JPH0777760A - Photographic sensitive material having transparent magnetic recording layer - Google Patents

Abstract

PURPOSE:To provide a photographic sensitive material having a magnetic recording layer having satisfactory mechanical strength, kept in close contactness of the magnetic recording layer to a magnetic head, reduced in the generation of error at the time of inputting and reproducing magnetic signal and increased in the reliability of magnetic recording even when a environmental condition is changed. CONSTITUTION:In the photographic sensitive material having at least one layer of a silver halide emulsion layer on one side of a supporting body and the transparent magnetic recording layer on another side of the supporting body, the supporting body is a film formed from a resin composed mainly of a polyester copolymer having at least 1-10mol% aromatic dicarboxylic acid having metal sulfonate group and/or diol having metal sulfonate group and 1-10wt.% polyalkylene glycol.

Description

Detailed Description of the Invention

[0001]

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

[0002]

BACKGROUND OF THE INVENTION For photographic light-sensitive materials, various information on photographic light-sensitive materials such as type / manufacturing number of photographic light-sensitive material, manufacturer's name, emulsion No., etc. 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 completely 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 ferromagnetic material are dispersed is provided on the emulsion surface or the back surface next to the image area, and information such as sound and photographing conditions is provided to the silver halide photographic material. Recording on material is disclosed in JP-A-50-626.
No. 27, No. 49-4503, U.S. Pat.No. 3,243,376, No. 3,220,843, etc., and also on the back surface of the silver halide photographic light-sensitive material, the amount of magnetizable particles, size, etc. Providing a transparent magnetic recording layer having the required transparency by selecting (1) is described in US Pat. Nos. 3,782,947, 4,279,945, and 4,302,523. 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.

The polyethylene terephthalate film has a mechanical strength superior to that of cellulose triacetate and is therefore widely used as a support for photographic light-sensitive materials.

However, when a polyethylene terephthalate film is used as a support for a photographic light-sensitive material having a magnetic recording layer, when it is stored at a high temperature, it has a curl, and the removability of the curl is not sufficient. There is a problem in that the contact with the head is not sufficiently maintained and an error occurs during input and reproduction of a magnetic signal.

Further, as a problem in the case where the magnetic recording layer is provided on the support, a photographic light-sensitive material provided with the magnetic recording layer has a magnetic head in the process of recording and reproducing information. Since there is contact with the magnetic recording layer, the photographic photosensitive material is charged, and there is a problem in that an error occurs at the time of inputting / reproducing a magnetic signal.

[0010]

An object of the present invention is to have sufficient mechanical strength so that the adhesion between the magnetic recording layer and the magnetic head can be sufficiently maintained even if the environmental conditions change. An object of the present invention is to provide a photographic light-sensitive material having a transparent magnetic recording layer in which the occurrence of errors at the time of inputting a magnetic signal and during reproduction is reduced and the reliability of magnetic recording is improved. A second object of the present invention is to provide a photographic light-sensitive material having a transparent magnetic recording layer in which the chargeability of the photographic light-sensitive material is reduced.

[0011]

The above objects can be achieved by the following photographic light-sensitive materials. (1) In 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, the support contains 1 to 10 as a copolymerization component. Film formed from a resin whose main component is an aromatic dicarboxylic acid having a metal sulfonate group and / or a diol having a metal sulfonate group, and a copolyester having at least 1 to 10% by weight of a polyalkylene glycol. A photographic light-sensitive material characterized in that (2) The photographic light-sensitive material as described in (1) above, wherein the polyalkylene glycol is polyethylene glycol. (3) The above (1) or (2), which has at least one conductive layer on the magnetic recording layer side and has a surface resistivity of 1 × 10 ¹¹ Ω / cm or less on the magnetic recording layer side. ) The photographic light-sensitive material described above. (4) The above-mentioned (3), wherein the electrically conductive material of the electrically conductive layer contains an ionic polymer as a main component.
The photographic light-sensitive material described.

The present invention will be described in detail below.

First, the transparent magnetic recording layer will be described.
As the magnetic fine powder used in the magnetic recording layer of the present invention, metal magnetic powder, iron oxide magnetic powder, Co-doped iron oxide magnetic powder, chromium dioxide magnetic powder, and barium ferrite magnetic powder can be used. .

The method for producing these magnetic powders is 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.

As the metal magnetic powder, for example, the metal content is 75% by weight or more, and 80% by weight or more of the metal content 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 these iron oxides is not particularly limited.

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 of magnetic iron oxide dispersed in a binder is transparent to infrared radiation. US Pat.
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 area of the silver halide color photographic material, not only the red area but also the green area and the blue area 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 magnetic powder is 0.001
-3 g / m ² , more preferably 0.01-1 g / m ² , and most preferably 0.2 g / m ² or less.

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 above-mentioned 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, epoxy acryl type and the like.

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

The binders listed above may have polar groups in their molecules. 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 may 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.

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. Inorganic hardeners can also be used, and examples of the inorganic hardeners include chrome alum and zirconium sulfate.
Japanese Patent Publication No. 58-32699, Belgian Patent No. 825,726, Japanese Patent Publication No. 60-225148, Japanese Patent Publication No. 51-126125, Japanese Patent Publication No. 58-50699, Japanese Patent Publication No. 52-54427. The carboxyl group-activating type hardeners described in Japanese Patent Publication No. 3,321,313 and the like can also be mentioned.

Hardeners are typically 0.
It is used in an amount of 01 to 30% by weight, preferably 0.05 to 20% by weight.

The magnetic powder is dispersed in the binder by 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 50 parts by weight based on 1 part by weight of the magnetic powder. More preferably, magnetic powder
It is 2 to 30 parts by weight with respect to 1 part by weight. Further, the solvent is used in such an amount that the coating can be easily performed.

As a 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.

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 the 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, the support may be provided with an undercoat layer, 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 even more preferably 0.1.
It is 5 to 3 μm.

The coating liquid for forming the magnetic recording layer contains various additives such as a lubricant in order to impart functions to the magnetic recording layer such as imparting lubricity, preventing adhesion, and improving friction / abrasive properties. It can be added. 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. Abrasives can be added. Functions such as lubrication, adhesion prevention, improvement of friction / polishing properties, 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 lubricant include silicone oil such as polysiloxane, plastic fine powder such as polyethylene and polytetrafluoroethylene, higher fatty acid, higher fatty acid ester, and fluorocarbon.
These may be used alone or in combination.
These may be added in an amount of 0.2 to 20 parts by weight with respect to 100 parts by weight of the binder.

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

The support of the present invention contains 1 to 1 as a copolymerization component.
Aromatic dicarboxylic acid having 0 mol% metal sulfonate group and / or diol having metal sulfonate group,
And a resin whose main component is a copolyester having at least 1 to 10% by weight of polyalkylene glycol.

The above-mentioned copolyester can be obtained by polycondensing an aromatic dicarboxylic acid, a glycol, an aromatic dicarboxylic acid having a metal sulfonate group and / or a diol having a metal sulfonate group, a polyalkylene glycol and the like.

For the polycondensation, a known method in which initial condensation is carried out by a transesterification method, a direct esterification method or the like can be adopted.

Aromatic dicarboxylic acids include terephthalic acid, isophthalic acid and 2,6-naphthalenedicarboxylic acid, and glycols include ethylene glycol, propylene glycol, butanediol, neopentyl glycol, 1,4-cyclohexanedimethanol and diethylene glycol. , P-xylene glycol and the like, but it is preferable to use terephthalic acid or 2,6-naphthalenedicarboxylic acid as the aromatic dicarboxylic acid and ethylene glycol as the glycol. In this case, other dicarboxylic acids such as isophthalic acid and other diols such as butanediol can be added.

Examples of the aromatic dicarboxylic acid having a metal sulfonate group used in the present invention include 5-sodium sulfoisophthalic acid, 2-sodium sulfoisophthalic acid, 4-sodium sulfoisophthalic acid and sodium sulfonaphthalenedicarboxylic acid. Examples of the diol having a metal sulfonate group include sodium sulfomethylethylene glycol. In the present invention, of these, it is particularly preferable to use 5-sodium sulfoisophthalic acid.

Examples of the polyalkylene glycol used in the present invention include polyethylene glycol and polypropylene glycol. In the present invention,
It is particularly preferable to use polyethylene glycol.

The number average molecular weight of the polyalkylene glycol is preferably 500 to 30,000.

In the present invention, the amount of the aromatic dicarboxylic acid having a metal sulfonate group and / or the diol having a metal sulfonate group in the copolymerized polyester containing polyethylene terephthalate as a main component is 2 to 5 mol%. And the amount of polyalkylene glycol is preferably 3 to 7% by weight.

The above polyester has an area ratio in order to satisfy the mechanical strength and dimensional stability of the film support.
Those stretched in a range of 4 to 16 times are preferable.

The thickness of the support used in the present invention is 50 to 20.
0 μm is preferable, and 50 to 100 μm is more preferable. For the support of the present invention, a matting agent, an antistatic agent, a lubricant, a surfactant, a stabilizer, a dispersant, a plasticizer, an ultraviolet absorber, a conductive substance, and a tackifier. An agent, a softening agent, a fluidity-imparting agent, a thickener, an antioxidant 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 those having excellent heat resistance in the film forming process are preferable, and examples thereof include anthraquinone chemical dyes. Further, as the color tone, when it is intended 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. Diaresin, Ba manufactured by Mitsubishi Kasei Co., Ltd.
The target can be achieved by using dyes such as MACROLEX manufactured by yer Co., Ltd. alone or by appropriately mixing them.

Next, the conductive layer used in the present invention will be described.

The conductive layer is known, and in the present invention, these known conductive layers can be used.

The conductive layer can be formed by containing a hygroscopic substance or a conductive substance and imparting conductivity. As the substance that imparts these conductivity,
Examples thereof include surfactants, conductive polymers, and inorganic metal oxide sols.

As the surfactant which can be used,
It may be anionic, cationic, betaine or nonionic. Specifically, a guanidine derivative such as a phenylguanidine salt of a fatty acid having 12 to 18 carbon atoms, a phosphate-containing anion activator such as pentaalkyl triphosphate,

[0063]

[Chemical 1] Such as quaternary ammonium salt, pyridinium salt, imidazoline derivative, morpholine derivative, polyoxyethylene-
Examples thereof include polyethylene glycol-based nonionic activators such as alkylphenol and alkylamide ether, and sorbitan fatty acid ester.

The conductive polymer may be a copolymer or copolymer of a hydrophilic electrolyte monomer such as an ethylenically unsaturated mono- or dicarboxylic acid or its derivative and a hydrophobic monomer such as an ethylenically unsaturated monomer. Examples thereof include polymer latex, polyion complex, and those obtained by insolubilizing these copolymers by crosslinking.

The conductive polymer may be any of anionic, cationic, betaine and nonionic, and among them, preferred are ionic polymers such as anionic, cationic and betaine. More preferred are anionic sulfonic acid-based, carboxylic acid-based,
It is a phosphoric acid type polymer or latex, and is also a tertiary amine type, a quaternary ammonium type, or a phosphonium type.

These conductive polymers are disclosed, for example, in Japanese Patent Publication No. 52-25251, Japanese Patent Publication No. 51-29923, and Japanese Patent Publication No. 60-4.
Anionic polymers or latexes described in JP-B-8024, JP-B-57-18176, JP-A-57-56059 and JP-A-58-5
Cationic polymers or latexes described in 6856, U.S. Pat. No. 4,118,231 and the like can be mentioned.

Specific examples of these conductive polymers or latices will be described below, but the present invention is not limited by these descriptions.

[0068]

[Chemical 2]

[0069]

[Chemical 3]

[0070]

[Chemical 4] These conductive polymers can be used alone, but it is more preferable to apply them in combination with other binders. The binder used in combination is not particularly limited, but latex binder is preferable. Furthermore, curing agents can also be used with these binders.

The content of the conductive polymer of the present invention is 0.005
A to 5 g / m ^2, preferably from 0.01 to 3 g / m ^2, more preferably 0.02 to 1 g / m ^2.

When a binder is used in combination, the weight ratio of the conductive polymer or latex to the binder is 99: 1.
To 10:90 are preferred, 80:20 to 20:80 are more preferred, and 70:30 to 30:70 are particularly preferred.

In the present invention, an ionic polymer is preferable as the substance that imparts conductivity to the conductive layer.

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 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. .

Twins are silver halide crystals 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 to the thickness of tabular grains (also referred to as 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 of the circle equivalent to 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.

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.

[0083] 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:

[0087]

[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 coats the core, and the shell is formed of one 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 above core is preferably 10 mol% or more, more preferably 20 mol% or more, and further 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%.

The silver halide grains contained in the silver halide photographic emulsion are prepared by preliminarily allowing an aqueous solution containing a protective colloid such as gelatin and seed grains to be present in a reaction vessel and, if necessary, silver ions, halogen ions or silver halide fine grains. Is supplied to grow seed crystals. 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 and may be any of silver bromide, silver iodide, silver chloride, silver iodobromide, silver chlorobromide, silver chloroiodide and silver chloroiodobromide. Silver bromide and silver iodobromide are 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 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 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, Item 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.
No. 308119 (Respectively RDl7643, RDl8716 and RD308
Abbreviated as 119. )It is described in. Table 1 shows the locations.

[0102]

[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.

[0103]

[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 RDl7643 and RD308119 below. Table 3 shows the related description.

[0105]

[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 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.W. 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.

[0110]

EXAMPLES Specific examples of the present invention will be described below.
The embodiments of the present invention are not limited to these.

Example 1 [Samples 1 to 17] To 100 parts by weight of dimethyl terephthalate and 64 parts by weight of ethylene glycol, 0.1 part by weight of calcium acetate hydrate was added as a transesterification catalyst, and transesterification was carried out by a conventional method. It was

An ethylene glycol solution (concentration: 35% by weight) of 5-sodium sulfoisophthalic acid bis-β-hydroxyethyl ester (abbreviation: SIP) was added to the obtained product (the addition amount is shown in Tables 4 and 5). , And polyethylene glycol (abbreviation: PEG) (number average molecular weight Mn and addition amount are shown in Table 4 and Table 5), antimony trioxide 0.05.
Parts by weight and 0.13 parts by weight of phosphoric acid trimethyl ester were added. Then, the temperature was gradually raised and the pressure was reduced, and polymerization was carried out at 280 ° C. and 0.5 mmHg to obtain a copolyester.

These copolyesters were treated with T at 290 ° C.
The film was melt extruded from a die and rapidly cooled and solidified on a cooling drum to obtain an unstretched film. This unstretched film is preheated at 80 ° C, stretched 3.2 times in the vertical direction, and
After being stretched 3.2 times in the transverse direction at 0 ° C., it was heat set at 210 ° C. for 30 seconds to obtain biaxially stretched films having the thicknesses shown in Tables 4 and 5. The biaxially stretched film was used as a support.

Both sides of the support were subjected to a corona discharge treatment of 8 W / (m ² · min), and one side was coated with the undercoating coating solution B-3 shown below so as to have a dry film thickness of 0.8 μm. Forming a subbing layer B-3 on the other surface of the support.
4 to a dry film thickness of 0.8 μm to form an undercoat layer B-4.
Was formed.

<Undercoating Coating Liquid B-3> Copolymer latex liquid containing 30% by weight of butyl acrylate, 20% by weight of t-butyl acrylate, 25% by weight of styrene, and 25% by weight of 2-hydroxyethyl acrylate (solid content). 30%) 270g Compound (UL-1) 0.6g Hexamethylene-1,6-bis (ethyleneurea) 0.8g Finish with water 1000ml

<Undercoating Coating Liquid B-4> Copolymer latex liquid of butyl acrylate 40% by weight, styrene 20% by weight and glycidyl acrylate 40% by weight (solid content 30%) 270 g Compound (UL-1) 0.6 g Hexa Methylene-1,6-bis (ethylene urea) 0.8g Finish with water 1000ml

Further, a corona discharge of 8 W / (m ² · min) was applied on the undercoat layer B-3 and the undercoat layer B-4, and the undercoat layer B-
On the undercoat layer B-3, the following coating solution B-5 is applied to a dry film thickness of 0.1 μm to form an undercoat layer B-5. On the undercoat layer B-4, the following coating solution B-5 is formed. -6 was applied to a dry film thickness of 0.8 μm to form an undercoat layer B-6 having an antistatic function.

<Coating Liquid B-5> Gelatin 10 g Compound (UL-1) 0.2 g Compound (UL-2) 0.2 g Compound (UL-3) 0.1 g Silica particles (average particle diameter: 3 μm) 0.1 g Finish with water 1000 ml

<Coating Liquid B-6> Water-soluble conductive polymer (described in Tables 4 and 5) Described in Tables 4 and 5 A latex liquid containing the compound (UL-4) as a component (solid content 20%) 80 g Ammonium sulfate 0.5g Hardener (UL-5) 12g Polyethylene glycol (weight average molecular weight 600) 6g Finish with water 1000 ml

On the undercoat layer B-6 of the support on which the undercoat layer was formed as described above, a corona discharge of 8 W / (m ² · min) was applied, and then the undercoat layer B-6 was coated. The following magnetic paint M-1 was applied to the above to form a magnetic recording layer. The coercive force Hc of the obtained magnetic layer was 460 Oe, and the optical color density was 0.18.

Furthermore, 25 W / (m ² is formed on the undercoat layer B-5.
-Min) corona discharge is applied to the surface of the undercoat layer B-5,
The following photographic constituent layers were sequentially formed to prepare multilayer silver halide color photographic light-sensitive materials (Samples 1 to 17).

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

<Magnetic Paint M-1> γ-Fe ₂ O ₃ (Holding power Hc = 330 Oe, BET = 32 m ² / g) (made into an aqueous dispersion using a sand mill) 200 mg Gelatin 3.0 g Sodium-di- (2-Ethylhexyl) -sulfosuccinate 200mg Vinylsulfone type hardener 15mg

<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 Acrylate: methacrylate: methacrylic acid = 3: 3: Copolymer of 4 (weight ratio) (average particle size 3 [mu] m) 0.13 g Gelatin 0.7g

-Preparation of silver iodobromide emulsion-The silver iodobromide emulsion used in the 10th layer 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) After that, the solution (H-1) having the following composition and the solution (S-1) having the following composition were mixed at a ratio of 1: 1.
While maintaining the flow rate ratio of, the flow rate was accelerated (the flow rate at the end was 3.6 times the initial flow rate) over 86 minutes.

(Formation of external high iodine phase-shell phase) Subsequently, while maintaining pAg 10.1 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 solution of -1 of the following compound in ethanol 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 Water finish 3776.8 ml

<S-2> Solution Silver nitrate 1133.0 g 28% aqueous ammonia solution Equivalent Finish with water 3776.8 ml

For the silver iodobromide emulsions used in layers other than the 10th layer, the average grain size of seed crystals, temperature, pA
The emulsions having different average grain sizes and silver iodobromide contents were prepared by changing g, pH, flow rate, addition time and halide composition.

All were core / shell type monodisperse emulsions having a distribution of 20% or less. Each emulsion was subjected to optimum 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. Each compound used to prepare Samples 1 to 17
The structure of is shown below.

[0141]

[Chemical 5]

[0142]

[Chemical 6]

[0143]

[Chemical 7]

[0144]

[Chemical 8]

[0145]

[Chemical 9]

[0146]

[Chemical 10]

[0147]

[Chemical 11]

[0148]

[Chemical 12]

[0149]

[Chemical 13]

[0150]

[Chemical 14]

[Comparative Samples Comparative-1 and 2] A multilayer silver halide color photographic light-sensitive material was prepared in the same manner as in Sample 1 except that the support of Sample 1 was replaced with a photographic polyethylene terephthalate base having a thickness shown in Table 5. Materials (Comparative-1 and 2) were made.

[Comparative Samples Comparative-3 and 4] A support in which the number average molecular weight Mn and addition amount of PEG and the addition amount of SIP were changed as shown in Table 5 and the thickness was changed as shown in Table 5. Multilayer silver halide color photographic light-sensitive materials (Comparative-3 and 4) were prepared in the same manner as in Sample 1 except that was used.

[Comparative Sample Comparative-5] Same as Sample 1 except that the substrate was replaced with a commercially available cellulose triacetate (TAC) film having a thickness shown in Table 5 which was subjected to a conventional undercoating treatment. Multi-layer silver halide color photographic light-sensitive material (comparison-
5) was created.

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. This was loaded into a photographic camera with a magnetic head described in US Pat. No. 5,021,820, and signals were written on tracks C0 to C3 by the signal input method described in the specification.

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

This film was subjected to the development processing shown below, and then subjected to a magnetic recording / reproducing apparatus to examine a reproduction output error. The reproduction output error is a case where the average reproduction output per track is 70% or less of the reproduction output when the magnetic head accurately contacts the film.

<Development Processing> l. Color development: 3 minutes 15 seconds 38.0 ± 0.1 ° C 2. Bleaching …… 6 minutes 30 seconds 38.0 ± 3.0 ℃ 3. Rinse with water …… 3 minutes 15 seconds 24-41 ℃ 4. Settling …… 6 minutes 30 seconds 38.0 ± 3.0 ℃ 5. Rinse with water …… 3 minutes 15 seconds 24-41 ℃ 6. Stability …… 3 minutes 15 seconds 38.0 ± 3.0 ℃ 7. Dry …… 50 ℃ or less

The composition of the treatment liquid used in each step is shown below. <Color developer> 4-amino-3-methyl-N-ethyl-N- (β-hydroxyethyl) aniline / sulfate 4.75 g anhydrous sodium sulfite 4.25 g hydroxylamine / 1/2 sulfate 2.0 g anhydrous potassium carbonate 37.5 g Sodium bromide 1.3g Nitrilotriacetic acid sodium salt (monohydrate) 2.5g Potassium hydroxide 1.0g Add water to make 1 liter (pH = 10.l) <bleaching solution> Ethylenediaminetetraacetic acid iron (llI ) Ammonium salt 100.0 g Ethylenediaminetetraacetic acid diammonium salt 10.0 g Ammonium bromide 150.0 g Glacial acetic acid 10.0 g Water is added to make 1 liter, and pH is adjusted to 6.0 with ammonia water. <Fixer> Ammonium thiosulfate 175.0 g Anhydrous sodium sulfite 8.5 g Sodium metasulfite 2.3 g Add water to make 1 liter and adjust to pH 6.0 with acetic acid <Stabilizer> Formalin (37% aqueous solution) l.5 ml Konidax (Konica Corporation) 7.5 ml Add water to make 1 liter.

20 samples were tested for each sample, the reproduction output of all 24 frames was examined, and the number of films in which a reproduction output error occurred was counted.

The test environment in which signals were written in the camera was 25 ° C., 50% RH and −5 ° C. Regeneration was carried out at 25 ° C and 50%.

The results are shown in Tables 4 and 5.

[0162]

[Table 4]

[0163]

[Table 5]

[0164]

The photographic light-sensitive material of the present invention maintains sufficient adhesion between the magnetic recording layer and the magnetic head even when environmental conditions change, and causes errors during input and reproduction of magnetic signals. Is reduced, the reliability of magnetic recording is improved, and the mechanical strength is sufficient.

[Brief description of drawings]

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

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoichi Saito 1 Sakura-cho, Hino City, Tokyo Konica Stock Company

Claims (4)

[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, wherein the support is used as a copolymer component. To 10 mol% of an aromatic dicarboxylic acid having a metal sulfonate group and / or a diol having a metal sulfonate group, and a resin containing a copolyester as a main component having at least 1 to 10 wt% of a polyalkylene glycol. Photosensitive material, which is a film. 2. The photographic light-sensitive material according to claim 1, wherein the polyalkylene glycol is polyethylene glycol. 3. The magnetic recording layer side has at least one conductive layer, and the surface specific resistance on the magnetic recording layer side is 1 × 10 ¹¹ Ω / cm.
The photographic light-sensitive material according to claim 1 or 2, wherein: 4. The photographic light-sensitive material according to claim 3, wherein the electrically conductive material of the electrically conductive layer contains an ionic polymer as a main component.