JPH0777753A - Photographic sensitive material having transparent magnetic recording layer - Google Patents

Abstract

PURPOSE:To obtain the photographic sensitive material having the transparent magnetic recording layer superior in slidability and abrasion resistance and not deteriorated in those even after long time lapse and after development processing, reduced in occurrence of errors in recording and reproduction of magnetic information, high in output, and enhanced in the reliability of magnetic recording. CONSTITUTION:The photographic sensitive material having at least one silver halide emulsion layer on one side of a support and a transparent magnetic recording layer containing a lubricant represented by the formula; R1COR2 in which R1 is >=11 C alkyl; R2 is-ON,-OH,-NH2, or-OR3; M is an alkali metal atom; and R3 is a >=12 C aliphatic saturated or unsaturated hydrocarbon group. The lubricant has a cyclohexane-extractable amount of 0.005-0.1g/m<2>.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a photographic light-sensitive material having a magnetic recording layer.

[0002]

2. Description of the Related Art For a photographic light-sensitive material, for example, various kinds of information on the photographic light-sensitive material such as type / manufacturing number, maker name, emulsion No. Conditions, filters used, weather, shooting frame size, camera model, various information at the time of camera shooting such as use of anamorphic lens, for example, number of prints, selection of filter, customer's color preference, Various information necessary for printing, such as the size of the trimming frame,
For example, inputting various information obtained at the time of printing such as the number of prints, selection of filters, customer's color preference, size of trimming frame, and other customer information is important for management. It is also necessary to improve print quality and improve the efficiency of printing work.

In a conventional photographic light-sensitive material, it is impossible to input all the information, and
At the time of shooting, I was only optically entering information such as the shooting date / time, aperture, and exposure time. Moreover, at the time of printing, it was impossible to input the above information into the photographic light-sensitive material because there was no means for that.

Since the magnetic recording system is easy to record / reproduce, the use of the magnetic recording system for inputting the above various information to the photographic light-sensitive material has been studied and various techniques have been proposed.

For example, a stripe-shaped magnetic recording layer in which fine particles of a ferromagnetic material are dispersed is provided on the emulsion surface or the back surface next to the image area, and information such as voice and photographing conditions is provided to a silver halide photographic light-sensitive material. Recording on top is described in JP-A-50-62.
No. 627, No. 49-4503, U.S. Pat.No. 3,243,376, No. 3,220,843, etc., and
Providing a transparent magnetic recording layer on the back surface of a silver halide photographic light-sensitive material to obtain the required transparency by selecting the amount and size of magnetizable particles is disclosed in U.S. Pat. No. 3,782,947, 4,279,945. No. 4,302,523 and the like. Also, US Pat. No. 4,947,196 and WO90 / 04254 describe a photographing camera having a magnetic head together with a roll-shaped film having a magnetic recording layer containing a magnetic material that enables magnetic recording on the back surface of the photographic film. Has been done.

By providing these magnetic recording layers, it becomes possible to record the above-mentioned various kinds of information in the silver halide photographic light-sensitive material, which has been difficult in the past, and also to record voice and image signals in the future. Have sex.

However, in the silver halide photographic light-sensitive material provided with these magnetic recording layers, friction increases due to the magnetic recording layers, and when a film is conveyed in a camera, an automatic processor, etc., its conveying property is poor. At the same time, slippage between the magnetic head and the magnetic recording layer deteriorates, the magnetic head is scratched, the magnetic recording layer is damaged, and powder is generated, causing dropout of the magnetic recording signal. The problem arises. Further, since the magnetic recording layer is thin, there is a problem in durability of the magnetic recording layer.

In order to reduce friction of the magnetic recording layer, provide slipperiness for contact between the magnetic head and the magnetic recording layer, and provide scratch resistance to the magnetic recording layer, a photographic light-sensitive material contains a lubricant. However, if a lubricant is simply added to the magnetic recording layer, the lubricant containing magnetic particles will be adsorbed and the concentration of the lubricant on the outermost surface of the magnetic recording layer will decrease. Therefore, it was not possible to provide the magnetic recording layer with sufficient slidability.

[0009]

The first object of the present invention is to prevent the lubricant from being adsorbed on the surface of the magnetic powder, to make the added lubricant effectively function as a lubricant, and to have an excellent sliding property. Another object of the present invention is to provide a photographic light-sensitive material having a magnetic recording layer with excellent scratch resistance. A second object of the present invention is to provide a photographic light-sensitive material having a magnetic recording layer whose slipperiness and scratch resistance are not deteriorated even with time or after development processing. A third object of the present invention is to provide a photographic light-sensitive material having a magnetic recording layer in which the occurrence of errors in recording / reproducing magnetic information is reduced, a high output is obtained, and the reliability of magnetic recording is improved. To do.

[0010]

The above objects can be achieved by the following photographic light-sensitive materials. (1) A photographic light-sensitive material having at least one silver halide emulsion layer on one side of a support and a transparent magnetic recording layer on the other side, containing a lubricant represented by the following general formula A photographic light-sensitive material, characterized in that the amount of cyclohexane extracted from the lubricant is 0.005 to 0.1 g / m ² .

[0011]

[Chemical 2] [In the formula, R ₁ represents a saturated or unsaturated aliphatic hydrocarbon group having 11 or more carbon atoms, R ₂ represents an -OM group (M represents an alkali metal), an -OH group, an -NH ₂ group. Or -OR ₃
Represents a group (R ₃ represents a saturated or unsaturated aliphatic hydrocarbon group having 12 or more carbon atoms). (2) The photographic light-sensitive material as described in (1) above, wherein a lubricant is contained in the transparent magnetic recording layer side. (3) The photographic light-sensitive material as described in (1) or (2) above, wherein a transparent magnetic recording layer is present in the outermost layer. (4) The content of magnetic powder in the transparent magnetic recording layer is 10 to 70% by weight.
The photographic light-sensitive material according to the above (1) to (3), characterized in that (5) The above-mentioned (1) to (4), wherein the lubricant is a fatty acid having 12 or more carbon atoms or its alkali metal salt.
The photographic light-sensitive material described.

The present invention will be described in detail below.

First, the transparent magnetic recording layer will be described.

The fine magnetic powder used in the magnetic recording layer of the present invention includes metal magnetic powder, iron oxide magnetic powder, and C.
O-doped iron oxide magnetic powder, chromium dioxide magnetic powder,
A barium ferrite magnetic substance powder or the like can be used.

Methods for producing these magnetic powders are known,
The magnetic powder used in the present invention can also be manufactured according to a known method.

The shape and size of the magnetic powder can be widely used without any particular limitation. As the shape, needle shape, rice grain,
It may have any shape such as a spherical shape, a cubic shape, or a plate shape, but a needle shape or a plate shape is preferable in terms of electromagnetic conversion characteristics. The crystallite size and specific surface area are not particularly limited. The magnetic powder may be surface-treated. For example, it may be surface-treated with a substance containing an element such as titanium, silicon or aluminum, or may be adsorbed with a nitrogen-containing heterocycle such as carboxylic acid, sulfonic acid, sulfuric acid ester, phosphonic acid, phosphoric acid ester or benzotriazole. It may be treated with an organic compound such as a polar compound. The pH of the magnetic powder is not particularly limited, but is preferably in the range of 5-10.

The magnetic metal powder has, for example, a metal content of 75% by weight or more, and a metal content of 80% by weight or more is a ferromagnetic metal or alloy (Fe, Co, Ni, Fe-Co, F).
e-Ni, Co-Ni, Co-Fe-Ni, etc., and other components (Al, Si, S, Sc, etc.) at 20% by weight or less.
Ti, V, Cr, Mn, Cu, Zn, Y, Mo, Rh,
Pd, Ag, Sn, Sb, B, Ba, Ta, W, Re,
Au, Hg, Pb, P, La, Ce, Pr, Nd, T
e, Bi, etc.) are included. Further, the ferromagnetic metal component may contain a small amount of hydroxide or oxide.

Examples of the iron oxide of the iron oxide magnetic material and the Co-doped iron oxide magnetic material include γ-iron oxide.
The ratio of divalent iron / trivalent iron in iron oxide can be used without particular limitation.

Regarding these magnetic recording layers, Japanese Patent Laid-Open No.
-32812 and 53-109604.

Regarding the size of magnetic particles, it is "television" that there is a correlation between the size and the transparency.
Volume 20, No. 2, "Characteristics of Ultrafine Particle Semitransparent Magnetic Recording Material and Its Application". For example, in the acicular powder of γ-Fe ₂ O ₃ , the light transmittance is improved by reducing the particle size.

US Pat. No. 2,950,971 describes that a magnetic layer consisting of magnetic iron oxide dispersed in a binder is transparent to infrared radiation, and US Pat. No. 4,27.
No. 9,945 describes that when the particle size is reduced, the wavelength is increased even when the concentration of magnetic particles in the magnetic layer is relatively high.
It is described that the transmittance of 632.8 nm helium / neon laser light is improved.

However, when the magnetic recording layer is provided in the image forming region of the silver halide color photographic light-sensitive material, not only the red region but also the green region and the blue region must have high light transmittance.

In order to increase the light transmittance in the red region, the green region and the blue region, the particle size of the magnetic particles is reduced and the coating amount of the magnetic particles is also limited.

If the particle size of the magnetic particles is made smaller than a certain level, the required magnetic properties cannot be obtained. Therefore, it is preferable to make the particle size of the magnetic powder small within the range where the required magnetic characteristics are obtained. Further, if the coating amount of the magnetic particles is reduced to a certain extent or more, the required magnetic characteristics cannot be obtained, so it is preferable to reduce the coating amount within the range where the required magnetic characteristics are obtained.

Practically, the coating amount of the magnetic powder is 0.001
A to 3 g / m ^2, more preferably from 0.01 to 1 g / m ^2, particularly preferably 0.2 g / m ² out below.

The binder used in the magnetic recording layer is a known thermoplastic resin, radiation-curable resin, thermosetting resin, or other reactive resin which has been conventionally used as a binder for magnetic recording media. Mixtures of can be used.

As the above-mentioned thermoplastic resin, vinyl chloride-
Vinyl acetate copolymer, vinyl chloride resin, copolymer of vinyl acetate and vinyl alcohol, vinyl chloride-vinylidene chloride copolymer, vinyl chloride-acrylonitrile copolymer,
Vinyl-based polymers or copolymers such as ethylene-vinyl alcohol copolymer, chlorinated polyvinyl chloride, ethylene-vinyl chloride copolymer, ethylene-vinyl acetate copolymer, nitrocellulose, cellulose acetate propionate, cellulose Cellulose derivatives such as acetate butyrate resin, copolymers of maleic acid and / or acrylic acid, acrylonitrile-styrene copolymers, chlorinated polyethylene, acrylonitrile-chlorinated polyethylene-styrene copolymers, methylmethacrylate-butadiene-styrene copolymers Polymer, acrylic resin, polyvinyl acetal resin, polyvinyl butyral resin, polyester polyurethane resin, polyether polyurethane resin, polycarbonate polyurethane resin, polyester resin, polyether Fat, polyamide resins, styrene -
Examples thereof include rubber-based resins such as butadiene resin and butadiene-acrylonitrile resin, silicone-based resin, and fluorine-based resin.

The thermoplastic resin has a Tg of -40 ° C to 150 ° C.
C., preferably 60.degree. C. to 120.degree. C., and the weight average molecular weight is preferably 5,000 to 300,000, more preferably 10,000 to 200,000.

The radiation-curable resin is a resin which is cured by radiation such as electron beam and ultraviolet rays, and examples thereof include maleic anhydride type, urethane acryl type, ether acryl type and epoxy acryl type.

Examples of thermosetting resins and other reactive resins include phenol resins, amino resins, epoxy resins, polyurethane-based curable resins, urea resins, alkyd resins, and silicone-based curable resins.

The binders listed above may have a polar group in the molecule. The polar group is an epoxy group, -C
_{OOM, -OH, -NR 2, -NR} 3 X, -SO 3 M, -
_{OSO 3 M, -PO 3 M 2} , -OPO 3 M (M each hydrogen, an alkali metal, an ammonium, X is a counter ion to form a quaternary ammonium salt, R represents each represent hydrogen, an alkyl group.) And so on.

A hydrophilic binder can also be used as the binder of the magnetic recording layer of the present invention.

The hydrophilic binder usable in the present invention is, for example, Research Disclosure No. 1764.
Examples thereof include water-soluble polymers, cellulose ethers, latex polymers and water-soluble polyesters described on pages 3, 26, and No. 18716, page 651.

As the water-soluble polymer, gelatin, gelatin derivative, casein, agar, sodium alginate, starch, polyvinyl alcohol, acrylic acid type copolymer,
Examples thereof include maleic anhydride copolymers, cellulose ethers such as carboxymethyl cellulose and hydroxyethyl cellulose, and latex polymers such as vinyl chloride copolymers, vinylidene chloride copolymers and acrylic ester copolymers. Examples of the latex include polymers, vinyl acetate-based copolymers and butadiene-based copolymers. Of these, gelatin is the most preferable.

The gelatin may be unmodified or modified. Further, a part thereof is colloidal albumin, casein, carboxymethyl cellulose, cellulose derivatives such as hydroxyethyl cellulose, agar, sodium alginate, starch derivatives, sugar derivatives such as dextran, synthetic hydrophilic colloids, for example,
It may be replaced with polyvinyl alcohol, poly N-vinylpyrrolidone, an acrylic acid-based copolymer, polyacrylamide or a derivative thereof, a partial hydrolyzate, a gelatin derivative or the like.

The hydrophilic binder containing gelatin is preferably hardened. Examples of hardeners that can be used include
Aldehyde compounds such as formaldehyde and glutaraldehyde, ketone compounds such as diacetyl and cyclopentanedione, bis (2-chloroethylurea), 2
-Hydroxy-4,6-dichloro-1,3,5-triazine, U.S. Pat. Nos. 3,288,775, 2,732,303, British Patent 974,723, 1,167,207, etc. Reactive halogen-containing compounds, divinyl sulfone, 5-acetyl-1,3-diacryloylhexahydro-1,3,5-triazine, U.S. Pat. Nos. 3,635,718, 3,232,763, and British Patent Compounds having a reactive olefin described in 994,869, etc., N-hydroxymethylphthalimide, US Pat. Nos. 2,732,316, 2,586,1
N-methylol compounds described in 68, etc., isocyanates described in US Pat. No. 3,103,437, US Pat. No. 3,017,280,
2,983,611 and other aziridine compounds, U.S. Pat.No. 2,725,294, and 2,725,295
Acid derivatives described in U.S. Pat.
Examples thereof include epoxy compounds described in 3,091,537 and halogen carboxaldehydes such as mucochloric acid. Further, it is also possible to use an inorganic hardener, as the inorganic hardener, chrome bright vane, zirconium sulfate, JP-B-56-12853, JP-A-58-32699, Belgian Patent No. 825,726 specification, JP 60-225148 JP, JP 51-126125 JP,
The carboxyl group-activating type hardeners described in JP-B-58-50699, JP-A-52-54427, US Pat. No. 3,321,313 and the like can also be mentioned.

Hardeners are typically 0.
It is used in an amount of 01 to 50% by weight, preferably 0.05 to 30% by weight.

The magnetic powder is dispersed in the binder using a solvent if necessary to form a coating liquid. A ball mill, homomixer, sand mill, or the like can be used to disperse the magnetic powder. In this case, it is preferable to disperse the magnetic particles one by one as much as possible without damaging the magnetic particles.

When forming an optically transparent magnetic recording layer, the binder is preferably used in an amount of 1 to 20 parts by weight per 1 part by weight of the magnetic powder. More preferably, it is 2 to 15 parts by weight with respect to 1 part by weight of the magnetic powder. Further, the solvent is used in such an amount that the coating can be easily performed.

As the method for providing the magnetic recording layer on the support, air doctor coat, blade coat, air knife coat, squeeze coat, impregnation coat, reverse roll coat, transfer roll coat, gravure coat, kiss coat, cast coat, A spray coat can be used. In order to perform multi-stripe coating, these coating heads may be arranged in multiple rows. Specific methods of stripe coating include, for example, JP-A-48-25503, JP-A-48-25504, JP-A-48-98803, and JP-A-50-13803.
7, gazette 52-15533 gazette, gazette 51-3208 gazette, gazette 51-6
No. 239, No. 51-65606, No. 51-140703, Japanese Patent Publication No. 29-4221, U.S. Pat.No. 3,062,181, the same.
The description in the specification of 3,227,165 can be referred to.

Further, a support having a magnetic recording layer may be prepared by co-casting a solution of a binder in which magnetic particles are dispersed and a solution of a polymer for forming a support. in this case,
The binder that disperses the magnetic particles is preferably substantially the same as the polymer for forming the support. The support on which the magnetic recording layer is formed by co-casting may be stretched in order to satisfy mechanical strength, dimensional stability and the like.

In order to firmly adhere these magnetic recording layers to the support, an undercoat layer may be provided on the support, and the support may be subjected to chemical treatment, mechanical treatment, corona discharge treatment,
Flame treatment, ultraviolet treatment, high frequency treatment, glow discharge treatment,
Surface activation treatment such as active plasma treatment, laser treatment, concentrated acid treatment, or ozone oxidation treatment may be performed. Furthermore, an undercoat layer may be provided after the surface activation treatment.

The thickness of the magnetic recording layer is preferably 0.05 to 10 μm, more preferably 0.1 to 5 μm, and further preferably 0.1.
It is 5 to 3 μm.

Various additives such as an antistatic agent are added to the coating liquid for forming the magnetic recording layer in order to provide the magnetic recording layer with functions such as antistatic property, antiadhesive property, and improved friction and abrasion characteristics. can do. In addition, in addition to the coating liquid, for example, a plasticizer for giving flexibility to the magnetic recording layer, a dispersant for aiding dispersion of the magnetic substance in the coating liquid, and for preventing clogging of the magnetic head. An abrasive can be added to the. The above-mentioned functions such as antistatic, adhesion prevention, improvement of friction / polishing characteristics, and prevention of clogging of the magnetic head may be provided by providing these functional layers separately from the magnetic recording layer. If necessary, a protective layer adjacent to the magnetic recording layer may be provided to improve scratch resistance. When the magnetic recording layer is provided in a stripe shape, a transparent polymer layer containing no magnetic material may be provided thereon to eliminate the step due to the magnetic recording layer. In this case, the transparent polymer layer may have various functions described above.

Examples of the abrasive include non-magnetic inorganic powders having a Mohs hardness of 5 or more, preferably 6 or more. Specifically, aluminum oxide (α-alumina, γ-alumina, corundum, etc.), Examples thereof include chromium oxide (Cr ₂ O ₃ ), iron oxide (α-Fe ₂ O ₃ ), oxides such as silicon dioxide and titanium dioxide, carbides such as silicon carbide and titanium carbide, and fine powder such as diamond. The average particle size of these is preferably 0.05 to 1.0 μm, and can be added in the range of 0.5 to 200 parts by weight with respect to 100 parts by weight of the magnetic powder.

After providing the magnetic recording layer, calendering is performed on the layer to improve smoothness, and S / N of magnetic output is improved.
It is also possible to improve the ratio. In this case, it is preferable to apply the silver halide photographic light-sensitive layer after the calendering treatment.

In the present invention, various supports can be used. As the support that can be used, a film of polyester such as polyethylene terephthalate or polyethylene naphthalate, a cellulose triacetate film, a cellulose diacetate film, a polycarbonate film, a polystyrene film, a polyolefin film, a reaction of pyromellitic acid or its anhydride with a diamine, etc. The obtained polyimide film, polyethylene laminated paper, etc. can be mentioned.

The polyester support is not particularly limited, but aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, phthalic acid and naphthalenedicarboxylic acid, and ethylene glycol, 1,3-propanediol, 1,4-
Examples thereof include condensation polymers with alkylene glycols such as butanediol, such as polyethylene terephthalate, polyethylene-2,6-dinaphthalate, polypropylene terephthalate, polybutylene terephthalate, and copolymers thereof.

In particular, from the curl recovery property after development processing, JP-A 1-244446, 1-291248, 1-298350, 2-89045, 2-93641, Ibid 2-181749
It is preferable to use a polyester having a high water content as shown in JP-A Nos. 2-214852 and 2-291135.

These polyesters may have a polar group and other substituents.

The support in the present invention is preferably polyethylene terephthalate or polyethylene naphthalate.

The above polyester has an area ratio in order to satisfy the mechanical strength and dimensional stability of the film support.
Stretching is preferably performed in the range of 4 to 16 times.

The support of the present invention includes a matting agent, an antistatic agent, a surfactant, a stabilizer, a dispersant, a plasticizer, an ultraviolet absorber, a conductive substance, a tackifier, a softening agent and a fluidity imparting agent. , Thickeners, antioxidants and the like can be added.

The support is used for the purpose of neutralizing the tint of the minimum density portion, preventing the light piping phenomenon (fogging) that occurs when light enters the film coated with the photographic emulsion layer from the edge, and preventing halation. Dyes can be included.

The type of dye used is not particularly limited, but when a polyester film is used as a support,
In the film forming process, those having excellent heat resistance are preferable, for example,
Examples include anthraquinone-based chemical dyes. Also, as the color tone, if the purpose is to prevent light piping,
Gray dyeing is preferable as seen in general light-sensitive materials. As the dye, one kind or a mixture of two or more kinds may be used. The target can be achieved by using dyes such as Diaresin manufactured by Mitsubishi Kasei Co., Ltd. and MACROLEX manufactured by Bayer Co. alone or in an appropriate mixture.

Next, the lubricant represented by the following general formula of the present invention will be explained.

[0057]

[Chemical 3] [In the formula, R ₁ represents a saturated or unsaturated aliphatic hydrocarbon group having 11 or more carbon atoms, R ₂ represents an -OM group (M represents an alkali metal), an -OH group, an -NH ₂ group. Or -OR ₃
A group (R ₃ represents a saturated or unsaturated aliphatic hydrocarbon group having 12 or more carbon atoms). In order for the lubricant represented by the above general formula to have good slipperiness, R ₁ is preferably a saturated or unsaturated aliphatic hydrocarbon group having 16 or more carbon atoms. Further, the saturated or unsaturated aliphatic hydrocarbon group is preferably an alkyl group or an alkenyl group.

The saturated or unsaturated aliphatic hydrocarbon group represented by R ₃ is preferably an alkyl group or an alkenyl group.

As the lubricant, a fatty acid having 12 or more carbon atoms or its alkali metal salt is preferable.

The lubricant represented by the above general formula may be a single compound or a mixture thereof. Also,
The lubricant represented by the general formula may be used as a mixture containing the lubricant represented by the general formula.

Specific examples of the lubricant represented by the general formula which can be used as the lubricant in the present invention and the mixture containing the same include higher fatty acids such as behenic acid, pentacosanoic acid and stearic acid, and alkali metal salts thereof. Examples thereof include higher fatty acid amides such as stearic acid amide, carnauba wax, montan wax, and beeswax. Moreover, the following can be mentioned.

[0062]

[Chemical 4]

When the lubricant of the present invention is contained in a photographic light-sensitive material, the position of the lubricant is not particularly limited such as the silver halide emulsion layer side or the transparent magnetic recording layer side, but a layer on the transparent magnetic recording layer side, for example, a magnetic layer. It is preferably contained in the recording layer, the intermediate layer and the protective layer. The layer containing the lubricant of the present invention is preferably the outermost layer on the silver halide emulsion layer side or the outermost layer on the transparent magnetic recording layer side, and the outermost layer or transparent magnetic layer on the silver halide emulsion layer side. You may make it contain by further providing the overcoat layer which has the lubricant of this invention on the outermost layer of the recording layer side.

The method of incorporating the lubricant of the present invention into a photographic light-sensitive material is not particularly limited, but the lubricant of the present invention may be used in combination with alcohols such as methanol and ethanol, ketones such as acetone and methyl ethyl ketone, and methylene. Halogenated hydrocarbons such as chloride and carbon tetrachloride,
It is dissolved in a solvent such as diethyl ether or dioxane, a solvent such as benzene or toluene to obtain a solution, and is dispersed in water or a mixed solvent of water and a water-miscible organic solvent to form a coating liquid for a layer to be contained as a dispersion liquid. They may be added and applied, or these solutions or dispersions may be overcoated.

In order to disperse the lubricant of the present invention in water or a mixed solvent of water and a water-miscible organic solvent, the lubricant of the present invention is preliminarily heated and melted, and this is mixed with water or water and a water-miscible organic solvent. It may be added to a mixed solvent with, or
The lubricant of the present invention is previously dissolved in a water-immiscible organic solvent (for example, hydrocarbons such as toluene) to form a solution, and then added to water or a mixed solvent of water and a water-miscible organic solvent. May be. The water-immiscible organic solvent can be volatilized and removed after the dispersion.

The water-miscible organic solvent is a solvent represented by alcohols such as methanol and ethanol and ketones such as acetone, and is a solvent which can be mixed with water at a free ratio.

Dispersing methods are known, and these known methods for dispersing the lubricant of the present invention are described in, for example, "Techniques for Emulsification / Solubilization" by Tsuji Recommendation (Kogaku Tosho Co., Ltd.). Any method can be used.

The lubricant of the present invention in the dispersion is preferably dispersed as particles having a diameter of about 1 to 1000 nm.

The lubricant of the present invention can be used in combination with a binder. Examples of the binder that can be used in combination include, for example, polymers or copolymers of polystyrene, polymethylmethacrylate, polyvinylidene chloride, boriacrylonitrile and vinyl polyacetate, cellulose diacetate, cellulose triacetate, cellulose nitrate, ethyl cellulose, and cellulose propio. Examples thereof include cellulose derivatives such as nates, acetals such as polyvinyl formal, polyvinyl acetal, polyvinyl benzal, and gelatin.

The lubricant of the present invention can be used in combination with other lubricants as long as the effects of the present invention are not impaired. Lubricants that can be used in combination include, for example, Research Disclosure (hereinafter abbreviated as RD) No. 17643, page 27, No. l8716, page 650, and No. 308119, page 1006, XII. Mention may be made of the lubricants mentioned.

The lubricant of the present invention is 1 m² 0.002-0.5g per
It is preferable to use it with a coating amount of 0.01 to 0.3 g
More preferably,

In the present invention, the amount of cyclohexane extracted from the lubricant from the photographic light-sensitive material must be 0.005 to 0.1 g / m ² .

The extraction amount of cyclohexane in the present invention is 1 liter of photographic light-sensitive material per 300 ml of cyclohexane.
It refers to the amount of the lubricant of the present invention extracted when immersed for a minute. The amount of cyclohexane extracted is, for example, by dipping a photographic light-sensitive material cut into a certain size in 300 ml of cyclohexane for 1 minute to extract the lubricant. After concentrating the obtained cyclohexane containing the extracted lubricant, the residue was quantitatively analyzed using gas chromatography or liquid chromatography, and the amount of extraction was determined from the detected peak area,
It can be determined by calculating the extraction amount per 1 m ^{2 of the} photographic light-sensitive material from the obtained extraction amount.

The amount of cyclohexane extracted from the photographic light-sensitive material depends on the type of lubricant, the composition of the lubricant-containing layer, the composition of the layers provided above and below the lubricant-containing layer, and so on. Type, composition of lubricant-containing layer,
Experiment by changing the composition of the layers provided above and below the lubricant-containing layer, and appropriately select the type of lubricant, the composition of the lubricant-containing layer, the composition of the layers provided above and below the lubricant-containing layer, etc. The amount of cyclohexane extracted is 0.005-0.1
It can be in the range of g / m ² .

In the photographic light-sensitive material of the present invention, it is preferable to provide a layer containing an antistatic agent on the transparent magnetic recording layer side. Examples of the antistatic agent used include Japanese Patent Publication Sho
Ionene type polymers as disclosed in JP-A-57-56059,
Examples thereof include an alumina sol having an electrolyte as disclosed in JP-B-57-12979, and crystalline metal oxide fine particles as disclosed in JP-A-56-143431.

The layer containing the lubricant of the present invention or the layer containing the antistatic agent may further contain various additives such as matting agents and dyes, if necessary.

As the matting agent, fine particles of silicon dioxide having an average particle diameter of 0.01 to 10 μm are preferable. Further, the above-mentioned various additives are, for example, Research Disclosure, Vol. 176, 22-3.
The additives described on page 1 (December 1978) can be referred to.

The photographic light-sensitive material having the magnetic recording layer of the present invention includes a black-and-white light-sensitive material, a color negative light-sensitive material, a color paper light-sensitive material, a color reversal light-sensitive material, a movie light-sensitive material, and an X-ray. Any photosensitive material such as a photosensitive material, a photosensitive material for printing, a photosensitive material for microphotography, etc. may be used.

Any silver halide can be used as the silver halide of the silver halide emulsion, for example, silver bromide, silver iodide, silver chloride, silver iodobromide, silver chlorobromide, silver chloroiodide. , Silver chloroiodobromide, which is appropriately selected depending on the required performance, but silver bromide and silver iodobromide are preferred from the viewpoint of obtaining high sensitivity.

The silver halide grain contained in the silver halide photographic emulsion to be used may be a grain in which a latent image is mainly formed on the surface, or may be a grain in which a latent image is mainly formed inside the grain. .

The silver halide grains may have a regular crystal form such as a cube, octahedron or tetradecahedron,
It may have an irregular crystal shape such as a sphere or a plate. In these particles, (100) plane and (111) plane
Any surface ratio can be used. Further, it may have a composite form of these crystal forms, and grains of various crystal forms may be mixed, but twin silver halide grains having two parallel twin planes facing each other are preferable. .

A twin is a silver halide crystal having one or more twin planes in one grain. The morphology of twins is classified by Klein and Moiser in the article Photographiesche Correspondents. (Photographishe Korrespondenz)
Volume 99, page 99, volume 100, page 57.

In the present invention, when tabular silver halide grains are used, the average ratio of the diameter of the tabular grains to the thickness (also referred to as the aspect ratio) is preferably less than 5, more preferably 1.1 or more. Less than 4.5, particularly preferably
It is 1.2 or more and less than 4. This average value is obtained by averaging the ratio of diameter to thickness of all tabular grains.

The diameter of the silver halide grain is represented by the diameter corresponding to the circle of the projected area of the silver halide grain (the diameter of the circle having the same projected area as the silver halide grain),
The thickness is preferably 5.0 μm, more preferably 0.2 to 4.0 μm, and particularly preferably 0.3 to 3.0 μm.

As the silver halide photographic emulsion, any one such as a polydisperse emulsion having a wide grain size distribution and a monodisperse emulsion having a narrow grain size distribution can be used, but a monodisperse emulsion is preferable.

Here, as the monodisperse silver halide emulsion,
It is preferable that the weight of silver halide contained in the grain size range of ± 20% around the average grain size r is 60% or more, more preferably 70% or more, and still more preferably the weight of all silver halide grains. 80% or more.

[0087] Here, the average particle diameter r is the product ni × ri ³ of the frequency ni and ri ³ particles having a particle size ri is defined as the particle size ri when the maximum.

Particle size r here i is a silver halide grain
Convert the projected image of the silver halide grains of the child into a circular image of the same area.
It is the diameter when

Particle size r i is, for example, an electron microscope of the particles.
The image is magnified 10,000 to 70,000 times, and the particles are printed directly on the print.
It can be obtained by measuring the diameter or the area at the time of projection.
Yes (the number of particles measured must be 1,000 or more indiscriminately)
And ).

Particularly preferred highly monodisperse emulsions of this invention are:

[0091]

[Equation 1] When the breadth of distribution is defined by, the breadth of the distribution is 20%
It is the following, and more preferably 15% or less.

The average particle size and standard deviation are obtained from the particle size ri defined above.

In the present invention, when silver iodobromide is used as the silver halide, the content of the silver iodide is 4 mol% or more and 15 mol or more as an average silver iodide content in the entire silver halide grains. % Or less, more preferably 5 mol% or more and 12 mol% or less, and particularly preferably 6 mol% or more and 10 mol% or less.

The silver halide grains contained in the silver halide photographic emulsion are preferably so-called core / shell type grains in which silver iodide is concentrated.

The core / shell type particles are particles composed of a core that serves as a core and a shell that covers the core, and the shell is formed by one layer or more layers. The silver iodide contents of the core and the shell are preferably different from each other, and it is particularly preferable that the silver iodide contents of the core portions are maximized.

The silver iodide content of the core is preferably 10 mol% or more, more preferably 20 mol% or more, still more preferably 25 mol% or more. The silver iodide content of the outermost shell of the above shells, that is, the shell usually forming the outermost surface layer is preferably 5 mol% or less, more preferably 0 to 2 mol%. The proportion of the core is preferably 2 to 60% of the total volume of the particles, and more preferably 5 to 50%.

Regarding the silver halide grains contained in the silver halide photographic emulsion, an aqueous solution containing a protective colloid and seed grains are preliminarily present in a reaction vessel, and silver ions, halogen ions or silver halide fine grains are supplied if necessary. Can be obtained by crystal growth of seed particles. Here, the seed particles can be prepared by a single jet method or a controlled double jet method well known in the art. The halogen composition of the seed grains is arbitrary, silver bromide,
It may be any of silver iodide, silver chloride, silver iodobromide, silver chlorobromide, silver chloroiodobromide, and silver chloroiodobromide, with silver bromide and silver iodobromide being preferred.

When seed grains are used for preparing a silver halide emulsion, the seed grains may have a regular crystal form such as a cube, octahedron or tetradecahedron, or may have a spherical or plate shape. It may have an irregular crystal form. In these particles, any ratio of (100) plane to (111) plane can be used. Further, it may have a composite form of these crystal forms, and particles of various crystal forms may be mixed,
It is preferable to use the monodisperse spherical seed particles described in Japanese Patent Application No. 2-408178.

The silver halide photographic emulsion can be produced by any of the acidic method, the neutral method and the ammonia method.

In the production of silver halide photographic emulsion,
The halide ion and the silver ion may be mixed at the same time, or the other may be mixed in the presence of either one. Also,
It may be grown by adding halide ions and silver ions successively or simultaneously while controlling the pH and pAg in the mixing vessel while taking into consideration the critical growth rate of silver halide crystals. The conversion method may be used to change the silver halide composition of the grains at any step of the silver halide formation. Further, halide ions and silver ions may be supplied as fine silver halide particles into the mixing vessel.

In the production of silver halide photographic emulsion,
Known silver halide solvents such as ammonia, thioether, thiourea and the like can be present.

The silver halide grains contained in the silver halide photographic emulsion are cadmium salt, zinc salt, lead salt, thallium salt, iridium salt (including complex salt), in the process of forming grains and / or in the process of growing grains. Rhodium salt (including complex salt)
And at least one selected from iron salts (including complex salts) can be used to add a metal ion so that these metal elements can be contained inside and / or on the surface of the particles, and the particles are placed in a suitable reducing atmosphere. By this, reduction sensitization nuclei can be imparted to the inside of the grain and / or the surface of the grain.

In the silver halide photographic emulsion, unnecessary soluble salts may be removed after the growth of the silver halide grains is completed, or may be contained. When removing the salts, Research Disclosure (Research D
isclosure, hereinafter abbreviated as RD. ) It can be carried out based on the method described in No. 17643, Section II.

Conditions other than those mentioned above in the production of the silver halide photographic emulsion according to the present invention are described in JP-A-61-6643.
No. 61, No. 61-14630, No. 61-112142, No. 62-
No. 157024, No. 62-18556, No. 63-92942,
63-151618, 63-l63451, 63-220238.
The optimum conditions can be selected with reference to known methods such as Japanese Patent Publication No. 63-311244 and Japanese Patent Publication No. 63-311244.

The silver halide emulsion can be subjected to physical ripening, chemical ripening and spectral sensitization. The additives used in such a process are RD No. 17643, RD No. 18716 and RD No. 308119 (hereinafter referred to as RDl7643, RDl8716 and RDl8716, respectively).
Abbreviated as 308119. )It is described in. Table 1 shows the locations.

[0106]

[Table 1] When the photographic light-sensitive material of the present invention is a color photographic light-sensitive material, photographic additives that can be used are described in the above RD. Table 2 shows the relevant locations.

[0107]

[Table 2] The hardener is used in an amount of 1 to 20% by weight, preferably 2 to 10% by weight, based on dry-processed gelatin.

When the photographic light-sensitive material of the present invention is a color photographic light-sensitive material, various couplers can be used, specific examples of which are described in the following RDl7643 and RD308119. Table 3 shows the related description.

[0109]

[Table 3] Further, these additives can be added to the photographic photosensitive layer by the dispersion method described in RD308119, page 1007, item XIV.

For the color photographic light-sensitive material, the above-mentioned RD308119 is used.
An auxiliary layer such as a filter layer or an intermediate layer described in the section VII-K can be provided.

In the case of constituting a color photographic light-sensitive material, various layer constitutions such as the forward layer, the reverse layer and the unit constitution described in the above-mentioned item RD308119 VII-K can be adopted.

An undercoat layer may be provided on the support in order to firmly adhere the photosensitive silver halide emulsion layer, the filter layer and the conductive layer to the support. Surface activation treatment such as mechanical treatment, corona discharge treatment, flame treatment, ultraviolet treatment, high frequency treatment, glow discharge treatment, active plasma treatment, laser treatment, concentrated acid treatment and ozone oxidation treatment may be performed. Further, an undercoat layer may be provided after the surface activation treatment, and a photographic emulsion layer or the like may be coated thereon.

To develop the silver halide photographic light-sensitive material of the present invention, for example, T. H. James, Theory of the Photographic Process 4th Edition (Th
e Theory of The Photografic Process Forth Editio
n) Pages 291-334 and the Journal of the American Chemical Society (JournaI of the Ame
rican Chemical Society) Vol. 73, p. 3,100 (1951)
The developers known per se described in 1) can be used. The color photographic light-sensitive material is RD1764 described above.
3 Development can be carried out by a usual method described on pages 28 to 29, RDl 8716 page 615 and RD308119 XIX.

[0114]

EXAMPLES The present invention will be described in more detail with reference to examples below, but the embodiments of the present invention are not limited thereto. Example 1 A triacetyl cellulose film (T having a base thickness of 110 μm)
The following conductive layer coating solution was applied onto one surface of AC) at 20 ml / m ² and dried at 80 ° C. for 5 minutes to form a conductive layer (first layer). <Coating liquid for conductive layer>

[0115]

[Chemical 5] 35 g SiO ₂ fine particles (average particle diameter 3.0 μm) 0.1 g ethylene glycol 270 ml methanol 600 ml acetone 4000 ml Further, the following magnetic recording layer composition was mixed on the first layer with acetone-ethyl acetate (50:50). The coating solution dispersed in a solvent was applied using a sand mill to form a magnetic recording layer (second layer). <Composition for magnetic recording layer> Magnetic powder Fe ₂ O ₃ (Hc: 330 Oe, BET: 32 m ² / g) (Coating amount is shown in Table 4) Diacetyl cellulose (DAC) (Coating amount is shown in Table 4) ) Toluene-containing lubricants shown in Table 4 on the second layer.
The coating solution dissolved in a mixed solvent of ethyl acetate (50:50) is shown in Table 4.
The lubricant layer (3rd layer)
Layers) were formed.

Then, after the corona discharge treatment, the following photographic constituent layers were sequentially formed on the surface of the support opposite to the surface provided with the first to third layers to form a multilayer color photographic light-sensitive material (sample). 1-12) were prepared.

Unless otherwise specified, the quantities shown in the photographic constituent layers shown below are expressed in quantities per 1 m ² . Also, silver halide and colloidal silver are shown in terms of silver.

<Photographic Constituent Layer> First Layer: Antihalation Layer (HC) Black Colloidal Silver 0.15 g UV Absorber (UV-1) 0.20 g Colored Cyan Coupler (CC-1) 0.02 g High Boiling Solvent (Oil-1) ) 0.20 g High boiling point solvent (Oil-2) 0.20 g Gelatin 1.6 g Second layer; Intermediate layer (IL-1) Gelatin 1.3 g Third layer; Low sensitivity red-sensitive emulsion layer (RL) Silver iodobromide emulsion (Average grain size 0.3 μm) (Average iodine content 2.0 mol%) 0.4 g Silver iodobromide emulsion (Average grain size 0.4 μm) (Average iodine content 8.0 mol%) 0.3 g Sensitizing dye (S-1) 3.2 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (S-2) 3.2 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (S-3) 0.2 × 10 ^-4 (mol / silver 1 mol) ) Cyan coupler (C-1) 0.50 g Cyan coupler (C-2) 0.13 g Colored cyan coupler (CC-1) 0.07 g DIR compound ( D-1) 0.006 g DIR compound (D-2) 0.01 g High boiling point solvent (Oil-1) 0.55 g Gelatin 1.0 g

Fourth layer: high-sensitivity red-sensitive emulsion layer (RH) Silver iodobromide emulsion (average grain size 0.7 μm) (average iodine content 7.5 mol%) 0.9 g Sensitizing dye (S-1) 1.7 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (S-2) 1.6 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (S-3) 0.1 × 10 ^-4 (mol / silver 1 mol) ) Cyan coupler (C-2) 0.23 g Colored cyan coupler (CC-1) 0.03 g DIR compound (D-2) 0.02 g High boiling point solvent (Oil-1) 0.25 g Gelatin 1.0 g Fifth layer; Intermediate layer (IL -2) Gelatin 0.8 g Sixth layer; low-sensitivity green-sensitive emulsion layer (GL) Silver iodobromide emulsion (average grain size 0.4 μm) (Average iodine content 8.0 mol%) 0.6 g Silver iodobromide emulsion ( Average particle size 0.3 μm) (Average iodine content 2.0 mol%) 0.2 g Sensitizing dye (S-4) 6.7 × 10 ⁻⁴ (mol / silver 1 mol) Sensitizing dye (S-5) 0.8 × 10 ⁻⁴ (Mol / silver 1 Magenta coupler (M-1) 0.17 g Magenta coupler (M-2) 0.43 g Colored magenta coupler (CM-1) 0.10 g DIR compound (D-3) 0.02 g High boiling solvent (Oil-2) 0.7 g Gelatin 1.0 g

Seventh layer: high-sensitivity green-sensitive emulsion layer (GH) Silver iodobromide emulsion (average grain size 0.7 μm) (average iodine content 7.5 mol%) 0.9 g Sensitizing dye (S-6) 1.1 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (S-7) 2.0 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (S-8) 0.3 × 10 ^-4 (mol / silver 1 mol) ) Magenta coupler (M-1) 0.30 g Magenta coupler (M-2) 0.13 g Colored magenta coupler (CM-1) 0.04 g DIR compound (D-3) 0.004 g High boiling point solvent (Oil-2) 0.35 g Gelatin 1.0 g 8th layer: Yellow filter layer (YC) Yellow colloidal silver 0.1 g Additive (HS-1) 0.07 g Additive (HS-2) 0.07 g Additive (SC-1) 0.12 g High boiling point solvent (Oil-2) ) 0.15g Gelatin 1.0g 9th layer; low-sensitivity blue-sensitive emulsion layer (BL) Silver iodobromide emulsion (average grain size 0.3 µm) (average De content 2.0 mol%) 0.25 g Silver iodobromide emulsion (average particle size 0.4 .mu.m) (average iodide content of 8.0 mol%) 0.25 g Sensitizing dye (S-9) 5.8 × 10 -4 ( mol / silver Mol) Yellow coupler (Y-1) 0.6 g Yellow coupler (Y-2) 0.32 g DIR compound (D-1) 0.003 g DIR compound (D-2) 0.006 g High boiling solvent (Oil-2) 0.18 g Gelatin 1.3 g

10th layer: High-sensitivity blue-sensitive emulsion layer (BH) Silver iodobromide emulsion (average grain size 0.8 μm) (average iodine content 8.5 mol%) 0.5 g Sensitizing dye (S-10) 3 × 10 ^-4 (mol / silver 1 mol) Sensitizing dye (S-11) 1.2 × 10 ^-4 (mol / silver 1 mol) Yellow coupler (Y-1) 0.18 g Yellow coupler (Y-2) 0.10 g High Boiling point solvent (Oil-2) 0.05 g Gelatin 1.0 g 11th layer; 1st protective layer (PRO-1) Silver iodobromide (average particle size 0.08 μm) 0.3 g UV absorber (UV-1) 0.07 g UV absorption Agent (UV-2) 0.10 g Additive (HS-1) 0.2 g Additive (HS-2) 0.1 g High boiling point solvent (Oil-1) 0.07 g High boiling point solvent (Oil-3) 0.07 g Gelatin 0.8 g 12 layers; second protective layer (PRO-2) Compound A 0.04 g Compound B 0.004 g Polymethylmethacrylate (average particle size 3 μm) 0.02 g Methylmeta Copolymer of acrylate: ethyl methacrylate: methacrylic acid = 3: 3: 4 (weight ratio) (average particle size 3 μm) 0.13 g Gelatin 1.0 g-Preparation of silver iodobromide emulsion-iodine used in the 10th layer The silver bromide emulsion was prepared by the following method.

A silver iodobromide emulsion was prepared by the double jet method using monodispersed silver iodobromide grains (silver iodobromide content 2 mol%) having an average grain size of 0.33 μm as seed crystals.

A solution (G-1) having the following composition was treated at a temperature of 70 ° C. and pA.
While maintaining g7.8 and pH 7.0, 0.34 mol of seed emulsion was added while stirring well.

(Formation of Internal High Iodity Phase-Core Phase) Then, a solution (H-1) having the following composition and a solution (S-
1) and 1) were added over 86 minutes at an accelerated flow rate (the flow rate at the end was 3.6 times the initial flow rate) while maintaining a flow rate ratio of 1: 1.

(Formation of External High Iodity Phase-Shell Phase) Subsequently, while maintaining pAg10.1 and pH 6.0, (H-2) and (S-
2) and were added at a flow rate accelerated by a flow rate ratio of 1: 1 (the flow rate at the end was 5.2 times the initial flow rate) over 65 minutes.

The pAg and pH during grain formation were controlled using an aqueous potassium bromide solution and a 56% aqueous acetic acid solution. After the particles were formed, they were washed with water by a conventional flocculation method, and then gelatin was added and redispersed, and pH and pAg were adjusted to 5.8 and 8.0 at 40 ° C., respectively.

The obtained emulsion was a monodisperse emulsion containing octahedral silver iodobromide grains having an average grain size of 0.80 μm, a distribution width of 12.4% and a silver iodide content of 8.5 mol%.

<G-1> Solution Ocein gelatin 100.0 g 10% by weight ethanol solution of -1 of the following compound 25.0 ml 28% aqueous ammonia solution 440.0 ml 56% acetic acid aqueous solution 660.0 ml Finish with water 5000.0 ml Compound-1: polyiso Propyleneoxy / polyethyleneoxy / sodium disuccinate

<H-1> Solution Ocein gelatin 82.4 g Potassium bromide 151.6 g Potassium iodide 90.6 g Finish with water 1030.5 ml

<S-1> solution Silver nitrate 309.2 g 28% aqueous ammonia solution Equivalent Finish with water 1030.5 ml <H-2> solution Ocein gelatin 302.1 g Potassium bromide 770.0 g Potassium iodide 33.2 g Finish with water 3776.8 ml

<S-2> Solution Silver nitrate 1133.0 g 28% aqueous ammonia solution Equivalent to finish with water 3776.8 ml Silver iodobromide emulsions used in layers other than the 10th layer were also treated in the same manner as described above, and the average grain size of seed crystals, Temperature, pAg, pH, flow rate,
The emulsions having different average grain sizes and silver iodobromide contents were prepared by changing the addition time and the halide composition.

All were core / shell type monodisperse emulsions having a distribution of 20% or less. Each emulsion was subjected to optimal chemical ripening in the presence of sodium thiosulfate, chloroauric acid and ammonium thiocyanate, sensitizing dye, 4-hydroxy-6.
-Methyl-1,3,3a, 7-tetrazaindene, 1-
Phenyl-5-mercaptotetrazole was added.

The above-mentioned light-sensitive material further comprises the compound SU.
-1, SU-2, viscosity modifier, hardener H-1, H-2,
Stabilizer ST-1, antifoggant AF-1, AF-2 (heavy
Weight average molecular weight of 10,000 and 1,100,000), dyeing
AI-1 and AI-2 and compound DI-1 (9.4 mg /
m² ) Is included.

The structure of each compound used for forming the silver halide photographic light-sensitive material according to the present invention is shown below.

[0135]

[Chemical 6]

[0136]

[Chemical 7]

[0137]

[Chemical 8]

[0138]

[Chemical 9]

[0139]

[Chemical 10]

[0140]

[Chemical 11]

[0141]

[Chemical 12]

[0142]

[Chemical 13]

[0143]

[Chemical 14]

The obtained sample was evaluated as follows. The results are shown in Table 4. <Extracted amount of cyclohexane>
Soak in 1 ml for 1 minute to extract the lubricant. After concentrating the obtained cyclohexane containing the extracted lubricant, the residue was quantitatively analyzed using gas chromatography or liquid chromatography, the amount of extraction was determined from the detection peak area, and the amount of extraction per 1 m ^{2 of the} sample was obtained. Was calculated.

<Magnetic Reproduction Output> Each of the prepared samples was cut as shown in FIG. 1 and packed in a cartridge to prepare a film having a width of 35 mm and 24 shots. A signal was input to the track C0 shown in FIG. 1 of the film by the signal input reproduction method disclosed in WO 90/04205, and the input signal was reproduced. The average of the reproduction output of track C0 was calculated, and sample 1
Evaluation was made by a relative value with the average of the reproduction output of the track C0 of 0 being 100.

In FIG. 1, 101 is perforation, C0 to C3, and F00 to F29 are tracks for recording magnetic information.

<Dynamic Friction Coefficient> The sample was conditioned at 25 ° C. and 50% for 1 day, and then JIS stainless steel balls (5 mmφ) were used.
It was measured by the method.

<Scratch resistance> A stainless steel ball (5 mmφ) was applied to the sample with a friction coefficient tester under a load of 50 g to give 10 cm.
Sliding was repeated 1000 times at a speed of / sec. Then, the degree of scratches is visually observed and evaluated as follows. Rank Degree of scratch A No scratch. B Although there was a sliding mark, there was no decrease in output on the magnetic recording / reproducing device. C Has scratches. Output less than 50% with magnetic recording / reproducing device. D Membrane peeling.

[0149]

[Table 4]

Example 2 In Sample 1, the magnetic powder Fe in the second layer (magnetic recording layer) was used.
Coated γ instead of ₂ O ₃ (Hc: 330 Oe, BET: 32 m ² / g)
Using —Fe ₂ O ₃ (Hc700Oe, BET42m ² / g), the coating amount of magnetic powder, the coating amount of diacetyl cellulose (DAC),
Samples 13 to 23 were prepared in the same manner as Sample 1 except that the kind of lubricant and the coating amount of lubricant were changed as shown in Table 5. With respect to the created samples 13 to 23, the extraction amount of cyclohexane, the magnetic reproduction output, the dynamic friction coefficient, and the scratch resistance were evaluated in the same manner as in Example 1. The results are shown in Table 5.

[0151]

[Table 5]

Example 3 In Sample 1, the coating amount of magnetic powder and the coating amount of diacetyl cellulose (DAC) in the second layer (magnetic recording layer) are shown in Table 6.
Sample Nos. 24 to 24 were prepared in the same manner as Sample 1 except that the lubricant shown in Table 6 was added in the coating amount shown in Table 6 and the third layer (lubricant layer) was not provided. 31 was created. For the created samples 24 to 31, the extraction amount of cyclohexane, the magnetic reproduction output, and
The dynamic friction coefficient and scratch resistance were evaluated. The results are shown in Table 6.

[0153]

[Table 6]

[0154]

According to the present invention, the lubricant is not adsorbed on the surface of the magnetic powder, and the added lubricant can effectively function as a lubricant, which is excellent for a photographic light-sensitive material having a transparent magnetic recording layer. It can provide slipperiness and scratch resistance.

[Brief description of drawings]

FIG. 1 is an explanatory diagram illustrating a track on which magnetic information is recorded.

Claims (5)

[Claims] 1. A photographic light-sensitive material having at least one silver halide emulsion layer on one side of a support and a transparent magnetic recording layer on the other side, and a lubricant represented by the following general formula. it was contained, and photographic material, characterized in that the cyclohexane extraction of the lubricant with 0.005~0.1g / m ^2. [Chemical 1] [In the formula, R ₁ represents a saturated or unsaturated aliphatic hydrocarbon group having 11 or more carbon atoms, R ₂ represents an -OM group (M represents an alkali metal), an -OH group, an -NH ₂ group. Or -OR ₃
A group (R ₃ represents a saturated or unsaturated aliphatic hydrocarbon group having 12 or more carbon atoms). ] 2. A photographic light-sensitive material according to claim 1, wherein a lubricant is contained in the transparent magnetic recording layer side. 3. The photographic light-sensitive material according to claim 1, wherein a transparent magnetic recording layer is present as the outermost layer. 4. The content of magnetic powder in the transparent magnetic recording layer is 10 to 70.
4. The photographic light-sensitive material according to claim 1, which is in the range of weight%. 5. The lubricant according to claim 1, wherein the lubricant is a fatty acid having 12 or more carbon atoms or an alkali metal salt thereof.
The photographic light-sensitive material described.