JPH08137041A - Silver halide photographic material - Google Patents

Abstract

PURPOSE: To provide a silver halide photographic material by which the photographic material does not meander even by high speed carrying processing and which has high sensitivity and by which persistent colors are not degraded. CONSTITUTION: In a photographic material having a silver halide emulsion layer of a single layer on one side of a support body having a thickness not more than 130μm, a surface having a silver halide emulsion of the photographic material is exposed by the monochromatic light on which a peak wave length is 545nm and a half value width is 15±5nm, and is set in an exposure value necessary to become a value by adding 0.5 to the minimum concentration of an image obtained by performing development processing at developer temperature 35 deg.C for development time 15 seconds, and at least 50% or more of the whole projected area of silver halide particles contained in the emulsion layer are plate-like particles having the aspect ratio not less than 2, and a single kind of polymer latex on which solubility to water at 25 deg.C is not more than 0.025wt.% is contained in the emulsion layer and/or a layer except it.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silver halide photographic light-sensitive material, and more particularly to a roll-shaped medical (for X-ray) silver halide photographic light-sensitive material having a rapid processing property.

[0002]

2. Description of the Related Art In recent years, in the field of silver halide photographic light-sensitive materials for X-rays (hereinafter, also simply referred to as light-sensitive materials), rapid processing has been rapidly advanced, but with this, various problems occur. . For example, there are many obstacles such as a problem in photographic characteristics of a light-sensitive material or a mechanical incidental problem such as transportability.

In order to accelerate development processing, high-speed rapid processing is carried out by an automatic developing machine, and processing is carried out in a short time. Therefore, a photosensitive material which is excellent in developability and can be dried in a short time after washing with water is required. Further, it is indispensable to improve the covering power (CP) in the technology for increasing the sensitivity of X-ray photosensitive materials.
It is known to use tabular grains having a high CP from the side of the silver halide grain. However, when tabular grains having a high CP are used, physical properties are deteriorated such that scratches on the film are apt to occur. The gelatin / gelatin ratio must be lowered. However, if the amount of gelatin is increased to lower the silver halide / gelatin ratio, high sensitivity is required for single-sided light-sensitive materials such as films used in indirect X-ray photography systems that photograph light-sensitive materials through a mirror camera method. For materials, the development processing time is Dry to D
The water absorption amount in the automatic processor processing in the rapid processing such as ry within 60 seconds becomes large, and there are drawbacks such as deterioration of drying property and deterioration of residual color property. The processing time of the film was only 90 seconds or more.

On the other hand, the indirect X-ray light-sensitive material is a long roll film having a film size of 30 to 46 m, which is different from other X-ray light-sensitive materials. In short, there was a strong demand from the market for rapid processing. Against this background, when the indirect X-ray photosensitive material processing is performed by a high-speed roller automatic developing machine (Dry to Dry for 60 seconds or less), the photosensitive material slips due to the slip of the photosensitive material.

[0005]

In contrast to the above problems, an object of the present invention is to provide a photosensitive material even when a roll-shaped long photosensitive material such as an indirect X-ray photographing photosensitive material is processed at high speed. It is an object of the present invention to provide a silver halide photographic light-sensitive material which is free from meandering, has high sensitivity, does not deteriorate physical properties of a film, has no residual color deterioration, and is suitable for rapid processing.

[0006]

The above-mentioned object of the present invention is to provide a silver halide photographic light-sensitive material having one silver halide emulsion layer on one side of a support having a thickness of 130 μm or less,
The surface of the light-sensitive material having the silver halide emulsion has a peak wavelength.
Add 0.5 to the minimum density of the image obtained by exposure with monochromatic light having a half width of 15 ± 5 nm at 545 nm and using the developer having the following composition at a developer temperature of 35 ° C. and a developing time of 15 seconds. The exposure required to reach this value is 0.004 lux seconds to 0.010
Lux seconds, at least 50% or more of the total projected area of silver halide grains contained in the silver halide emulsion layer are tabular grains having an aspect ratio of 2 or more, and the silver halide emulsion layer and / or Achieved by a silver halide photographic light-sensitive material characterized in that the other layers contain one polymer latex containing at least one monomer having a solubility in water at 25 ° C. of not more than 0.025% by weight as a monomer unit. To be done.

Developer composition: potassium hydroxide 22 g potassium sulfite 63 g boric acid 10 g hydroquinone 26 g triethylene glycol 16 g 5-methylbenzotriazole 0.06 g 1-phenyl-3-mercaptotetrazole 0.01 g glacial acetic acid 12 g 1-phenyl-3-pyrazolidone 1.2 g Glutaraldehyde 5g Potassium bromide 4g After adding water to make 1 liter, the pH is adjusted to 10.0.

The photosensitive material preferably has a time from the start of processing to the end of processing (Dry to Dry processing time) within 60 seconds in the development processing step.

The present invention will be specifically described below.

The support used in the present invention is one known as a support for a photosensitive material, for example, a polyethylene film such as polyethylene terephthalate or a transparent material such as triacetyl cellulose film, which is blue. It is preferably colored with a dye. As the blue dye, various ones such as anthraquinone dye known as a coloring dye for X-ray photosensitive materials can be used. The thickness is 130 μm or less, preferably 80 to 130 μm. An undercoat layer made of a water-soluble polymer substance such as gelatin is provided on the support as in the case of a usual X-ray photosensitive material.

The light-sensitive material of the present invention is coated with a silver halide emulsion on only one side, and a dye layer for preventing halation may be provided on the side opposite to the emulsion side.

The method for measuring the sensitivity of a light-sensitive material is as follows:
Although monochromatic light of ± 5 nm is used, a tungsten light source (color temperature 2856 ° K) as an exposure light source and a filter having the filter characteristics shown in FIG. 1 are combined to form a light source. The exposure amount was obtained using a 1M-3 type illuminometer (Topcon). Further, the sensitivity is represented by exposure illuminance (lux) when the exposure time is 1/20 seconds. Therefore, the smaller the value (look), the higher the sensitivity. For the development processing, a developer having the following composition was used.
The minimum density is 0.5 in seconds according to the standard processing method shown below.
The amount of exposure required to obtain the value obtained by adding is measured.

Developer composition: potassium hydroxide 22 g potassium sulfite 63 g boric acid 10 g hydroquinone 26 g triethylene glycol 16 g 5-methylbenzotriazole 0.06 g 1-phenyl-3-mercaptotetrazole 0.01 g glacial acetic acid 12 g 1-phenyl-3-pyrazolidone 1.2 g Glutaraldehyde 5g Potassium bromide 4g After adding water to make 1 liter, the pH is adjusted to 10.0.

Fixer composition Ammonium thiosulfate (70% wt / V) 200 ml Sodium sulfite 20 g Boric acid 8 g EDTA2Na (dihydrate) 0.1 g Aluminum sulfate 15 g Sulfuric acid 2 g Glacial acetic acid 22 g After adding water to make 1 liter, water as necessary The pH is adjusted to 4.2 with sodium oxide or glacial acetic acid.

Processing conditions: development 35 ° C. for 15 seconds, fixing 33 ° C. for 8 seconds, water washing 20 ° C. 8
Sec., Squeeze and dry 45 ° C. 14 sec Developing device: commercially available roller-conveying type automatic developing device For example, SRX-501 (manufactured by Konica Corporation) Silver halide emulsion used in the silver halide photographic light-sensitive material for X-ray of the present invention Describe. The silver halide emulsion in the present invention has a projected area of, for example, silver halide grains.
50% or more has an average aspect ratio of 2.0 or more. The average aspect ratio is 2.0 or more, 20 or less, the equivalent circle diameter of the particles is 0.2 ~ 30 (mu) m, more preferably
0.4 to 10 μm. Further, the thickness of the particles is preferably 0.5 μm or less, more preferably 0.3 μm or less.

[0016] The tabular grains are said to improve spectral sensitization efficiency and image graininess and sharpness. For example, British Patent No. 2,112,157, US Patent Nos. 4,414,310 and 4,43.
No. 4,226 is disclosed, and the emulsion can be easily prepared by the methods described in these publications.

The silver halide composition of the silver halide emulsion which can be used in the present invention may be any silver halide composition such as silver bromide, silver iodobromide, silver chloroiodobromide, and the like. 2.5 mol% as a preferable silver halide composition
The silver iodobromide emulsion contains the following silver iodide.

The silver halide grains may be of any crystal type as long as they have the constitution of the present invention, for example, cubic, 8
It may be a single crystal such as a tetrahedron or a tetrahedron, or may be a multi-twin crystal grain having various shapes.

The emulsion used in the silver halide photographic light-sensitive material of the present invention can be produced by a known method. For example, Research Disclosure (RD) No.17643 (December 1978)
・ Pages 22-23, 1 ・ Emulsion preparation a
nd Types ”emulsion or the same (RD) No.18716 (1)
(November, 979) ・ It can be prepared by referring to the method described on page 648.

The emulsion used in the silver halide photographic light-sensitive material of the present invention is, for example, "The Theory of the" by TH James.
Photographic Process ”4th edition published by Macmillan (1977
38) to 104), GF Daufin, "Photographic Emulsion Chemistry" Focal Pre.
Published by ss (1966), P. Glafkides "Physics and Chemistry of Photography"
"Chimie et Physique Photographique" published by Paul Montel (1967), VL Zelikman et al. "Making and Coating Photographic Emulsion" Fo
It can be prepared by the method described in Cal Press (1964) and the like.

That is, the solution method such as the acidic method, the ammonia method, the neutral method, etc., the forward mixing method, the reverse mixing method, the double jet method, the controlled double jet method, etc., the conversion method, the core / shell method. And the like, and a combination method thereof.

A preferred embodiment of the emulsion used in the silver halide photographic light-sensitive material of the present invention is a monodisperse emulsion in which silver iodide is localized inside the grains. The monodisperse emulsion referred to herein is a halogenated compound in which, when the average grain diameter is measured by a conventional method, at least 95% of grains by number or weight are within ± 40% of the average grain size, preferably within ± 30%. It is a silver particle.

The grain size distribution of silver halide may be either a monodisperse emulsion having a narrow distribution or a polydisperse emulsion having a wide distribution. The crystal structure of silver halide may have different silver halide compositions inside and outside. For example, a core portion of high silver iodide is coated with a shell layer of low silver iodide to have a clear two-layer structure. The core / shell type monodisperse emulsion may be used.

A method for producing the above core / shell type emulsion is well known, for example, J. Phot. Sci. 24, 198, (1976), US Pat.
92,250, 3,505,068, 4,210,450, 4,444,87
The method described in JP-A No. 7 or JP-A-60-143331 can be referred to.

The above-mentioned emulsion may be either a surface latent image type which forms a latent image on the grain surface, an internal latent image type which forms a latent image inside the grain, or a type which forms a latent image on both the surface and the inside. It may be an emulsion.

These emulsions are used at the stage of physical ripening or grain preparation, for example, cadmium salt, lead salt, zinc salt, thallium salt, iridium salt or its complex salt, rhodium salt or its complex salt, iron salt or its complex salt, etc. May be.

In order to remove soluble salts (desalting treatment step), the emulsion may be subjected to a water washing method such as Nudell water washing method or flocculation sedimentation method. As a preferred washing method, for example, a method using an aromatic hydrocarbon aldehyde resin containing a sulfo group described in JP-B-35-16086, or JP
A particularly preferable desalting method is a method using an aggregating polymer agent described in 2-7037, such as G-3 and G-8.

The emulsion used in the silver halide photographic light-sensitive material of the present invention can use various photographic additives in the steps before and after physical ripening or chemical ripening. Examples of the compound that can be used in such a step include Research Disclosure (RD) 17643, (RD) 18716 (November 1979) and
Various compounds described in (RD) 308119 (December 1989) can be mentioned. The types and locations of the compounds described in these three (RD) are listed below.

Additive RD-17643 RD-18716 RD-308119 Page Classification Page Classification Page Classification Chemical sensitizer 23 III 648 Upper right 996 III Sensitizing dye 23 IV 648-649 996-8 IVA Desensitizing dye 23 IV 998 IVB Dye 25-26 VIII 649-650 1003 VIII Development accelerator 29 XXI 648 Upper right fog inhibitor / stabilizer 24 IV 649 Upper right 1006-7 VI Whitening agent 24 V 998 V Surfactant 26-7 XI 650 Right 1005-6 XI Antistatic agent 27 XII 650 right 1006 to 7 XIII plasticizer 27 XII 650 right 1006 XII slip agent 27 XII matting agent 28 XVI 650 right 1008 to 9 XVI binder 26 XXII 1009 to 4 XXII Next, the polymer latex according to the present invention will be described. .

The monomer forming the polymer latex of the present invention is preferably an acrylic acid ester compound, particularly preferably when both an acrylic acid ester compound and a methacrylic acid ester compound are used.
The particle size of the polymer latex of the present invention is preferably 300 nm or less.

The polymer latex of the present invention is preferably polymerized in the presence of a water-soluble polymer and / or a surfactant.

At least one of the monomers forming the polymer latex used in the present invention has a solubility in water at 25 ° C. of not more than 0.025% by weight, preferably not more than 0.015% by weight. Examples of such ethylenic monomers include hexyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, tert-octyl acrylate, nonyl acrylate, iso-nonyl acrylate, cyclohexyl acrylate, n-stearyl acrylate, lauryl acrylate, tridecyl acrylate, etc. Acrylic acid esters, butyl methacrylate, iso-butyl methacrylate, tert-butyl methacrylate, hexyl metalylate, 2-ethylhexyl methacrylate, octyl methacrylate, iso-octyl methacrylate, tert-octyl methacrylate, nonyl methacrylate, iso-nonyl methacrylate, cyclohexyl Methacrylate, n-stearyl methacrylate, lauryl methacrylate, tridecyl methacrylate, etc. Acrylic acid esters and divinyl benzene.

The solubility of the monomer forming the polymer latex used in the present invention in water at 25 ° C. can be measured by the method described in Basic Operation 1 of New Experimental Chemistry Course (Maruzen Kagaku, 1975). . The solubility of the monomer of the present invention in water at 25 ° C. measured by this method is, for example,
2-ethylhexyl acrylate is 0.01% by weight, 2-ethylhexyl methacrylate is 0.01% by weight, and cyclohexyl methacrylate is 0.01% by weight. The comparative monomer was 0.03 wt% for styrene, 0.32 wt% for butyl acrylate and 0.03 wt% for butyl methacrylate.

The polymer latex used in the present invention may be copolymerized with another monomer compound other than the above-mentioned monomer compounds, and as the copolymerizable ethylenic monomer compound,
For example, acrylic acid esters, methacrylic acid esters, vinyl esters, olefins, styrenes, crotonic acid esters, itaconic acid diesters, maleic acid diesters, fumaric acid diesters, acrylamides, allyl compounds, vinyl ethers, Examples thereof include vinyl ketones, vinyl heterocyclic compounds, glycidyl esters, unsaturated nitriles, polyfunctional monomers and monomer compounds selected from a combination of two or more kinds selected from various unsaturated acids.

More specific examples of these monomer compounds include acrylic acid esters such as methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, sec-butyl acrylate. , Tert-butyl acrylate, amyl acrylate,
Hexyl acrylate, 2-chloroethyl acrylate,
2-bromoethyl acrylate, 4-chlorobutyl acrylate, cyanoethyl acrylate, 2-acetoxyethyl acrylate, dimethylaminoethyl acrylate, methoxybenzyl acrylate, 2-chlorocyclohexyl acrylate, furfuryl acrylate, tetrahydrofurfuryl acrylate, phenyl acrylate, 2- Hydroxyethyl acrylate, 5-hydroxypentyl acrylate, 2,2-dimethyl-3-hydroxypropyl acrylate, 2-methoxyethyl acrylate, 3-methoxybutyl acrylate, 2-ethoxyethyl acrylate,
2-iso-propoxy acrylate, 2-butoxyethyl acrylate, 2- (2-methoxyethoxy) ethyl acrylate, 2- (2-butoxyethoxy) ethyl acrylate, ω-
Examples thereof include methoxypolyethylene glycol acrylate (addition mol number n = 9), 1-bromo-2-methoxyethyl acrylate, 1,1-dichloro-2-ethoxyethyl acrylate.

Examples of methacrylic acid esters include methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, amyl methacrylate, chlorobenzyl methacrylate, sulfopropyl methacrylate, N-ethyl-N-phenylaminoethyl methacrylate, 2- (3-phenylpropyloxy) ethyl methacrylate, dimethylaminophenoxyethyl methacrylate, furfuryl methacrylate,
Tetrahydrofurfuryl methacrylate, phenyl methacrylate, cresyl methacrylate, naphthyl methacrylate, 2-hydroxyethyl methacrylate, 4-hydroxybutyl methacrylate, triethylene glycol monomethacrylate, dipropylene glycol monomethacrylate, 2-methoxyethyl methacrylate, 3-methoxybutyl methacrylate , 2-acetoxyethyl methacrylate, 2-acetoacetoxyethyl methacrylate,
2-ethoxyethyl methacrylate, 2-iso-propoxyethyl methacrylate, 2-butoxyethyl methacrylate, 2- (2-methoxyethoxy) ethyl methacrylate, 2-
(2-Ethoxyethoxy) ethyl methacrylate, 2- (2-butoxyethoxy) ethyl methacrylate, ω-methoxypolyethylene glycol methacrylate (additional mol number n =
6), allyl methacrylate, dimethylaminoethyl methyl methacrylate salt of methacrylic acid and the like.

Examples of vinyl esters include vinyl acetate, vinyl propionate, vinyl butyrate,
Examples thereof include vinyl isobutyrate, vinyl caproate, vinyl chloroacetate, vinyl methoxyacetate, vinyl phenyl acetate, vinyl benzoate, vinyl salicylate and the like.

Examples of olefins include dicyclopentadiene, ethylene, propylene, 1-butene, 1-pentene, vinyl chloride, vinylidene chloride, isoprene, chloroprene, butadiene and 2,3-dimethylbutadiene. it can.

Examples of styrenes include styrene,
Examples thereof include methylstyrene, dimethylstyrene, trimethylstyrene, ethylstyrene, isopropylstyrene, chloromethylstyrene, methoxystyrene, acetoxystyrene, chlorostyrene, dichlorostyrene, bromstyrene, trifluoromethylstyrene, and vinylbenzoic acid methyl ester.

Examples of crotonic acid esters include butyl crotonic acid and hexyl crotonic acid.

Examples of diethyl itaconates include dimethyl itaconate, diethyl itaconate and dibutyl itaconate.

Examples of maleic acid diesters include diethyl maleate, dimethyl maleate, dibutyl maleate and the like.

Examples of fumaric acid diesters include:
Examples include diethyl fumarate, dimethyl fumarate, dibutyl fumarate, and the like.

Examples of acrylamides include acrylamide, methyl acrylamide, ethyl acrylamide, propyl acrylamide, butyl acrylamide and tert-acrylamide.
Butylacrylamide, cyclohexylacrylamide, benzylacrylamide, hydroxymethylacrylamide, methoxyethylacrylamide, dimethylaminoethylacrylamide, phenylacrylamide,
Dimethyl acrylamide, diethyl acrylamide, β
-Cyanoethylacrylamide, N- (2-acetoacetoxyethyl) acrylamide, etc .; Methacrylamides, such as methacrylamide, methylmethacrylamide, ethylmethacrylamide, propylmethacrylamide, butylmethacrylamide, tert-butylmethacrylamide, cyclohexylmethacrylamide. , Benzyl methacrylamide, hydroxymethyl methacrylamide, methoxyethyl methacrylamide, dimethylaminoethyl methacrylamide, phenyl methacrylamide, dimethyl methacrylamide, diethyl methacrylamide, β-cyanoethyl methacrylamide, N- (2-acetoacetoxyethyl) methacrylamide Allyl compounds such as allyl acetate, allyl caproate, allyl laurate, allyl benzoate, etc .; vinyl ether Le, such as, for example,
Methyl vinyl ether, butyl vinyl ether, hexyl vinyl ether, methoxyethyl vinyl ether, dimethylaminoethyl vinyl ether, etc .; vinyl ketones, such as methyl vinyl ketone, phenyl vinyl ketone, methoxyethyl vinyl ketone, etc .; vinyl heterocyclic compounds, such as vinyl pyridine, N -Vinylimidazole, N-vinyloxazolidone, N-vinyltriazole,
N-vinylpyrrolidone, etc .; glycidyl esters, such as glycidyl acrylate, glycidyl methacrylate, etc .; unsaturated nitriles, such as acrylonitrile, methacrylonitrile, etc .; polyfunctional monomers such as divinylbenzene, methylenebisacrylamide,
Ethylene glycol dimethacrylate etc.

Further, acrylic acid, methacrylic acid, itaconic acid, maleic acid, monoalkyl itaconate, for example,
Monomethyl itaconate, monoethyl itaconate, monobutyl itaconate, etc .; monoalkyl maleate, such as monomethyl maleate, monoethyl maleate, monobutyl maleate, etc .; citraconic acid, styrene sulfonic acid, vinyl benzyl sulfonic acid, vinyl sulfonic acid, acryloyl Oxyalkyl sulfonic acids, for example
Acryloyloxymethyl sulfonic acid, acryloyloxyethyl sulfonic acid, acryloyloxypropyl sulfonic acid, etc .; methacryloyloxyalkyl sulfonic acid, such as methacryloyloxydimethyl sulfonic acid, methacryloyloxyethyl sulfonic acid, methacryloyloxypropyl sulfonic acid; acrylamidoalkyl sulfonic acid , For example, 2-acrylamido-2-methylethanesulfonic acid, 2-acrylamido-2-methylpropanesulfonic acid, 2-acrylamido-2-methylbutanesulfonic acid, etc .; methacrylamide alkyl sulfonic acid, for example, 2-methacrylamide- 2-Methylethanesulfonic acid, 2-methacrylamido-2-methylpropanesulfonic acid, 2-methacrylamido-2-methylbutanesulfonic acid, etc .; acryloyloxyalkylphosphine , For example, acryloyloxyethyl phosphate, 3-acryloyloxypropyl-2-phosphate and the like; methacryloyloxyalkyl phosphate, for example, methacryloyloxyethyl phosphate, 3-methacryloyloxypropyl-2-phosphate and the like; 3 having two hydrophilic groups 3 Examples include naphthyl-allyloxy-2-hydroxypropanesulfonate. These acids may be salts of alkali metals (eg Na, K, etc.) or ammonium ions. Still other monomer compounds include U.S. Patents 3,459,790, 3,438,708, 3,554,987, and
Crosslinkable monomers described in 4,215,195, 4,247,673, JP-A-57-205735 and the like can be used.
Specific examples of such crosslinkable monomers include N- (2
-Acetoacetoxyethyl) acrylamide, N- {2- (2-acetoacetoxyethoxy) ethyl} acrylamide and the like can be mentioned.

Among these monomer compounds, acrylic acid esters, methacrylic acid esters, vinyl esters, styrenes and olefins are preferably used.

As the surfactant used in the polymerization of the polymer latex of the present invention, an anionic surfactant,
Although any of nonionic surfactants, cationic surfactants and amphoteric surfactants can be used, anionic surfactants and / or nonionic surfactants are preferred. As the anionic surfactant and the nonionic surfactant, various compounds known in the art can be used, but the anionic surfactant is particularly preferably used.

Examples of the water-soluble polymer used in the polymerization of the polymer latex of the present invention include synthetic polymers and natural water-soluble polymers, both of which are preferably used in the present invention. Among them, the synthetic water-soluble polymer, for example, those having a nonionic group in the molecular structure, those having an anionic group, those having a cationic group, those having a nonionic group and an anionic group, nonionic Examples thereof include those having a group and a cationic group, those having an anionic group and a cationic group, and the like. Examples of the nonionic group include an ether group, an alkylene oxide group, a hydroxy group, an amide group, and an amino group. Examples of the anionic group include a carboxylic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a sulfonic acid group or a salt thereof, and the like. Examples of the cationic group include a quaternary ammonium base and a tertiary amino group.

As the natural water-soluble polymer, for example, those having a nonionic group, those having an anionic group, those having a cationic group, those having a nonionic group and an anionic group in the molecular structure, Examples thereof include those having a nonionic group and a cationic group, those having an anionic group and a cationic group, and the like.

As the water-soluble polymer used in the polymerization of the polymer latex of the present invention, a synthetic water-soluble polymer, a natural water-soluble polymer having an anionic group, a nonionic group and an anionic group can be used. Those having a can be preferably used.

In the present invention, the water-soluble polymer is 20
It may be dissolved in 0.05 g or more with respect to 100 g of water at 0 ° C., preferably 0.1 g or more.

As a natural water-soluble polymer, a collection of technical data on water-soluble polymer water-dispersed resin (Management Development Center)
, But preferably lignin, starch, pullulan, cellulose, dextran, dextrin, glycogen, alginic acid, gelatin, collagen, guar gum, gum arabic, laminaran, lichenin, nigran, etc. and derivatives thereof. is there. As the natural water-soluble polymer derivative, sulfonated, carboxylated, phosphorylated, sulfoalkylenated, carboxyalkylenated, alkylphosphorylated and salts thereof are preferably used. Particularly preferred are glucose, gelatin, dextran, cellulose and derivatives thereof.

The polymer latex used in the present invention can be easily produced by various methods. For example, there are an emulsion polymerization method, and a method of redispersing a polymer obtained by solution polymerization or bulk polymerization.

In the emulsion polymerization method, water is used as the dispersion medium, 10 to 50% by weight of the monomer relative to water, 0.05 to 5% by weight of the polymerization initiator relative to the monomer, and 0.1 to 20% by weight of the monomer. About 3 with dispersant
It can be obtained by polymerizing with stirring at 0 to 100 ° C, preferably 60 to 90 ° C for 3 to 8 hours. The concentration of the monomer, the amount of the initiator, the reaction temperature, the time, etc. can be changed widely and easily.

As the initiator, water-soluble peroxides (eg potassium persulfate, ammonium persulfate, etc.), water-soluble azo compounds (eg 2,2′-azobis- (2-amidinopropane)-) are used.
Hydrochloride etc.) and the like.

Examples of the dispersant include water-soluble polymers, anionic surfactants, nonionic surfactants, cationic surfactants and amphoteric surfactants, which may be used alone or in combination. And preferably a combination of a water-soluble polymer and a nonionic or anionic activator.

In solution polymerization, a mixture of monomers having a suitable concentration in a suitable solvent (eg, ethanol, methanol, water, etc.) (usually 40% by weight or less, preferably 10 to 25% by weight based on the solvent) is used. Mixture) in the presence of a polymerization initiator (eg, benzoyl peroxide, azobisisobutyronitrile, ammonium persulfate, etc.) at an appropriate temperature (eg 40 to 120).
The copolymerization reaction is carried out by heating to 50 ° C, preferably 50 to 100 ° C. After that, the reaction mixture is poured into a medium in which the produced copolymer is not dissolved, the product is allowed to settle, and then the unreacted mixture is separated and removed by drying.

Next, the copolymer is dissolved in a solvent that dissolves in water but is insoluble in water (eg ethyl acetate, butanol, etc.), and is vigorously dispersed in the presence of a dispersant (eg surfactant, water-soluble polymer, etc.), and then the solvent is added. Is distilled off to obtain a polymer latex.

The polymer forming the polymer latex used in the present invention has a Tg (glass transition temperature) of preferably 60 ° C. or lower, particularly preferably 40 ° C. or lower.

The Tg's of many polymers of ethylenic monomers used in the present invention are determined by Brand Wrap et al., "Polymer Handbook", pages III-139 to III-179 (1966).
Year) (Wiley and Sons Edition),
The Tg (° K) of the copolymer is represented by the following formula.

Tg (copolymer) = v ₁ Tg ₁ + v ₂ Tg ₂ + ... + v WTgW where v ₁ , v ₂ and vW represent the weight fractions of the monomers in the copolymer, and Tg ₁ , Tg ₂ and TgW represents the Tg (° K) of the homopolymer of each monomer in the copolymer.

The Tg calculated according to the above equation is ± 5 ° C.
There is a precision of.

Regarding the method for synthesizing the polymer latex used in the present invention, US Pat. Nos. 2,852,386 and 2,853,457,
No. 3,411,911, No. 3,411,912, No. 4,197,127, Belgium Patents 688,882, No. 691,360, No. 712,823, Japanese Patent Publication No. 45-5331, No. 60-18540, No. 51-130217, No. 58.
-137831, 55-50240 and so on.

Any polymer latex having an average particle size of 0.5 to 300 nm can be preferably used, and 30 to 250 nm is particularly preferable.

The particle size of the polymer latex used in the present invention is determined by electron microscope photography, soap titration method, light scattering method, centrifugal sedimentation described in “Chemistry of Polymer Latex” (Kobunshi Kogakukai, 1973). Although it can be measured by the method, the light scattering method is preferably used. As a device for the light scattering method, DLS700 (manufactured by Otsuka Electronics Co., Ltd.) was used.

The molecular weight is not specified, but the total molecular weight is preferably 1,000 to 1,000,000, more preferably 2,000.
It is 0 to 500,000.

The polymer latex used in the present invention can be contained in the silver halide photographic constituent layers of the present invention as it is or after being dispersed in water. The content of the polymer latex is preferably 5 to 70% by weight based on the binder of the photographic constituent layer. The addition place may be a photosensitive layer or a non-photosensitive layer.

The polymer latex used in the present invention includes a case where a functional polymer such as a polymer coupler or a polymer ultraviolet absorber is added in the form of latex.

Next, an example of a method for producing a polymer latex will be described, but the present invention is not limited to the following example.

(Production Method of Polymer Latex) Production Example 1 (Synthesis of Lx-1) A 1,000 ml four-necked flask was provided with a stirrer, a thermometer, a dropping funnel, a nitrogen introducing tube and a reflux condenser, and nitrogen gas was supplied. While introducing and deoxidizing, 350 ml of distilled water was added and heated until the internal temperature reached 80 ° C. 4.5 g of Sf-1 as a dispersant is added, 0.45 g of ammonium persulfate is further added as an initiator, and then 90 g of ethylhexyl acrylate is added dropwise by a dropping funnel over about 1 hour. After the completion of the dropping, the reaction is continued for 5 hours as it is, and then unreacted monomers are removed by steam distillation. Then, it is cooled and adjusted to pH 6 with aqueous ammonia to obtain a polymer latex. The particle size was 150 nm.

Production Example 2 (Synthesis of Lx-2) A 1,000 ml four-necked flask was equipped with a stirrer, a thermometer, a dropping funnel, a nitrogen introducing tube, and a reflux condenser, while introducing nitrogen gas and performing deoxidation. 350 ml of distilled water was added and the mixture was heated until the internal temperature reached 80 ° C. P-3 according to the present invention as a dispersant,
4.5 g of ammonium persulfate was added as an initiator, and then 0.45 g of ammonium persulfate was added, followed by ethylhexyl acrylate.
90 g is added dropwise with a dropping funnel over about 1 hour. After the completion of dropping, the reaction is continued for 4 hours as it is, and then unreacted monomers are removed by steam distillation. Then cool and pH 6 with ammonia water.
To obtain polymer latex. The particle size was 200 nm.

Production Example 3 (Synthesis of Comparative Latex L) 0.25 kg of KMDS (dextran sulfate sodium salt) manufactured by Meito Sangyo and ammonium persulfate in 40 liters of water.
To a liquid added with 0.05 kg, while stirring at a liquid temperature of 81 ° C. under a nitrogen atmosphere, a mixed liquid of 4.51 kg of n-butyl acrylate, 5.49 kg of styrene and 0.1 kg of acrylic acid was added over 1 hour, and then ammonium persulfate was added. After adding 0.005 kg, the mixture was further stirred for 1.5 hours, cooled, and adjusted to pH 6 with aqueous ammonia.

The latex solution thus obtained was used as GF manufactured by Whotman.
The mixture was filtered with a / D filter and the weight was adjusted to 50.5 kg with water to prepare a monodisperse latex (L) having an average particle diameter of 250 nm.

Specific examples of the polymer latex according to the present invention and the dispersant used for its synthesis are shown below. The suffix of the monomer unit indicates the content percentage of each.

[0075]

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[0076]

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[0077]

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[0078]

[Chemical 4]

[0079]

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[0080]

[Chemical 6]

The processing of the silver halide photographic light-sensitive material of the present invention is described, for example, in (RD) -17643, XX to XXI, pages 29 to 30, or 308119, XX to XXI, pages 1011 to 1012. Treatment with such a treatment liquid may be performed.

As the processing agent in the black and white photographic processing agent,
Dihydroxybenzenes (eg hydroquinone),
3-Pyrazolidones (for example, 1-phenyl-3-pyrazolidone), aminophenols (for example, N-methyl-aminophenol) and the like can be used alone or in combination. In addition, a known developer such as a preservative,
If necessary, an alkali agent, a pH buffering agent, an antifoggant, a hardener, a development accelerator, a surfactant, a defoaming agent, a toning agent, a water softener, a solubilizing agent, a viscosity imparting agent, etc. may be used. Good.

A fixing agent such as thiosulfate or thiocyanate is used in the fixing solution, and a water-soluble aluminum salt such as aluminum sulfate or potassium alum may be contained as a hardening agent. In addition, preservatives, pH adjusters, water softeners, etc. may be included.

In the present invention, the total processing time (Dry to Dry)
It can be processed very quickly in less than 60 seconds. The term "development process time" or "development time" as used in the present invention means that the leading edge of the photosensitive material to be processed is immersed in the developing tank solution of an automatic developing machine (hereinafter, "developing machine") and then in the next fixing solution. "Fixing time" is the time from immersion in the fixing tank solution to immersion in the next washing tank solution (stabilizing solution),
"Washing time" means the time of immersion in the washing tank liquid. Also, "drying time" is usually 35 for an automatic processor.
A drying zone in which hot air of -100 ° C, preferably 40-80 ° C is blown is provided, and it means the time during which the drying zone is entered. In the development processing of the present invention, the development time is 3
~ 15 seconds, preferably 3-10 seconds. Development temperature is 25-50
C is preferable, and 30 to 40 C is more preferable. The fixing temperature and time are preferably 20 to 50 ° C and 2 to 12 seconds, and 30 to 40 ° C and 2 to
10 seconds is more preferable. Washing or stabilizing bath temperature and time are preferably 0 to 50 ° C and 2 to 15 seconds, and more preferably 15 to 40 ° C and 2 to 8 seconds.

According to the method of the present invention, the silver halide photographic light-sensitive material which has been developed, fixed and washed (or stabilized) is dried through a squeeze roller for squeezing washing water.

The drying is carried out at 40 to 100 ° C., and the drying time can be appropriately changed depending on the ambient temperature, but it is usually 3 to 12 seconds, preferably 40 to 80 ° C. for 3 to 12 seconds, particularly preferably 40.
It is 3 to 8 seconds at -80 ° C. It is more preferable to use a far infrared heater.

[0087]

The present invention will be described in detail below with reference to examples, but the embodiments of the present invention are not limited thereto.

Example 1 First, a photosensitive material for evaluation was prepared as follows.

Preparation of Photosensitive Material (Preparation of Seed Emulsion-1) Seed Emulsion-1 was prepared as follows.

A1 ossein gelatin 24.2 g water 9657 ml polypropyleneoxy-polyethyleneoxy-disuccinate sodium salt (10% ethanol aqueous solution) 6.78 ml potassium bromide 10.8 g 10% nitric acid 114 ml B1 2.5N silver nitrate aqueous solution 2825 ml C1 potassium bromide 841 g 2825 ml of D1 1.75N potassium bromide aqueous solution with water At the following silver potential control amount of 42 ° C., each of solution B1 and solution C1 is added to solution A1 using the mixing stirrer shown in JP-B-58-58288 and 58-58289.
Nucleation was performed by adding 464.3 ml by the double-sided mixing method over 1.5 minutes.

After the addition of the solutions B1 and C1 was stopped, it took 60 minutes to raise the temperature of the solution A1 to 60 ° C., adjust the pH to 5.0 with 3% KOH, and then add the solution B1 again. Solution C1 was added by the double jet method at a flow rate of 55.4 ml / min each for 42 minutes. The silver potential (measured with a silver ion selective electrode using a saturated silver-silver chloride electrode as a reference electrode) during this temperature increase from 42 ° C. to 60 ° C. and re-simultaneous mixing with the solutions B1 and C1 was +8 mv each using the solution D1. And was controlled to be +16 mv.

After the addition was completed, the pH was adjusted to 6 with 3% KOH, and the mixture was immediately desalted and washed with water. This seed emulsion has a maximum adjacent side ratio of 1.0 to 90% of the total projected area of silver halide grains.
It was confirmed by an electron microscope that the hexagonal tabular grains had an average thickness of 0.064 μm and an average grain size (circular diameter conversion) of 0.595 μm. The coefficient of variation of thickness is
The coefficient of variation of the distance between twin planes was 40% and 42%.

(Preparation of Em-1) A tabular silver halide emulsion Em-1 was prepared by using seed emulsion-1 and the following four kinds of solutions.
Was prepared.

A2 ossein gelatin 34.03 g polypropyleneoxy-polyethyleneoxy-disuccinate sodium salt (10% ethanol aqueous solution) 2.25 ml seed emulsion-1 1.218 mol equivalent water finished to 3150 ml B2 potassium bromide 1734 g water finished to 3644 ml C2 Silver nitrate 2478g Finished to 4165ml with water D2 3wt% gelatin and silver iodide grains (average grain size 0.05μ) Fine grain emulsion (*) 0.080mol equivalent *: 0.06mol potassium iodide 5.0wt% To 6.64 l of the above gelatin aqueous solution, 2 l each of an aqueous solution containing 7.06 mol of silver nitrate and 7.06 mol of potassium iodide were added over 10 minutes. The pH during fine particle formation is 2.0 using nitric acid.
The temperature was controlled at 40 ° C. After forming the particles, the pH was adjusted to 6.0 using an aqueous sodium carbonate solution.

Solution A2 was vigorously stirred in the reaction vessel while keeping it at 60 ° C., and a part of solution B2, a part of solution C2 and a half amount of solution D2 were added thereto by a simultaneous mixing method over 5 minutes. Then, half of the remaining amount of the solution B2 and the solution C2 is continuously added over 37 minutes, and then a part of the solution B2, a part of the solution C2 and the rest of the solution D2 is added over 15 minutes, and finally, The remaining total amount of the solutions B2 and C2 was added thereto over 33 minutes. During this period, pH was kept at 5.8 and pH was kept at 8.8 throughout.
Here, the addition rates of the solution B2 and the solution C2 were changed in a function-like manner with respect to time so as to be commensurate with the critical growth rate.

Further, the above solution D2 was added in an amount of 0.15 with respect to the total amount of silver.
Halogen substitution was carried out by adding mol% equivalent. After the addition was completed, this emulsion was cooled to 40 ° C., and 1800 ml of a 13.8% (weight) modified gelatin aqueous solution modified with phenylcarbamoyl groups (substitution rate 90%) was added as an aggregating polymer agent, and the mixture was stirred for 3 minutes. Then add acetic acid 56% (weight) aqueous solution,
The pH of the emulsion was adjusted to 4.6, the mixture was stirred for 3 minutes, allowed to stand for 20 minutes, and the supernatant was drained by decantation.
Thereafter, 9.0 l of distilled water at 40 ° C. was added, and after stirring and standing, the supernatant was drained. Further, 11.25 l of distilled water was added, and after stirring and standing, the supernatant was drained. Subsequently, a gelatin aqueous solution and a 10% (weight) aqueous sodium carbonate solution were added to adjust the pH to 5.80, and the mixture was stirred at 50 ° C. for 30 minutes and redispersed. After redispersion, pH was adjusted to 5.80 and pAg was adjusted to 8.06 at 40 ° C.

When the obtained silver halide emulsion was observed with an electron microscope, tabular silver halide grains having an average grain size of 1.11 μ, an average thickness of 0.25 μ, an average aspect ratio of about 4.5 and a grain size distribution of 18.1% were obtained. Met.

(Preparation of Em-2 and 3) The same as Em-1 except that the amount of seed emulsion in the portion A2 was adjusted, the average grain size was 1.29 μm, the average thickness was 0.29 μm, and the average aspect ratio was about 4.
4, 17% wide particle size distribution of Em-2 and average particle size 0.87μ
Em-3 having m, an average thickness of 0.20 μm, an average aspect ratio of about 4.4 and a particle size distribution of 19% was obtained.

(Preparation of Em-4) Potassium bromide 200 g Potassium iodide 7.5 g Ocein gelatin 25 g Sodium p-toluenesulfinate 5 g Make up to 1000 ml with water and maintain at 48 ° C. with vigorous stirring 4-hydroxy-6- Methyl-1,3,3a, 7-tetrazaindene 1.0 g,
Sodium thiosulfate (12 g) and glacial acetic acid (12.5 ml) were added, and 2 minutes later, 2 ml of ammonia silver complex aqueous solution (AgNO ₃ 125 g) was added.
Added over minutes. Then, it was aged at 40 ° C for 50 minutes. Next, washing with water by the precipitation method in the same manner as in the preparation of Em-1
Add gelatin and add potassium bromide and NaOH to pH 8.9 and pH 6.2.
And redispersed. The obtained emulsion was a spherical particle having a little corner and the average particle diameter was 0.8 μm.

Next, after the above-mentioned emulsions Em-1 to Em-4 were heated to 60 ° C., a predetermined amount of the spectral sensitizing dye was added as a solid fine particle dispersion, and then adenine, ammonium thiocyanate, chloroauric acid and thioauric acid were added. Add a mixed aqueous solution of sodium sulfate and a dispersion of triphenylphosphine selenide,
After 60 minutes, a silver iodide fine grain emulsion was added, and ripening was carried out for a total of 2 hours. 4-hydroxy as a stabilizer at the end of aging
A predetermined amount of -6-methyl-1,3,3a, 7-tetrazaindene (TAI) was added.

The above-mentioned additives and their addition amounts (per mol of AgX) are shown below.

Spectral sensitizing dye (I) 2.0 mg 5,5′-di- (butoxycarbonyl) -1,1′-diethyl-3,3′-di- (4-sulfobutyl) -benzimidazolocarbocyanine sodium Anhydrous salt Spectral sensitizing dye (II) 120 mg 5,5'-Dichloro-9-ethyl-3,3 '-(3-sulfopropyl) -oxacarbocyanine sodium salt Anhydrous adenine 15 mg Potassium thiocyanate 95 mg Gold chloride Acid 2.5 mg Sodium thiosulfate 2.0 mg Triphenylphosphine selenide 0.4 mg Fine silver iodide 280 mg 4-Hydroxy-6-methyl-1,3,3a, 7-tetrazaindene (TAI) 500 mg Spectral sensitizing dye solid The fine particle dispersion was prepared by a method similar to that described in JP-A No. 5-297496. That is, it was obtained by adding a predetermined amount of the spectral sensitizing dye to water whose temperature had been adjusted to 27 ° C. in advance and stirring the mixture with a high-speed stirrer (dissolver) at 3,500 rpm for 30 to 120 minutes.

A dispersion of the above selenium sensitizer was prepared as follows. That is, triphenylphosphine selenide
120 g was added to 30 kg of ethyl acetate at 50 ° C., stirred and completely dissolved. On the other hand, 3.8 kg of photographic gelatin was dissolved in 38 kg of pure water, and 93 g of a 25 wt% sodium dodecylbenzenesulfonate aqueous solution was added thereto. Next, these two liquids were mixed and dispersed at 50 ° C. for 30 minutes at a peripheral speed of the dispersing blade of 40 m / sec by a high-speed stirring type disperser having a dissolver having a diameter of 10 cm. Then, the ethyl acetate was rapidly removed under reduced pressure with stirring until the residual concentration of ethyl acetate was 0.3 wt% or less. Then, this dispersion was diluted with pure water to finish at 80 kg. A part of the thus obtained dispersion was collected and used in the above experiment.

Next, to the emulsion thus sensitized, the additives described below and the polymer latex of the present invention shown in Table 1 were added to prepare an emulsion layer coating solution. At the same time, a protective layer coating solution was also prepared.

[0105] Next, the manufacturing method described in JP-A-62-115035, subjected to subbing processed beforehand emulsion coating side, diacetyl cellulose 143 mg / m ² on the back surface side, a silicon oxide 5 mg / m ² Simultaneous layering of the above emulsion layer coating solution and protective layer coating solution from the bottom to a triacetyl cellulose film base (thickness: 120 μm) colored blue with a concentration of 0.15 Coated and dried.

(Emulsion Layer) The following various additives were added to each emulsion obtained above.

Compound (G) 0.5 mg / m ² 2,6-bis (hydroxyamino) -4-diethylamino-5 mg / m ² 1,3,5-triazine t-butyl-catechol 130 mg / m ² polyvinylpyrrolidone (molecular weight 10,000) 35 mg / m ² Styrene-maleic anhydride copolymer 80 mg / m ² Sodium polystyrene sulfonate 80 mg / m ² Trimethylolpropane 350 mg / m ² Diethylene glycol 50 mg / m ² Nitrophenyl-triphenyl-phosphonium chloride 20 mg / m ² Ammonium 1,3-dihydroxybenzene-4-sulfonate 500mg / m ² 2-Mercaptobenzimidazole-5-sodium sulfonate 5mg / m ² Compound (H) 0.5mg / m ² nC ₄ H ₉ OCH ₂ CH (OH) CH ₂ N (CH ₂ COOH) ₂ 350 mg / m ² compound (M) 5 mg / m ² compound (N) 5 mg / m ² colloidal silica 0.5 g / m ² polymer latex (shown in Table 1) 0.3 g / m ² dextrin (Average molecular weight 1000) 0.2 g / m ² Then, the gelatin was adjusted to 2.5 g / m ² .

(Protective layer) Gelatin 0.8 g / m ² Matting agent composed of polymethylmethacrylate 50 mg / m ² (area average particle size 7.0 μm) Formaldehyde 20 mg / m ² 2,4-dichloro-6-hydroxy-1,3 , 5-Triazine sodium salt 10 mg / m ² bis-vinylsulfonylmethyl ether 36 mg / m ² polymer latex (shown in Table 1) 0.3 g / m ² polyacrylamide (average molecular weight 10000) 0.1 g / m ² sodium polyacrylate 30 mg / M ² polysiloxane (SI) 20 mg / m ² compound (I) 12 mg / m ² compound (J) 2 mg / m ² compound (S-1) 7 mg / m ² compound (K) 15 mg / m ² compound (O) 50 mg / m ² compound (S-2) 5 mg / m ² C ₉ F ₁₉ -O- (CH ₂ CH ₂ O) ₁₁ -H 3 mg / m ² C ₈ F ₁₇ SO ₂ (C ₃ H ₇ ) N- ( _{CH 2 CH 2 O) 15 H} 2mg / m 2 C 8 F 17 SO 2 (C 3 H 7) N- (CH 2 CH 2 O) 4 - (CH 2) 4 SO 3 Na 1mg / m 2 Here, emulsions The coating silver amount of the layer coating solution is the sensitometry after coating. Was adjusted so that the maximum density of the light-sensitive material was 2.6. The amount of coated silver at that time is shown in Table 1.

[0109]

[Chemical 7]

[0110]

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(Sensitometry) A tungsten light source (color temperature 2856 ° K) was used as an exposure light source having a peak wavelength of 545 nm and a half value width of 15 ± 5 nm on the surface having a silver halide emulsion.
Exposure was performed for 1/20 seconds as a light source by combining filters having the filter characteristics shown in FIG.

For the developing treatment, the above-mentioned developing solution and fixing solution were used, and an automatic developing machine SRX-501 (Konica Corp.) was used in the same manner.
Process) to obtain the lowest concentration of the obtained sample.
The exposure dose required to reach a value to which 0.5 was added was measured and expressed in lux seconds. Therefore, the sensitivity is shown in looks.

(Evaluation of Scratch Resistance) 25 samples were prepared.
After conditioning the humidity for 1 hour under the conditions of ℃ and 30% RH, use a commercially available nylon scrubbing tool under the same conditions and apply a weight of 10 to an area of 2 × 2 cm.
0 g was applied and rubbed at a speed of 2 cm per second. After performing the above-mentioned automatic development treatment in an unexposed state, the number of blackened scratches was counted.

(Evaluation of Dryability and Transportability) The prepared sample was processed into a roll-shaped film of 100 mm × 30 mm and the density was 1.0.
After being exposed to ± 0.1, continuous processing was performed using the automatic developing machine, and the dryness of the film was evaluated by touch at the drying outlet. Further, when the leading portion of the film came out of the drying outlet, the outlet portions corresponding to the left and right sides of the film were marked to measure the meandering width on the left and right during the treatment.
(For the meandering width, the maximum deviation width during processing is shown in Table 1.) Evaluation of drying property 1. The film is completely dry from the leading edge to the trailing edge. 2. The rear edge is slightly wet, but there is no adhesion between the films. 3. The film is slightly wet at the leading edge and the films adhere to each other at the trailing edge. Films adhere to each other because they are wet from the tip (Evaluation of residual color) The prepared sample is processed into a 100mm x 30mm roll-shaped film and processed with the above-mentioned automatic developing machine without being exposed. The transmission density in green light was measured. The larger the value, the poorer the residual color contamination.

Table 1 shows the above evaluation results.

[0116]

[Table 1]

From the results shown in Table 1, the sample of the present invention does not cause the film to meander even when a roll-shaped long film is conveyed at high speed, has high sensitivity and does not deteriorate the physical properties of the film, and further deteriorates the residual color property. You can see that there is no.

[0118]

According to the present invention, even when a roll-shaped long photosensitive material such as a photosensitive material for indirect X-ray photographing is processed at a high speed, the photosensitive material does not meander, the sensitivity is high and the physical properties of the film are not deteriorated. Moreover, it was possible to provide a silver halide photographic light-sensitive material having suitability for rapid processing such as no residual color deterioration.

[Brief description of drawings]

[Figure 1] Filter characteristics

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location G03C 5/30

Claims (2)

[Claims] 1. A silver halide photographic light-sensitive material having a silver halide emulsion layer of one layer on one side of a support having a thickness of 130 μm or less, wherein the surface of the light-sensitive material having the silver halide emulsion has a peak wavelength of 545 nm. Exposure with monochromatic light having a half-value width of 15 ± 5 nm, and using a developer of the following composition, the developer temperature is 35
The exposure amount required to obtain a value obtained by adding 0.5 to the minimum density of an image obtained by developing at 15 ° C for a development time of 15 seconds is 0.004 lux seconds to 0.010 lux seconds and is contained in the silver halide emulsion layer. At least 50% or more of the total projected area of the silver halide grains are tabular grains having an aspect ratio of 2 or more, and the solubility in water at 25 ° C. in the silver halide emulsion layer and / or other layers is 0.025. A silver halide photographic light-sensitive material comprising one kind of polymer latex containing at least one kind of monomer as a monomer unit in an amount of not more than 1% by weight. Developer composition Potassium hydroxide 22g Potassium sulfite 63g Boric acid 10g Hydroquinone 26g Triethylene glycol 16g 5-Methylbenzotriazole 0.06g 1-Phenyl-3-mercaptotetrazole 0.01g Glacial acetic acid 12g 1-Phenyl-3-pyrazolidone 1.2g Glutaraldehyde 5g Potassium bromide 4g Water was added to make 1 liter, and the pH was adjusted to 10.0. 2. The silver halide photographic light-sensitive material according to claim 1, wherein the time from the start of processing to the end of processing (Dry to Dry processing time) is within 60 seconds in the development processing step.