JPH0439646A - Silver halide color photographic sensitive material - Google Patents

Abstract

PURPOSE:To obtain the silver halide color photographic sensitive material having the high max. density and excellent development processing stability by specifying the swollen film thickness and swelling rate (SWELL) in 1st development. CONSTITUTION:The swollen film thickness in the 1st development is specified to 35 to 44mum and the swelling rate (SWELL) to 150 to 215%. The swollen film thickness is more preferably 40 to 44mum and the SWELL is more preferably 200 to 215%. The incorporation of a vinyl sulfone hardener and chlorotriazine hardener into the photosensitive material is more preferable and further, the gelatin compsn. in the surface protective layer furthest from a base is preferably >=40wt.% alphacomonent of about 100,000 mol. wt. The color photosensitive material which has the high max. density, is improved in the properties under development processing and has the excellent development processing 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 particularly to a silver halide color photographic light-sensitive material having a high maximum density and improved coating film properties.

[Prior art]

In recent years, the use of color slides in the professional market and among amateurs has been increasing year by year, and in Europe, amateurs also have the habit of enjoying color slide observation, and it remains very popular.

On the other hand, as a market demand, the maximum density of color slide originals is higher than the current one, and the shadow gradation (density balance)
is desired to be closer to neutral.

However, even if the amount of banks is increased to increase the maximum density, or an inhibitor is included in the photosensitive material to suppress the developability in the first development (black and white development), the sensitivity will become slower, which is undesirable. do not have. Furthermore, during the first development, the halogen ions (mainly iodide ions) eluted from the silver halide in the photosensitive material amplify the effect of suppressing silver development in other layers (interimage effect), increasing the maximum density. Not only do
If an attempt is made to improve color reproducibility, the normal composition ratio of silver halide increases, and silver developability deteriorates, and color developability also deteriorates.

On the other hand, Japanese Patent No. 1-302247 discloses a method of incorporating a hydroquinone type organic compound into a sensitive material. Although the interimage effect becomes larger and the color reproducibility improves, the shelf life and development processing stability of the photosensitive material deteriorates, so that it is not at a level that is acceptable in the market.

Furthermore, the occurrence of scratches on photosensitive materials during development processing has been cited as a complaint in the market, and further improvements are desired.

[Purpose of the invention]

Therefore, the first object of the present invention is to provide a color photosensitive material with a high maximum density.

A second object is to provide a color photosensitive material with improved physical properties during development.

The third object is to provide a color photosensitive material with excellent development stability.

[Structure of the Invention] As a result of intensive studies, the present inventors have found that the swollen film thickness in the first development is 35 to 44 μm, and the swelling ratio (S
It has been found that this can be achieved with a silver halide color photographic material having a WELL) of 150 to 215%.

It is preferable that the light-sensitive material contains a vinyl sulfone hardener and a chlorotriazine hardener, and furthermore, the gelatin composition in the surface protective layer furthest from the support is 40% by weight of component a having a molecular weight of about 100,000. The above is a preferred embodiment because the effects of the present invention can be more fully exhibited.

The present invention will be further explained in detail below.

The swollen film thickness was 5 minutes after immersion in the first developer at 38°C for 6 minutes.
It was measured using a swollen film thickness measuring device manufactured by Inko Densi.

The swollen film thickness of the color photosensitive material according to the present invention is 35 to 44 μm.
m, more preferably 40 to 44 μm.

5WELL was immersed in the first developer at 38°C for 6 minutes.
It refers to the ratio (%) of the weight of water absorbed by a coated sample to the weight of the dry coating film, and was measured according to the following procedure.

After leaving the sample at 23° C. and 55% RH for 12 hours or more, the weight A is measured, and then immersed in the first developer at 38° C. for 6 minutes. Immediately after this, after quickly measuring the weight B, the paint film was washed off with bleach, etc., and the sample was dried at 23°C 155°C.
%RH for 12 hours or more, and then measure the weight C. 5W
ELL was calculated using the following formula.

5WELL is in the range of 150-215%, more preferably 200-215%.

The first developer of the present invention had the following composition.

% Br1tish Journal of Pho
tography Annual (1'115), 1
It can also be measured using the first developer described on pages 92-195.

First developer Sodium tetrapolyphosphate 2g Sodium sulfite 20g Hydroquinone
Monosulfonate 30g Sodium carbonate (monohydrate)
30g l-phenyl-4-methyl-4-hydroxymethyl-3
-Pyrazolidone 2g potassium bromide
2.5g potassium thiocyanate
1.2g potassium iodide (0.1% solution)
Add 2m12 water (pH 9,60)
1000 mff The gelatin contained in the silver halide photographic light-sensitive material of the present invention is hardened with a hardening agent.

Hardeners preferably used in the present invention include the vinyl sulfone hardeners shown below and the general formula [H■] or (H-
It is a chlorotriazine hardener represented by 4).

Vinyl sulfone hardeners preferably used in the present invention include aromatic compounds as described in German Patent No. 1,100,942, and as described in Japanese Patent Publication Nos. 44-29622 and 47-25373. Alkyl compounds bonded with heteroatoms such as those described in Japanese Patent Publication No. 47-8736, ester compounds such as sulfonamides and ester compounds such as those described in Japanese Patent Publication No. 49-24435, 1.
3.5- Tris[β-(hinylsulfonyl)propionyl]-hexahydro-5-triazine or JP-A-1989
1-44164.

Representative compounds thereof are shown below, but are not limited thereto.

H-1 H-11 0(CHzCHzSO2CH= CH2)2NH(CH
zCHzSO2CH-CHz)zc2H,c(cH2s
o2ct+= CHz) 3CsH+ 7C(CH2S
O2CH-CH2)3CH2= CH302CH2CH
CH2SO2CH= CH2502CH=CH.

(CH2=CH5O2CH2)xccHzBr(CH,
= CH302CH2)2cHcH(CH2SO2CH
-CHz)z(CH2-CHSOzCHz)3ccH2
0cH2c(CHzSOzCH-CL)sC(CH25
02CH=CH2).

CHlC(CH20CHzSOzCH=CH2).

C(CH20CHzSOzCH=CH2)*-1O N(CH2CH20CH2S02CH-CH2).

(CH2-CH302CH2) 3ccH2sO2cH
zcHzcQCOCHzCH2SO2CH=CHz H23CH2=CH3O2CH20CH2SO2CH=
CH2H24CH2-CH5OzCHzCONHCH2
CHzNHCOCHzSOzCH-CHzIn addition to the above-mentioned exemplified compounds, vinylsulfone hardeners preferably used in the present invention include compounds having at least three vinylsulfone groups in their molecular structure, such as exemplified compounds (
Reaction products obtained by reacting H-5) to [H-24] with a compound having a group that reacts with a vinyl sulfone group and a water-soluble group, such as jetanolamine, thioglycolic acid, sarcosine sodium salt, and taurine sodium salt. Including things.

General formula (H-1) - In the formula, R1 and R2 are each a chlorine atom, a hydroxyl group, an alkyl group, an alkoxy group, -0M group (here, M is a monovalent metal atom), NR1R2 group (Here, R
1 and R4 each represent a hydrogen atom, an alkyl group or an aryl group) or a -NHCOR, group (wherein R6 is a hydrogen atom, an alkyl group or an aryl group). However, R1 and R2 never become chlorine atoms at the same time.

General formula CH-11) In the formula, R6 and R7 are each a chlorine atom, a hydroxyl group, an alkyl group, an alkoxy group or a -〇M' group (here,
M' represents a monovalent metal atom).

Q' and Q' each represent a substituent representing -O-, -S- or -NH-, and L represents an alkylene group or an arylene group. p and q each represent 0 or l.

Regarding the chlorotriazine hardener (anulchloride hardener) represented by the general formula [H-■], US Pat. No. 3,645.743, JP-A-47-6151,
No. 47-33380, No. 51-9607, No. 48-
No. 19220, No. 51-78788, No. 52-606
No. 12, No. 52-128130, No. 52-13032
No. 6 and No. 56-1043, which can be used.

Bistarolotriazine hardeners (biscyanur chloride hardeners) represented by the general formula (H-n) are described in Canadian Patent No. 895.808 and Japanese Patent Publication No. 58-335.
42 and JP-A No. 57-40244, and can be used.

Next, typical examples of the compound represented by the general formula (H-1) or (H-I[) will be given, but the present invention is not limited thereto.

A compound represented by general formula (H-I).

Cl-1) [l-1(I-9) CI-11) IN n L,, LJ SI"13 N!"'Ishi21"I5 Compound represented by the general formula [:H-I[]: [■ 1] (It-7) [■ 2] [:n -8) [■ 3] [1l-4) 1:I[-5] In the present invention, a vinyl sulfone hardener and the general formula [ :H-I) and (H-11) are used to increase the film strength of the photographic emulsion layer and other hydrophilic colloid layers of the silver halide photographic light-sensitive material of the present invention. , will diffuse into all the layers to be coated, so it may be added to at least one layer or multiple layers selected from among the emulsion layer or auxiliary layer according to the present invention.The addition is performed using water or alcohol (
For example, 1 to 100 mg of gelatin is added per 1 g of gelatin.

The addition method may be either a batch method or an in-line method. The timing of addition is not particularly limited, but it is preferably added immediately before coating.

Furthermore, a hardening agent known in the photographic industry may be used in combination. For example, aldehyde hardeners, epoxy hardeners, ethyleneimine hardeners, methanesulfonic acid ester hardeners, carbodiimide hardeners, inoxazole hardeners, polymer hardeners, etc. can be mentioned.

Gelatin commonly used in the photographic industry includes alkali-processed gelatin, which involves treatment with limestone, and acid-processed gelatin, which involves treatment with hydrochloric acid, etc., in the manufacturing process from collagen. It is manufactured using raw materials such as

For details on the properties and other properties of these gelatin manufacturing methods, see, for example, The Macro by Arthur Veis.
olecularChemisLry of Ge1a
tinJ, Academic Press, 187
-217 pages (1964), T. H. James:
The Theory of the Photography
phic Process 4th, ed, 1977,
(Macmillan) 55 pages, Scientific Photography Handbook (top)
Pages 72-75 (Maruzen), Basics of Photographic Engineering - Silver Salt Photography Edition 1
It is described on pages 19 to 124 (Corona Publishing).

Regarding the molecular weight of gelatin, see D., Lorry and
M.

Vedrines: Proceedings of
the 4th JAG Conference,
Fribourg, 5ept-+ 1983+ 13
5. Rikuyo Ohno, Hiroyuki Kobayashi, Shinya Mizusawa: Journal of the Photographic Society of Japan,
47.237 (1984), etc., the α component (molecular weight approximately 100,000), which is the structural unit of collagen, its dimer, trimer β component, γ component, and multimer. It is common for the composition to consist of certain high molecular weight components as well as low molecular weight components in which these components are randomly truncated.

The measurement of gelatin molecular weight distribution can be carried out in the above-mentioned literature or in the special
-80838, 62-87952, 62-26
No. 5645, No. 62-279329, No. 64-467
As described in No. 42, etc., this is carried out by gel permeation chromatography (hereinafter referred to as "rGPC method").

The ratio of the α component of gelatin used in the present invention is determined by the GPC method under the following conditions.

(GPC method) a) Column: Asahipak, G5-620 (manufactured by Asahi Kasei Industries, Ltd.) 2 columns connected in series Column temperature 50°C b) Eluent: 081M KH2PO4 and 0.1M
Equivalent mixed solution of Na:HPO+ pH 6.8 Flow rate 1.0
m (two-layer m1nC) sample: 0.2% gelatin eluent solution injection volume 100 μQ d) Detection: Ultraviolet absorption spectrophotometer (UV wavelength 230 nm) Retention Time
In the chart (Figure 1) showing the change in absorption at 230 nm due to
Peaks due to the component, β component, and α component appear sequentially, and as the retention time becomes longer, the shape becomes more tail-like.

The ratio occupied by the α component in the present invention can be determined by calculating the ratio of the area of the peak of the α component in the above chart to the total area. Specifically, a line perpendicular to the horizontal axis is drawn from the minimum point to the left of the peak a of the α component that appears at about 23 minutes of retention time (in the direction where the retention time is smaller). Next, draw a line C perpendicular to the horizontal axis at a position of +1.5 minutes in retention time from peak a.

The ratio of the area of the area surrounded by the measurement curve c and the baseline to the total area is calculated.

α determined by the above method of gelatin used in the present invention
The proportion of the components is 40% by weight or more, more preferably 4% by weight or more.
It is 5% or more by weight.

Note that the proportion of the α component in the present invention is such that when gelatins with different α component values are blended to obtain the desired gelatin, even if any gelatin component is 40% by weight or less, the proportion of the α component in the entire colloid after blending is 40% by weight or less. It may be 40% by weight or more.

Further, it is preferable that the proportion of high molecular weight components in the gelatin used in the present invention is 3% or less.

The ratio of the high molecular weight component in the present invention can be determined by calculating the ratio of the area of the exclusion limit peak to the total area.

Specifically, draw a perpendicular line on the horizontal axis from the minimum point next to the peak that appears at about 15 minutes of retention time, and calculate the ratio of the area of the area to the left of the perpendicular line (high molecular weight component) to the total area. It is determined by

The gelatin of the present invention may be lime-treated gelatin or acid-treated gelatin, or may be gelatin made from cow bone, cow skin, pig skin, etc., but preferably from cow bone. It is a lime-processed gelatin produced.

The jelly strength (by baggy method) of the gelatin of the present invention is:
Preferably the weight is 250g or more.

Calcium content of gelatin of the present invention (by baggy method)
is preferably 11,000 ppm or less, particularly preferably 500 ppm or less. In order to reduce the calcium content in gelatin, treatment with an ion exchange resin column is generally preferably used.

The gelatin of the present invention can also be subjected to oxidation treatment with hydrogen peroxide or the like for the purpose of reducing photographic activity.

In obtaining the gelatin of the present invention, α with a molecular weight of about 100,000 is used.
Examples of means for increasing the components include the following means.

■Adjust the period, temperature, and other conditions for lime treatment of raw materials.

(2) Pretreatment I: Adjust the temperature and time when extracting gelatin from the raw material into the aqueous phase, and extract at a relatively low temperature of 50 to 60°C. Generally, extraction is performed sequentially as a first extraction, a second extraction, and a third extraction, but the first extraction is preferred, and it is more preferable that the extraction be performed in a short extraction time.

■ When concentrating, gelatinizing, and drying the extracted gelatin solution to obtain gelatin, do so at as low a temperature as possible (below 40°C) to prevent decomposition due to heat. Preferably, a vacuum concentration method or a concentration method using ultrafiltration is used.

■ Use molecular weight fractionation using an ultrafiltration membrane.

■ Use a molecular weight fractionation method based on the coacervation method using organic solvents such as alcohols.

In the present invention, the silver halide emulsion described in Research Disclosure No. 308119 (hereinafter abbreviated as RD308119) can be used.

The table below shows the locations.

[Item] (page of RD308119)
Iodine composition 993I-A manufacturing method
Section 994E Evitaquinylhalogen conversion Section 994T-C Halogen substitution Section 994I-C Metal containing
994I-D term monodisperse 995I-F
995I-F applied sensitive material
Negative 995I-8 Positive (internal fogging particle stage) Emulsion mixed and used 995I-1 Desilvering
No. 10 in the invention of 99511-A building blocks
The silver genenide emulsion used is one that has been subjected to physical ripening, chemical ripening, and spectral sensitization.

Additives used in such processes are listed in Research Disclosure No. 17643. No. 18716
and No. 30.8119 (each hereinafter referred to as RD176
43. (abbreviated as RD18716 and RD308119)
It is described in .

The table below shows the locations.

[Item] (page of RD308119)
(RD17643) (RD18716)
Chemical sensitizer 996DI-A section 2
3 648 Spectral sensitizer 996 IV-A-A
, B, C, D, H, H, l, 1 item 23-24 64
8-9 Supersensitizer 996 rV-A-E, 1
Section 23-24 648-9 Antifoggant
998 VI 24-2
5 649 Stabilizer 998 ■ Known photographic additives that can be used in the present invention are also described in the above Research Disclosure.

The relevant entries are shown in the table below.

[Item: l (page of RD308119)
(RD17643) CRD18716E
■-1 item 25 650 ■-1 item 25 V 24 ■-c, xmc item 25-26 ■ 25-26 ■ ■ 25-26 II 26 651 26-27650 Color clouding prevention agent 1002 Dye image stabilizer 1001 Brightening agent 998 Ultraviolet absorber 1003 Light absorber 1003 Light scattering agent 1003 Filter dye 1003 Binder 1003 Anti-static agent 1006 Hardener 1004 Plasticizer 1006 Lubricant 1006 Activator/coating aid 1005 Matting agent 1007 Developer (contained in photosensitive material) ) Lo11 Various couplers can be used in the present invention, specific examples of which are described in the above Research Disclosure. The relevant entries are shown in the table below.

[Item] (page of RD308119)
(RD17643) [RD18716] Yellow coupler 1001 ■-D item
■C-G term magenta coupler 1001 ■-D term ■C-G term cyan coupler 1001
■-RI term ■C-G term colored coupler 1002 ■-G term ■G term BAR
Coupler 1002 ■-F section Alkali-soluble coupler 1001 ■-E section The additives used in the present invention are:
It can be added by the dispersion method described in RD3081191rV.

In the present invention, the aforementioned RD1764328 page, RD1
Pages 8716647-8 and RD308119! The supports described in (2) can be used.

The photosensitive material of the present invention can be provided with auxiliary layers such as a filter layer and an intermediate layer described in the above-mentioned RD30811 (1).

The present invention covers color negative films for general use or movies, color reversal films for slides or televisions,
Color paper It can be applied to various color photosensitive materials such as color positive film and color reversal paper.

The photosensitive material of the present invention includes the aforementioned RD1764328-29,
Development processing can be carried out by the usual method described in page RD18716647 and RD308119, X■.

[Example] The present invention will be described in more detail below with reference to Examples, but the present invention is not limited thereto.

Example 1 Comparative sample 101 of a multilayer color light-sensitive material was prepared by sequentially coating each layer having the following composition on a subbed cellulose triacetate film support from the support side. The coating amount of each component is expressed in g/va''.

However, for silver halide, the coating amount is expressed in terms of silver.

1st layer (antihalation layer) Black colloidal silver UV absorber UV absorber UV absorber UV absorber High boiling point solvent 0 High boiling point solvent 〇- Poly-N-vinylpyrogelatin 2nd layer (intermediate layer) High boiling point solvent 0 -3 Gelatin third layer (low sensitivity red-sensitive layer) Silver iodobromide emulsion spectrally sensitized with red sensitizing dyes S-1 and S-2 (silver iodide 3.0 mol%, 0.30μ+n) 0 ．．
60 coupler C-10,37 High boiling point solvent 0-2 0.093 poly-
N-vinylpyrrolidone 0.074 Gelatin 1.351.17 0.24 0.14 0.072 0.072 0.072 0.31 0.098 0.15 2.02 Lydon-I 0,011 ■ 4th layer (High-sensitivity red-sensitive layer) Silver iodobromide emulsion spectrally sensitized with red sensitizing dyes S-1 and S-2 (silver iodide 3.0 mol%, O, SO μm) 0.6
0 coupler-C-10,85 High boiling point solvent 0-2 0.21 poly/N
-Vinylpyrrolidone 0.093 gelatin
1.56 5th layer (intermediate layer) Color mixing prevention agent A S -10,20 High boiling point solvent 0-3 0.25 Matting agent M A -10,0091 Gelatin 1.35 6th layer (
Low sensitivity green sensitive layer) Silver iodobromide emulsion spectrally sensitized with green sensitizing dye s-3 (silver iodide 3.0 mol%, 0.30 μm) 0.70 coupler M-10,31 Kabu-y -M-20,076 High boiling point solvent ○-30,059 Poly-N-vinylpyrrolidone 0.074 Gelatin 1.29 7th layer (
Highly sensitive green sensitive layer) Silver iodobromide emulsion spectrally sensitized with green sensitizing dye S-3 (silver iodide 3.0 mol%, 0.80 μm) 0.70 coupler M -10,80 coupler M- 20,19 Color mixing inhibitor A S -10,055 High boiling point solvent 0-3 0.16 PolyN
-Vinylpyrrolidone 0.12 gelatin
1.91 8th layer (middle layer) Gelatin 0.90 9th layer (
Yellow filter layer) Yellow colloidal silver 0.11 Color mixing inhibitor A S -10,068 High boiling point solvent 0-3 0.085 Matting agent MA-10,012 Gelatin 0.68 10th layer (low sensitivity blue sensitive layer) Blue Silver iodobromide emulsion spectrally sensitized with sensitizing dye S-4 (silver iodide 3.0 mol%, 0.30 μm) 0.70 coupler Y -10,86 Image stabilizer G -10,012 High boiling point Solvent 0-3 0.22 Poly-N
-Vinylpyrrolidone 0.078 compound F
-10,020 Compound F -20,040 Gelatin 1.09@11
Layer (high sensitivity blue sensitive layer) Silver iodobromide emulsion spectrally sensitized with blue sensitizing dye S-4 (silver iodide 3.0 mol%, 0.85 μm) 0.70 coupler Y-11,24 Image Stabilizer G -10,017 High boiling point solvent o -3031 Poly-N-vinylpyrrolidone 0.10 Compound F -10,039 Compound F -20,077 Gelatin 1.73 12th layer (protective layer-1) Non-photosensitive Fine grain silver iodobromide (silver iodide 1.0 mol%, 0.08 μm) 0
．． 075 Ultraviolet absorber Ultraviolet absorber Ultraviolet absorber Ultraviolet absorber Ultraviolet absorber High boiling point solvent High boiling point solvent Compound Compound Gelatin 13th layer (protective layer-2) Sliding agent WA X -10,041 Matting agent M A -20,0090 Matting agent M A-30,051 Surfactant S U-10,0036 Gelatin
0.55 (Note: used in each layer,
The average molecular weight of poly-N-vinylpyrrolidone is 350.0
It is 00. ) In addition to the above composition, this sample also contained gelatin hardeners H-1, H-2, H-3, water-soluble dyes Al-1, Al-2, Al-3, and an antifungal agent. DI-1゜0.
048 0.024 0.024 0.024 0.13 0.13 0.075 0.15 1.2 -I -I Stabilizer 5T-1 and antifoggant AF-1 were appropriately added as necessary.

The silver halide emulsion used in each photosensitive layer was JP-A-59-1
It was prepared with reference to the method of Example 1 of No. 78447.

All were monodisperse emulsions with a distribution width of 20% or less.

After desalting and washing with water, each emulsion was subjected to optimal chemical ripening in the presence of sodium thiosulfate, chloroauric acid, and ammonium thiocyanate. , 7-chitrazaindene, l-7enyl-5-mercaptotetrazole were added.

ciHs(t) C4H1(L) CIL(t) c4Hs(t) coHs(t) CH.

C4H*(L) M.A. Colloidal silica particles (average particle size 3.5 μm) MA-2 polymethyl methacrylate particles (average particle size 3.0 μm) MA 3 CH.

CH, cHl ■ Di-2-ethylhexyl phthalate dibutyl phthalate tricresyl phosphate (2+3) CQ: m: n = 30+30:4
0)AX ■ (Average molecular weight: 30.000) CH2COOCH2(CF2CFz)sH[(CHz=
CH30zCH2)sccHzsOz(CHz)z1
2N(C)12)zsOJI (CH2-CH30zCHz)z.

■ ■ T-1 Next, the amount of hardener applied in the photosensitive material (H-1, H-2゜H-3
) and the amount of gelatin applied were changed in the same manner as Sample 101 to prepare the samples shown in Table 1.

Table 1 Sample 108 is the same as sample 101 except that the gelatin in the outermost layer has a composition outside the invention, and sample 109 uses only H-2 and H-3 as hardeners. is sample 108
is exactly the same.

Samples 101-109 were exposed to white light through a step wedge for senontometry measurement, and the following development treatments were performed.

Processing process Processing time Processing temperature First development
6 minutes 38°C water washing
2111! Reversal 2
tt tt color development
5 tt tt adjustment
2y tt bleach
5 tt tt
Fixation 4 //
//Wash with water 4t
t // stable
i // Regular tumble tumble The composition of the processing solution used in the above processing step is as follows: First developer: Sodium tetrapolyphosphate 2g Sodium sulfite 20g Hydroquinone.
Monosulfonyl-h 30 g Sodium carbonate (monohydrate) 30 g 1-phenyl-4-methyl-4-hydroxymethyl-3
-Pyrazolidone 2g Potassium bromide, potassium thiocyanate, potassium iodide (0.1% solution) Add water (pH 9,60) Invert Liquid Nitrilotrimethylenephosphonic acid, hexasodium salt, tinn chloride (dihydrate) p- Sodium aminophenol hydroxide Add glacial acetic acid water (pH 5,75) Color developer Sodium tetrapolyphosphate Sodium sulfite Sodium tertiary phosphate (dihydrate) Potassium bromide Potassium iodide (0.1% solution) Sodium hydroxide Radic acid 2.5g 1.2g m0 1000mI2 g g 0.1g g 15m(2 1000m12 g g 6g g 0m0 g 1.5g N-ethyl-N-β-methanesulfonamidoethyl 3-
Methyl-4-aminoaniline FL salt 11g2.
2-ethylenedithiogetanol Add 1g water (pH 11,70) 100011Q adjustment Liquid sodium sulfite 12g Sodium ethylenediaminetetraacetate (dihydrate) 8g Thioglycerin 0.4m (diglacial acetic acid)
3m (add 1 water (pH 6,
15) 100100O bleaching solution Sodium ethylenediaminetetraacetate (dihydrate) 2g Ethylenediaminetetradayate iron III) Ammonium (dihydrate) 120g Ammonium bromide Add 100g water (pH 5,65) 10100O constant
Add liquid ammonium thiosulfate 80g sodium sulfite 5g sodium bisulfite 5g water (pH 6,60
) 1000+a (bistable liquid formalin (37% by weight) 5m12
Konidax (manufactured by Konica Corporation) 5mQ water was added to 10100O, and the first development was changed over time, and the maximum density (Dmax) was measured, and the results shown in Table 2 were obtained.

Table 2 As is clear from Table 2, the sample of the present invention has Dmax
is high, and Dmax variation with the first development time change is small.

Example 2 Using the sample of Example 1, the strength of the swollen film was examined.

Regarding the strength of the swollen film, the coated sample was cut into pieces with a width of 3.5 cm and a length of 14 cm, immersed in the color developing solution at 38°C for 6 minutes, and then a stainless steel pole with a diameter of 0.5 mm was inserted at the tip. Crimp the membrane surface with a needle attached to the
Continuously change the load on the hook while moving at a speed of m/see, and calculate the load (g) at which the membrane breaks (scratches occur).
).

The results are shown in Table-3.

Table-3 Dmax(5), Dmax(6), Dmax(
7) shows the maximum density when the first development time was 5 minutes, 6 minutes, and 7 minutes, respectively.

As seen from Table 3, the swollen film thickness and 5W outside the present invention
In ELL, the strength of the swollen membrane is degraded.

Further, even if the swollen film thickness and 5WELL are within the range of the present invention, the strength of the swollen film is degraded when hardening agents and gelatin are used that are outside the range of the present invention.

[Brief explanation of drawings]

Figure 1 shows the retention time of 230nm when gelatin is subjected to gel permeation chromatography.
It is a chart showing the absorption change of . a...Peak of σ component of gelatin b...Perpendicular line drawn from the minimum point in the direction where the retention time is smaller than a to the horizontal axis. C: Perpendicular line drawn from a to the horizontal axis at a position of +1.5 minutes in retention time. The hatched area in the center indicates the σ component.

Claims (3)

[Claims] (1) The swollen film thickness in the first development is 35 to 44 μm,
A silver halide color photographic material having a swelling ratio (SWELL) of 150 to 215%. (2) The silver halide color photographic light-sensitive material according to claim 1, wherein the light-sensitive material contains a vinyl sulfone hardener and a chlorotriazine hardener. (3) The silver halide color photographic photosensitive material according to claim 2, wherein the gelatin composition in the surface protective layer furthest from the support is 40% by weight or more of an α component having a molecular weight of about 100,000. material.