JPH06148773A - Silver halide photographic sensitive material containing polymer latex - Google Patents

Abstract

PURPOSE:To provide the silver halide photographic sensitive material which is high in contrast, few in skipping of development, high in contrast and good in void letter when used for a printing photosensitive material and which is improved in a pinhole and pasted mark, etc. CONSTITUTION:The silver halide photographic sensitive material has at least one layer each of a photosensitive silver halide emulsion layer and a non photosensitive hydrophilic coloidal layer on a supporting body, and contains the polymer latex stabilized by gelatin in either layer and the polymer latex is the polymer containing the monomer unit expressed by the formula. In the formula, R is hydrogen, halogen atom or alkyl is a bivalent binding group, M is the atom or the atom group which is capable of cationization. (m) is 0 or 1.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a silver halide photographic light-sensitive material containing a polymer latex. The light-sensitive material of the present invention can be used as various light-sensitive materials including printing plate-making light-sensitive materials.

[0002]

2. Description of the Related Art In the plate-collecting and returning process in the field of printing plate making, the developed film photosensitive materials on which characters or halftone images are formed are respectively overlaid as originals, and one film (plate) is finished with the returning photosensitive material. Go. But,
A halftone dot original is exposed by directly contacting the emulsion surface of the return light-sensitive material, while a line drawing original is exposed through the paste base and the halftone dot original, so it is generally formed on the return light-sensitive material. The silver image will be out of focus,
The line width of the white part of the line drawing becomes narrow. This is said to be the wrong letter. As a means for improving this, there is a method of making the light-sensitive material have a higher contrast, and specific methods thereof include a method using lith-type development, a method of doping a silver halide grain with a rhodium salt, and a hydrazine compound. (For example, a hydrazine compound disclosed in JP-A-2-32330) or a tetrazolium compound (for example, JP-A-52-18317 and JP-A-53-1772).
No. 0 and No. 62-105134, tetrazolium compounds).

However, in these conventional methods, although the extracted characters are improved, the characteristics called pinholes and after sticking are deteriorated and sufficient performance cannot be obtained.

On the other hand, it is known that a light-sensitive material contains a latex polymer (Research Disclosure 19951, US Pat. Nos. 2,376,005 and 3,397,988, JP-A-3-49089).
No. 5, JP-A-59-121327, US Pat.
Nos. 852,382 and 2,956,884, etc.), but the effect of improving the blank characters and improving after pinholes and pasting have not been obtained. Furthermore, there is a phenomenon that the development runs, which is not preferable. Particularly, in the case of a light-sensitive material having a high contrast using a tetrazolium compound, a phenomenon in which development is remarkably developed occurs.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems of the prior art and to provide a silver halide photographic light-sensitive material which has a high contrast and a small development speed, and when applied to a light-sensitive material for printing. Another object of the present invention is to provide a silver halide photographic light-sensitive material which has high contrast, good characters to be drawn out, pinholes and after-imprinting are improved, and development runs less.

[0006]

The above object is to provide a silver halide photographic light-sensitive material having at least one light-sensitive silver halide emulsion layer and at least one light-insensitive hydrophilic colloid layer on a support, and at least one of the emulsion layers. A polymer containing a gelatin-stabilized polymer latex in at least one of the layer and / or the hydrophilic colloid layer, and the polymer latex contains a monomer unit represented by the general formula [I]. And a polymer latex-containing silver halide photographic light-sensitive material.

[0007]

[Chemical 2]

In the above general formula [I], R represents a hydrogen atom, a halogen atom (Br, Cl, etc.) or a lower alkyl group (eg, methyl group, ethyl group, butyl group, etc.), and A is a divalent linking group. (Preferably, for example, phenylene group, alkylene group, alkylenecarbamoyl group, carbonylalkylene group, etc.), M represents an atom or a group of atoms capable of cationization, and m is 0 or 1.

The polymer latex used in the present invention contains 0.01 to 2 monomer units represented by the above general formula [I].
The polymer is preferably contained in an amount of 0 mol%, and is 1 to 2.
A polymer containing 0 mol% is more preferable. Two
When it is 0 mol% or less, it is preferable in terms of stability of synthesis and is preferable.

The amount of polymer latex added to the light-sensitive material is preferably 0.05 to 5 g / m ^{2 on} one side,
0.1 to 2.5 g / m ² is more preferable.

Preferred examples of the monomer unit represented by the general formula [I] are shown below. However, as a matter of course, the present invention is not limited to the following examples.

[0012]

[Chemical 3]

In the present invention, the gelatin-stabilized polymer latex is obtained by carrying out at least part of the polymerization reaction of the polymer in a solvent containing at least gelatin. US Pat. No. 5,026,632 discloses a technique for improving pressure resistance by adding particles having a hard shell of gelatin hardened with a cross-linking agent to polymer particles having a Tg of 25 ° C. or less prepolymerized in a layer. It is disclosed. Also, US Pat.
Japanese Patent No. 4855219 discloses a technique of improving adhesiveness by using a polymer particle obtained by copolymerizing and binding prepolymerized polymer particles as a matting agent. However, in such particles, it was not possible to recognize the effects of the object of the present invention such as blank characters, pinholes, improvement after sticking, and improvement of development running.

US Pat. No. 2,852,382 describes the synthesis of a polymer in the presence of gelatin, but it is intended to be contained in a silver halide emulsion layer of a color photographic light-sensitive material, and the effects of the present invention can be obtained. I can't.

US Pat. No. 2,787,545 discloses a method of desalinating a silver halide emulsion using a graft polymer of gelatin and acrylic acid. Even if such an emulsion is used, the present invention can be used. The same effect cannot be obtained.

Further, JP-A-59-121327 and JP-A-62-62.
No. 115152 or the like describes an example in which latex is added to a non-photosensitive upper layer (protective layer), but the effect of the latex-containing photosensitive material of the present invention cannot be obtained.

In the above-mentioned polymerization reaction for obtaining the polymer latex, there is a preferable range in the ratio of the addition amount of gelatin and latex at the time of synthesis. Gelatin Gel and Polymer Pol at the time of synthesis (finally obtained as latex)
The weight ratio of y is Gel / Poly = 1/100 to 2/1.
Is preferable, and particularly preferably 1/50 to 1/2.

In this case, the effect of the present invention gives particularly preferable results when the added amount of the polymer component of the latex is 20% or more based on the gelatin in the layer to which the latex is added.

The polymer latex used in the present invention can change the MFT (minimum film forming temperature) depending on the composition of the monomer, but it is particularly effective when the MFT is 60 ° C. or lower, and more preferably the MFT is 50. It is below ℃.

Further, according to the present invention, the particle size of latex is 0.3 μm.
It is preferably m or less. A particularly preferred particle size is 0.
It is 01 to 0.20 μm.

The constitution of the monomer of the polymer latex contained in the photographic light-sensitive material of the present invention is represented by the general formula [I]
The monomer unit represented by the formula (1) is indispensable, and preferably contains 1 mol% to 20 mol% of the monomer unit. In addition, for example, U.S. Pat. Nos. 2,772,166 and 3,3.
25,286, 3,411,911, 3,31
No. 1,912, No. 3,525,620, Research Disclosure
ure) magazine No. 195 19551 (1980 7
Acrylic acid esters, methacrylic acid esters, hydrates of vinyl polymers such as styrene, etc., which are described in, for example, Mon.) can be used as the monomer component.

Examples of gelatin used for stabilizing the latex include gelatin and gelatin derivatives, cellulose derivatives, and graft polymers of gelatin and other polymers. Other proteins, sugar derivatives, cellulose derivatives, single or A hydrophilic colloid such as a synthetic hydrophilic polymer substance such as a copolymer can also be used in combination.

As gelatin, lime-processed gelatin, acid-processed gelatin, buretin of society
Of Japan (Bull. Soc. Sci. Pho
t. The acid-processed gelatin as described in Japan No. 16, page 30 (1966) may be used, and a hydrolyzate or enzymatic hydrolyzate of gelatin may also be used.
Examples of the gelatin derivative include various compounds such as acid halides, acid anhydrides, isocyanates, bromoacetic acid, alkane sultones, vinyl sulfonamides, maleinimide compounds, polyalkyleonoxides, and epoxy compounds in gelatin. What is obtained by reacting with can be used. Specific examples thereof are US Pat. No. 2,614,92.
No. 8, No. 3,132,945, No. 3,186,846
No. 3,312,553, British Patent 861,414
Issue 1,033,189, Issue 1,005,784
And Japanese Examined Patent Publication No. 2626845.

Examples of proteins include albumin, casein,
As the cellulose derivative, hydroxyethyl cellulose, carboxymethyl cellulose, a sulfuric acid ester of cellulose, or as the sugar derivative, sodium alginate or a starch derivative may be used in combination with gelatin.

As the graft polymer of gelatin and other polymers, gelatin is a homopolymer of acrylic acid, methacrylic acid, derivatives thereof such as esters and amides, and vinyl monomers such as acrylonitrile and styrene. The thing which grafted the copolymer can be used. In particular, a graft polymer with a polymer having a certain degree of compatibility with gelatin, for example, a copolymer such as acrylic acid, acrylamide, methacrylamide, or hydroxyalkyl methacrylate is preferable. Examples of these are US Pat. Nos. 2,763,625 and 2,831,
767, 2,956,884 and the like.

The latex used in the present invention is contained in at least one light-sensitive silver halide emulsion layer and / or at least one non-light-sensitive hydrophilic colloid layer.
It may be added in any other layer. It may be contained on only one side of the support, or may be contained on both sides. The latex of the invention is added and /
A conventionally known latex may be added to the layer that does not or does not. When included on both sides of the support, the type and / or amount of polymer latex included on each side may be the same or different.

It is particularly preferred that the latex of the present invention is added to at least one non-photosensitive hydrophilic colloid layer, which is outside the at least one silver halide emulsion layer with respect to the support.

Examples of the monomer component of the latex contained in the photographic light-sensitive material of the present invention include those represented by the general formula [I] and, for example, US Pat. No. 2,772,166.
Issue 3, Issue 3,325,286, Issue 3,411,911
No. 3,311,912, No. 3,525,620
Issue, Research Disclosure
Disclosure) No. 19519551 (1
Acrylic acid ester, methacrylic acid ester, hydrates of vinyl polymers such as styrene as described in (July 980) and the like may be contained. Specifically, acrylic acid, methacrylic acid or salt, maleic acid or salt,
Fumaric acid or salt, alkyl acrylate such as methyl acrylate and ethyl acrylate, metaalkyl acrylate such as methyl methacrylate and ethyl methacrylate, styrene, styrenesulfonic acid or salt, N-substituted or unsubstituted acrylamide, vinyl alcohol , Hydroxyalkyl methacrylates,
Any compound having a double bond such as butadiene can be selected as a copolymerization component as a monomer.

Specific examples of preferable monomers which can be used together with the monomer represented by the general formula [I] are shown below. The latex of the present invention can take any combination (type, composition ratio) of these monomers. Needless to say, the present invention is not limited to these monomers.

[0030]

[Chemical 4]

[0031]

[Chemical 5]

[0032]

[Chemical 6]

[0033]

[Chemical 7]

[0034]

[Chemical 8]

In the silver halide photographic light-sensitive material of the present invention, the total amount of the hydrophilic binder on the side having the light-sensitive silver halide emulsion layer with respect to the support is 2.7 g / m ² or less. preferable. The case where the total amount of the hydrophilic binders on the side having the photosensitive silver halide emulsion layer with respect to the support is 2.5 g / m ² or less is particularly preferable.

There are no particular restrictions on other general additives and known contrast-increasing agents, as well as the method for producing silver halide grains and the method for sensitizing, which constitute the light-sensitive material of the present invention. Kaihei 1-230035, Japanese Patent Application 1-2
These can be selected by referring to the description of No. 66640 and the like.

In the present invention, one or more antistatic layers may be provided on the support, for example, on the backing side and / or the emulsion layer side, for the purpose of antistatic property which is another physical property as a light-sensitive material. .

In this case, the surface resistance of the side provided with the antistatic layer is preferably 1.0 × 10 ¹² Ω or less at 25 ° C. and 50%, and particularly preferably 8 × 10 ¹¹ Ω or less.

The antistatic layer is preferably an antistatic layer containing a reaction product of a water-soluble conductive polymer, hydrophobic polymer particles and a curing agent, or an antistatic layer containing a metal oxide.

Examples of the water-soluble conductive polymer include polymers having at least one conductive group selected from a sulfonic acid group, a sulfuric acid ester group, a quaternary ammonium salt, a tertiary ammonium salt, and a carboxyl group polyethylene oxide group. Can be mentioned. Of these groups, a sulfonic acid group, a sulfuric acid ester group and a quaternary ammonium salt group are preferred. The amount of the conductive group is preferably 5% by weight or more per molecule of the water-soluble conductive polymer.

When a water-soluble conductive polymer containing a carboxyl group, a hydroxy group, an amino group, an epoxy group, an aziridine group, an active methylene group, a sulfinic acid group, an aldehyde group, a vinyl sulfone group or the like is used. Of these, those containing a carboxyl group, a hydroxy group, an amino group, an epoxy group, an aziridine group, and an aldehyde group are preferable. It is preferable that these groups are contained in an amount of 5% by weight or more per polymer molecule. The number average molecular weight of the water-soluble conductive polymer is preferably 300.
0 to 100,000, and more preferably 3500 to
It is 50,000.

As the above-mentioned metal oxide, tin oxide, indium oxide, vanadium oxide, antimony oxide, zinc oxide, or those obtained by doping these metal oxides with metal phosphorus, metal silver, or metal indium is preferable. Used. The average particle size of these metal oxides is 1μ
˜0.01 μ is preferable.

As the undercoat layer which can be used in the present invention, an undercoat layer in an organic solvent system containing polyhydroxybenzenes described in JP-A-49-3972, JP-A-4.
9-11118, 52-104913, 59-
No. 19941, No. 59-19940, No. 59-189.
No. 45, No. 51-112326, No. 51-11761
No. 7, No. 51-58469, No. 51-114120
No. 51-121323, No. 51-123139.
No. 51-114121, No. 52-139320
No. 52-65422, No. 52-109923,
No. 52-119919, No. 55-65949, No. 5
Examples of the aqueous latex undercoating layer described in JP-A Nos. 7-128332 and 59-19941 include U.S. Pat. Nos. 2,698,235 and 2,779,684.
Examples thereof include vinylidene chloride-based undercoating described in Nos. 425,421 and 4,645,731.

The surface of the undercoat layer can be chemically or physically treated. Examples of the treatment include chemical treatment, mechanical treatment, corona discharge treatment, flame treatment, ultraviolet treatment, high frequency treatment, glow discharge treatment, active plasma treatment, laser treatment, mixed acid treatment, and surface activation treatment such as ozone oxidation treatment. .

There is no limitation on the coating timing and conditions of the undercoat layer and other coating layers.

In the present invention, a usual water-soluble dye may be used, and a solid-dispersed dye may be contained in any hydrophilic colloid layer. The layer may be the outermost layer on the emulsion surface side, or may be added below the emulsion layer and / or on the backing surface side for the purpose of preventing halation. Also, an appropriate amount may be added to the emulsion layer for adjusting the irradiation. Of course, plural kinds of solid disperse dyes may be contained in plural layers.

The addition amount of the solid disperse dye is preferably 5mg / m ² ~1g / m ² per kind, particularly preferably ^{10mg / m 2 ~800mg / m 2} .

The fine particles of the solid dispersion used are obtained by pulverizing the dye with a dispersing machine such as a ball mill or a sand mill, and then water or a hydrophilic colloid such as gelatin, sodium dodecylbenzenesulfonate, sodium fluorinated octylbenzenesulfonate. , Saponin, nonylphenoxy polyethylene glycol and the like can be dispersed and obtained.

Examples of the general formula of the solid disperse dye include those described in US Pat. No. 4,857,446 and the like. For example, those represented by the general formulas [I] to [V] in the same specification. Is preferably used.

The present invention can be applied to various photosensitive materials for printing, X-ray, general negative, general reversal, general positive and direct positive. In particular, when it is applied to a photosensitive material for printing which requires extremely high dimensional stability, a remarkable effect can be obtained.

In processing the silver halide photographic light-sensitive material of the present invention, the development temperature is preferably 50 ° C. or lower, and particularly 2
The temperature is preferably about 5 ° C. to 40 ° C., and the development processing time is generally completed within 2 minutes, but it is particularly preferable to perform rapid processing for 5 to 60 seconds.

[0052]

EXAMPLES Examples of the present invention will be specifically described below. However, it goes without saying that the present invention is not limited to this embodiment.

Example 1 (Latex Synthetic Method) To 40 liters of water, gelatin was added in an amount of 0.
To a liquid added with 4 kg and ammonium persulfate 0.05 kg, while stirring at a liquid temperature of 80 ° C., under a nitrogen atmosphere, a mixed liquid of monomer components as shown in (1) to (6) described below was taken for 1 hour. Then, after stirring for 2 hours, 0.3 kg of gelatin was added and stirred for 1.5 hours.
After removing the residual monomer by steam distillation for an hour, the mixture was cooled to room temperature, and the pH was adjusted to 6.0 with ammonia. The obtained latex liquid was adjusted to 50.5 kg with water. The solid content was 15 wt%.

(Emulsion preparation) 8 × rhodium chloride complex was added to a silver sulfate solution and an aqueous solution of sodium chloride and potassium bromide.
The solution added so as to have a concentration of 10 ⁻⁵ mol / Ag mol was simultaneously added to the gelatin solution while controlling the flow rate, and after desalting, a cubic crystal containing 0.13 μ in particle size and 1 mol% of silver bromide was added. dispersion,
A silver chlorobromide emulsion was obtained.

This emulsion was sulfur-sensitized in the usual way to give 6-methyl-4-hydroxy-1,3,3 as a stabilizer.
After adding a, 7 tetrazaindene, the following additives were added to prepare an emulsion coating solution, and then emulsion protective layer coating solution P-
0, backing layer coating liquid B-0 and backing protective layer coating liquid BP-0 were prepared with the following compositions.

(Preparation of Emulsion Coating Solution) Compound (a) 1 mg / m ² NaOH (0.5 N) Adjusted to pH 5.6 Compound (b) 40 mg / m ² Compound (c) 30 mg / m ² Saponin (20%) 0.5 cc / m ² sodium dodecylbenzenesulfonate 20 mg / m ² 5-methylbenzotriazole 10 mg / m ² compound (d) 2 mg / m ² compound (e) 10 mg / m ² compound (f) 6 mg / m ² styrene- Maleic acid copolymer polymer (thickener) 90 mg / m ² Latex shown in Table 1 Amount shown in Table 1

[0057]

[Chemical 9]

(Emulsion protective layer coating liquid P-0) Gelatin 0.5 g / m ² compound (g) (1 wt% aqueous solution) 25 cc / m ² compound (h) 120 mg / m ² spherical monodisperse silica (8 μm) 20 mg / m ² Spherical monodisperse silica (3 μm) 10 mg / m ² compound (i) 100 mg / m ² compound (j) 5 mg / m ² Latex shown in Table-1 Amount shown in Table-1 Citric acid Amount adjusted to pH 6.0

(Backing Layer Coating Solution B-0) Gelatin 1.0 g / m ² compound (k) 100 mg / m ² compound (l) 18 mg / m ² compound (m) 100 mg / m ² saponin (20 wt% aqueous solution) 0 0.6 cc / m ² latex (n) 300 mg / m ² 5-nitroindazole 20 mg / m ² styrene-maleic acid copolymer polymer (thickener) 45 mg / m ² glyoxal 4 mg / m ² compound (p) 100 mg / m ²

(Backing Protective Layer Coating Solution BP-0) Gelatin 0.5 g / m ² Compound (g) (1 wt% aqueous solution) ² cc / m ² Spherical polymethylmethacrylate (4 μ) 25 mg / m ² Sodium chloride 70 mg / m ² Glyoxal 22 mg / m ² Compound (o) 10 mg / m ²

[0061]

[Chemical 10]

[0062]

[Chemical 11]

[0063]

[Chemical 12]

On the side of the emulsion surface of the polyethylene terephthalate base having a thickness of 100 .mu.m which is undercoated as shown in JP-A-59-19941, there is 10 W /
After the corona discharge was applied at (m ² · min), the following composition was applied using a roll-fit coating van and an air knife. Drying was performed at 90 ° C under a parallel flow drying condition with a general heat transfer coefficient of 25 Kcal (m ² · hr · ° C).
It was carried out for 0 minutes, and subsequently at 140 ° C. for 90 seconds. The thickness of this layer after drying was 1 μm, and the surface resistivity of this layer was 23 ° C. 5
It was 1 × 10 ⁸ Ω at 5%.

[0065]

[Chemical 13]

Ammonium sulfate 0.5 g / liter Polyethylene oxide compound (average molecular weight 600) 6 g / liter Curing agent 12 g / liter

[0067]

[Chemical 14]

On this base, first, from the side closer to the support as the emulsion surface side, the emulsion layer and the emulsion protection layer were sequentially placed at 35 ° C. by a slide hopper method using a formalin solution as a hardening agent solution formalin solution 30 mg / g gelatin formalin 30 mg. After applying the multi-layer coating at the same time, and passing through the cold air set zone (5 ° C), the backing layer and the backing protective layer are also applied while adding the hardener with the slide hopper, and the cold air set (5 ° C). )did. The coating liquid showed sufficient setting properties when passing through each set zone. Subsequently, both sides were simultaneously dried in the drying zone under the following drying conditions. In addition, after coating the backing surface side, the film was conveyed until it was wound up in a roller, without any contact with other parts. At this time, the coating speed was 100 m / min.

(Drying conditions) After setting, the product was dried with a dry air at 30 ° C. until the weight ratio of H ₂ O / gelatin reached 800%,
Dry 800 to 200% with 35 ° C (30%) dry air, apply the air as it is, and after 30 seconds from the time when the surface temperature reaches 34 ° C (assuming drying is completed), 48 ° C 2% air for 1 minute Dried. At this time, the drying time is H
₂ O / gelatin ratio up to 800% for 50 seconds, 800% to 2
It takes 35 seconds from 00% to 5 seconds from 200% to the end of drying.

This light-sensitive material was wound up at 23 ° C. 40%, then cut under the same environment, and conditioned at 40 ° C. 10% for 8 hours in a barrier bag which had been conditioned for 3 hours under the same environment.
It was sealed with cardboard which had been conditioned to 2% for 2 hours.

In the light-sensitive material produced as described above, the coated silver amount was 4.0 g / m ² and the gelatin amount was 2.0 g / m ² in the emulsion layer.

The raw materials of the latex in Table 1 are as follows. (Unit is kg) (1) Comparative latex (a) n-butyl acrylate 3.0 (b) Styrene 3.8 (c) Acrylic acid 0.1 (2) Latex according to the present invention (a) Ethyl acrylate 6 .3 (a) Monomer that gives 1-2 0.6 (3) Latex according to the present invention (a) Ethyl acrylate 3.0 (ii) Methyl methacrylate 3.1 (c) Monomer that gives 1-1 0.8 (4) Latex according to the present invention (a) Ethyl acrylate 2.0 (a) Methyl methacrylate 3.0 (c) Monomer that gives 1-2 0.4 (d) Styrene 1.5 (5) According to the present invention Latex (4) with (C) changed to a monomer that gives 1-5. (6) Latex according to the present invention (4) in which (C) is replaced with a monomer giving 1-6.

The evaluation was performed as follows. A bright room printer P-627FM (manufactured by Dainippon Screen Co., Ltd.) was used to expose through a document containing fine line patterns and pictures, and processed under the following conditions.

(Standard processing conditions) Development 28 ° C. for 10 seconds Development replenishment amount 130 cc / m ² fixing 28 ° C. 7 seconds Fixing replenishment amount 200 cc / m ² Washing at room temperature 6 seconds Drying 40 ° C. 6 seconds

<Developer Formulation> (Composition A) Pure water (ion exchanged water) 150 ml Ethylenediaminetetraacetic acid disodium salt 2 g Diethylene glycol 50 g Potassium sulfite (55% W / V aqueous solution) 100 ml Potassium carbonate 50 g Hydroquinone 15 g 5-Methyl Benzotriazole 200 mg 1-Phenyl-5-mercaptotetrazole 30 mg Potassium hydroxide Amount to bring the pH of the working solution to 10.9 Potassium bromide 4.5 g

(Composition B) Pure water (ion exchanged water) 3 ml Diethylene glycol 50 mg Ethylenediaminetetraacetic acid disodium salt 25 mg Acetic acid (90% aqueous solution) 0.3 ml 5-Nitroindazole 110 mg 1-Phenyl-3-pyrazolidone 500 mg Developer At the time of use, the composition A and the composition B were dissolved in this order in 500 ml of water to make 1 liter.

<Fixer Formulation> (Composition A) Ammonium thiosulfate (72.5% W / V aqueous solution) 230 ml Sodium sulfite 9.5 g Sodium acetate trihydrate 15.9 g Boric acid 6.7 g Sodium citrate dihydrate Salt 2 g Acetic acid (90% W / V aqueous solution) 8.1 ml

(Composition B) Pure water (ion-exchanged water) 17 ml Sulfuric acid (50% W / V aqueous solution) Amount to make pH 5.5 Aluminum sulfate (Aqueous solution having an Al ₂ O ₃ conversion content of 8.1% W / V) 26.5 g When the fixing solution was used, the above composition A and composition B were dissolved in this order in 500 ml of water to make 1 liter. The pH of this fixer was about 5.5.

The processed light-sensitive material was evaluated as follows. Evaluation of extracted character image quality The extracted character image quality 5 is the image quality that reproduces a character of 30 μm width when proper exposure is performed so that 50% of the dot area will be 50% of the halftone dot area on the return photosensitive material. . this is,
It is a very good character quality without blank characters. The image quality capable of reproducing only a character having a width of 150 μm or more when the same appropriate exposure is given is set as the extracted character image quality 1. This is a poor character quality. In this evaluation, 3 or more is a practical level. Pinhole The number of minute spots that appear white when proper back exposure is performed is visually evaluated on a scale of five. The number of pinholes was so large that they could not be put to practical use, and the best level was 5. Relative sensitivity and γ at a density of 1.0 and a density of 3.0 were measured, and the higher the sensitivity and the lower the γ, the higher the running. The evaluation results are shown in Table 2.

[0080]

[Table 1]

[0081]

[Table 2]

As can be seen from Table 2, the sample according to the present invention containing the latex according to the present invention in at least one of the emulsion layer and / or the non-photosensitive hydrophilic colloid layer was in a high tone and developed. Therefore, when applied to a photosensitive material for printing as in this example, it is a hard-printed photosensitive material with good contrast, improved pinholes and after-imprinting, and less development development. I was able to.

[0083]

The silver halide photographic light-sensitive material of the present invention comprises
Even when applied to a photosensitive material for printing, which has a high contrast and a low development speed, it is possible to obtain a photosensitive material having a high contrast and good characters to be drawn, improved pinholes and after-adhesion, and a low development speed.

Claims (1)

[Claims] 1. A silver halide photographic light-sensitive material having at least one light-sensitive silver halide emulsion layer and at least one light-insensitive hydrophilic colloid layer on a support, and at least any one of the emulsion layers and / or At least one of the hydrophilic colloid layers contains a gelatin-stabilized polymer latex, and the polymer latex is a polymer containing a monomer unit represented by the general formula [I]. A silver halide photographic light-sensitive material containing a polymer latex. [Chemical 1] In general formula [I], R represents a hydrogen atom, a halogen atom, or a lower alkyl group. A represents a divalent linking group. M represents an atom or a group of atoms that can be cationized. m is 0 or 1.