantly improves graininess, but if the silver iodide content exceeds a certain level, development speed may be delayed, desilvering, and fixing speed may be reduced. There are drawbacks such as delays.

However, in the present invention, since the contained silver content is small and the film thickness is thin, these drawbacks are unlikely to become a problem even if the silver iodide content is increased, which is very preferable.

The silver halide grains used in the photographic emulsion layer of the silver halide photographic light-sensitive material of the present invention include a core consisting essentially of silver iodobromide containing 5 mol% or more of silver iodide, and a core consisting essentially of silver iodobromide containing 5 mol% or more of silver iodide; It is preferred to have a double structure constituted by a shell consisting essentially of silver iodobromide or silver bromide, the silver iodide content of which is lower than the silver iodide content of the core. The silver iodide content of the core is more preferably 10 mol% or more, and most preferably 20 mol% or more and 44 mol% or less.

The silver iodide content of the shell is preferably 5 mol% or less.

The core may contain silver iodide uniformly, or may have a multilayer structure consisting of phases having different silver iodide contents. In the latter case, the silver iodide content of the phase with the highest silver iodide content is 5 mol% or more, more preferably 10
% by mole or more, and the silver iodide content of the shell is lower than that of the highest silver iodide content phase of the core. or,
"Substantially consisting of silver iodobromide" means that it mainly consists of silver iodobromide, but may also contain up to about 1 mol % of other components.

In a further preferred embodiment of the silver halide grains used in the photographic emulsion layer of the silver halide photographic light-sensitive material of the present invention, the silver halide grains have a diffraction angle (2θ) in the range of 38 to 42°, and the silver halide grains are When we obtain the diffraction intensity vs. diffraction angle curve for the (220) plane, we find that there are two diffraction maxima, a diffraction peak corresponding to the core part and a peak corresponding to the shell part, and one minimum between them. In addition, the particles have a structure such that the diffraction intensity corresponding to the core portion is 1/10 to 3/1 of that of the shell portion. Particularly preferably, the diffraction intensity ratio is 1) 5 to 3/1, more preferably 1/3 to 3/1.

Such a double structure makes it possible to use a high-iodine silver iodobromide emulsion without causing a delay in development speed, and it is possible to achieve a photosensitive material with excellent graininess even with a small amount of coated silver. I can do it.

Another preferred embodiment of the silver halide grains used in the photographic emulsion layer of the silver halide photographic light-sensitive material of the present invention is that the silver iodide content forming the core portion inside the grain is 10 to 40 mol%. This silver iodobromide phase is coated with silver halide containing lower silver iodide, which forms a shell part, and furthermore, the surface of the grain contains 5 mol% or more of silver iodide. This is a case where it is included. The silver iodide in the shell portion may be uniform or non-uniform. XP means that the surface contains 5 mol% or more of silver iodide.
This means that the average content of silver iodide on the grain surface measured by the S method is 5 mol% or more. Preferably, the average content of silver iodide on the surface is 7 mol % or more and 15 mol % or less. Regarding this silver halide grain, Japanese Patent Application No. 61-253
It is described in detail in No. 370. These silver halide grains are preferred because they have good granularity.

Furthermore, another preferred embodiment of the silver halide grains used in the photographic emulsion layer of the silver halide photographic light-sensitive material of the present invention includes an inner core consisting essentially of silver bromide and/or silver iodide; Silver halide grains having a plurality of outer shells provided on the outside and consisting essentially of silver bromide and/or silver iodobromide, the outermost shell having a silver iodide content of 10 mol%
and a high silver iodide content shell having a silver iodide content higher than that of the outermost shell by 6 mol% or more is provided inside the outermost shell, and the silver iodide content is higher than that of the outermost shell, and An intermediate shell having a silver iodide content intermediate between these two shells is provided between the containing shell, and the silver iodide content of the intermediate shell is 3 mol% or more higher than that of the outermost shell, and This is a case where the silver iodide content of the high silver iodide content shell is higher than that of the intermediate shell by 3 mol% or more. Regarding this silver halide grain, Japanese Patent Application Laid-Open No. 61-24515
It is detailed in issue 1. These silver halide grains are also preferred because they have good granularity.

Furthermore, other preferred embodiments of the silver halide grains used in the photographic emulsion layer of the silver halide photographic light-sensitive material of the present invention include monodisperse grains as defined below. That is, as defined by the following equation, the standard deviation S of the particle size is expressed as the average particle size r
A case where the value obtained by multiplying the value divided by 100 (hereinafter referred to as the coefficient of variation) is 16 or less is referred to as monodispersity.

×　100≦16% Note that S is a general standard deviation used in statistics.

As mentioned above, these monodisperse silver halide grains are
It may have a layered or multiple structure.

The shape of the monodisperse silver halide grains may be cubic, octahedral, or tetradecahedral, or may be spherical or plate-like.

Monodisperse silver halide grains are preferred because they have good granularity and, if they are in a size range with little light scattering, they also provide excellent image sharpness. Monodisperse silver halide grains are
JP-A-54-48521, JP-A No. 5499419, JP-A No. 5
No. 6-16124, No. 55-78831, U.S. Patent No. 4,444,877, JP-A-57-182730,
No. 58-49938, No. 58-37635, U.S. Patent No. 4.446.228, JP-A-58-106532
No. 58-107530, No. 58-126531, No. 58-149037, No. 5910947, No. 5
No. 9-29243, No. 59-72440, No. 59-1
No. 40443, No. 59-148049, No. 59-17
It is described in detail in No. 7535, No. 59-1.52438, etc.

Other preferable silver halide grains that can be used in the light-sensitive material of the present invention include tabular grains having an aspect ratio of 5 or more.

The silver halide grains used in the photographic emulsion layer of the silver halide photographic light-sensitive material of the present invention are preferably spectrally sensitized with a sensitizing dye according to a conventional method.

Along with the sensitizing dye, it is a dye that itself does not have a spectral sensitizing effect or a substance that does not substantially absorb visible light,
A substance exhibiting supersensitization may also be included in the emulsion. for example,
Aminostyl compounds substituted with nitrogen-containing heterocyclic groups (for example, U.S. Patent Nos. 2,993,390, 3,635,
No. 721), aromatic organic acid formaldehyde condensates (for example, those described in U.S. Pat. No. 3,743,510), cadmium salts, azaindene compounds, and the like.

U.S. Patent Nos. 3.615,613 and 3.615,64
No. 1, No. 3, 617.295, No. 3,635.721
The combinations described in this issue are particularly useful.

The silver halide emulsion used in the color negative photographic light-sensitive material of the present invention having a specific photographic sensitivity of 320 or higher is spectrally sensitized as described above to increase the sensitivity to visible light of a necessary wavelength. In order to minimize performance deterioration due to natural radiation, it is preferable that the sensitivity of the silver halide emulsion to radiation be as low as possible. According to the research conducted by the present inventors, the radiation sensitivity of a silver halide emulsion shows a good correlation with so-called intrinsic sensitivity, but does not necessarily correlate with so-called color sensitization sensitivity. Therefore, in order to have high sensitivity to light while minimizing performance deterioration due to natural radiation, it is preferable to use an emulsion with high color sensitization sensitivity and low intrinsic sensitivity. Therefore, it is particularly preferable to use the above-mentioned supersensitizer which increases only the color sensitization sensitivity without changing the inherent sensitivity. It is also preferable to add as much sensitizing dye as possible without lowering the color sensitization sensitivity too much, and to lower the intrinsic sensitivity by so-called intrinsic desensitization. In addition, the aspect ratio is 1.0, which has high color sensitization efficiency using sensitizing dyes.
It is also preferred to use tabular grains with a particle size of 5 or more.

Tabular grains are described by Gutoff, Photographic Science and Engineering Link (GutoffPhoto).
graphic 5science and engineering
14, pp. 248-257 (1
970); U.S. Patent No. 4,434.226;
No. 414,310, No. 4,433,048, No. 4,4
39,520 and British Patent No. 2.1) 2.157.

A color coupler is added to the photographic emulsion layer used in the present invention as a dye image-forming substance.

For example, magenta couplers include 5-pyrazolone couplers, pyrazolobenzimidazole couplers, cyanoacetylcoumarone couplers, open-chain acylacetonitrile couplers, and yellow couplers include acylacetamide couplers (e.g., benzoylacetanilides,
Examples of cyan couplers include naphthol couplers and phenol couplers. These couplers are preferably non-diffusible and have a hydrophobic group called a ballast group in their molecules, or are polymerized. The coupler may be either 4-equivalent or 2-equivalent to silver ions, but in order to reduce the silver content in the light-sensitive material, a 2-equivalent coupler with higher silver utilization efficiency is used. It is preferable to use

In particular, when an emulsion layer with the same color sensitivity is composed of two or more emulsion layers with different sensitivities, the most sensitive emulsion layer of each of the red-sensitive layer, green-sensitive layer, and blue-sensitive layer has a 2-equivalent emulsion layer. It is preferable to include a coupler.

Further, as the coupler used in the present invention, a so-called fast reaction coupler having a high campling reaction can be used.

The fast-reacting coupler used in the present invention has an RM/RNO value of 1.5 or more in the case of a 2-cyan coupler and 2.5 in the case of a magenta coupler, as determined using the above-mentioned coupler N.
As mentioned above, in the case of yellow couplers, those having a value exceeding 1 are preferable.

Specific examples of preferred fast reaction couplers used in the present invention are shown below, but the present invention is not limited thereto.

Example of cyan coupler OCIlzCHzSCHzC COzl+ "C5H + (1N H 0O1) H 0CHzCHzSOtCHi Example of magenta coupler Cβ C7! M-6 Example of yellow coupler - N Y-5 In the present invention, such a fast reaction coupler is used in at least each color-sensitive layer It is preferable to add the cyan fast-reacting coupler to the unit emulsion layer with the highest sensitivity.The amount used is not particularly limited, but the cyan fast-reacting coupler is from 0.005 to 0.005 per mole of silver.
0.1 mole, Mazenck fast reaction coupler 0.005-0
．． 1 mole, yellow fast-reacting coupler 0.005-0.
A range of 1 mole is preferred.

In addition, the present invention applies to paragraphs 1 and 3 to 8 of U.S. Pat.
By using a diffusion-resistant coupler whose generated dye has appropriate diffusivity as specified in No. 91036, it is possible to improve sensitivity and improve graininess by improving covering power. These couplers include the above patents and Japanese Patent Application Laid-open Nos. 56-1938, 57-3934, and 5
No. 3-105226, U.S. Pat. No. 4, 264, 72
It can be easily synthesized according to the method described in No. 3.

The present invention may include a coupler that releases a development inhibitor upon development (so-called DIR coupler).

As a DIR coupler, for example, U.S. Patent No. 3.227
, No. 554, etc.; those releasing benzotriazole derivatives as development inhibitors, as described in Japanese Patent Publication No. 58-9942, etc.; Japanese Patent Publication No. 51-16141, etc. The so-called colorless DIR coupler described in JP-A-5290932 releases a nitrogen-containing heterocyclic development inhibitor with decomposition of methylol after separation; the one described in U.S. Pat. No. 4,248,962 The separation theory involves the release of a development inhibitor accompanied by an intramolecular nucleophilic reaction; JP-A-56-1) No. 4946, No. 57-
No. 56837, No. 57-154234, No. 57-18
No. 8035, No. 5B-98728, No. 58-209
No. 736, No. 58-209737, No. 58-2097
38, 58-209740, etc., which release the development inhibitor by electron transfer via a conjugated system; the development inhibitory ability is deactivated in the developer described in JP-A-57-151944, etc. those that release diffusible development inhibitors;
JP-A-60-182438, JP-A-60-18424
Examples include those which release the reactive compound described in No. 8, etc., and generate a development inhibitor during development or deactivate the development inhibitor.

In addition to the above-mentioned couplers, the present invention may also include colored couplers that have a color correction effect. In addition to DIR couplers, the products of the camping reaction are colorless,
It may also contain a colorless I) IR coupling compound that releases a development inhibitor.

In the present invention, high sensitivity can be achieved by using a compound that can form a development accelerator or fogging agent during silver development. These compounds are described in U.S. Patent No. 4,39
No. 0,618, No. 4,518,682, No. 4.526
, No. 863, No. 4,482,629, JP-A-59-1
No. 57638, No. 59-170840, No. 60-18
It can be easily synthesized by the method described in No. 5950, No. 60-107029, etc.

Two or more types of the above couplers etc. can be used in the same layer in order to satisfy the characteristics required of a photosensitive material, or the same compound can be added to two or more different layers.
Of course it doesn't matter.

A coupler can be introduced into a silver halide emulsion layer by a known method, such as the method described in U.S. Pat. No. 2,322,027. For example, phthalic acid alkyl esters (dibutyl phthalate, dioctyl phthalate, etc.)
, phosphate esters (diphenyl phosphate, triphenyl phosphate, tricresyl phosphate,
dioctylbutyl phosphate), citric acid esters (e.g. acetyl tributyl citrate), benzoic acid esters (e.g. octyl benzoate), alkylamides (e.g. diethyl laurylamide), fatty acid esters (e.g. dibutoxyethyl succinate, diethyl azelate) ), trimesic acid esters (e.g. tributyl trimesate), etc., or organic solvents with a boiling point of about 30° C. to 150 t, such as lower alkyl acetates such as ethyl acetate and butyl acetate, ethyl propionate, secondary butyl alcohol, methyl isobutyl ketone, After being dissolved in β-ethoxyethyl acetate, methyl cellosolve acetate, etc., it is dispersed in a hydrophilic colloid. The above-mentioned high boiling point organic solvent and low boiling point organic solvent may be used in combination.

Also, Japanese Patent Publication No. 51-39853, Japanese Patent Publication No. 51-5994
The dispersion method using polymers described in No. 3 can also be used.

When the coupler has an acid group such as carboxylic acid or sulfonic acid, it is introduced into the hydrophilic colloid as an alkaline aqueous solution.

The photographic color formers used are conveniently selected to provide intermediate scale images. The maximum absorption band of the cyan dye formed from the cyan color former is approximately 600 to 720 nm.
The magenta dye formed from the magenta color former has a maximum absorption band between about 500 and 580 nm, and the yellow dye formed from the yellow color former has a maximum absorption band between about 400 and 480 nm. It is preferable that there be.

The photosensitive material of the present invention may contain a dye in the hydrophilic colloid layer as a filter dye or for various purposes such as preventing irradiation. Such dyes include oxonol dyes, hemioxonol dyes, styryl dyes, merocyanine dyes, cyanine dyes and ab dyes.

Among them, oxonol dyes, hemioxonol dyes and merocyanine dyes are useful. Specific examples of dyes that can be used include British Patent Nos. 584, 609, 177.429, JP 48-85130, JP 49-96620, JP 491) 4420, JP 52-1081) 5, and U.S. Pat. No. 2,255,077, No. 2,274.782, No. 2.390.707, No. 2.493,747, No. 2
, No. 533,472, No. 2,843,486, No. 2,
No. 956,879, No. 3.148.187, No. 3.1
No. 77.078, No. 3,247.127, No. 3,54
No. 0.887, No. 3.575,704, No. 3,653
, No. 905, No. 3,718,472, No. 4,071,
No. 312, No. 4,070,352, No. 4,420,5
This is what was written in No. 55.

In the photographic material of the present invention, when the hydrophilic colloid layer contains dyes, ultraviolet absorbers, etc., they may be mordanted with a cationic polymer or the like. For example, British Patent No. 685,475, US Patent No. 2,675
, No. 316, No. 2,839,401, No. 2.882.
No. 156, No. 3,048,487, No. 3.184.3
No. 09, No. 3,445,231, West German patent ratio a (OL
Polymers described in S) No. 1,914,362, JP-A-50-47624, JP-A-50-71332, etc. can be used.

The color negative photographic light-sensitive material of the present invention contains a common yellow film IM. The yellow filter layer uses colloidal silver or the various dyes mentioned above. In particular, in the present invention, the filter effect is excellent and the sensitivity of the green-sensitive emulsion layer is significantly higher than when colloidal silver is used.

Various additives generally used in silver halide photosensitive materials can be used in the photosensitive material of the present invention.

Such materials are described, for example, in U.S. Pat. No. 4,599,30
It is stated in the specification of No. 1. Typical examples include surfactants (column 33), water-insoluble or sparingly soluble polymers (column 33) described in lines 334m12 to 38m45 of the same specification.
-34 columns), ultraviolet absorbers (37-38 columns), color fog preventive agents (37 columns), color fog preventive agents (38 columns), and hydroquinones (38 columns).

The photosensitive material of the present invention can be used, for example, in the above-mentioned U.S. Patent No. 4.599.
, No. 301, columns 34@ and 35 can be used for development. Further, by stabilizing treatment or water washing treatment as described in JP-A-6135446, it is possible to significantly save water after the desilvering step.

〔Example〕

Specific examples of the present invention will be described below, but the embodiments of the present invention are not limited thereto.

In all the examples below, the amount added in the silver halide photographic light-sensitive material is expressed in grams per 1M unless otherwise specified. Furthermore, silver halide and colloidal silver are shown in terms of silver.

Example 1 On a triacetyl cellulose film support, each layer having the composition shown below was sequentially formed from the support side to prepare a multilayer color photographic material sample-101.

Sample-101 (comparison) 1st layer; antihalation layer (HC-1) black colloidal silver 0.18 UV absorber (UV-
1) 0.29 high boiling point solvent (O4ff-
1) 0.23 High boiling point solvent (○1A-2) Colored magenta coupler (CM 0.01) 0.01) 1.57 Gelatin 2nd layer; 1st intermediate layer (IL-1) Gelatin 3rd layer; Low Sensitivity Red-sensitive emulsion layer (RL) Silver iodobromide emulsion (Em-1) 0.80 Silver iodobromide emulsion (Em-2) 1.21 Sensitizing dye (SD-1) 1.3 X 10 (mol/
1 mole of silver) Sensitizing dye (SD-2> 2.2xl O-'
(Mole/1 mole of silver) Sensitizing dye (SD-3) 2.2 X 10
-' (mol/silver 1 mol) Cyan coupler ((, -1) 1.21 Colored cyan coupler (CC-1) 0.032 DIR
Compound (D-1) 0°05 high boiling point solvent (
O4l-1) 1.04 gelatin
2.001.27 4th layer; 2nd intermediate layer (IL-2) Gelatin 0.80 5th layer;
High sensitivity red-sensitive emulsion layer (RH) Silver iodobromide emulsion (Em-3) 0.30 silver iodobromide emulsion (Em-2) 0.54 silver iodobromide emulsion (Em-4) 1.61 sensitization Dye (SD
-1) 7.1X10 (mol/silver 1 mol) Sensitizing dye (SD-2) 1.2 X 10
(Mole/1 mole of silver) Sensitizing dye (SI)-3) 1.2X10 (mol/1 mole of silver) Cyan coupler (C-1) 0.05 Cyan coupler (C-2) 0.19 DIR compound (D- 3) 0.0066 DIR compound (D-3) 0.0076 high boiling point medium ○1A-1) 0.28 gelatin
1.37 6th layer: 2nd intermediate layer (
IL-2) Gelatin 0.80 High boiling point solvent (Oij2-2>0.083C-20
,071 7th layer; Low sensitivity green-sensitive emulsion layer (GL) Silver iodobromide emulsion (Em-1) 0.46 Silver iodobromide emulsion (Em-2) 0.69 Sensitizing dye (SD-4) 2 .7X10 (mol/silver 1
mol) Sensitizing dye (SD-5) 2.5X10 (mol/silver 1 mol) Sensitizing dye (SD-7) 8. OX 10-
5 (mol/silver 1 mol) Sensitizing dye (Sl)-8) 1.9 X 1
0-5 (mol/mol of silver) Sensitizing dye (SD-1)) 1.4X10 (mol/mol of silver) Magenta coupler (M-3) 0.34 Colored magenta coupler (CM-3) 0,048 DIR compound (D-3) 0.0025
DIR compound (D-4) 0.013DI
R compound (D-2) High boiling point solvent (Oiff-4) Gelatin 8th layer; 3rd intermediate layer (IL-3) High boiling point solvent (Oil-1) Gelatin 9th M; High sensitivity green-sensitive emulsion layer (GH) Silver iodobromide emulsion (Em-2) 0.56 Silver iodobromide emulsion (Em-4) 2.26 Sensitizing dye (S
D-1)) 4.5 x 10-' (mol/
1 mole of silver) Sensitizing dye (SD-6) 9.6X10-' (
mol/1 mol of silver) Sensitizing dye (SD-7) 8.8xl O-
'(mol/silver 1 mol) Sensitizing dye (SD-8) 1.4 x 10
-' (mol/mol of silver) Magenta coupler (M-1) 0.14 Magenta coupler (M-3) 0.068 Colored magenta coupler (CM-2) 0.3 0.0 0.1 1.1 0 .83 0.1) DIR compound (D-5) 0.0015 High boiling point solvent (Oi7!-2) 0.57 Gelatin 1.97 10th layer; Yellow filter layer (YC) Yellow colloidal silver
0.05 color stain prevention agent (SC-2)
0.054 High boiling point solvent (Oil-2)
0.063 Gelatin 0.
49 Formalin scavenger (H3-1) 0.08 Formalin scavenger (H3-2) 0.10 1st) layer; low sensitivity blue-sensitive emulsion layer (BL) silver iodobromide emulsion (
Em-1) 0.226 silver iodobromide emulsion (Em
-2) 0.239 sensitizing dye (SD-12)
5.5X10 (mol/silver 1 mol) Sensitizing dye (St)-10) 5.0 X 1
0-' (mol/silver 1 mol) Yellow coupler (Y-1) Yellow coupler (Y-2) DIR compound (D-1) High boiling point solvent (Oif-2) Gelatin formalin scavenger Formalin scavenger - No. 12 Layer: High-speed blue-sensitive emulsion layer Silver iodobromide emulsion (Em-3) Silver iodobromide emulsion (Em-2) Silver iodobromide emulsion (Em-4) Sensitizing dye (SD-12) Enhanced dye (SD -10) Yellow coupler (Y-2) High boiling point solvent (Oij'-2) Gelatin 0.99 0, 085 0.012 0.25 1.60 (MS-1) 0.12 (H3-2) 0. 29 (BH) 0.20 0.20 0.80 2.0XIO-' (mol/1 mole of silver) 4.8X10-' (mol/1 mole of silver) 0.27 0.17 1.22 Formalin scavenger (MS-2) 0.0 13th layer; 1st protective layer (Pro-1) Fine-grain silver iodobromide emulsion 0.4 (average grain size 0.08 μm Ag+ 1 mol%) Iso-external absorber (
UV-1) 0.058 isotropic absorber (U
V-2) 0.083 high boiling point solvent (o+z-
1:+0.06 high boiling point solvent (Oil-3
) 0.06 formalin scavenger (
H5-1) 0,047 Formalin scavenger (H3-2) 0.22 Gelatin 1.49 14th layer; 2nd protection JiF (prO-2) alkali-soluble mantle agent (average particle size 2 μm) 0.12 Poly Methyl methacrylate (average particle size 3 μm) 0.018 Gelatin 0.55 In addition to the above composition, coating aid 5u-1, auxiliary agent 5u-2, viscosity regulator, hardening agent H-1, 2, stable Agent 5T-1, antifoggant AF-IMw: 1) 00,000 of AF-2 was added.

dispersion C.H.

2 C n) 1 aOtS l U3Na M M H H H υH 0■ COOC4H9 1j2-4 H C 0]1 U■ 2H5 (SD-1) (SD-2) (SD (CHz)asO3” Czlls (SD 2H5 C2I+ 5 (C)+2)3503" (C)If) zsO3Na (SD (C1lz) 4SO:l" (CHz) 3SO31)N (Cztls) 3D-
6 SD (CH2) 3SO:IcI (C1)□)3s031)N(Cz)Is) :1D (CI(2) 4SO3e C2HS SD SD ■ SD (CH2):+SO3゜(CHz)zsO□HN (Czlls): 1Su ■ Su T-1 H F-1 F The emulsion used in the above sample is as follows.

The average particle size is shown as the long side particle size converted to a cube with the same volume. Each emulsion was optimally gold-sulfur sensitized.

Em-1, Em-2 and Em-4 used a multi-structure silver halide crystal disclosed in JP-A-61-245151 as a technique for increasing sensitivity. The manufacturing conditions for these emulsions are the Chondral double jet method using an ammoniacal silver nitrate aqueous solution, and the silver halide formation temperature is Em-1 of 40.
°C, Em-'l, Em-4 is 50 °C, pH is 9-8.

Sample-102 (invention) Em-1 and Em-'l in sample-101.

Em-4 with Capri, Em-IB with excellent graininess and sensitivity,
Trial $4-10 replaced with Em-28 and Em-4B respectively
2 was created.

In order to improve the uniformity and sensitivity of the emulsion compared to the comparative example, each emulsion was created using a method of supplying iodide ions using silver iodide microcrystals as disclosed in Japanese Patent Application No. 63-224002. was manufactured. In addition, a method for producing a silver halide emulsion using a near silver nitrate aqueous solution was followed. That is, in the production method using ammoniacal silver nitrate, the pH at the time of silver halide formation is 7 to 6, and the Ag content is 7.8 to 1.
Silver halide formation was carried out at 60° C. and controlled at 0.1.

These emulsions have lower fog and higher sensitivity than the emulsions used in the comparative examples, and the same sensitivity is obtained by making the grain size smaller than the emulsions used in the comparative examples. By using these emulsions, the RM of the unexposed area, which is the structure of the present invention, can be improved.
A photosensitive material with low S granularity could be obtained. A comparison of emulsions is shown in the table below.

Example 3 Using samples 101 and 102, specific sensitivity and RMS granularity of unexposed areas were determined. Each measurement method followed the method shown in this specification. The results are shown below.

Example 4 Samples 101 and 102 were cut and perforated to the usual size of 35 m/m, loaded into a cartridge, and actually photographed using a 35N full-size camera.

24 images were taken for each sample (outdoor, indoor, indoor strobe light, etc.), 20 each, and developed and printed. Negative development was performed using CNK-4 processing manufactured by Konica ■.Printing was performed using an NFS-602QA system manufactured by Konica ■, and CNK-18 processing was used for paper development.

The number of prints is 480 for each sample, totaling 960.
Also, a commercially available l5O-100 was photographed at the same time as a dummy.
Printed with 40 rolls of color negative film mixed in.

For printing, 8 printers were assigned, each printing 10 sheets, and no reprinting was performed.

Eight print operators selected defective prints from the approximately 2,000 prints obtained in this manner and determined the yield of the prints.

Although it is not possible to obtain the absolute value of the print yield in the market because the photographing conditions and film storage conditions are constant, it is thought to indicate the relative print yield among the photosensitive materials.

The results are shown in the table below.

As can be seen from this result, sample 102, which had a lower RMS value in the unexposed area, had a high sensitivity of 400, but
It can be seen that when mixed in approximately the same number in a 100 photosensitive material, unlike conventional high-sensitivity photosensitive materials, printing can be performed with good yield similar to the 15O-100 photosensitive material.

Example 5 Using samples 101 and 102, the effect was confirmed in a rapid processing system as described below. Even in such a rapid processing system, the photosensitive material of the present invention having a low RMS value in the unexposed area had a high print yield.

(The amount of replenishment is the value per 1M of photosensitive material.) The processing was continued until three times the capacity of the stabilization tank was filled with replenisher.

However, stabilization treatment is performed using a 3-tank counter current.
The stabilization liquid was replenished into the final tank, and the overflow flowed into the previous tank.

In addition, part of the overflow of the stabilization tank following the fixer tank (
275rrll/m) was poured into the stabilization tank.

The composition of the color developing solution used is as follows.

Potassium carbonate 30 g Sodium bicarbonate 2.7 g Potassium sulfite 2.8 g Sodium bromide 1.3 g Hydroxylamine sulfate 3,2 g Sodium chloride
0.6g4-amino-3-methyl-N-ethyl-N-(β-hydroxylethyl)aniline'frM
Acid: 4, 6 g diethylenetriaminepentaacetic acid 3.0 g potassium hydroxide
Add 1.3 g of water to make 1), and adjust to P)1) 0.01 using potassium hydroxide or 20% sulfuric acid.

The composition of the color developer replenisher used is as follows.

Potassium carbonate 40 g Sodium bicarbonate 3 g Potassium sulfite 7 g Sodium bromide
0.5g hydroxylamine sulfate
3.2 g 4-amino-3-methyl-N-ethyl-N-(β-hydroxylethyl)aniline sulfate 6,0 g diethylenetriaminepentaacetic acid 3
．． Add 0g potassium hydroxide and 2g water to prepare 1), and adjust the pH to 10.12 using potassium hydroxide or 20% sulfuric acid.

The composition of the bleaching solution used is as follows.

1.3 Diaminopropanetetraacetic acid ferric ammonium 0.35 mol ethylenediamontetraacetic acid disodium 2g ammonium bromide 150g glacial acetic acid
40I1) Ammonium nitrate
Add 40 g water to make 1),
Adjust the pH to 4.5 using aqueous ammonia or glacial acetic acid.

The composition of the bleach replenishment solution used is as follows.

1.3 Diaminopropanetetraacetic acid ferric ammonium 0.40 mole Disodium ethylenediamontetraacetate 2 g Ammonium bromide 170 g Ammonium nitrate 50 g Glacial acetic acid
Add 61s+1 water to make 1), adjust the pH to 3.5 using aqueous ammonia or glacial acetic acid, and adjust as appropriate to maintain the pn of the bleach tank liquid.

The compositions of the fixer and fixer replenisher used are as follows.

Ammonium thiosulfate 100 g Ammonium thiocyanate 150 g Anhydrous sodium bisulfite 20 g Sodium metabisulfite 4.0 g Disodium ethylenediaminetetraacetate 1.0 g Add water to make 700 ml, and dilute with glacial acetic acid and aqueous ammonia.
) Adjust to 16.5.

The compositions of the stabilizing solution and stabilizing replenisher used are as follows.

1.2benzisothiazolin-3one 0.1g2,
On+4! Hexamethylenetetramine 0.2g Hexahydro-1,3,5-tris-(2hydroxyethyl-
5-triazine 0.3 g water was added to prepare 1), and the pH was adjusted to 7.0 using potassium hydroxide and 50% sulfuric acid.

After storing the treated sample in a constant temperature and humidity chamber at a temperature of 65°C and a relative humidity of 60% for 14 days, the maximum density and blue density (transmission) of the unexposed area were measured using an optical densitometer (PDA65) (manufactured by Konica ■) as representative characteristics. The difference in blue density (transmission) between the sample and the sample that was not treated in a constant temperature and humidity chamber was determined.

The results are shown in Table 1.

In the table, EDTA-Fe means ferric ammonium ethylenediaminetetraacetate, NTA-Fe means ferric ammonium nitrilotriacetate, DTP8.Fe means ferric ammonium diethylenetriaminepentaacetate, (A-1)-Fe,
(A-4) Fe etc. are (A-1) and (A-4) respectively.
) and other ferric ammonium salts.

Out wish Man Koni mosquito KK formula hand Continued Supplementary Positive book Heisei 3rd year January 10 days

Claims (2)

[Claims] (1) A silver halide color negative photograph having one or more red-sensitive silver halide emulsion layers, one or more green-sensitive silver halide emulsion layers, and one or more blue-sensitive silver halide emulsion layers on a support, and having a specific photographic sensitivity of 320 or more. In the photosensitive material, the RMS granularity of the unexposed area after the photosensitive material is developed is 15 or less for blue light, 13 or less for green light, and 14 for red light.
A silver halide color negative photographic material characterized by the following: (2) A silver halide color negative having one or more red-sensitive silver halide emulsion layers, one or more green-sensitive silver halide emulsion layers, and one or more red-sensitive silver halide emulsion layers on a support, and having a specific photographic speed of 320 or more. 1. A color image forming method, wherein the RMS graininess of an unexposed area after developing a photographic light-sensitive material is 15 or less for blue light, 13 or less for green light, and 14 or less for red light.