JPH0444032A - Silver halide photographic sensitive material - Google Patents

Abstract

PURPOSE:To obtain high sharpness and to improve whiteness without degrading sensitivity by incorporating a dye which has >=0.01 absorbance with the dye alone of the wavelength at which the spectrum generated by an exposing light source exhibits the max. when the sensitivity is halved. CONSTITUTION:Hydrophilic colloidal layers are provided between silver halide emulsion layers and a base. The hydrophilic colloidal layers contain the dye to attain >=0.01 absorbance with the dye alone of the wavelength at which the spectrum generated by the exposing light source exhibits the max. when the sensitivity is halved by the addition of the dye to these layers. This dye is capable of enhancing the sharpness with the small amt. and lessens the degradation in the sensitivity and, therefore, the higher sensitivity is obtd. with the small amt. of a sensitizing dyestuff. Then, the whiteness is improved as well. The silver halide photographic sensitive material of paper, etc., having excellent whiteness and high sharpness is obtd. without degrading the sensitivity.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a silver halide photographic light-sensitive material, and more particularly to photographic paper (also simply referred to as paper) having excellent whiteness and high sharpness. ) and other silver halide photographic materials.

[Background of the Invention] Photographic paper is usually manufactured by providing a silver halide emulsion layer on a paper support, but in recent years, paper has been manufactured with a silver halide emulsion layer and a silver halide emulsion layer in order to improve sharpness. A dye-containing layer, an antihalation layer (AH
, U layer).

However, it is well known that when a dye is added to the AHU layer, residual color stains occur on the paper obtained after photographic processing, and the whiteness tends to deteriorate.

In recent years, even higher sharpness has been required to improve quality. Therefore, if the amount of dye is increased in order to improve sharpness, the problem arises that residual color only increases and sensitivity decreases.

Furthermore, in so-called red-sensitive and infrared-sensitive papers having an absorption wavelength of 600 nm or more, the :1 lil-sensitive dye itself has a strong tendency to have residual color.

Therefore, in order to obtain high sharpness without decreasing sensitivity, the inventors of the present invention discovered that when adding a dye to the antihalation layer in an amount that would reduce the sensitivity to 1/2, the wavelength at which the spectrum generated by the exposure light source is at its maximum was determined. In other words, by selecting a dye that has a high absorbance when the dye is added to the antihalation layer to achieve the same sensitivity, the initial objective is achieved. We have now completed the present invention.

[Object of the Invention] Therefore, an object of the present invention is to provide a silver halide photographic material such as paper that has excellent whiteness and high sharpness without reducing sensitivity.

[Structure of the Invention] The above-mentioned objects of the present invention are as follows: 1) A silver halide photographic light-sensitive material having a photographic constituent layer including a silver halide emulsion layer on a paper support coated with a resin on both sides. A hydrophilic colloid layer is provided between the emulsion layer and the support, and when a dye is added to the hydrophilic colloid layer and the sensitivity is reduced to 1/2,
1. A silver halide photographic light-sensitive material comprising a dye having an absorbance of 0.01 or more at a wavelength at which the emission spectrum of an exposure light source shows a maximum.

2) Each of these is achieved by the silver halide photographic light-sensitive material characterized in that the photographic constituent layer described in item 1 above contains a fluorescent brightener.

The present invention will be explained in more detail below.

In the present invention, the following dyes have an absorbance of 0.01 or more at the wavelength where the emission spectrum of the exposure light source shows a maximum when added to the hydrophilic colloid layer and the sensitivity is halved. Things can be mentioned. However, dye-
2 is a comparative dye.

U3Na Dye-2 Dye-3 Dye-4 The dye used in the present invention can improve sharpness with a small amount and has little decrease in sensitivity, so high sensitivity can be achieved with a small amount of sensitizing dye. The whiteness is therefore also improved.

Furthermore, by adding an optical brightener, the whiteness is further improved.

The silver halide photographic light-sensitive material used in the present invention is preferably a light-sensitive material in which the silver halide grains in the silver halide emulsion have maximum absorption at 1100 nm or more, and the amount of sensitizing dye in the silver halide emulsion is is 10 mg 1 mol Ag ~ 3
00 mg 1 mol Ag.

The amount of dye added to the hydrophilic colloid layer is 1
A range of 100 mg/m2 to 100 mg/m2 is preferred.

The optical brightener is contained in at least one of the photographic constituent layers on the support, including the hydrophilic colloid layer, and the optical brightener has the following general formulas [Ia], (I-b), (I
Compounds represented by -c) and (1-d) can be preferably used.

CI-a) CI-b) (1-c) 1ze2 Not limited to these.

(Margins below) (I-d) General formulas (1-a), (1-b), (1-C), (I-
In d), Y and Y2 represent an alkyl group. Z
I and Z2 do not represent a hydrogen atom or an alkyl group. n is l or 2. R+, Rz, Ra and 175 are an aryl group, an alkyl group, an alkoxy group, an aryloxy group, a hydronitoxy group, an amino group, a cyano group, a carboxyl group, an amide group, an ester group, an alkylcarbonyl group, an alkylsulfo group, or a dialkylsulfonyl group. Does not represent a group or a hydrogen atom.

R6 and R7 represent a hydrogen atom or an alkyl group (methyl group, ethyl group, etc.).

RI6 represents a phenyl group, a halogen atom, an alkyl-substituted phenyl group, an amino group, or a base-class or secondary amine.

Next, general formulas (1-a), (I-b), [I-c] (1-
Specific examples of the compounds shown in d) are given below. 4) υ [■ 8] [I 9] [1 10] [1 15] [■ 16] 13C C-C11゜(I-17) 1130 CC1h CI+3 18] Cl-193 20] 21] 26 ] (I- 22) (I-24) CI-25) 113 The amount of the fluorescent brightener used in the finished photographic paper is preferably 1 mg/rd to 200 mg/nT, more preferably 5 mg/rd to 50 mg/nr. is within the range of

The above-mentioned exemplary optical brighteners may be used alone or in combination of two or more. Further, optical brighteners other than the optical brighteners mentioned in 1. can be used in combination.

When a fluorescent whitening agent is used in combination, it is preferable that the total amount is the above content.

The layer to which the optical brightener is added may be in any layer among the photographic constituent layers including the antihalation layer on the support, but it is preferably added to both the silver halide emulsion layer and the antihalation layer.

The method of adding the optical brightener of the present invention is to dissolve it in a high boiling point solvent together with a low boiling point solvent if necessary, mix it with an aqueous gelatin solution containing a surfactant, and use a colloid mill, homogenizer, or ultrasonic dispersion device. It is added as an emulsified dispersion using an emulsifying device such as.

The silver halide emulsions used in the present invention include conventional silver halide emulsions such as silver bromide, silver iodobromide, silver iodochloride, silver chlorobromide, silver chloroiodobromide, and silver chloride. Any used can be used.

The silver halide grains may have a uniform silver halide composition distribution within the grain, or may be core/shell grains in which the silver halide composition differs between the inside of the grain and the surface layer.

The silver halide grains may be such that a latent image is mainly formed on the surface, or may be such that a latent image is mainly formed inside the grain.

The silver halide grains may have a regular crystal shape such as a cube, octahedron, or dodecahedron, or may have an irregular crystal shape such as a spherical shape or a plate shape. In these particles, any ratio of the (ioo) plane to the (111) plane can be used.

Further, the particles may have a composite form of these crystal forms, or particles of various crystal forms may be mixed.

The grain size of silver halide grains is 0.05 to 3
A vine with a diameter of 0μ, preferably 0.1 to 20μ is used.

The silver halide emulsion may have any grain size distribution. An emulsion with a wide grain size distribution (referred to as a polydisperse emulsion) may be used, or an emulsion with a narrow grain size distribution (referred to as a monodisperse emulsion) may be used alone or in combination.

Further, a polydisperse emulsion and a monodisperse emulsion may be mixed and used.

The silver halide grains used in the emulsion of the present invention are formed by cadmium salts, zinc salts, lead salts, thallium salts, iridium salts or complex salts, rhodium salts or complex salts, iron salts, etc. Alternatively, it is preferable to add a metal ion using a complex salt and include it inside the particles and/or on the particle surface, and it is particularly preferable that the rhodium salt or complex salt is present in an amount of 10-8 to 10-6 mol per mol.

In the emulsion of the present invention, unnecessary soluble salts may be removed after the growth of silver halide grains is completed, or they may remain contained.

Although the photosensitive silver halide emulsion can be used as a so-called post-thermal (Pr1mltive) emulsion without chemical sensitization, it is usually chemically sensitized.

Chemical sensitization can be carried out either alone or by sulfur sensitization using active gelatin or a sulfur-containing compound that can react with silver ions, reduction sensitization using reducing substances, and noble metal sensitization using gold or other noble metal compounds. Can be used in combination. As the sulfur sensitizer, thiosulfates, thioureas, thiazoles, rhodanines, and other compounds can be used.

In addition, there are no particular restrictions on the conditions such as temperature and p) during chemical sensitization, but the p value is 4 to 9, especially 5 to 8.
is preferable, and the pAg value is 5 to 11, particularly 8 to 10.
It is preferable to keep it at In addition, the temperature is 40°C to 9°C.
0°C, especially 45°C to 75°C is preferred.

In addition to the aforementioned sulfur sensitization and gold/sulfur sensitization, the silver halide emulsion used in the present invention can be produced by reduction sensitization using a reducing substance.
A noble metal sensitization method using a noble metal compound can also be used in combination.

As the photosensitive emulsion, the above emulsion may be used alone,
Two or more emulsions may be mixed.

When carrying out the present invention, for example, 4-hydroxy-6-methyl-1,3,
Various stabilizers can also be used, including 3a,7-tetrazaindene, 5-mercapto-1-phenyltetrazole, 2-mercaptobenzothiazole, and the like.

As a hydrophilic colloid that can be used in the silver halide emulsion layer and intermediate layer used in the present invention, it is advantageous to use gelatin, but other hydrophilic colloids can also be used alone or in combination with gelatin. .

In the present invention, the gelatin may be either lime-treated or acid-treated. Details of the method for producing gelatin are described in The Macromolecular Chemistry on Gelatin, written by Arthur Vuis (Academic Press, published in 1964).

Examples of the hydrophilic colloids include gelatin derivatives, graft polymers of gelatin and other polymers, proteins such as albumin and casein; cellulose derivatives such as hydroxyethyl cellulose, carboxymethyl cellulose, and cellulose sulfate esters; sodium alginate;
Sugar conductors such as starch derivatives; various types such as single or copolymers of polyvinyl alcohol, polyvinyl alcohol partial acetal, poly-N-vinylpyrrolidone, polyacrylic acid, polymethacrylic acid, polyacrylamide, polyvinylimidazole, polyvinylpyrazole, etc. There are synthetic hydrophilic polymer substances.

The sensitizing dye used in the present invention is used at a concentration equivalent to that used in ordinary negative-working silver halide emulsions. In particular, it is advantageous to use the dye at a concentration that does not substantially reduce the inherent sensitivity of the silver halide emulsion. Approximately 1.0% of sensitizing dye per mole of silver halide. Ox to-' ~ approx. 5 x 10-
'mole is preferred, especially at a concentration of about 4.times.10@-5 to 2.times.10@-4 mole of sensitizing dye per mole of silver halide.

The diagnosis can be made by using one type of sensitizing dye or a combination of 2 fm or more, and sensitizing dyes other than those mentioned above may also be used in combination.

A color coupler can be added to the silver halide photographic material of the present invention, if necessary, and for example, at least one of a cyan coupler, a magenta coupler, and a yellow coupler is added.

The silver halide photographic material according to the present invention may contain water-soluble dyes other than those mentioned above as filter dyes in the wood-philic colloid layer or for various purposes such as preventing irradiation and halation.

Such dyes include oxonol dyes, hemioxonol dyes, styryl dyes, merocyanine dyes, cyanine dyes, azo dyes, and the like. Among them, oxonol dyes, dihemioxonol dyes, and merocyanine dyes are useful.

In the silver halide photographic light-sensitive material according to the present invention, when dyes, ultraviolet absorbers, etc. are included in the wood-philic colloid layer, they may be mordanted with a cationic polymer or the like.

Various compounds may be added to the above-mentioned photographic emulsion in order to prevent a decrease in sensitivity and the occurrence of fog during the manufacturing process, storage, or processing of the silver halide photographic light-sensitive material.

The silver halide photographic light-sensitive material of the present invention contains antifoggants, ultraviolet light inhibitors, antistatic agents, matting agents, surfactants, thickeners, plasticizers, hardeners, and coating aids that are commonly used in light-sensitive materials. Agents, emulsifiers, modifiers, antifoaming agents, matting agents, slipping agents, toning agents, and the like can be used.

In the manufacturing method of the present invention, the pH of the coating liquid is 5.3 to 7.
．． It is preferable that it is in the range of 5. For multi-layer coating,
It is preferable that the pH of the coating liquid obtained by mixing the coating liquids for each layer in the ratio of coating amounts is within the above range of 5.3 to 7.5. If the pH is less than 5.3, the progress of hardening will be slow, which is undesirable, and if the p)I is greater than 7.5, it will often adversely affect photographic performance, which is undesirable.

The photosensitive material of the present invention may further contain various additives depending on the purpose.

These additives are described in more detail in Research Disclosure Vol. 176 Item/7643 (1978
(December 2016) and Vol. 187, Item/8716 (1
(November 979).

In carrying out the silver halide photographic material of the present invention, for example, the emulsion layer and other layers can be constructed by coating on one or both sides of a flexible support commonly used in photographic materials.

Supports, particularly those useful as flexible supports, include films, baryta layers or films of semi-synthetic or synthetic polymers such as cellulose nitrate, cellulose acetate, cellulose acetate butyrate, polyethylene, polyvinyl chloride, polyethylene terephthalate, polycarbonate, etc. Paper coated with or laminated with an α-olefin polymer (eg, polyethylene, polypropylene, ethylene/butene copolymer) or the like. Preferably, a paper support is coated or laminated with a polyolefin resin such as polyethylene, polypropylene, or ethylene/butene copolymer on both sides.

The support may be colored using dyes or pigments. It may be made black for the purpose of blocking light. The surface of these supports is generally treated with an undercoat to improve adhesion with emulsion layers and the like.

The surface of the support may be subjected to corona discharge, ultraviolet irradiation, flame treatment, etc. before or after the undercoating treatment.

In the silver halide photographic light-sensitive material according to the present invention, the photographic emulsion layer and other hydrophilic colloid layers can be coated on the support or on other layers by various coating methods. For coating, a dip coating method, a roller coating method, a curtain coating method, an extrusion coating method, etc. can be used.

The photographic processing of the silver halide photographic material according to the present invention is as follows:
Various methods can be used without particular limitations. For example, research disclosure (Research Disclosure)
closure) No. 176, pages 28-30 (RD17
Any of the various methods and various treatment liquids can be applied, such as those described in 643). The processing temperature is usually selected between 18°C and 50°C, but it may also be below 18°C or above 50°C.

As the developing agent, dihydroxybenzenes (e.g. hydroquinone), 3-pyrazolidones (e.g. 1-phenyl-3-pyrazolidone), aminophenols (e.g. N-methyl-〇-aminophenol), etc. are used alone or in combination. be able to.

Developing solutions generally contain various preservatives, alkaline agents, and p.
) Contains buffering agents, antifoggants, etc., and further includes solubilizing agents, color toners, development accelerators, surfactants, antifoaming agents, water softeners, hardening agents, viscosity imparting agents, etc. as necessary. But that's fine.

As the fixer, one having a commonly used composition can be used. As the fixing agent, in addition to thiosulfates and thiocyanates, organic sulfur compounds known to be effective as fixing agents can be used. The fixer may contain a water-soluble aluminum salt as a hardening agent.

Exposure for the silver halide emulsion used in the present invention varies depending on the state of chemical sensitization, purpose of use, etc., but includes tungsten, fluorescent lamps, mercury lamps, arc lamps, xenon sunlight, xenon flash, cathode ray tube flying spot, laser light, etc. Various types of light sources such as , LED light sources, and electron beams can be used as appropriate.

In addition to normal exposure of 1/1000 to 100 seconds, the exposure time is 1/1000 to 100 seconds for xenon flash, cathode ray tube, and laser light.
Short-time exposures of /10' to 1/10' seconds can be applied.

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples of the present invention, but the present invention is not limited to these examples.

Example 1 (Preparation of optical brightener emulsified dispersion) 0.8 g of oil-soluble optical brightener (I-13) was mixed with 12 mI of talesyl diphenyl phosphatenol! ．． 5 containing 0.5 g of triisopropylnaphthalene sulfonic acid sodium salt dissolved in
% gelatin aqueous solution 260 mJZ, and an emulsified dispersion was prepared by ultrasonic dispersion.

(Preparation of antihalation layer coating solution) The dyes listed in Table 1 were added to the gelatin aqueous solution in the amounts listed in Table 1, and 1 of the optical brightener emulsified dispersion was added to the aqueous gelatin solution.
2-sulfonate succinic acid bis(2-ethylhexyl) ester sodium salt as a coating aid and styrene as a thickener. -A coating solution for anti-halation layer was prepared by adding a maleic anhydride copolymer.

(Adjustment of silver halide emulsion layer coating solution) ■ Formation process of silver halide grains Solution 1 ossein gelatin water Solution 2 gNO3 water solution 3 gCn Br water solution 4 Br I water Ammonia water (28%) solution 5 3RhBr6 to 1% 0g 00mu 　0　g 50mJZ 8g 1g 50mIt 2g 0.6g 200 m11 40　IIIfl 1 +nIl.

25% KBr solution 1999 mA solution 6 0.5% to 2 [Ir (IV) C-j! 6] Liquid
0.75 g water
Collect and add 2 mj2 (rhodium salt addition amount is 4.2 x 10-6 mol per 1 mol of silver halide) from solution 5 into 36.75 mJ2 solution 1, and after 2 minutes add solutions 2 and 3 at the same time. After injecting for 5 minutes and aging for 10 minutes, solution 4 was injected for 1 minute, and after the injection of solution 4 was completed, 0.25 mfl from solution 6,
(The amount of iridium salt added is 2.
9 x 10-' moles) were taken and added.

After aging for 20 minutes after addition of solution 6, acetic acid (20%) was added to adjust p) to 15.7.

(2) Desalting step Next, Solution 7 below was added to this prepared solution and stirred for 5 minutes.

Solution 7 Agglomerated gelatin agent (amino group substituted -CO old 1←() modification rate 90%) 12g
water
100mI! .

Thereafter, the pH was adjusted to 4.4 with acetic acid, gelatin was coagulated and precipitated, and the supernatant liquid was drained.

Next, add pure 3k, then add NaOH to pH 4,
90 and stirred and dispersed. After that, pl+ with acetic acid again.
was adjusted to 4.60 to flocculate and precipitate the gelatin, and the supernatant liquid was drained.

This operation was repeated to desalinate a total of 3 times, and then 100 mg of phenol and the following compound [a] were added as an anti-piping agent for 40 minutes.
mg was added, the pH was finally adjusted to 5.90, and emulsion A
I got it.

Compound [a] Br HOCH7CCH20H ■ Preparation process of coating solution for silver halide emulsion layer Emulsion A thus obtained was kept at 59°C, and calcium chloride 25
Optimal chemical sensitization was carried out by adding ammonium thiocyanate, chloroauric acid, and sodium thiosulfate.

then Stabilizer = 6-methyl-4 Hydroxy-1,3,3a.

7-tetrazaindene t, 7g 1 mol Ag
Sensitizing dye: Antifoggant: 1-phenyl-5 mercaptotetrazole 60 mg 7 mol Ag coating aid Sodium nitriisopropylnaphthalene sulfonate 1 g/mol Ik 8 Film property improver: Polyethyl acrylate latex 60 g 1 mol Ag diethylene glycol 20 g 1 mol Ag was added, and the remainder of the optical brightener emulsified dispersion prepared above was added at a concentration of 15 mg/m2 (however, No. 13 was not added), and styrene-maleic anhydride was added as a thickener. Copolymer, 1 of tetrakis(vinylsulfonylmethyl)methane and taurine potassium salt as a hardening agent
: 0.25mol reaction product per 1g of gelatin 30m
p)I was adjusted to 5.5 with citric acid to prepare a coating solution for a silver halide emulsion layer.

(Adjustment of coating solution for protective layer) Add a matting agent to the gelatin binder with an average particle size of 3.
5μm polymethyl methacrylate at 70mg/m2.
6 mg/l11 of 2-sulfonate succinic acid bis(2-ethylhexyl) ester sodium salt as a coating aid.
2. The following compound (b) as a fluorine-containing surfactant (14)
mg/m2, formalin as a hardening agent and 1 g of gelatin
Further, 1 mg/m2 of 1-phenyl-5-mercaptotetrazole was added as an antifoggant, and p)I was adjusted to 5.5 with citric acid to prepare a coating solution for a protective layer.

Compound (b) CH2-C00CII 2 + CF 2 ) a
HNa03S-CH-COOCH2+CF2)
All (coating) First, a thickness of 1101.mm with a hydrophilic colloid backing layer and a gelatin subbing layer. An antihalation layer was coated on polyethylene coated paper of TM.

(The amount of dye added is as shown in Table 1) The absorbance of this dye at the LED light source wavelength (660 nm) was measured, and the results are shown in FIG.

Next, a coating solution for a silver halide emulsion layer and a coating solution for a protective layer were coated in a multilayer manner on the antihalation layer.

In addition, immediately before application (within 10 seconds), 1-phenyl-3-pyrazolidone (0.7 g per 1 mole of silver) and the following compound (i
) was added to the coating solution for a silver halide emulsion layer.

Compound (i) If OCII 2S 03N a The amount of silver coated is 1.5 g/m2, the amount of gelatin coated is 0.5 g for the antihalation layer, and 0.9 g/+n2 for the emulsion layer.
．． The protective layer was 1.1 g/m2.

(Exposure) The thus prepared sample was exposed to light for 10 −6 seconds from an LED laser light source through an optical wedge.

(Processing) After the above exposure, development was performed using a developer having the composition shown below, followed by fixing, washing with water, and drying. Automatic developing machine GR-2 is used for development.
6 (manufactured by Konica Corp.) was used. (Development temperature is 38℃
, development time is 20 seconds).

(Developer formulation) Pure water (ion-exchanged water) Approx. 800ml Potassium sulfite 60g Ethylenediaminetetraacetic acid disodium salt 2g Potassium hydroxide 10.535-methylbenzotriazole 300ml Diethylene glycol 25g 1-phenyl-4,4-
Dimethyl 3-pyrazolidone 300mjZ1-
Phenyl-5-mercaptotetrazole 60mJl Potassium bromide 3.5g Hydroquinone 20g Potassium carbonate
15g pure water (ion exchange water)
Add to heat to 1000m℃. The pl of the developer was approximately 1078.

(Fixer formulation) (Composition A) Ammonium thiosulfate (72.5% W/V aqueous solution) 240
mu sodium sulfite 17g
Sodium acetate trihydrate 6.5g Boric acid 6g Sodium citrate dihydrate 2g Acetic acid (90% W/
W aqueous solution) 13.6 mu (composition) Pure water (ion-exchanged water) 17 m℃ Sulfuric acid (50% W/W aqueous solution) 4.73 Aluminum sulfate (An203 equivalent content is 8.1% W/W
Aqueous solution) When using 26.5 g of the fixer, the above compositions A1 were dissolved in the order of composition A1 in 500 mfL of water and used after finishing to iIt. The pH of this fixer was about 4.3.

Sakura Digital Densitometer PDA measures the reflection density of the sample after processing.
-65 model (manufactured by Konica Corp.) to evaluate photographic properties. The sensitivity was expressed as the reciprocal of the exposure amount required to obtain a blackening density of 1.0, and was expressed as a relative sensitivity, with the sensitivity of sample No. O being 100. Further, γ indicates the slope of the straight line portion of the characteristic curve.

In addition, the sharpness and self-sighting were visually evaluated on a 5-level sensory evaluation. A larger value indicates better results.

The results obtained are shown in Table-1.

As is clear from Table 1 and Figure 1, sample N of the present invention
It can be seen that samples No. o, 1 to No. 9 have excellent sharpness and good whiteness.

In addition, when comparing sample No. 2.4.7 in the present invention, the remaining color is almost the same, or sample No. 2.4.7 with high absorbance
It can be seen that the sharpness of the images of o and 2 is even better.

The same applies to sample No. 3.5.8.

On the other hand, sample No. 13, which does not contain a fluorescent whitening agent, has low white melon. In addition, regarding sample No. 14.15, in which the amount of sensitizing dye was increased by selecting a dye other than the present invention, sample No.
, 10, the sensitivity is higher but the sharpness is worse than before.
White melon deteriorates even more.

Example 2 The absorbance of samples No. 0 to No. 14 prepared in Example 1 was determined at the wavelength of a helium-neon light source (633 nm) (Fig. 2), and the same exposure was given using the beryllum-neon laser light source. Evaluation was conducted in the same manner. The results were the same as in Example 1.

[Effects of the Invention] According to the present invention, when a dye is added to the hydrophilic colloid layer and the sensitivity is reduced to 1/2, the absorbance of the dye alone at the wavelength where the emission spectrum of the exposure light source shows a maximum is 0.01 or more. By containing the dye, high sharpness can be obtained without deterioration of sensitivity, and the quality of white melon can be improved.

By further adding an optical brightener, a -layer whiteness can be obtained.

[Brief explanation of drawings]

FIG. 1 is a graph showing the relationship between sensitivity and absorbance when using an LED light source. FIG. 2 is a graph showing the relationship between sensitivity and absorbance when a helium-neon laser light source is used. Explanation of symbols The numbers (1), (2), etc. written in the graph indicate sample numbers.

Claims (1)

[Scope of Claims] 1) A silver halide photographic light-sensitive material having a photographic constituent layer including a silver halide emulsion layer on a paper support coated with a resin on both sides, the silver halide emulsion layer and the support. A hydrophilic colloid layer is provided between the
1. A silver halide photographic light-sensitive material comprising a dye having an absorbance of 0.01 or more at a wavelength at which the emission spectrum of an exposure light source shows a maximum. 2) A silver halide photographic light-sensitive material, characterized in that the photographic constituent layer according to claim 1 contains a fluorescent brightener.