JPH0394248A - Silver halide color photographic sensitive material - Google Patents

Abstract

PURPOSE:To obtain a high sensitivity and excellent graininess and preservable property by incorporating silver halide emulsions consisting of planar silver halide particles of a core/shell type which have a specific monodispersibility and particle thickness/diameter ratio and contain the silver iodide content phase of a specific silver iodide content in the central part into one layer of silver halide emulsion layers. CONSTITUTION:This photosensitive material has at least one layer of the silver halide emulsion layers on a base. The silver halide emulsions consisting of the planar silver halide particles of the core/shell type which has >=70% monodispersion in the number of the silver halide particles and <5% average value of the ratio of the diameter to the thickness of the silver halide particles and has the high silver iodide content phase higher by 15.3mol% silver iodide content in the central part of the silver halide particles are incorporated into at least one layer of the silver halide emulsion layers. The sensitivity, graininess and preservable property are improved in this way.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a silver halide color photographic light-sensitive material, and more particularly to a silver halide color photographic light-sensitive material having improved sensitivity, graininess and storage stability.

[Prior art]

Photographic equipment such as cameras has recently become more and more popular, and opportunities for photographing using /X silver halide color photographic light-sensitive materials are also increasing. In this regard, there is an increasing demand for higher sensitivity and higher image quality of silver monohalide color photographic light-sensitive materials.

One of the dominant factors for achieving higher sensitivity and higher image quality in silver halide color photographic light-sensitive materials is /1 silver halide grains, and silver halide grains are used to achieve higher sensitivity and higher image quality. Particle development has been progressing in the industry for some time.

However, as is generally done by reducing the grain size of silver halide grains to improve image quality, sensitivity tends to decrease, and there is a limit to achieving both high sensitivity and high image quality. there were.

In order to achieve even higher sensitivity and higher image quality, research is being carried out on techniques to improve the sensitivity/' size ratio per silver halide grain.One of these is the use of tabular silver halide grains. Techniques using JP-A-58-111935, JP-A No. 58-111936, JP-A No. 58-111937,
It is described in No. 58-113927, No. 59-99433, etc. When these tabular silver halide grains are compared with so-called normal crystal/% silver halide grains such as octahedral, dodecahedral or hexahedral grains, when the volume of the silver halide grains is the same, the surface area becomes larger; This has the advantage that more sensitizing dye can be adsorbed onto the silver halide grain surface, resulting in even higher sensitivity.

Furthermore, JP-A No. 63-92942 discloses a technique for providing high iodine cores inside tabular silver halide grains, as disclosed in JP-A No. 63-1.
No. 51618 discloses a technique using hexagonal tabular silver halide grains, and JP-A-63-163451 discloses a technique using tabular silver halide grains in which the grain thickness with respect to the longest distance between twin planes is 5 or more. The effects of each on sensitivity and graininess are shown.

However, these conventional techniques still have limitations in achieving both high sensitivity and high image quality, and there has been a desire to develop better techniques.

[Purpose of the invention]

An object of the present invention is to provide a silver halide color photographic material which has high sensitivity, excellent graininess and good storage stability.

[Structure of the invention]

The object of the present invention is to have at least one silver halide emulsion layer on a support, and in at least one layer of the silver halide emulsion layer, 70% or more of the silver halide grains are monodispersed, and the average value of the diameter to thickness ratio of the silver halide grains is less than 5, and the silver halide grains have a high silver iodide content phase with a silver iodide content of more than 15.3% mole in the center. This is achieved by a silver halide color photographic light-sensitive material containing a silver halide emulsion consisting of core/shell type tabular silver halide grains having the following properties.

The effect of the present invention is more effectively achieved when the tabular silver halide grains are mainly hexagonal tabular and when the monodispersity of the grains is less than 20%, so these are preferred embodiments.

The present invention will be explained in more detail below.

In the present invention, tabular grains refer to grains having two opposing parallel main planes.

The average ratio of diameter to thickness (also referred to as aspect ratio) of the tabular silver halide grains used in the present invention is 1 or more and less than 5, more preferably 1 or more and less than 4, particularly preferably 1 or more and less than 3. It is. This average value is obtained by averaging the ratio of the diameter to the grain thickness of all the tabular grains; Good too.

The diameter of the tabular silver halide grains is indicated by the circle-equivalent diameter of the main plane (diameter of a circle having the same projected area as the main plane), and is preferably 0.1 to 5.0 μm, more preferably 0.1 to 5.0 μm. 2 to 4.0 μm, particularly preferably 0.3 to 3.0 μm
It is m.

The silver halide emulsion according to the present invention has a monodisperse grain size distribution. Monodisperse silver halide emulsion refers to one in which the weight of silver halide contained within a grain size range of ±20% around the average diameter d is 60% or more of the total weight of silver halide, preferably 65% or more of the total silver halide weight. % or more, more preferably 70% or more.

Here, the average diameter d is the frequency n1 of particles with particle size d,
The product n of and d13, X d . The diameter d is defined as the maximum value of 3. (3 significant figures, minimum 4 digits)
The diameter is determined by photographing a silver halide emulsion containing the tabular silver halide grains of the present invention at a magnification of 10,000 to 50,000 times using an electron microscope, and projecting the grains on the print. It can be obtained by actually measuring the area of . (The number of particles to be measured is 1000 or more indiscriminately.) The monodisperse emulsion used in the present invention is defined by t; the degree of monodispersity is preferably less than 20%, more preferably less than 18%. , most preferably less than 15%.

The ratio of the number of tabular silver halide grains contained in the silver halide emulsion used in the invention can be determined by counting the ratio on an electronic M@mirror photograph of the silver halide emulsion of the invention. The ratio of the number of tabular silver halide grains contained in the silver halide emulsion is 70% or more, preferably 75% or more, and more preferably 80% or more.

The tabular silver halide grains are preferably primarily hexagonal tabular.

Hexagonal tabular shape means that when a tabular silver halide grain is viewed in a direction perpendicular to its main plane, the ratio of the side of maximum length to the side of minimum length is preferably 2 or less, more preferably It is preferably 1.8 or less, most preferably 1.5 or less. This measurement can also be performed on an electron micrograph of a silver halide emulsion. Furthermore, the term "predominantly" means that 50% or more of all the tabular silver halide grains are hexagonal tabular silver halide grains.

The tabular silver halide grains contained in the silver halide emulsion used in the present invention are so-called core/shell type grains in which silver iodide is localized in the grain center and constitutes a high silver iodide content phase. It is.

The fact that silver iodide is localized in the center of the grain means that the average silver iodide content (J1) determined by X-ray fluorescence analysis and the X-ray microanalysis method are When comparing the average value (J,) of the silver iodide content measured on silver halide crystals that are 80% or more away from the center, the relationship J+>Jx is satisfied.

The x-ray microanalysis method will be explained.

Silver halide particles are dispersed in an electron microscope observation grid equipped with an energy dispersive X-ray analyzer, and the magnification is set so that one particle enters the field of view of the CRT with liquid nitrogen cooling, and AgLα and Integrate the intensity of the ILa line. The silver iodide content can be calculated using the intensity ratio of I La /A gLα and a calibration curve prepared in advance.

The silver iodide content of the high silver iodide content phase in the silver halide grains is higher than 15.3 mol%, preferably from 18 mol% to 45 mol%, more preferably from 20 mol% to 45 mol%. Below, most preferably 25 mol% or more 45
It is less than mol%.

The silver halide emulsion used in the present invention is
By using monodisperse spherical seed particles shaped by the method described in JP-A-57-92523 and stirring at a stirring frequency of 500 to 1200 revolutions/min using the stirrer described in JP-A-57-92523. Obtainable.

The exfoliation conditions may be any of the acidic method, neutral method, and ammonia method, and are disclosed in JP-A-61-6643, JP-A-61-14630, JP-A-61-112142, JP-A-62-157024,
No. 62-18556, No. 63-92942, No. 63
-151618, 63-1613451, 63
Known methods such as those disclosed in No. 220238 and No. 63-311244 can be used. Further, a conventional flocculation method, nude water washing method, etc. can be used.

The silver halide emulsion used in the present invention is silver iodobromide or silver iodobromochloride, and may be of surface latent image type or internal latent image type.

The silver halide emulsion used in the present invention can be chemically sensitized by conventional methods. Further, it is possible to optically sensitize to a desired wavelength range using a dye known as a sensitizing dye in the photographic industry. Sensitizing dyes may be used alone, but
You may use two or more types in combination.

Antifoggants, stabilizers, etc. can be added to the silver halide emulsion. Gelatin is advantageously used as binder for the emulsion.

The emulsion layer and other hydrophilic colloid layers can be hardened and can contain a plasticizer and a dispersion (latex) of a water-insoluble or sparingly soluble polymer.

A coupler is used in the emulsion layer of a light-sensitive material for color photography.

Furthermore, by coupling with a colored coupler having a color correction effect, a competing coupler, and an oxidized form of a developing agent, various 7-ragment compounds, namely development accelerators, bleaching accelerators, developing agents, silver halide solvents, and preparations can be produced. Compounds that release photographically useful 7-ragments such as colorants, hardeners, fogging agents, antifoggants, chemical sensitizers, spectral sensitizers, and desensitizers can be used.

The photosensitive material can be provided with auxiliary layers such as a filter layer, an antihalation layer, and an antiirradiation layer. These layers and/or the emulsion layers may contain dyes that are leached from the light-sensitive material or bleached during the development process.

A formalin scavenger, optical brightener, matting agent, lubricant, image stabilizer, surfactant, color fog preventive agent, development accelerator, development retarder, and bleach accelerator can be added to the photosensitive material.

As a support, paper laminated with polyethylene, etc.
Polyethylene tele-7 tallate film, baryta paper, cellulose triacetate, etc. can be used.

In order to obtain a dye image using the light-sensitive material of the present invention, commonly known color photographic processing can be performed after exposure.

〔Example〕

The present invention will be specifically described below with reference to Examples, but the present invention is not limited thereto.

Example 1 ■ Preparation of Emulsion (Em-1) As a comparative emulsion, core/shell type octahedral silver iodobromide grains (average grain size 1.3 μm, silver iodide content 5 mol%) were prepared in JP-A-1988-1998- It was prepared by the method described in No. 138538.

Next, as comparative emulsions, emulsions Em-2.3 and Em-4 containing core/shell type tabular silver halide grains were prepared as follows.

(2) Preparation of emulsion (Em-2) A 1.5% gelatin aqueous solution containing 44.9 g of potassium bromide was heated at 70°O. 1) 119 m of an aqueous solution containing 9.76 g of potassium bromide under stirring at H5.8
+ and 19 ml of aqueous solution 1 containing 13.96 g of silver nitrate were added at equal flow rates by a double jet method while maintaining pBr at 0.9. Next, aqueous solution 2.Oa containing 337 g of silver nitrate and aqueous solution 2.0Q containing 200.3 g of potassium bromide and 49.3 g of potassium iodide were added at equal flow rates by a double jet method while maintaining the pBr at 1.2. Next, an aqueous solution 4.OQ containing 1685 g of silver nitrate and an aqueous solution 4.0 OQ containing 1157 g of potassium bromide and 32.9 g of potassium iodide were added at equal flow rates by a double jet method while maintaining the pBr at 1.2. Silver halide grains were precipitated. Afterwards, it was desalted at 40°C, gelatin was added, redispersed, and then cooled to 20°C to solidify to obtain 1.5 kg of emulsion.

■ Preparation of emulsion (Em-3) Add 119 m (2.5 ml) of an aqueous solution containing 9.76 g of potassium bromide to 512 ml of a 1.5% gelatin aqueous solution containing 44.9 g of potassium bromide at 65°O and pH 5.8 with stirring. and 119 mQ of an aqueous solution containing 13.96 g of silver nitrate in pBr
was added at a constant flow rate by a double jet method while maintaining a constant value of 0.9. Next, 2.2 g of an aqueous solution containing 337 g of silver nitrate
4, potassium bromide 207.4g and potassium iodide 39.
2.2Q of an aqueous solution containing 44g were added at equal flow rates by a double jet method while maintaining the pBr at 1.2. Next, an aqueous solution 4.2Q containing 1685 g of silver nitrate and an aqueous solution 4.2Q containing 1157 g of potassium bromide and 32.9 g of potassium iodide were added at equal flow rates by a double jet method while maintaining the pBr at 1.2. Silver halide grains were precipitated. Subsequently, the emulsion was desalted, redispersed and coagulated in exactly the same manner as emulsion (Em-2) to obtain 1.5 kg of emulsion.

■Preparation of emulsion (Em-4) Add to 1.5% aqueous gelatin solution 5Q containing 44.9 g of potassium bromide at 70°O and pH 5.8 with stirring.
119 ml2 of an aqueous solution containing 9.76 g of potassium bromide and 119 m4 of an aqueous solution containing 13.96 g of silver nitrate were added at equal flow rates by a double jet method while maintaining pBr at 0.9. Next, 2.8a of an aqueous solution containing 337g of silver nitrate
and potassium bromide 193.2g and potassium iodide 59.2g
2.8Q of an aqueous solution containing g were added at equal flow rates by the double jet method while maintaining the pBr at 1.3. Next, add 3.5Q of an aqueous solution containing 1685g of silver nitrate and 1Q of potassium bromide.
3. An aqueous solution containing 157 g and 32.9 g of potassium iodide.
5Q were added at equal flow rates by a double jet method while maintaining the pBr at 1.2, and tabular silver halide grains were precipitated.

Subsequently, the emulsion (Em-2) was desalted, redispersed, and solidified in exactly the same manner as the emulsion (Em-2). 5 kg of emulsion was obtained.

Furthermore, emulsions Em-5 to Em-8 of the present invention were prepared as follows.

■ Preparation of emulsion (E+a-5) Add 300 g (0.0
containing 82 moles of silver halide) and heated at 70°C.
While stirring at pt 15.8, 2.5Q of an aqueous solution containing 337 g of silver nitrate and 2.5Q of an aqueous solution containing 193.2 g of potassium bromide and 59.2 g of potassium iodide were mixed at pBrl. 5
The mixture was added at equal flow rates using the double jet method while maintaining the same flow rate. Next, 4. an aqueous solution containing 1685 g of silver nitrate. 4. Aqueous solution containing OQ, 57 g of potassium bromide and 32.9 g of potassium iodide. OQ and OQ were added at equal flow rates by a double jet method while maintaining the pBr at 1.5, and tabular silver halide grains were precipitated. Afterwards, the mixture was desalted at 40°C, gelatin was added, redispersed, and then cooled to 20°C to solidify to obtain 1.5 kg of emulsion.

The stirring was carried out using a stirrer described in JP-A No. 57-92523 at a stirring speed of 700 revolutions/min.

■Preparation of emulsion (Eva-6) Add 300 g of the same monodisperse spherical seed emulsion as emulsion (Ea+-5) to 5 liters of a 2.0% gelatin aqueous solution, and heat at 75°C, pH
5.8 Aqueous solution 2 containing 337 g of silver nitrate with stirring
．． 84 and potassium bromide 188.5g and potassium iodide 6
2.8 f2 of an aqueous solution containing 5.8 g were added at equal flow rates by a double jet method while maintaining the pBr at 1.5.

Next, 3.5Q of an aqueous solution containing 111,685 g of nitric acid and 3.512 of an aqueous solution containing 1157 g of potassium bromide and 32.9 g of potassium iodide were added at equal flow rates by a double jet method while maintaining the pBr at 1.5. Silver halide grains were precipitated. Subsequently, the emulsion was desalted, redispersed and coagulated in exactly the same manner as the emulsion (Em-5) to obtain 1.5 kg of emulsion.

Note that stirring was performed at a stirring rotation speed of 800 rpm using the same stirrer as used for the preparation of Em-5.

■ Preparation of emulsion (Em-7) 1.5% gelatin aqueous solution 4. 5 (l i: emulsion (
Add 300 g of the same monodisperse spherical seed emulsion as Em-5),
The aqueous solution 2.4a containing 337 g of silver nitrate and the aqueous solution 2.4α containing 183.8 g of potassium bromide and 72.4 g of potassium iodide were mixed at 75°C and pH 5.8 to pBr.
They were added at equal flow rates by the double jet method while maintaining the temperature at 1.8. Next, an aqueous solution containing 685 g of silver nitrate 4. O
a, potassium bromide 1157g and potassium iodide 32.9g
4.012 g of an aqueous solution was added at an equal flow rate by a double jet method while maintaining the pBr at 1.8 to precipitate tabular silver halide grains.

Subsequently, desalination, redispersion, and
It was solidified to obtain 1.5 kg of emulsion.

Note that stirring was performed in exactly the same manner as in Em=6.

■Preparation of emulsion (E!1-8) Add 300 g of the same monodisperse spherical seed emulsion as emulsion (E!1-5) to 1.5% gelatin aqueous solution 5Q,
Aqueous solution 2,2a containing 337 g of silver nitrate and aqueous solution 2.2Q containing 189.7 g of potassium bromide and 64.2 g of potassium iodide were stirred at i5. Added at flow rate. Next, 4.0Q of an aqueous solution containing 1,685 g of silver nitrate and 4.0Q of an aqueous solution containing 1,157 g of potassium bromide and 32.9 g of potassium iodide were added at equal flow rates by a double jet method while maintaining the pBr at 1.8. Silver halide grains were precipitated. Subsequently, the emulsion was desalted, redispersed and coagulated in exactly the same manner as emulsion (E+a-5) to obtain 1.5 kg of emulsion.

Note that stirring was performed in exactly the same manner as Em-5.

Table 1 shows the characteristics of Em-1 to Em-8.

A photosensitive material was prepared by coating Em-1'' and Em-8 on a subbed transparent triacetate cellulose 7 film support as follows.

5 g of the following magenta coupler (M-1), 0.95 g of the following colored magenta coupler (CM-1), and 0.10 g of the following DIR compound (D-1) were dissolved in 5 mQ of dibutyl phthalate, and this was dissolved in alkanol B. (
Alkylnaphthalene sulfonate (manufactured by DuPont) 1
．． 0% aqueous solution 8IIIQ and 5% gelatin aqueous solution 70ml
It was mixed with Q and emulsified and dispersed in a colloid mill.

M-1 CM-1 CO Ca D-1 The dispersion obtained above and Em-1-Em-8,
350 g of emulsion (containing 40 g of silver) color-sensitized to optimal sulfur sensitization, gold sensitization, and green sensitization were mixed, and the amount of silver was 16 mg/dIa! It was applied to make it look like this.

A protective layer containing 2-3 g (per lm'') of gelatin was then applied over this to give samples 11 to 18.

These samples were subjected to sensitometric exposure with white light and processed through the processing steps described below to evaluate sensitivity and RillS granularity.

Processing process (38°C) Color development 3 minutes 15 seconds bleaching
6 minutes 30 seconds water
Wash 3 minutes/5 seconds
Arrive 6 minutes 30 seconds Wash 3 minutes 15
Stabilization for seconds, drying for 1 minute and 30 seconds. The composition of the treatment liquid used in each treatment step is as follows.

<Color developer> 4-Amino-3-methyl-N-ethyl-N-(β-hydroxyethyl)aniline sulfate 4.75g Anhydrous sodium sulfite 4.25g Hydroxylamine 1/'2 sulfate 2.0g anhydrous carbonate Potassium 37.5 g Sodium Bromide 1.3 g Nitrilotriacetic acid.
Trisodium salt (l hydrate) 2.5 g Potassium hydroxide 1.0 g Add water to make ta and adjust to pf{-10.0.

Bleaching solution> Ethylenediaminetetraacetic acid iron ammonium salt 100.0g Ethylenediaminetetraacetic acid diammonium salt 10.0g Ammonium bromide 150.0g Glacial acetic acid 10.0g Add water to make 1Q, and use ammonium water to adjust pH to 6.0.
Adjust to.

<Fixer> Ammonium thiosulfate 175.0g Anhydrous sodium sulfite 8,58 Sodium metasulfite 2.3g Add water to make IQ, and adjust to pH - 6.0 using acetic acid.

Stabilizer> Formalin (37% aqueous solution) 1.5m
+ (2 Konidax (manufactured by Konica Corporation) 7.
Add 5 mQ water to make 1Q.

Note that the relative sensitivity (S) is a relative value of the reciprocal of the exposure amount that gives a fog density of +0.1, and is expressed as a value with the green sensitivity of sample 1 as 100.

The RMS value is the concentration of the minimum concentration + 1.0, and the opening area is 25.
This value is 1000 times the standard deviation of the variation in concentration value that occurs when scanning with a 0μ1 microdensitometer, and is expressed as a value with the RMS value of Sample 1 as 100.

Table 2 shows the evaluation results of sensitivity and RMS granularity of coated samples 11 to 18 using Em-1=Em8 in relative values.

The samples using the emulsion of the present invention all show superior performance compared to the samples using the comparative emulsion.

Table 2 Example 2 Silver halide emulsions Em-1 to Ea+- used in Example 1
8 were subjected to optimal chemical sensitization.

Using each of these emulsions as (emulsion-■), each layer of the composition shown below was sequentially formed on a triacetyl cellulose film support from the support side to prepare multilayer color photographic materials 21 to 28. I made it.

No. 1N: Antihalation layer Gelatin layer containing black colloidal silver.

Second layer: Intermediate layer 2. Gelatin layer containing an emulsified dispersion of 5-di-t-octylhydroquinone.

3rd layer: low sensitivity red-sensitive silver halide emulsion layer average grain size 0.
Monodisperse core/shell emulsion (emulsion ■) consisting of 8 gBrl containing 7 mol% of 45 μm SAgr...Silver coverage: 1.
8g/m" Sensitizing dye I...5.OX per mole of silver
10-' molar sensitizing dye■...0 for silver l mole
．． 7X 10-' Morscian coupler (C i)...
- o.o. per mole of silver. iomol colored cyan coupler (CC-1)...0.002 mol DIR compound (D-2)...0.0005 mol DIR compound (D-3) per 1 mol silver ...0.003 mol per mol of silver HBS-IA...1.0 g
/m' Fourth layer: Gelatin layer, same as the second intermediate layer.

5th layer: High sensitivity red-sensitive silver halide emulsion layer Average grain size: 1.
3 μm, monodispersed emulsion (emulsion I) consisting of AgBrl containing 6 mol% of Agl...silver coating amount 2.2 g/m'' Sensitizing dye I...2.6X 10-' per mol of silver
Molar sensitizing dye■...0.7X per mole of silver 10
-'Morsian coupler (C-1)... 0.004 molsian coupler (C-2)... 0.014 mols per mol of silver Colored cyan coupler (CC-1) )...O. per mole of silver. OOQ 5 mol DIR compound (D-3)... 0.0005 mol per mol of silver HBS-IA- 0.37 g/m2 6th layer: Same as the 2nd intermediate layer, gelatin layer.

7th layer: Low-sensitivity green-sensitive silver halide emulsion layer Emulsion 1...
・Silver coating amount: 1.0 g/m" Sensitizing dye ■... 2.OX 10-' mol per mol of silver Sensitizing dye ■... 1.OX 10-' mol per mol of silver Magenta coupler (
M-1)... 0.090 mol per mol of silver Colored magenta coupler (CM.-l)... 0.007 mol per mol of silver DIR compound (D-4)... 0.002 mol per mol of silver DIR compound (D-5)...0.003 mol per mol of silver HBS-2A- 0.90
g/i'' 8th layer: Same as the 2nd intermediate layer, gelatin layer.

9th layer...High sensitivity green-sensitive silver halide emulsion layer Emulsion -■
...Silver coating amount 2.5g/+a" sensitizing dye ■...Silver l
1.2X 10-' mole sensitizing dye...
o per mole of silver. ax to 'mol Magenta Cobra (M-1)... 0.0 l molar force per 1 mole of silver Magenta Cobra (CM-1)... Silver 1
o per mole. oos mol DIR compound (D-4)...0.0002 monole per 1 mol of silver HBS-2A- 0.22 g/i" 10th layer: ・F erotic filter layer yellow colloidal silver and 2.5- and an emulsified dispersion of di-t-octylhydroquinone.

11th layer: Low sensitivity blue-sensitive silver halide emulsion layer Emulsion 1
...Silver coating amount 0.5g/m2 Sensitizing dye V...1.3X to 'mol yellow covlar (Y
-1)... 0.35 mol per mol of silver FIBS-2A... 0.25 g/+'' 12th layer 2 high-sensitivity blue-sensitive silver halide emulsion layer Emulsion - ■... Silver coating amount 1.2 g/m" sensitizing dye V...1.2 g/m" per mole of silver.
8X 10-' mol Yellow coupler (Y-1)... 0.04 mol per mol of silver HBS-2A... 0.25 g/m'' 13th layer: First protective layer silver iodobromide (Agl 1 mol%, average particle size 0.07 μm) Silver coating amount 0.4 g/ra” Gelatin layer containing ultraviolet absorbers UV-1 and UV-2.

No. 14111: Second protective layer polymethyl methacrylate particles (direction if M 1.5 μm)
and a gelatin layer containing formalin scavenger (HS-1).

In addition to the above composition, each layer contains a gelatin hardening agent (H-1).
) and (H-2) and a surfactant were added.

The compounds contained in each layer of the sample are as follows.

Sensitizing dye I: Anhydro-5.5'-dichloro-9-ethyl-3.3'-di(3-sulfobrovir)thiacarpocyanine hydroxide Sensitizing dye ■: Anhydro-9-ethyl-3.3' -G (3-Sulhopku Building) -4.5.4'. 5'-dibenzothiacanolepcyanine hydroxide sensitizing dye m: 7'-diphenyl-5.5'-diphenyl-
9-Ethyl-3,3'-di(3-sulfopyl)oxycarpocyanine hydroxide sensitizing dye ■: Anhydro-9-ethyl-3,3'-di(3-sulfopyl)-5.6. 5'6'-dibenzooxalpocyanine hydroxide sensitizing dye V: anhydride-3.37-di(3-sulfopyl)-4.5-benzo5'-methoxythiacyanine hydroxide C-2 M -1 C2H, D 4 0■ H-2 ((CH* <HSOzCHz) 3CCH2SO2C
H zcHz ) 2NCH zcI'bsOs KH
BS-IA Dioctyl 7-talate (DOP) HBS-2A Tricresyl phosphate (TCP) Each sample 2l to 28 prepared in this manner was exposed to wedge light using white light, and then subjected to the same development process as in Example 1. I did it.

Table 3 shows the evaluation results of the sensitivity and RMS granularity of the processed samples, both of which are shown as relative values when the value of sample 2l using Em-1 is taken as 100.

When the emulsion of the present invention was used, both sensitivity and RMS granularity were superior to those using the comparative emulsion.

Example 3 The color photographic material of Example 2 was stored under the following two conditions and then evaluated in the same manner as in Example 2.

(conditions) A: 4 days at 65°C and 30% RH

Claims (3)

[Claims] (1) It has at least one silver halide emulsion layer on a support, and in at least one of the silver halide emulsion layers, 70% or more of silver halide grains are monodisperse, and halogenated The average value of the ratio of diameter to thickness of silver particles is 5
halogenated core/shell type tabular silver halide grains having a high silver iodide content phase with a silver iodide content of more than 15.3 mol % in the center of the silver halide grains. A silver halide color photographic material containing a silver emulsion. (2) The silver halide color photographic light-sensitive material according to claim 1, wherein the tabular silver halide grains are mainly hexagonal tabular. (3) Monodispersity of the tabular silver halide grains is 20%
3. The silver halide color photographic light-sensitive material according to claim 2, wherein the silver halide color photographic material has a silver halide content of less than 20%.