JPH03132652A - Silver halide color photographic sensitive material having improved processing stability - Google Patents

Abstract

PURPOSE:To improve processing stability and to obtain the silver halide color photographic sensitive material having high quality by consisting the photosensitive material of a 3-layered structure coated with a low-sensitivity layer, middle- sensitivity layer and high-sensitivity layer in this order and specifying the coating amts. of silver of the silver halide emulsion layers. CONSTITUTION:The red sensitive, green sensitive and blue sensitive silver halide emulsion layers are provided as the photosensitive silver halide emulsion layers on a base. At least one layer of the emulsion layers is constituted of the 3-layered structure coated with the low-sensitivity, middle-sensitivity and high- sensitivity silver halide emulsion layers in this order successively from the side nearer the base. The coating amts. of the silver of the photosensitive silver halide emulsion layers are specified to 90 to 75% of the total coating amt. of the silver. The silver halide color photographic sensitive material having the excellent processing stability and preservable stability is obtd. 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 specifically, a silver halide color photographic light-sensitive material with improved processing stability and excellent storage stability. Regarding materials.

[Background of the Invention] In recent years, silver halide color photographic light-sensitive materials (hereinafter also referred to as color light-sensitive materials) have improved significantly, but in order to obtain even higher image quality, red-sensitive silver halide emulsions have recently been developed. It has been practiced to form multiple layers of a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer. In particular, multilayering is an essential means for improving graininess.

Conventionally, various techniques for improving the graininess of such color photosensitive materials are known, for example, British Patent No. 923,0
No. 45 discloses that the layer is divided into a high-speed emulsion layer and a low-speed emulsion layer containing a diffusion-resistant coupler that develops color in substantially the same hue, and that the maximum color density in the high-speed emulsion layer is adjusted to a low value to create a granular shape. Although it has been described that sensitivity can be increased without sacrificing quality, this technique has insufficient graininess.

Furthermore, in Japanese Patent Publication No. 49-15495, at least one layer of a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a blue-sensitive silver halide emulsion layer is arranged in order of a top layer, an intermediate layer, and a bottom layer. A color photosensitive material has been described which has a sensitivity such that the uppermost layer and an intermediate layer have a maximum color density of 0.6 or less, and this has significantly improved graininess in the middle density region, but has a high fog density. There were problems in that the gradation changes in the medium density range were highly dependent on processing.

Furthermore, JP-A-61-289349 discloses that in an emulsion layer in which at least one emulsion layer has a three-layer structure of a low-sensitivity silver halide emulsion layer, a medium-sensitivity silver halide emulsion layer, and a high-sensitivity silver halide emulsion layer, Among the silver halide emulsion layers, the maximum coloring density of the medium-sensitive silver halide emulsion layer exceeds 0.6, thereby producing a color light-sensitive material that has good graininess and has less gradation dependence on processing. Although this technique improves graininess, the process dependence of gradation is not sufficient in view of the user's desire for high image quality.

When the same color-sensitive layers are formed into three layers in this way, when each of the high-sensitivity silver halide emulsion layer, medium-sensitivity silver halide emulsion layer, and low-sensitivity silver halide emulsion layer is developed, each layer will be different from each other. At present, it is difficult to match the tonality, and in particular, gradation changes based on processing standards in numerous laboratories are a cause of deterioration in the quality of the finished image.

Therefore, in order to improve the processing variability between laboratories for the three layers in the same color-sensitive layer, the inventors of the present invention determined the amount of silver coated in the light-sensitive silver halide emulsion layer as a result of various studies. That is, the present invention was developed based on increasing the amount of silver in the non-photosensitive emulsion layer.

[Object of the Invention] An object of the present invention is to provide a silver halide color photographic material that has improved processing stability and excellent storage stability.

[Structure of the Invention The above object is to provide a silver halide emulsion layer having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer and a blue-sensitive silver halide emulsion layer as a light-sensitive silver halide emulsion layer on a support. In a color photographic light-sensitive material, at least one of the emulsion layers is coated in the order of a low-sensitivity silver halide emulsion layer, a medium-sensitivity silver halide emulsion layer, and a high-sensitivity silver halide emulsion layer from the side closest to the support. layered structure, and the amount of coated silver in the photosensitive silver halide emulsion layer is 90% to 90% of the total amount of coated silver.
This was achieved using a silver halide color photographic light-sensitive material characterized by a silver halide ratio of 75%.

The present invention will be explained in more detail below.

The silver halide color photographic light-sensitive material used in the present invention has a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a blue-sensitive silver halide emulsion layer on a support. Each of these emulsion layers consists of a low-sensitivity silver halide emulsion layer, a medium-sensitivity silver halide emulsion layer, and a high-sensitivity silver halide emulsion layer, and in particular, a red-sensitive silver halide emulsion layer and a green-sensitive silver halide emulsion layer. The layer consists of at least three layers: a low-sensitivity silver halide emulsion layer, a medium-sensitivity silver halide emulsion layer, and a high-sensitivity silver halide emulsion layer.

The reason for placing the low-sensitivity silver halide emulsion layer, medium-sensitivity silver halide emulsion layer, and high-sensitivity silver halide emulsion layer in this order in each silver halide emulsion layer was to take optical loss, developability, etc. into consideration. This is due to

Furthermore, each of the red-sensitive silver halide emulsion layer, green-sensitive silver halide emulsion layer, and blue-sensitive silver halide emulsion layer used in the present invention includes a low-sensitivity silver halide emulsion layer, a medium-sensitivity silver halide emulsion layer, and a medium-sensitivity silver halide emulsion layer. It consists of three layers of high-sensitivity silver halide emulsion layers.

In the present invention, the total coating amount of silver in the silver halide color photographic light-sensitive material is preferably 100 B/dm2 to 20 mg/dm2, and more preferably 80 mg/dm2 to 40 B/dm2.
mg/dm2. As a result, a silver halide color photographic material having excellent processing stability and storage stability can be obtained.

The silver halide color photographic light-sensitive material used in the present invention preferably has a total coated silver amount of 60 mg/dm' or less, of which the light-sensitive emulsion silver amount is 85% to 65% by weight.

Each silver halide emulsion layer has a three-layer structure in which silver halide emulsion layers of low sensitivity, medium sensitivity, and high sensitivity are coated in order from the side closest to the support.

The amount of silver contained in each of the low-speed, medium-speed, and high-speed silver halide emulsion layers used in the present invention is such that the total coated silver amount is 10
The amount of silver contained in the low-sensitivity silver halide emulsion layer, medium-sensitivity silver halide emulsion layer, and high-sensitivity silver halide emulsion layer can be set to any ratio as long as it is within the range of 0 mg/d+n2 to 20 rng/dm'. can do.

As the low-sensitivity silver halide emulsion layer, medium-sensitivity silver halide emulsion layer, and high-sensitivity silver halide emulsion layer used in the present invention, any one commonly used in this technical field can be used.

The silver halide color photographic material used in the present invention may contain a colored coupler.

The silver halide color photographic material used in the present invention can be used not only as a negative silver halide color photographic material but also as a positive silver halide color photographic material.

As the silver halide emulsion used in the silver halide color photographic light-sensitive material of the present invention, any conventional silver halide emulsion can be used.

The emulsion can be chemically sensitized by conventional methods, and can be optically sensitized to a desired wavelength range using a sensitizing dye.

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 synthetic polymer.

Furthermore, by coupling with a colored coupler having a color correction effect, a competitive coupler, and an oxidized form of a developing agent, a development accelerator, a bleach accelerator, a developer, a silver halide solvent, a toning agent, a hardening agent, Compounds that release photographically useful fragments such as 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 emulsion layers may contain dyes that are washed out of the light-sensitive material or bleached during the development process.

The photosensitive material of the present invention contains formalin scavenger-2 optical brightener, matting agent, slipping agent, image stabilizer, surfactant, color fog preventive agent, development accelerator, development retardant, bleach accelerator, etc. can do.

As a support, paper laminated with polyethylene, etc.
Polyethylene terephthalate 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] Next, the present invention will be described in more detail by showing Examples, but the present invention is not limited to these Examples.

In all the examples below, the amount of halogen (added in the IJII photographic light-sensitive material) is expressed in g per m2 unless otherwise specified. Silver halide and colloidal silver are expressed in terms of silver. Sensitizing dyes are expressed in moles per mole of silver.

Example 1 Sample No. 1 of a multilayer color photographic material was prepared by sequentially forming each layer having the composition shown below on a triacetyl cellulose film support from the support side.

Sample-1 (comparison) 1st layer; antihalation layer black colloidal silver (silver coating amount) 0.2 gelatin 0.4U V-10
,3 High boiling point solvent (Oil-1) 0.3 Second layer; Intermediate layer gelatin 1.0 Third layer; First red-sensitive silver halide emulsion layer Silver iodobromide (AgI 7mo1%
, octahedral, cubic equivalent particle size 0.3 μm) 0.
8 Gelatin 1.2 Sensitizing dye (S
-1) a x xo-4 sensitizing dye (S
-2) 5 x 10-' sensitizing dye (S
-3) 3 X 10-5 coupler (C-1
) 0.10 coupler (C-3)
0.25 colored coupler ((:C-1)
0.04DIR coupler (D-2) 0.
05 High boiling point solvent (Oil-1) 0.45
Fourth layer; second red-sensitive silver halide emulsion layer silver iodobromide (Ag
l 8mo1%, octahedron, cubic equivalent particle size 0.7μm
) 1.0 Gelatin 1.
3 sensitizing dye (S-1) 3XlO-' sensitizing dye (s-2) 2 x 10-' sensitizing dye (S-3) 2 x 10-' coupler (C-1) 0.10 coupler (C -3
) Q, 30 colored coupler (CC-1
) 0.03DIR coupler (D-2)
0.07 High boiling point solvent (Oil-1)
0.50 Fifth layer; Third red-sensitive silver halide emulsion layer Silver iodobromide (AgI 6mol1%, octahedral, cubic equivalent grain size 1.
0μ111) 1.6 gelatin
1.6 Sensitizing dye (S-1) lXl0
-' Sensitizing dye (S-2) 1xto-' Sensitizing dye (S-3) IX 10-' Coupler (C-2,) 0.10 Coupler (C-
1) 0.20 colored coupler (CG-
1) 0.02DIR coupler (D-2)
0.05 high boiling point solvent (0il-1)
0.40 6th N: Intermediate layer gelatin 0.80S C-
10,03 S C-20,02 High boiling point solvent (Oil-2) 0.05 No. 7
Layer; first green-sensitive silver halide emulsion layer silver iodobromide (8g17
++101%, octahedral, cubic equivalent particle size 0.3 μm)
0.4 gelatin 0.8
Sensitizing dye (S-4) 6 x 10-' sensitizing dye (S-5) 1xto-' sensitizing dye (
S-a) lX10-4 coupler (M-
1) 0.05 coupler (M-3) 0.25 colored coupler (CM-1) 0.04 DIR coupler (D-1) 0.06 high boiling point solvent (0il-2
) 0.40 8th layer; Second green-sensitive silver halide emulsion Silver iodobromide (8gI 8mol1%, octahedral, cubic equivalent grain size 07 μm) 0.8 Gelatin
1.1 Sensitizing dye (S-4)
3 X 10-' sensitizing dye (S-5)
5 X 10-' sensitizing dye (S-6)
5 x 10-' coupler (M-1)
0.05 coupler (M-3) 0.20
Colored coupler (CM-1) 0.03DI
R coupler (D-1) 0.05 high boiling point solvent (
Oil-2) 0.30 9th layer; 3rd green-sensitive silver halide emulsion layer Silver iodobromide (AgI 6mo1%,
Octahedron, cubic equivalent particle size 1.0 μrn) 1.
2 Gelatin 1.1 Sensitizing dye <
3-4) 2X 1o-4 sensitizing dye (
S-5) s x o+” sensitizing dye (S
-6) 5 x 10-' coupler (M-2
) 0.05 coupler (M-3)
0.10 colored coupler (CM-1)
0.02DIR coupler (D-1) 0.0
2 High boiling point solvent (0il-2) 0.30 10th layer; Yellow filter layer Yellow colloidal silver 0.05 Gelatin layer
1. O3C-10,03 3C-20,02 High boiling point solvent (Oil-2) 0.05 1st
1 layer; first blue-sensitive silver halide emulsion layer silver iodobromide (Agl
7mo1%, octahedron, cubic equivalent particle size 0.7μm)
0.2 Gelatin 1.3
Sensitizing dye (S-7) lXl0-3 coupler (Y-1) o, g.

DIR coupler (D-2) 0.10 High boiling point solvent (0il-2) 0.28 12th layer; 2nd blue-sensitive silver halide emulsion layer Silver iodobromide (AgI 8mo
1%, octahedral, cubic equivalent particle size 0.7μ01)
o, s.

Gelatin 0.50 sensitizing dye (S
-7) 5 X 10-' coupler (Y
-1) 0.50DIR coupler (D-2
) 0.08 high boiling point solvent (0il-2)
0.25 13th layer; 2nd blue-sensitive silver halide emulsion layer Silver iodobromide (AgI 6mol1%, octahedral, cubic equivalent grain size 1.0 μm) 0.70 Gelatin
0.70 sensitizing dye (s-7)
2 x 10-' coupler (Y-1)
0.20DIR coupler (D-2) 0
．． 01 High boiling point solvent (Oil-2) 0.0
7 14th layer; 1st protective layer Silver iodobromide (Ag 11 mol% average grain size 0.08 μm) 0.3 Gelatin 1.0 Ultraviolet absorber (U
V-1) 0.1 ultraviolet absorber (UV-2)
0.1 formalin scavenger (H5-1) 0
．． 5 Formalin scavenger (H5-2) 0.2 High boiling point solvent (Oil-1) 0.1 High boiling point solvent (0ff-3) 0.1 15th layer; 2nd
Protective layer gelatin 0.7 Alkali-soluble matting agent (average particle size 2 μm) 0.12 Polymethyl methacrylate particles (average particle size 3 μm) 0.02 Slip agent (WAX-1) 0.04 f Electricity adjusting agent (
5u-1) 0.004 In addition to the above composition, each layer also contains a coating aid (Su-2) and a dispersion aid (Su-2).
Su-2, 5u-3), gelatin hardener (l(-1)
and (H-2), a stabilizer (Stab-1), an antifoggant (AF-1, AF-2), and a preservative (DI-1) were added.

The compounds contained in each layer of Sample 1 are as follows.

-1 -2 -3 -4 -5 Shi! M -2 D -1 M-1 aU31 11+ WAX-1 0i - (CI(2=cH5Oz(:H2)20 2 -2 21'I5 2 3 - - l11 MW: 3 0 LIUUaH+7 Sample No. The amount of silver coated in emulsion layer 1 is 92.7% of the total amount of silver coated.

Next, Sample No. 2 was prepared by changing the 14th layer of Sample No. 1 to the following configuration.

14th layer: 1st protective layer Silver iodobromide (AgI 1 mol% average particle size 0.08 um) 0.1 Gelatin 1.0 Ultraviolet absorber (
UV-1) 0.1 ultraviolet absorber (UV-2)
0.1 formalin scavenger (O5-1)
0.5 formalin scavenger (O5-2) 0.2
High boiling point solvent (Oil-1) 0.1 High boiling point solvent (Oil-3) 0.1 The sample No.
The amount of silver coated in emulsion layer 2 was 95.2% of the total amount of silver coated.

Next, Sample No. 3 was produced by changing the 10th layer and 14th layer of Sample No. 011 to the following configuration.

10th layer; Yellow filter layer Yellow colloidal silver 0,10 gelatin layer
1, O3C-10,03 S C-20,02 High boiling point solvent (Oil-2) 0.05 1st
4 layers; 1st protective layer Silver iodobromide (AgI 1 mol% average particle size 0.08 um) 0.6 Gelatin 1.0 Ultraviolet absorber (U
V-1) 0.1 ultraviolet absorber (UV-2)
0.1 Formalin scavenger (MS-1) 0.5 Formalin scavenger (O5-2) 0.2 High boiling point solvent (
Oil-1) 0.1 high boiling point solvent (0il
-3) 0.1 The amount of coated silver in the emulsion layer of sample No. 3 was 88.6% of the total amount of coated silver.

Next, the third layer, fourth layer, fifth layer, and seventh layer of sample No. 3
Sample No. 4 was prepared in which the 8th layer, 9th layer, 11th layer, 12th layer, and 13th layer were changed to the following configurations.

Third layer; first red-sensitive silver halide emulsion layer silver iodobromide (Ag
I 7mo1%, octahedron, cubic equivalent particle size 0.3μm
) 0.5 gelatin 1.
3 sensitizing dye (s-1) 8xlO-' sensitizing dye (S-2) 5x10-' sensitizing dye (S
-3) 3 X 10-' coupler (C-
1) 0.11 coupler (C-3)
0.27 colored coupler CC (knee 1)
0.04DIR Cub-7-(D-2)
0.05 High boiling point solvent (0il-1) 0
．． 47 4th layer; 2nd red-sensitive silver halide emulsion layer Silver iodobromide (AgI 8 mo1%, octahedral, cubic equivalent grain size 0.7
μrn ) 0.9 gelatin
1.2 Sensitizing dye (s-B 3xlO-
'Sensitizing dye (s-2) 2 X to-'
Sensitizing dye (S-3) 2 x H)” coupler (C-1) 0.10 coupler (C-
3) '0.30 colored coupler FC
C-110,03DIR coupler (D-2)
0.07 High boiling point solvent (Oil-1) 0.
50 5th layer; 3rd red-sensitive silver halide emulsion layer silver iodobromide (
AgI 6mo1%, octahedron, cubic equivalent particle size 1.0μ
m) 1.3 gelatin
1.5 sensitizing dye (s-t) 1xlO-'
Sensitizing dye (S-2) lXl0-' Sensitizing dye (S-3) 1xto'' coupler (C,
-2) 0.11 coupler (C-1)
0.23 colored coupler (CG-1)
0.02DI11 coupler (D-2)
0.05 High boiling point solvent (0i1-1) 0
．． 44 7th layer; first green-sensitive silver halide emulsion layer Silver iodobromide (AgI 7mol1%, octahedral, cubic equivalent grain size 0.3
μm) 0.4 gelatin
0.8 sensitizing dye (S-4) s x
to” sensitizing dye (S-5) lXl0-'
Sensitizing dye (S-6) lXl0-' coupler (M-1) 0.06 coupler (M-3
) 0.27 colored coupler (CM-1
) 0.04DIR coupler (D-1)
0.08 high boiling point solvent (0il-2)
0.40 8th layer; second green-sensitive silver halide emulsion layer Silver iodobromide (Ag18mo1%, octahedral, cubic equivalent grain size 0.7
μm l 0.7 gelatin
1.1 Sensitizing dye (S-4) 3X
10-' Sensitizing dye (S-5) s x
1o-' Sensitizing dye (S-6) 5 X
10-' coupler (M-1) 0.05 coupler (M-3) 0.20 colored coupler (CM-1) 0.03DIR coupler (
D-1) -0,05 high boiling point solvent (Of 1-2)
0.30 9th layer; 3rd green-sensitive silver halide emulsion layer Silver iodobromide (Agl 8 mo1%, octahedral, cubic equivalent grain size 1.0 μm 1 1.0 Gelatin
1.1 Sensitizing dye (s-4)
2 X 10-' sensitizing dye (S-5)
s x to” sensitizing dye (S-a)
s x 1o” coupler (M-2)
0.06 coupler (M-3) o,
l.

Colored coupler (CM-1) 0.02DI
R coupler (D-1) 0.02 high boiling point solvent (
0il-2) 0.30 11th layer; 1st blue-sensitive silver halide emulsion layer Silver iodobromide (AgI 7mo1%
, octahedral, cubic equivalent grain size 0.7 μm) 0.
2 Gelatin 1.3 Sensitizing dye (S
-7) I X 10-' coupler (Y-
1) 0.88DIR coupler (D-2)
0.10 high boiling point solvent (0il-2)
0.28 12th layer; 2nd blue-sensitive silver halide emulsion layer Silver iodobromide (AgI 8mol1%, octahedral, cubic equivalent grain size 0.7 μm) 0.40 Gelatin
0.55 sensitizing dye (S-7)
5 X 10-' coupler (Y-1)
0.70DIR Cub-17-(D-2)
0.08 High boiling point solvent (0il-2) 0
．． 30 13th layer; second blue-sensitive silver halide emulsion layer silver iodobromide (Agl 8mo1%, octahedral, cubic equivalent grain size 1,
0μm) 0.60 gelatin
0.70 Sensitizing dye (S-7) 2
XIO-' coupler (Y-1) 0.20
DIR coupler (D-2) 0.01 High boiling point solvent (0il-2) 0.07 Sample N00
The amount of silver coated in emulsion layer 4 was 87.0% of the total amount of silver coated.

Next, sample No. 09 was prepared by changing the third layer, fourth layer, fifth layer, eighth layer, ninth layer, and thirteenth layer of sample No. 64 to the following configurations.
5 was prepared.

Third layer; first red-sensitive silver halide emulsion layer silver iodobromide (Ag
I 7mo1%, octahedron, cubic equivalent particle size 0.3μm
) 0.4 gelatin l・
2 sensitizing dye (S-1) 8X10-' sensitizing dye (S-2) 5X10-' sensitizing dye (
S-3) 3 X 10-' coupler (C
-1) o, ls coupler (C-3)
0.33 colored coupler FCC-1)
0.04DIR coupler (D-2),
0.05 High boiling point solvent (0il-1) 0
．． 60 4th layer; 2nd red-sensitive silver halide emulsion layer Silver iodobromide (Agl 8mo1%, octahedral, cubic equivalent grain size 0.7
μm) 0.7 gelatin
1.3 Sensitizing dye (S-1) Sensitizing dye (S-2) Sensitizing dye (S-3) Coupler (C-1) Coupler (C-3) Colored coupler (C (knee 1) DIR coupler ( D-2) High boiling point solvent (Oil-1) Fifth layer; Third red-sensitive silver halide emulsion layer Silver iodobromide (Ag
l 6mo1%, octahedral, cubic equivalent particle size 1.0μm) Gelatin sensitizing dye (S-1) s Sensitizing dye (S-2) 1 Sensitizing dye (S-3) 1 Coupler (C-2) Coupler (C-1) Colored coupler (CC-1) DIR coupler (D-2) High boiling point solvent (Oil-1) 3 X 10-' 2 X IQ-' 2 x IQ-' 0.15 0.40 0. 03 0.07 0.65 1.0 1.6 X 10-' X 10-' 10-5 0.20 0.25 0.02 0.05 0.50 8th layer; 2nd green-sensitive silver halide Emulsion layer silver iodobromide (Ag
■8mo1%, octahedron, cubic equivalent particle size 0.7μm l
0.6 gelatin 1.2
Sensitizing dye (S-4) 3 X 10-' Sensitizing dye (S-5> 5 X 10-' Sensitizing dye (S-6) 5 X 10-' Coupler (M-1) 0.10 coupler ( M
-3) 0.28 colored coupler (C:
M-1) 0.03DIR coupler (D-1)
0.05 high boiling point solvent (Oil-2)
0.42 9th layer: 3rd green-sensitive silver halide emulsion layer Silver iodobromide (AgI 6mol1%, octahedral, cubic equivalent grain size 1.0 μm) 0.8 Gelatin
Sensitizing dye (S-4) 2 X 10-4 sensitizing dye (S-5) 5 X 10-4 sensitizing dye (S-6) 5 X to-4 coupler (M-2) 0.10 coupler (M
-3) 0.15 colored coupler (CM
-1) 0.02DIR coupler (D -1)
0.02 high boiling point solvent (0il-2)
0.40 13th layer; 2nd blue-sensitive silver halide emulsion layer Silver iodobromide (AgI 6mol1%, octahedral, cubic equivalent grain size 1.0 μm) 0.50 Gelatin
0.70 sensitizing dye (S-7)
2 X 10-' coupler (Y-1)
0.35DIR coupler (D-2) 0.
01 High boiling point solvent (Oil-2) 0.10
The amount of silver coated in the emulsion layer of Sample No. 5 was 84.7% of the total amount of silver coated.

Next, sample N026 was produced by changing the first layer and fourteenth layer of sample N015 to the following configuration.

1st layer; antihalation layer black colloidal silver (coating amount of silver) 0.4 gelatin 0.4U V -10
,3 High boiling point solvent (Oil-1) 0.3 No. 14
Layer: First protective layer silver iodobromide (Ag 11 mol% average grain size 0.08Z7111) 1.
0 Gelatin 1.5 Ultraviolet absorber (UV-1) 0.1 Ultraviolet absorber (tJV-2
) 0.1 formalin scavenger (H5-1
) 0.5 formalin scavenger (H5-2) 0
．． 2 High boiling point solvent (Oil-1) 0.1 High boiling point solvent (Oil-3) 0.1 The sample N
The amount of coated silver in emulsion layer 6 is 76.9 of the total amount of coated silver.
%.

Next, sample No. 7 was prepared by changing the 14th layer of sample No. 6 to the following configuration.

14th layer; first protective layer silver iodobromide (AgI 1 mol% average grain size 0.0.8 um) 1.5
Gelatin 2.0 UV absorber (
UV-1) 0.1 ultraviolet absorber (UV-2)
0.1 formalin scavenger (H5-1)
0.5 formalin scavenger (H5-2) 0.2
High boiling point solvent (Oil-1) 0.1 High boiling point solvent (Off-3) 0.1 The sample No.
The amount of silver coated in emulsion layer No. 7 was 72.5% of the total amount of silver coated.

Next, these samples No. 081 to No. 017 were heated to a relative humidity of 6
After adjusting the humidity to 0%, it was sealed in a barrier bag and stored at a temperature of 40°C for 40 days. On the other hand, a sample prepared at the same time as the above was sealed in a barrier bag, and then stored at -30°C for 40 days.

After performing white exposure on these samples, color development was performed according to the following processing steps.

After that, follow the JIS standard rJIS K7614 How to find the ISO speed of color negative film for still photography.
Sensitivity was measured according to the following.

The sensitivity ratio x 100 was determined for the sample subjected to the heat treatment relative to the sample not subjected to the heat treatment.

(Test-1) Processing process [1 (38℃) Color development 3 minutes 15 seconds bleaching
Wash with water for 6 minutes and 30 seconds
Fixed for 3 minutes and 15 seconds
6 minutes 30 seconds washing with water 3 minutes 15 minutes
Second stabilization, drying for 1 minute and 30 seconds The composition of the treatment liquid used in each treatment step is as follows.

(color developer) Aniline/sulfate anhydrous sodium sulfite Hydroxylamine・ Anhydrous potassium carbonate sodium bromide 4.75g 4.25g 1/2 sulfate 2.0 g 37.5 g 1.3 g potassium hydroxide 1.0 g Add water and bring to 1°C.

((white liquid) 100.0 g ethylenediaminetetraacetic acid iron ammonium salt 10.0 g ethylenediaminetetraacetic acid diammonium salt 10.0 g ammonium bromide 150.0 g glacial acetic acid 10.0 mi' Add water and bring to 1°C, and add ammonia water. using pi(=6.
Adjust to 0.

(Fixer) Ammonium thiosulfate 175.0 g Anhydrous sodium sulfite 8.5 g Sodium metasulfite 2.3 g Add water to 1 j
Z and adjust to pl=6.0 using acetic acid.

(Stabilizer) Formalin (37% aqueous solution) 1.5
mR Konidax (Konica Corporation%) 7.5m
l! Add water and bring to 1°C.

Next, using samples No. 091 to No. 7, an amount corresponding to an area of 40 dm2 was continuously subjected to color development in the color developer 12.

The sample was exposed to light for 20 dm'' at an exposure amount equivalent to maximum density color development, and 20 dm' was left unexposed.

Thereafter, according to processing step [1] using a color developing solution, after white exposure, color development was performed, and photographic sensitivity was determined according to the JIS standard. Then, the value of the sensitivity ratio with respect to the normal processing step [1 piece] x 100 was determined.

(Test-2) In addition, various films, namely, Konica Co., Ltd. type color negative film GX-100, Fuji Photo Film Co., Ltd. type color negative film 5uper HR-100, Eastman Kodak Company color negative film Kodacolor VRG
-100 and a color negative film XR-100 manufactured by Agfagewald Co., Ltd., were used to continuously produce a color developing solution in an amount corresponding to an area of 20 dm2 in a color developing solution tfL.

The sample was exposed to light for 10 dm2 minutes at an exposure amount equivalent to maximum density color development, and for 10 d+n2 minutes it was left unexposed.

These solutions were mixed in a ratio of 1:1:1:1 to prepare a color developing solution, and the color developing solution was used in the processing step [1] After exposing samples No. 1 to No. 097 to white light,
Color development was performed, and photographic sensitivity was determined according to the JIS standard. And sensitivity ratio with normal processing step [1] X100
The value of was calculated.

(Test-3) The above results are shown in Table 1.

As is clear from the results shown in Table 1, the samples of the present invention were superior to the comparative samples in that 1) they had better stability with respect to the processing amount of color developer, and 2) they were processed regardless of the type of photosensitive material. It can be seen that the photosensitive material has excellent stability against color developing solutions, and 3) excellent storage stability.

[Effects of the Invention] The silver halide color photographic light-sensitive material of the present invention has a three-layer structure in which a low-speed layer, a medium-speed layer, and a high-speed layer are coated in this order, and the silver halide emulsion layer has a coating silver amount. By setting the amount of silver to 90% to 75% of the total coated silver amount, processing stability is improved and a silver halide color photographic light-sensitive material with high image quality can be obtained.

Claims (1)

[Claims] In a silver halide color photographic light-sensitive material having a red-sensitive silver halide emulsion layer, a green-sensitive silver halide emulsion layer, and a blue-sensitive silver halide emulsion layer as light-sensitive silver halide emulsion layers on a support, the emulsion layer At least one of the layers has a three-layer structure coated in the order of a low-sensitivity silver halide emulsion layer, a medium-sensitivity silver halide emulsion layer, and a high-sensitivity silver halide emulsion layer from the side closest to the support, and A silver halide color photographic material characterized in that the amount of silver coated in the silver halide emulsion layer is 90% to 75% of the total amount of silver coated.