JP2001147504A - Silver halide photographic sensitive material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a photographic sensitive material with a transparent magnetic recording layer less liable to make magnetic input and output errors and excellent in transparency. SOLUTION: The silver halide photographic sensitive material has at least one transparent magnetic recording layer containing magnetic particles and at least one lubricative surface layer on one side of the substrate and at least one photosensitive silver halide emulsion layer on the other side. The coefficient of static friction μS and the coefficient of kinematic friction μk between the face of the sensitive material on the magnetic layer side and the face on the emulsion layer side under measurement conditions of high humidity and low speed (23 deg.C, 65% RH and 2 cm/min) satisfy the relational expressions 0.25<=μS<=0.50 and 0.25<=×k<=0.50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a silver halide photographic material having a transparent magnetic recording layer, free from magnetic input / output errors, excellent in transparency and free of transfer agent smear.

[0002]

2. Description of the Related Art The magnetic recording layer of a magnetic recording medium such as an audio tape, a video tape, and a floppy disk is
Large magnetic material content (coating amount) provides high magnetic output, but low light transmission makes it unsuitable for providing a magnetic recording layer as described above on the printed surface of a magnetic card or on a photographic film. It is. U.S. Patent No. (hereinafter "US-"
Also called. No. 5,491,051 describes photographic elements having excellent magnetic and photographic properties which can be used repeatedly. However, this photographic element incorporates various information such as shooting date and time, weather, lighting conditions, shooting conditions such as reduction / enlargement ratio, the number of reprints, a portion to be zoomed, a message, and the like. However, there is a problem that input and output of magnetic recording information such as development and printing conditions are not always reliable. Japanese Patent Application Laid-Open Nos. 4-214217 and 6-1 discloses techniques relating to a transparent magnetic layer.
61033, US-5,496,687, US-5,4
32,050, US-5,436,120, US-5
No. 434,037. Japanese Patent Application Laid-Open No. Hei 7-181638 discloses a technique for controlling the slipperiness with a certain type of surfactant to stabilize the film feeding and reduce abrasion. Was not enough.

When the magnetic recording layer is incorporated in a photographic element to perform information input / output processing, a magnetic head is mainly composed of a dried product of a developing solution and has very high tackiness. The adhesive dirt, which does not exist on a normal magnetic recording medium, adheres and accumulates on the magnetic head, significantly deteriorating the contact between the magnetic layer and the head, causing a so-called spacing loss and causing a reading error in magnetic recording. I was letting it.
In order to clean this dirty head, even if an alumina abrasive such as that used in a normal magnetic recording medium is used, almost no contamination of the dry matter of the developing solution to the magnetic head will occur in a conventionally known range. Could not be prevented. Also,
Increasing the amount of the alumina abrasive used or increasing the particle size of the alumina abrasive deteriorates the dirt removal performance of the medium, but makes the medium less transparent and unsuitable for photographic use. A new problem, such as extremely shortening the life of the device. In order to reduce the contamination of the magnetic head while reducing the drawbacks when used as such a photographic element and to clean the adhered contamination, a spherical inorganic and / or spherical organic material is formed on the surface of the support on the side of the magnetic recording layer. A method has been found for arranging the particles. In order to make the height of the arranged particles uniform, the particles are added to the higher fatty acid ester slip agent-containing layer coating liquid above the magnetic recording layer coating liquid, and immediately after coating, a part of the lower magnetic recording layer is dissolved. The method of embedding the spherical particles is effective for homogenization. For the purpose of stabilizing the embedding of the spherical particles and the stability of the coating solution, diacetone alcohol or 1-acetoxy-solvent is used as a coating solution for the surface sliding layer. Solvents such as 2-methoxyethane have also been found to be suitable.

However, in order to reduce reading errors in magnetic recording, it has been desired to develop further improved means.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a photographic light-sensitive material having a transparent magnetic recording layer having a small magnetic input / output error and excellent transparency.

[0006]

The above objects have been achieved by the following silver halide photographic materials.

(I) A transparent magnetic recording layer containing at least one layer of magnetic particles and a surface slip layer are provided on one side of the support, and at least one layer is provided on the surface of the transparent magnetic recording layer opposite to the support with respect to the support. In a silver halide photosensitive material having a photosensitive silver halide emulsion layer, the surface on the transparent magnetic recording layer side and the silver halide emulsion under high humidity and low speed measurement conditions (23 ° C., 65% RH, 2 cm / min) Coefficient of static friction μS with layer side surface
And a kinetic friction coefficient μk satisfying the following relational expressions (1) and (2): (1) 0.25 ≦ μS ≦ 0.50 (2) 0.25 ≦ μk ≦ 0.50.

(II) (1) Higher fatty acid ester slipping agent, (2) Mohs hardness of 6
To 8 spherical inorganic particles, (3) spherical organic polymer particles,
And (4) diacetone alcohol, 1-acetoxy-
(I) The silver halide photographic light-sensitive material according to (I), which contains at least one solvent selected from 2-methoxyethane, ethylene glycol diacetate, methyl acetoacetate and ethyl acetoacetate in an amount of 100 μL / m ² or less. material.

(III) The transparent magnetic recording layer according to (I) or (II), wherein the transparent magnetic recording layer contains inorganic particles having a primary particle size of 1 nm to 50 nm in a range of 10 mg / m ^{2 to} 200 mg / m ^2. Silver halide photographic material.

(IV) The spherical inorganic particles are amorphous silica particles (II) or (III).
3. The silver halide photographic light-sensitive material described in 1. above.

(V) The spherical organic particles according to any one of (II) to (IV), wherein the spherical organic particles are polysiloxane particles, benzoguanamine particles, melamine resin particles, or methacrylic acid resin particles. Silver halide photographic material.

(VI) The transparent magnetic recording layer contains an alumina abrasive having a particle size substantially higher than the average surface protrusion height of the spherical inorganic particles or the spherical organic polymer particles. The silver halide photographic material according to any one of (I) to (V), wherein

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The value of the static friction coefficient μS and the value of the dynamic friction coefficient μk that exhibit the effect of the present invention are both 0.25 to
Must be between 0.50 and preferably 0.25
０．４0.40. In order to set the static / dynamic friction coefficient value within this range, it is necessary to control the amount of the slip agent applied and the selection of the composition and physical properties of the inorganic spherical particles, organic polymer particles, and inorganic fine particles, and the amount applied.

The method for measuring slipperiness according to the present invention is described in JIS.
This is based on the method of testing the coefficient of friction of plastic film K 7125, which is modified in terms of practicality. Details are as described in the examples below.

The higher fatty acid ester slip agent used in the surface slip layer of the present invention will be described in detail.

As higher fatty acid ester-based slip agents, JP-B-58-33541, UK Patent No. 927,446.
Specification or JP-A-55-126238 and 58
-90633, higher fatty acid esters (fatty acids having 10 to 24 carbon atoms and 10 to 2 carbon atoms).
Ester of alcohol 4) and JP-A-58-50
No. 534, esters of linear higher fatty acids and linear higher alcohols are known. Further, esters of higher fatty acids-higher alcohols containing a branched alkyl group are also preferably used.

As represented by the general formulas (1) and (2),
The long-chain alkyl compound is preferred in that sufficient lubricity and scratch resistance can be obtained before and after the development processing. General formula (1) R ₁ X ₁ R ₂ General formula (2) R ₃ X ₂ R ₄ X ₃ R ₅ .

In the general formula (1), R ₁ and R ₂ are
Each is independently an aliphatic hydrocarbon group. The total carbon number of this compound must be 25 or more and 120 or less. More preferably 30 or more and 100 or less, still more preferably 40 or more and 80 or less
It is as follows. R ₁ and R ₂ are each preferably an aliphatic hydrocarbon group having 10 to 70 carbon atoms. The aliphatic hydrocarbon group may have a straight-chain structure, may contain an unsaturated bond, may have a partial substituent, or may have a branched structure. Among them, a linear structure is particularly preferable from the viewpoint of scratch resistance. More preferably, the carbon number of R ₁ and R ₂ is 15 or more and 50 or less.

In the general formula (2), R ₃ , R ₄ and R ₅ are each independently an aliphatic hydrocarbon group. The total carbon number of this compound must be 30 or more and 150 or less. More preferably 40 or more and 130 or less, still more preferably 50 or more and 12 or less.
0 or less. R ₃ and R ₅ each have 10 carbon atoms.
R ₄ is an aliphatic hydrocarbon group having a carbon number of 10 or more and 70 or less.
It is preferably an aliphatic hydrocarbon group having at least 50 and at most 50.
The aliphatic hydrocarbon group may have a straight-chain structure, may contain an unsaturated bond, may have a partial substituent, or may have a branched structure. Among them, a linear structure is particularly preferable from the viewpoint of scratch resistance. R ₃ , R ₅
Is particularly preferably 15 or more and 50 or less. Also, the aliphatic hydrocarbon group for R ₄ may have a linear structure, may contain an unsaturated bond,
It may have a partial substituent or a branched structure. Among them, a linear structure is particularly preferable from the viewpoint of scratch resistance. Particularly preferred as the carbon number of R ₄ is 12 or more and 25 or less.

In the general formulas (1) and (2), X
₁ , X ₂ and X ₃ are each independently a divalent linking group. Specifically, -OCO -, - C (O ) O -, - C (O) NR -, - SO 3 -, - OSO 3 -, - SO
₂ NR-, -O-, -OC (O) NR-, etc. are shown (R represents H or a saturated aliphatic hydrocarbon group having 8 or less carbon atoms).

Specific examples of the compounds represented by formulas (1) and (2) are shown below.

(1-1) n-C ₁₅ H ₃₁ COOC ₃₀ H ₆₁ -n (1-2) n-C ₁₇ H ₃₅ COOC ₄₀ H ₈₁ -n (1-3) n-C ₁₅ H ₃₁ COOC _{50 H 101 -n (1-4) n-} C 27 H 43 COOC 28 H 57 -n (1-5) n-C 21 H 43 COOCH 2 CH (CH 3) -C
_{9 H 19 (1-6) n-} C 21 H 43 COOC 24 H 49 -iso.

(2-1) n-C ₂₉ H ₄₉ OCO (CH ₂ ) ₂
COOC ₂₄ H ₄₉ -n (2-2) n-C ₁₈ H ₃₇ OCO (CH ₂ ) ₄ COOC ₄₀ H
_{81 -n (2-3) n-C} 18 H 37 OCO (CH 2) 18 COOC 18
H ₃₇ -n (2-4) iso-C ₂₄ H ₄₉ OCO (CH ₂ ) ₄ COOC ₂₄
H ₄₉ -n (2-5) n-C ₄₀ H ₈₁ OCO (CH ₂ ) ₂ COOC ₅₀ H
_{101 -n (2-6) n-C} 17 H 35 COO (CH 2) 6 OCOC 17 H
_{35 -n (2-7) n-C} 21 H 43 COO (CH 2) 18 OCOC 21
H ₄₃ -n (2-8) iso-C ₂₃ H ₄₇ COO (CH ₂ ) ₂ OCOC ₂₃
H ₄₇ -n (2-9) iso-C ₁₅ H ₃₁ COO (CH ₂ ) ₆ OCOC ₂₁
H ₄₃ -n.

As a more preferred slip agent, a polar substituent is added to at least one of R ₁ and R ₂ or at least one of R ₃ , R ₄ and R _{5 in} the above general formulas (1) and (2). Is a compound having Here, the polar substituent means a group capable of hydrogen bonding or an ionic dissociation group.
Although it does not specifically limit as a polar substituent, -OH,-
_{COOH, -COOM, -NH 2, -NR} 3 + A -, -CO
NH _{2 and the} like are preferred. Here, M is an alkali metal (eg, Na, K, Li), an alkaline earth metal (eg, C
a, Mg) cations such as quaternary ammonium salts, and R is H
Alternatively, a saturated aliphatic hydrocarbon group having 8 or less carbon atoms, A ⁻ is an anion such as a halogen atom (eg, Cl ⁻ , F ⁻ , I ⁻ ). Of these groups, -OH is particularly preferred. Any number of polar substituents may be present in one molecule.

The amount of the slipping agent represented by the general formulas (1) and (2) of the present invention is affected by the coating amount of the spherical inorganic particles and the spherical organic polymer particles, but has the effects of the present invention. the cell usage is preferably 0.01 to 0.1 g / m ^2, more preferably 0.02~0.07g / m ^2, more preferably is 0.03~0.05g / m ² . Specific examples of the slip agent are shown below, but the invention is not limited thereto.

(3-1) HOCO (CH ₂ ) ₁₀ COOC ₂₁ H ₄₃ (3-2) C ₁₇ H ₃₅ COOCH ₂ CH (OH) C ₁₂ H ₂₅ (3-3) C ₉ H ₁₉ C (OH) (C ₉ H ₁₉ ) CH ₂ COOC ₂₅ H ₅₁ (3-4) C ₆ H ₁₃ CH (OH) (CH ₂ ) ₁₀ COOC ₄₀ H ₆₁ (3-5) C ₁₄ H ₂₉ CH (NH ₂ ) COO ( CH ₂ ) _n CH (CH ₃ ) (CH ₂ ) _m -CH ₃
(n + m = 15) (3-6) CH ₃ (CH ₂ ) ₂ CH (COONa) (CH ₂ ) ₆ COOC ₄₀ H ₈₁ (3-7) HOCH ₂ (CH ₂ ) ₆ CH (OH) CH (OH) (CH ₂ ) ₄ COOC ₅₀ H ₁₀₁ (3-8) C ₁₇ H ₃₃ COO (CH ₂ ) ₁₆ OH (3-9) CH ₃ (CH ₂ ) ₂ CH (OH) (CH ₂ ) ₆ CONHC ₂₁ H ₄₂ (3-10) C ₇ H ₁₅ COOCH (CONH ₂ ) C ₁₆ H ₃₃ (3-11) C ₂₇ H ₅₅ COOCH ₂ CH (OH) CH ₂ OH (3-12) HOCO (CH ₂ ) ₅ COOC ₄₀ H ₈₁ (3-13) CH ₃ (CH ₂ ) ₁₅ CH (SO ₃ Na) COOCH ₂ CH (C ₁₃ H ₂₇ ) -C ₁₀ H ₂₁ (3-14) C ₆ H ₁₃ CH (OH) (CH ₂ ) ₁₀ COOC ₅₀ H ₁₀₁ .

(4-1) C ₁₄ H ₂₉ CHCOO (CH ₂ ) ₅ OCOCH (OH) C ₁₄ H
₂₉ (4-2) C ₁₀ H ₂₁ COOCH (C ₂ H ₅ ) (CH ₂ ) ₇ CH (C ₂ H ₄ COOH) -OCOC ₁₀
H ₂₁ (4-3) NaOCO (CH ₂ ) ₁₁ COO (CH ₂ ) ₁₀ OCO (CH ₂ ) ₁₁ -COOH (4-4) C ₉ H ₁₉ C (OH) (C ₉ H ₁₉ ) CH ₂ COO ( (CH ₂ ) ₁₅ CONH-C ₁₀ H ₂₁ (4-5) H ₂ NCO (CH ₂ ) ₁₀ COOCH (C ₆ H ₁₃ ) (CH ₂ ) ₁₀ COO-C ₃₀ H ₆₁ (4-6) C ₁₄ H _{29 ^{CH (N + (CH 3)}} 4 Cl -) COO (CH 2) 10 OCO-C 17 H 33 (4-7) C 6 H 13 CH (OH) (CH 2) 10 COO (CH 2) 8 OCO- (CH ₂ ) ₁₀ CH (O
H) C ₆ H ₁₃ (4-8) C ₁₅ H ₃₁ COOCH ₂ CH (OH) CH ₂ OCOC ₁₅ H ₃₁ (4-9) C ₄₀ H ₈₁ OCO (CH ₂ ) ₅ COO (CH ₂ ) ₅ COOH ( 4-10) CH ₃ (CH ₂ ) ₁₅ CH (SO ₃ Na) COO (CH ₂ ) ₂ CH (CH ₃ )-(CH ₂ ) ₂
OCOC ₁₇ H ₃₅ (4-11) HOCH ₂ CH (OH) CH ₂ OC (CH ₂ ) ₃ CH (C ₂ H ₅ )-(CH ₂ ) ₉ COOC
₅₀ H ₁₀₁ (4-12) _{C 8 H 17 NHCO (CH 2} ) 10 COO (CH 2) 15 OH. Since the compounds of the above general formula have high hydrophobicity, they often have poor solubility in solvents. Therefore, there is a method of dissolving in a nonpolar organic solvent such as toluene or xylene or a method of dispersing in a coating solution, but a method of dispersing a nonpolar organic solvent is preferable because it is difficult to handle. At this time, any dispersing agent may be used as long as it does not deteriorate the slipperiness and scratch resistance. Preferred dispersing agents include those described in the following general formula (3).

General formula (3) R ₆ YBD In general formula (3), R ₆ is an aliphatic hydrocarbon group having 25 to 70 carbon atoms. This hydrocarbon group may contain an unsaturated bond, may be substituted with various substituents, and may contain a branched structure. Particularly preferred for slipperiness and scratch resistance are straight-chain aliphatic hydrocarbon groups. The number of carbon atoms of this hydrocarbon group is in the range of 25 or more and 70 or less. The number of carbon atoms is particularly preferably 30 or more and 60 or less.

Y is a divalent linking group or a single bond. Specifically, -C (O) O-, -OCO-, -C (O) NR'-, -NR'CO
-, -SO ₂ NR'-, -NR'SO _2- , -O-, -S-, -NR-, -OCOR "CO
O-, -OCOR "O- and the like (R 'represents H or a saturated aliphatic hydrocarbon group having 8 or less carbon atoms.
Represents H or a saturated aliphatic hydrocarbon group having 8 or less carbon atoms).

B is-(CH ₂ CH ₂ O) _a -,-(CH ₂ CH (OH) CH ₂
O) _b -,-((CH ₂ ) _c CH (R) CH ₂ O) _d -,-(CH ₂ CH ₂ O) _e- (CH ₂ CH (OH) CH ₂ O) _f- (CH ₂ ) _c CH (R ¹ ) CH ₂ O) _g- ,
Or-(CH (R ² ) CH ₂ O) _h- , wherein a is an integer of 3 to 40;
b and d are integers of 3 to 30, c is an integer of 1 to 3, e is 0 to 40
, F, g, and h are integers from 0 to 30, and e + f + g is 3
-40, R ¹ is H, CH ₃ or phenyl group, R ² is CH ₃
Or OH. The length of these nonionic groups is
If it is too short, sufficient solubility of the slip agent cannot be obtained, or sufficient dispersion stability cannot be obtained when dispersed. On the other hand, if the length is too long, there arise problems such as insufficient slippage and scratch resistance, and deterioration of the slippage property with time after the treatment. Among the above nonionic groups, particularly preferred is-(CH
₂ CH ₂ O) _a- , wherein a is preferably 5 to 30.

D represents a hydrogen atom, an aliphatic hydrocarbon group or an aromatic hydrocarbon group.

The molar ratio of the dispersant represented by the general formula (3) to the higher fatty acid ester slip agent represented by the general formula (1) or (2) is preferably 1: 9 to 9: 1, More preferably, it is 6: 4 to 2: 8. The method of dispersing the slip agent will be described later.

Specific examples of the compound represented by the general formula (3) are shown below.

(5-1) nC ₃₀ H ₆₁ O (CH ₂ CH ₂ O) ₁₀ H (5-2) nC ₄₀ H ₈₁ O (CH ₂ CH ₂ O) ₁₅ H (5-3) nC ₅₀ H ₁₀₁ O (CH ₂ CH ₂ O) ₁₆ H (5-4) nC ₅₀ H ₁₀₁ O (CH ₂ CH ₂ O) ₃₀ H (5-5) nC ₄₀ H ₈₁ O (CH ₂ CH ₂ O) ₁₀ H (5 -6) nC ₅₀ H ₁₀₁ (CH ₂ CH ₂ O) ₁₆ H (5-7) nC ₅₀ H _101- (CH (CH ₃ ) CH ₂ O) ₃ (CH ₂ CH ₂ O) ₁₆ H (5-8 ) nC ₅₀ H _101- (CH ₂ CH (OH) CH ₂ O) _3- (CH (OH) CH ₂ O) _3-
(CH ₂ CH ₂ O) ₁₅ H (5-9) nC ₄₀ H ₈₁ OCOCH ₂ CH ₂ COO (CH ₂ CH ₂ O) ₁₆ H (5-10) nC ₅₀ H ₁₀₁ OCOCH = CHCOO (CH ₂ CH ₂ O ) ₁₆ H (5-11) nC ₅₀ H ₁₀₁ OCOCH ₂ CH ₂ COO- (CH ₂ CH (OH) CH ₂ O) _3- (CH
₂ CH ₂ O) ₁₅ H.

Next, the spherical inorganic particles having a Mohs hardness of 6 to 8 used in the surface sliding layer of the present invention will be described in detail.

The spherical inorganic particles having a Mohs' hardness of 6 to 8 of the present invention used for effectively removing extremely sticky and highly accumulative stains, such as dried matter of a developing solution, from a magnetic head are described below. , Silica (silicon dioxide), titanium dioxide and the like. Particles having a Mohs 'hardness of less than 6 have a low ability to remove the highly sticky dirt, while particles having a Mohs' hardness of 9 or more (for example, α-alumina particles) excessively polish the magnetic head and shorten the life of the head. Therefore, it cannot be used in a large amount and is excluded from the range of the inorganic particles of the present invention. However, while the medium is running, the surrounding dust and sand, etc., get caught and the scratches on the magnetic head surface are eliminated,
In order to always keep the surface of the magnetic head mirror, it is preferable to use a small amount of α-alumina particles in the magnetic recording medium of the present invention. α-Alumina can be coated by being contained in either the magnetic recording layer coating solution or the upper layer coating solution. It is preferable to select the particle diameter and the coating method so that the height is substantially higher than the average surface protrusion height of the other spherical inorganic / organic polymer particles.

The spherical inorganic particles of the present invention have a sharp particle size distribution because dirt adhering to the magnetic head can be instantaneously and efficiently removed by uniformly projecting the spherical inorganic particles from the medium surface. Preferably, there is. The spherical inorganic particles may be either crystalline or amorphous. Amorphous particles are preferred in view of sharp particle size distribution, but are not limited thereto. Further, silica is particularly preferable among the inorganic particles because of the adsorption reactivity with the silane coupling agent. The surface of the spherical inorganic particles of the present invention may be coated with a silane coupling agent, a titanium coupling agent, or the like. As specific examples of these coupling agents and coating methods, for example, compounds and processing methods used for coating magnetic particles described below can be preferably used.

The preferred particle size of the spherical inorganic particles is 0.2 to 3
μm, more preferably 0.3 to 2 μm, and the coating amount is 3 to 8
0 mg / m ^2, preferably not 5 to 40 mg / m ^2, more preferably a 7~20mg / m ^2.

In addition to the spherical inorganic particles of the present invention for removing dirt attached to the magnetic head, in order to secure spacing with the magnetic head and to make dirt less likely to stick to the magnetic head,
It is preferable to use the spherical organic polymer particles in combination with the spherical inorganic particles, at least for the surface sliding layer.

Examples of the spherical organic polymer particles include resin particles such as methacrylic acid resin, polystyrene, polysiloxane, melamine resin, benzoguanamine resin, polytetrafluoroethylene, cellulose acetate, polycarbonate, and nylon. Particles composed of methyl methacrylate, polysiloxane, polystyrene, melamine resin and benzoguanamine resin, or a combination thereof and / or a copolymer of these monomers are preferred. Further, particles obtained by coating a resin constituting organic polymer particles on inorganic particles may be used.

Separately, acrylic acid esters, methacrylic acid esters, itaconic acid diesters, crotonic acid esters, maleic acid diesters, phthalic acid diesters, styrene derivatives, vinyl esters, acrylamides,
Vinyl ethers, allyl compounds, vinyl ketones, vinyl heterocyclic compounds, allyl compounds, acrylonitrile,
One or more homopolymers or copolymers of monomers such as methacrylonitrile and polyfunctional monomers are formed into particles by various means such as a suspension polymerization method, a spray drying method, or a dispersion method. There may be.

The magnetic recording medium for a photographic light-sensitive material of the present invention is characterized in that the outer surface of the magnetic recording layer side (the surface on which the spherical inorganic particles are coated) and the outer surface of the emulsion layer on the opposite side form a film. It slides inside the cartridge when it comes in and out. In this case, when the particles in contact with the emulsion layer surface are spherical organic polymer particles having a low hardness, the emulsion layer surface is less likely to be damaged. For this purpose, it is preferable to use spherical organic polymer particles in combination.

The preferred particle size of the spherical organic polymer particles is
0.3 to 4 μm, more preferably 0.4 to 2.5 μm
Application amount is 5-120mg / m^Two, Preferably 7 to 70
mg / m ^Two, More preferably 10 to 40 mg / m^TwoIn
You.

Further, a part or all of the solvent of the coating solution for the layer containing the spherical inorganic particles and the spherical organic polymer particles may be added to the lower layer (in the present invention, diacetyl cellulose which is a binder of the transparent magnetic recording layer). The above particles can be embedded in a part of the lower layer so as to have a very uniform protrusion height by using a solvent capable of dissolving (e.g.). This uniformity is higher than when the spherical particles are incorporated in a transparent magnetic recording layer.
It was found to be far superior, and was found to be extremely advantageous in achieving both magnetic input / output performance and transparency. In this case, each particle has a volume of 50 in the transparent magnetic recording layer.
% Or more is preferable in order to prevent the particles from falling off, and more preferably 60% or more.
Conversely, in order to exhibit a sufficient cleaning function and a spacing function for preventing the head from being stained, it is preferable that the volume is not filled by 80% or more. A sharp particle size distribution of the spherical particles is preferable because the pressure can be dispersed under the pressure of an opposing roller or the like and the sinking of the particles is reduced, so that the spacing with the head is kept large.

In the present invention, α-alumina particles are preferably used as a magnetic head abrasive.

Specific examples of the spherical inorganic / organic polymer particles and α-alumina particles used in the present invention include:
The following may be mentioned, but not limited thereto. Hereinafter, all the items shown in brackets are trade names.

(Spherical inorganic particles) A-1: "Seahoster KEP30" 0.3 μm A-2: "Seahoster KEP50" 0.5 μm A-3: "Seahoster KEP70" 0.7 μm A-4: "Seahoster KEP90" 0 0.9 μm A-5: “Seahoster KEP100” 1.0 μm or more A-1 to A-5, amorphous silica particles (manufactured by Nippon Shokubai Co., Ltd.).

(Spherical organic polymer particles) B-1: "Tospearl 105" 0.5 μm B-2: "Tospearl 108" B-3: "XC99-A8808" 0.8 μm or more B-1 to B-3, Spherical crosslinked polysiloxane particles manufactured by Toshiba Silicone Co., Ltd.

C-1: “MX-100α” 1.0 μm C-2: “MX-150” 1.5 μm or more C-1 to C-2, spherical cross-linked PM manufactured by Soken Chemical Co., Ltd.
MA particles.

In addition, "P-1" manufactured by Nippon Paint Co., Ltd.
PMMA particles such as "430" and "P-5000".

D-1: “Eposter S12” 1.2 μm D-2: “Eposter S6” 0.6 μm D-3: “Eposter S” 0.3 μm or more D-1 to D-3, Nippon Shokubai Co., Ltd. Melamine resin particles.

E-1: "Eposter MS" 2 μm benzoguanamine resin particles E-2: "Eposter M30" 3 μm benzoguanamine / melamine resin particles E-1 to E-2, manufactured by Nippon Shokubai Co., Ltd.

The following are examples of α-alumina. “AKP30”, “AKP2” manufactured by Sumitomo Chemical Co., Ltd.
0, AKP15, AKP10, Sumicorundum AA-1.5, Sumicorundum AA-1.
0 "," Sumicorundum AA-0.7 "," Sumicorundum AA-0.5 "," HIT50 "," ERC-DBM "manufactured by Reynolds Co., Ltd.," No.
rton-E600 ".

Α-Alumina may be added to the coating solution for the magnetic recording layer or the surface slipping layer, or to the coating solution for both layers, but is more preferably added to the coating solution for the magnetic recording layer. . Further, α-alumina used in the present invention may be subjected to a surface coating treatment with a silane coupling agent, a titanium coupling agent, or the like used for coating magnetic particles described later.

The particle size of alumina is preferably 0.4 to 5 μm, more preferably 0.6 to 3 μm. Application amount is 2
４０40 mg / m ² is preferable, and 4 to 15 m is more preferable.
g / m ² .

Further, in order to reduce head contamination and reduce magnetic input / output errors, in addition to the above-mentioned spherical inorganic particles and spherical organic polymer particles, the average primary particle diameter is 1 nm or more and 50 nm or less.
nm or less, the coating amount is 10 mg / m ² or more and 200 mg / m ² or less,
It is preferable to contain inorganic fine particles in an amount of preferably 30 mg / m ² or more and 150 mg / m ² or less. These inorganic fine particles divide the dirt (precipitate) of the developing solution finely, and make the dirt smaller than the spacing with the magnetic head provided by the spherical inorganic particles / spherical organic polymer particles. Plays a role in making dirt hard to contact with
The average primary particle diameter of the inorganic fine particles is preferably from 5 nm to 40 nm, more preferably from 10 nm to 3 nm.
0 nm or less. If it exceeds 50 nm, the transparency will decrease. Particles smaller than 1 nm are difficult to use industrially.

Examples of the inorganic fine particles having an average primary particle diameter of 1 nm or more and 50 nm or less include γ-alumina, θ-alumina, titanium dioxide, colloidal silica, and the like, and preferably colloidal silica in terms of dispersion stability. . However, in the present invention, these fine small particles are used for providing fine surface projections on the surface of the magnetic layer in order to finely divide the developing solution stain, and to achieve the object of the present invention. Can use other particles. The inorganic fine particles may be contained in the magnetic recording layer or the surface sliding layer, but are preferably contained in the magnetic recording layer so as not to impair the dispersion stability of the coating solution.

The following are specific examples of the inorganic fine particles. (Γ-alumina) “AKP-G0” manufactured by Sumitomo Chemical Co., Ltd.
15 ”(θ-alumina)“ AKP-G0 ”manufactured by Sumitomo Chemical Co., Ltd.
08 ”(titanium dioxide)“ Idemitsu Titania ”(colloidal silica) manufactured by Idemitsu Petrochemical Co., Ltd.“ MEK-S ”manufactured by Nissan Chemical Co., Ltd.
T "," MIBK-ST "," Methanol silica sol "
"MA-ST-M", "IPA-ST".

The thickness of the magnetic recording layer is 0.3 μm or more and 1.5
μm or less, preferably 0.5 μm or more and 1.2 μm or less. The number of magnetic recording layers is preferably 1 to 3 layers.

The thickness of the surface sliding layer on the magnetic recording layer is 0.01 μm or more and 0.5 μm or less. Preferably it is 0.01 μm or more and 0.1 μm or less, more preferably 0.01 μm or more and 0.05 μm or less. The number of the surface sliding layers is preferably 1 to 3 layers.

In order for the magnetic recording layer to sufficiently retain the spherical inorganic particles and the spherical organic polymer particles, the thickness of the magnetic recording layer is preferably 50% or more of the size of the particles used.

The refractive index of the particles used in the present invention is not particularly limited, but the difference is 0.08 or less, more preferably 0.04 or less, with respect to the refractive index of the layer containing the particles. Is preferably 0.02 or less from the viewpoint that transparency of a medium such as haze can be improved.

The coating solvent for the surface sliding layer coating solution used in the present invention is mainly diacetone alcohol, 1-acetoxy-2-methoxyethane, ethylene glycol diacetate, methyl acetoacetate, ethyl acetoacetate, etc. It is preferable to appropriately mix solvents such as esters, ketones, alcohols, aliphatic hydrocarbons, aromatic hydrocarbons and the like to control the solubility, drying speed, dispersion stability, and the like of the lower binder.

The preferred content of the solvent after coating and drying is 1
00μL / m ² or less, particularly preferably not more than 70 [mu] L / m ^2. When two or more solvents are contained in the light-sensitive material of the present invention, the upper limit of the content of each of the solvents satisfies the above requirements.

It is industrially possible that the spherical inorganic particles, the spherical organic polymer particles, the α-alumina abrasive and the like used in the present invention are prepared as respective dispersions, added and stirred in the final coating liquid, and prepared. Is preferred. Further, a dispersion liquid can be prepared by selecting a dispersion method (such as a disperser) similar to that for a magnetic substance described later.

In the photographic material having a transparent magnetic recording medium layer of the present invention, the haze of all layers on the magnetic recording layer side is preferably less than 9%, more preferably less than 8%. The transparent magnetic recording layer refers to a magnetic recording layer having a degree of transparency that does not substantially affect photographic image quality, and has a blue filter transmission density of 0 to 0.2, preferably 0 to 0.15, and more preferably Is from 0 to 0.12.

The magnetic particles contained in the transparent magnetic recording layer used in the present invention are made of a ferromagnetic iron oxide (FeO) such as γ-Fe ₂ O _3.
x , 4/3 <x ≦ 3/2), Co-coated ferromagnetic iron oxide (FeO _x , 4/3 <x ≦ 3 /) such as Co-coated γ-Fe ₂ O ₃
2), Co-coated magnetite, Co-containing ferromagnetic iron oxide, Co-containing magnetite, ferromagnetic chromium dioxide,
Ferromagnetic metals, ferromagnetic alloys, and other ferrites,
For example, hexagonal Ba ferrite, Sr ferrite, P
b-ferrite, Ca-ferrite, or a solid solution or ion-substituted material thereof can be used.

The shape of the ferromagnetic material may be any of a needle shape, a rice grain shape, a spherical shape, a cubic shape, a plate shape, and the like, but the needle shape is preferable from the viewpoint of the electromagnetic conversion durability. As for the particle size, in the case of a needle shape, the particle size (long axis length) is preferably 0.01 to 0.5 μm, the ratio of the long axis to the short axis is preferably 50: 1 to 2: 1, and the long axis is preferably 0.1 to 2: 1. ~
0.35 μm, and the ratio of the major axis to the minor axis is more preferably 20: 1 to 3: 1. The specific surface area of the particles is preferably 30 m ² / g or more, more preferably 40 m ² / g or more in S _BET . The sharper the particle size distribution of the magnetic material, the better the magnetic performance,
It is preferable from the viewpoint of haze. The saturation magnetization (σs) of the ferromagnetic material is 50 Am ² / kg or more, and more preferably 70 Am ² / kg or more. Further, the squareness ratio (σr / σs) of the ferromagnetic material is preferably 40% or more, more preferably 45% or more. The coercive force (Hc) is from 1.58 × 10 ⁴ A / m to 2.37 × 10 ⁵ A / m, preferably from 3.95 × 10 ⁴ A / m to 1.58 × 10 ⁵ A / m. is there.

The content of the magnetic particles in the magnetic recording layer is from 10 to 100 mg / m ^{2 in} consideration of the balance between magnetic reading performance and transparency.
Is preferred.

These ferromagnetic particles are prepared by, for example,
Surface treatment may be carried out with silica and / or alumina, such as those described in 9-23505 and JP-A-4-096052. Further, Japanese Patent Application Laid-Open Nos. 4-195726 and 4-1
92116, 4-259911, 5-081652
A surface treatment with an inorganic and / or organic material as described above may be performed. Further, the surface of these ferromagnetic particles may be treated with a silane coupling agent or a titanium coupling agent. Examples of the coupling agent include the following compounds.

Compound Example-6 (6-1) 3-mercaptopropyl trimethoxysilane (6-2) 3-isocyanylpropylmethyldimethoxysilane (6-3) 3- (poly (degree of polymerization 10) oxyethynyl) oxy Propyltrimethoxysilane (6-4) 3-methoxy (poly (degree of polymerization 6) oxyethynyl) oxypropyltrimethoxysilane (6-5) Decyltrimethoxysilane (6-6) 3-aminopropyltrimethoxysilane (6 -7) 3-aminopropyltriethoxysilane (6-8) vinyltrimethoxysilane (6-9) 3-mercaptopropyltrimethoxysilane (6-10) 3-isocyanatopropyltrimethoxysilane (6-11) 3- Glycidoxypropyltrimethoxysilane.

The addition amount of these silane coupling agent and titanium coupling agent to the magnetic particles is 1.0 to 1.0.
It is 200% by mass. Preferably it is 1 to 75% by mass, more preferably 2 to 50% by mass. These silane coupling agents and titanium coupling agents are treated by a direct treatment method for magnetic particles or an integral blending method. Examples of the direct method include a dry method, a slurry method, and a spray method. In the dry method, for example, magnetic particles and a small amount of water, or an organic solvent, or an organic solvent containing water and a coupling agent are mixed and stirred with an open kneader to remove water and the organic solvent, and then finely dispersed. Is preferred.

The method for dispersing the magnetic material in a binder described below is preferably a kneader, a pin mill, an annular mill, or the like, and more preferably a combination of a kneader and a pin mill, or a combination of a kneader and an annular mill. Examples of the kneader include an open type (open), a closed type, a continuous type, and a kneader such as a three-roll mill and a Labo Plast mill. Dispersion with a microfluidizer is also preferable.

The coercive force as a magnetic recording layer is 3.95 × 1
0 ⁴ A / m or more 2.37 × 10 ⁵ A / m or less, preferably 6.3
It is 2 × 10 ⁴ A / m or more and 1.185 × 10 ⁵ A / m or less.

The magnetic recording layer can be provided on the entire surface of the photographic support or in the form of stripes. If necessary, the magnetic recording layer applied on the support is subjected to a process of immediately orienting the magnetic material in the layer while drying, and then the formed magnetic recording layer is dried. There is a method using a permanent magnet or a solenoid coil to orient the magnetic material. The strength of the permanent magnet is preferably 1.58 × 10 ⁵ A / m or more, and 2.37 × 10 ⁵ A
/ m or more is particularly preferred. 3.95x for solenoid
It may be 10 ⁴ A / m or more. The timing of orientation during drying is desirably at a point where the residual solvent in the magnetic recording layer is 5% to 70%.

The binder for the magnetic recording layer and the like used in the present invention is a thermoplastic resin, a thermosetting resin, a reactive resin, an acid,
Alkali or biodegradable polymers, natural polymers (cellulose derivatives, sugar derivatives, etc.) and mixtures thereof can be used. Tg of the above resin is −40 ° C.
At 300 ° C., the mass average molecular weight is from 2,000 to 1,000,000, more preferably from 50,000 to 300,000.

Further, among the binders constituting the magnetic recording layer, cellulose esters having a substitution degree of 1.7 to 2.9 are preferably used. Particularly preferred are cellulose diacetate, cellulose acetate butyrate, and cellulose acetate propionate.

In the above binder, a polar group (epoxy group, —CO ₂ M, —OH, —NR ₂ , —NR ₃ X, —SO _{3
M, -OSO 3 M, -PO 3} M 2, -OPO 3 M 2, wherein M is hydrogen, an alkali metal or ammonium, may be different from each other when there are multiple M in one group , R is hydrogen or a saturated aliphatic hydrocarbon group)
May be introduced.

The above binders are used alone or in a mixture of several kinds, and may contain an epoxy-based, aziridine-based, or isocyanate-based crosslinking agent. The use of a cross-linking agent can enhance the layers themselves or the adhesion between the layers. The isocyanate-based crosslinking agent is a polyisocyanate compound having two or more isocyanate groups, for example, tolylene diisocyanate, hexamethylene diisocyanate, xylylene diisocyanate, naphthylene-
Isocyanates such as 1,5-diisocyanate, o-toluidine diisocyanate, isophorone diisocyanate, triphenylmethane diisocyanate, and reaction products of these isocyanates with polyalcohols (for example, reaction of 3 mol of tolylene diisocyanate with 1 mol of trimethylolpropane) Products), and polyisocyanates formed by condensation of these isocyanates. Particularly preferred among the above crosslinking agents are isocyanate-based crosslinking agents represented by the following general formula (4).

Formula (4):

Embedded image

In the general formula (4), n is preferably in the range of 0 to 50, more preferably 0 to 30, and still more preferably 0 to 10. The number n does not need to be single and may have a distribution. m is an integer of 1-2.
R ₁ , R ₂ and R ₃ are H, a saturated aliphatic hydrocarbon group (C 1 or more), or an aryl group (C 6 or more).

The preferred viscosity of such a crosslinking agent is 50 (c
P / 25 ° C) to 1000 (cP / 25 ° C). The preferable NCO content of such a crosslinking agent is 20 to 40.
%. More preferably, it is 25 to 35%. Commercial products of such a crosslinking agent include “Millionate MT” and “Millionate MR-10” manufactured by Nippon Polyurethane Co., Ltd.
0, "Millionate MR-200", "Millionate MR-300", "Millionate MR-400", "Sumijur 44V1" manufactured by Sumitomo Bayer Urethane Co., Ltd.
0 "(both are trade names).

The coating amount of the crosslinking agent is preferably in the range of 3 mg / m ^{2 to} 1000 mg / m ² ,
More preferably, it is 5 mg / m ² or more and 500 mg / m ² or less, and further preferably 10 mg / m ² or more and 300 mg.
/ M ² or less. In order for such a crosslinking agent to sufficiently perform crosslinking, it is preferable to perform heat drying at 50 ° C. or higher, preferably 70 ° C. or higher for 1 minute to 72 hours.

When the above-mentioned crosslinking agent is used, at least one of a tertiary amine compound, a metal salt compound, and a DBU (1,8-diaza-bicyclo [5,4,0] undecene-7) compound is used. By simultaneously using more than one kind, the rate of the crosslinking reaction between the layer itself or the layer and the layer adjacent thereto can be accelerated, and the crosslinking reaction time for improving the durability can be shortened.

The film support used in the present invention includes triacetyl cellulose (TAC), polyamide, polycarbonate, polyester and the like, and polyester is preferred. The preferred weight average molecular weight range for these polyesters is from about 5,000 to 200,000. The polyester used in the present invention has a Tg of 70.
C. to 170.degree. C., preferably 90.degree. C. to 150.degree. Specifically, the following compound examples can be shown.

Compound Example P-1: [terephthalic acid (TPA) / ethylene glycol (EG)) (100/100)] (PET) Tg = 80 ° C. P-2: [2,6-naphthalenedicarboxylic acid (NDCA) / Ethylene glycol (EG) (100/100)] (PEN) Tg = 119 ° C P-3: 2,6-NDCA / TPA / EG (50/50/100) Tg = 92 ° C P-4: PEN / PET (60/40) Tg = 95 ° C P-5: PEN / PET (80/20) Tg = 104 ° C.

Among the polyesters, preferred is 2,6-
A polyester containing naphthalenedicarboxylic acid, wherein 2,6-naphthalenedicarboxylic acid is included in all dicarboxylic acids.
It is a polyester containing 0 mol% or more. Among them, polyethylene-2,6-naphthalenedicarboxylate is particularly preferred. The thickness of the support is 80 to 115 μm.
m is preferable, and particularly preferably 85 to 105 μm. Further, the polyester support may be coated before coating the photosensitive layer.
0.1 to 150 at a temperature of 0 ° C. or more and a glass transition temperature or less.
When the heat treatment is performed for 0 hour, the rolled photosensitive material can be hardly curled.

For a TAC support, a plasticizer such as triphenyl phosphate, biphenyl diphenyl phosphate, dimethylethyl phosphate or the like is usually added. The support may contain a dye for the purpose of neutralizing the base color, preventing light piping, preventing halation, and the like. In order to firmly adhere a photographic layer (for example, a photosensitive silver halide emulsion layer, an intermediate layer, a filter layer, a magnetic recording layer, and a conductive layer) on these supports, a chemical treatment,
Mechanical treatment, corona discharge treatment, flame treatment, UV treatment,
After performing a surface activation treatment such as a high-frequency treatment, a glow discharge treatment, an active plasma treatment, a laser treatment, a mixed acid treatment, and an ozone oxidation treatment, a photographic emulsion may be directly applied to obtain an adhesive force, or the surface of these may be temporarily treated. After the treatment or without the surface treatment, an undercoat layer may be provided, and a photographic emulsion layer may be coated thereon.

The present invention may further contain a dye, a surfactant and the like. Furthermore, the incorporation of a silicone-based compound or a fluorine-based compound (fluorine-containing compound) into at least one layer on the transparent magnetic recording layer side of the transparent magnetic recording medium of the present invention makes it difficult for dirt to adhere to the medium surface, and This is preferable in that dirt is not easily transferred to the surface of the magnetic head, and magnetic input / output problems can be reduced. For example, FC-431 manufactured by Sumitomo 3M Ltd. is exemplified.

Particularly preferred examples of the silver halide photographic light-sensitive material having a transparent magnetic recording layer of the present invention include a color reversal film and a color negative film. In particular, a general color negative film is preferable. As the silver halide emulsion, usually, those subjected to physical ripening, chemical ripening and spectral sensitization are used. The effect of the present invention is particularly noticeable when an emulsion sensitized with a gold compound and a sulfur-containing compound is used. The additive used in such a process is Research Disclosure No. 17643 and N
o. 18716, and the relevant portions are mentioned later.

Known photographic additives that can be used in the present invention are also described in the above two Research Disclosures, and the relevant portions are shown in the following table.

Additive type RD17643 RD18716 1 Chemical sensitizer page 23, page 648, right column 2 Sensitivity enhancer Same as above 3 Spectral sensitizer, page 23-24, page 648 right column, supersensitizer 649, right column 4 sensitization White agent page 24 5 Antifoggant page 24-25 page 649 right column and stabilizer 6 light absorber, page 649 right column filter dye, page 25-26 page 650 left column UV absorber 7 stain inhibitor page 25 Right column 650 left to right column 8 Dye image stabilizer page 25 9 Hardening agent 26 page 651 left column 10 Binder 26 same as above 11 Plasticizer, lubricant 27 page 650 left column 12 Coating assistant, 26-27 Page 650 Right column Surfactant.

[0093]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, but it should not be construed that the invention is limited thereto.

<Example 1> 1) First layer and undercoat layer For a polyethylene naphthalate support having a thickness of 90 μm, the treatment atmosphere pressure was 26.6 Pa and the H ₂ O partial pressure in the atmosphere gas was 75 on both surfaces of each support. %, Discharge frequency 30 kHz
z, output 2500 W, processing intensity 0.5 kV · A · min / m ²
Glow discharge treatment. A coating solution having the following composition was applied as a first layer on the support at a coating amount of 5 mL / m ² using a bar coating method described in Japanese Patent Publication No. 58-4589.

Conductive fine particle dispersion (SnO ₂ / Sb ₂ O ₅ particle concentration 50 parts by mass 10% aqueous dispersion. Secondary aggregate having a primary particle diameter of 0.005 μm and an average particle diameter of 0.05 μm) Gelatin 0.5 parts by mass Water 49 parts by mass Polyglycerol polyglycidyl ether 0.16 parts by mass Poly (degree of polymerization 20) oxyethylene 0.1 parts by mass Sorbitan monolaurate.

Further, after the first layer was applied, it was wound around a stainless steel core having a diameter of 20 cm, and was heat-treated at 110 ° C. (Tg of the PEN support: 119 ° C.) for 48 hours, heat-treated and annealed. Thereafter, a coating solution having the following composition was applied to the opposite side of the first layer side of the support from the side opposite to the first layer side by a bar coating method at a coating amount of 10 mL / m ² .

Gelatin 1.01 part by mass Salicylic acid 0.30 part by mass Resorcin 0.40 part by mass Poly (degree of polymerization 10) oxyethylene nonylphenyl ether 0.11 part by mass Water 3.53 parts by mass Methanol 84.57 parts by mass n -Propanol 10.08 parts by weight.

Further, a second layer and a third layer, which will be described later, are sequentially coated on the first layer, and finally, a color negative photosensitive material having a later-described composition is overlaid on the opposite side to form a silver halide emulsion. A transparent magnetic recording medium with a layer was produced.

2) Second layer (transparent magnetic recording layer) Dispersion of magnetic material Co-coated γ-Fe ₂ O ₃ magnetic material (average major axis length: 0.25 μm)
m, S _BET : 39 m ² / g, Hc: 6.565 × 10 ⁴ A /
^{m, σs: 77.1Am 2 /kg,σr:37.4Am 2} / kg) 11
00 parts by mass, 220 parts by mass of water and 165 parts by mass of a silane coupling agent [exemplified compound (6-3)] were added and kneaded well in an open kneader for 3 hours. The coarsely dispersed viscous liquid was dried at 70 ° C. for 24 hours to remove water,
Heat treatment was performed at 110 ° C. for 1 hour to produce surface-treated magnetic particles.

Further, the mixture was kneaded again in an open kneader for 4 hours according to the following formulation.

The above-mentioned surface-treated magnetic particles 855 g Diacetyl cellulose 25.3 g Methyl ethyl ketone 136.3 g Cyclohexanone 136.3 g Further, the mixture was finely dispersed in a sand mill (1/4 G sand mill) at 2000 rpm for 4 hours according to the following formulation. did. As the medium, glass beads having a diameter of 1 mm were used.

The above kneading liquid 45 g diacetyl cellulose 23.7 g methyl ethyl ketone 127.7 g cyclohexanone 127.7 g Further, a magnetic substance-containing intermediate liquid was prepared according to the following formulation.

Preparation of Intermediate Solution Containing Magnetic Material 674 g of the above magnetic fine particle dispersion solution 24280 g (solid content: 4.34%, solvent: methyl ethyl ketone / cyclohexanone = 1/1) Cyclohexanone 46 g.

After mixing these, the mixture was stirred with a disper to prepare a "magnetic substance-containing intermediate liquid".

An α-alumina abrasive dispersion of the present invention was prepared according to the following formulation.

<a> Sumicorundum AA-1.5 (average primary particle diameter 1.5 μm, specific surface area 1.3 m ² / g) Preparation of Particle Dispersion Sumicorundum AA-1.5 152 g Exemplified compound (6 -6) 0.48 g (KBM903 manufactured by Shin-Etsu Chemical Co., Ltd.) 227.52 g of diacetylcellulose solution (solid content 4.5%, solvent: methyl ethyl ketone / cyclohexanone = 1/1).

Using the above-mentioned formula, a ceramic-coated sand mill (１ ／ G sand mill) was used at 800 rpm.
m for 4 hours. As the media, zirconia beads having a diameter of 1 mm were used.

<B> Colloidal silica particle dispersion (fine particles) "MEK-ST" manufactured by Nissan Chemical Industries, Ltd. was used.

This is a dispersion liquid of colloidal silica having an average primary particle diameter of 0.015 μm using methyl ethyl ketone as a dispersion medium, and has a solid content of 30%.

Preparation of Second Layer Coating Solution The above magnetic substance-containing intermediate solution 19053 g Diacetyl cellulose solution 264 g (solid content: 4.5%, solvent: methyl ethyl ketone / cyclohexanone = 1/1) Colloidal silica dispersion “MEK-ST” <dispersion Liquid b> (Amount of coating described in Table 2 in terms of solid content) (Solid content: 30%) AA-1.5 dispersion <Dispersion a> 12 g Millionate MR-400 (manufactured by Nippon Polyurethane Co., Ltd.) Diluent 203 g (solid content 20%, diluent solvent: methyl ethyl ketone / cyclohexanone = 1/1) methyl ethyl ketone 170 g cyclohexanone 170 g.

The coating solution obtained by mixing and stirring the above was applied by a wire bar so as to have an application amount of 29.3 mL / m ² . Drying was performed at 110 ° C. The thickness of the dried magnetic layer was 1.0 μm.

3) Third Layer (Surface Sliding Layer) Preparation of Dispersion Stock Solution of Slip Agent The following solution A was heated and dissolved at 100 ° C., added to Solution A, dispersed with a high-pressure homogenizer, and the stock solution of the slip agent was dispersed. Produced.

Liquid A Exemplified compound (3-14) 285 parts by mass Exemplified compound (5-6) 285 parts by mass nC ₅₀ H ₁₀₁ O (CH ₂ CH ₂ O) ₁₆ H Cyclohexanone 830 parts by mass Liquid I Cyclohexanone 8600 parts by mass Part 5.7 parts by mass of sodium di-2-ethylhexylsulfosuccinate.

Preparation of Spherical Inorganic Particle Dispersion A spherical inorganic particle dispersion <c> was prepared according to the following formulation.

Isopropyl alcohol 93.54 parts by mass Surface coating compound (as shown in Table 2) 5.53 parts by mass Spherical inorganic particles (as shown in Table 2) 88.00 parts by mass To add.

Diacetone alcohol 252.93 parts by mass.

While the above solution was cooled with ice and stirred, an ultrasonic homogenizer “SONIFIER450 (BRANSON) was used.
(Manufactured by Co., Ltd.)) for 3 hours.

The resulting pre-spherical inorganic particle dispersion was treated with 300
g, weigh and subdivide, and add anionic surfactant di-2-
Add 2 g of sodium ethylhexyl sulfosuccinate and add 3 g
The mixture was stirred for 0 minutes and dissolved to complete a spherical inorganic particle dispersion <c>.

Preparation of Spherical Organic Polymer Particle Dispersion A spherical organic polymer particle dispersion <d> was prepared according to the following formulation.

Cyclohexanone 60 parts by mass Methyl ethyl ketone 60 parts by mass 80 parts by mass of spherical organic polymer particles (as shown in Table 2).

While the above solution was cooled with ice and stirred, an ultrasonic homogenizer “SONIFIER450 (BRANSON) was used.
(Manufactured by Co., Ltd.) for 90 minutes to complete a spherical organic polymer particle dispersion <d>.

Preparation of Third Layer Coating Solution The following was added to 542 g of the above-mentioned slip agent dispersion stock solution to prepare a third layer coating solution.

Third layer solvent (solvent in Table 2) 5950 g Cyclohexanone 176 g Ethyl acetate 1700 g Dispersion of spherical inorganic particles <c> (Amount of solid content to be applied in Table 2) Spherical organic polymer particles Dispersion <d> (Amount to be applied in Table 2 by solid content) FC431 2.65 g (manufactured by 3M, solid content 50%, solvent: ethyl acetate) BYK310 5.3 g (BYK Chem Japan ( Co., Ltd., solid content 25%).

The above third layer coating solution was applied on the second layer by 10.3
Apply with a wire bar at an application amount of 5 mL / m ² , 110 ° C
, And further dried at 97 ° C. for 3 minutes.

Each layer having the following composition was coated on the emulsion layer undercoat surface of the support having the back layer and the emulsion layer undercoat surface prepared in this manner to produce a multilayer color light-sensitive material.

(Composition of photosensitive layer) The main materials used for each layer are classified as follows: ExC: cyan coupler UV: ultraviolet absorber ExM: magenta coupler HBS: high boiling point organic solvent ExY: yellow coupler H: Gelatin hardener ExS: Sensitizing dye The number corresponding to each component indicates the coating amount in g / m ² , and the silver halide indicates the coating amount in terms of silver. However, with respect to the sensitizing dye, the coating amount is shown in mol units per mol of silver halide in the same layer.

(Sample 101) First Layer (First Antihalation Layer) Black Colloidal Silver Silver 0.155 Silver Iodobromide Emulsion P Silver 0.01 Gelatin 0.87 ExC-1 0.002 ExC-3 0.002 Cpd-2 0.001 HBS-1 0.004 HBS-2 0.002.

Second Layer (Second Antihalation Layer) Black Colloidal Silver Silver 0.066 Gelatin 0.407 ExM-1 0.050 ExF-1 2.0 × 10 ^-3 HBS-1 0.074 Solid Disperse Dye ExF -2 0.015 solid disperse dye ExF-3 0.020.

Third layer (intermediate layer) Silver iodobromide emulsion O 0.020 ExC-2 0.022 polyethyl acrylate latex 0.085 gelatin 0.294.

Fourth layer (low-sensitivity red-sensitive emulsion layer) Silver iodobromide emulsion A silver 0.323 ExS-1 5.5 × 10 ^-4 ExS-2 1.0 × 10 ^-5 ExS-3 2.4 × 10 ^-4 ExC-1 0.109 ExC-3 0.044 ExC-4 0.072 ExC-5 0.011 ExC-6 0.003 Cpd-2 0.025 Cpd-4 0.025 HBS-10 .17 gelatin 0.80.

Fifth Layer (Medium Speed Red Sensitive Emulsion Layer) Silver iodobromide emulsion B silver 0.28 silver iodobromide emulsion C silver 0.54 ExS-1 5.0 × 10 ^-4 ExS-2 1.0 × 10 ^-5 ExS-3 2.0 × 10 ^-4 ExC-1 0.14 ExC-2 0.026 ExC-3 0.020 ExC-4 0.12 ExC-5 0.016 ExC-6 0.007 Cpd-2 0.036 Cpd-4 0.028 HBS-1 0.16 Gelatin 1.18.

Sixth Layer (High Sensitive Red Sensitive Emulsion Layer) Silver Iodobromide Emulsion D Silver 1.47 ExS-1 3.7 × 10 ^-4 ExS-2 1 × 10 ^-5 ExS-3 1.8 × 10 ^-4 ExC-1 0.18 ExC-3 0.07 ExC-6 0.029 ExC-7 0.010 ExY-5 0.008 Cpd-2 0.046 Cpd-4 0.077 HBS-1 0.25 HBS-2 0.12 gelatin 2.12.

Seventh layer (intermediate layer) Cpd-1 0.089 Solid disperse dye ExF-4 0.030 HBS-1 0.050 Polyethyl acrylate latex 0.83 Gelatin 0.84.

Eighth Layer (Layer that Gives Layered Effect to Red Sensitive Layer) Silver Iodobromide Emulsion 0.560 ExS-6 1.7 × 10 ^-4 ExS-10 4.6 × 10 ^-4 Cpd-4 0.030 ExM-2 0.096 ExM-3 0.028 ExY-1 0.031 HBS-1 0.085 HBS-3 0.003 Gelatin 0.58.

Ninth layer (low-sensitivity green-sensitive emulsion layer) Silver iodobromide emulsion F silver 0.39 silver iodobromide emulsion G silver 0.28 silver iodobromide emulsion H silver 0.35 ExS-4 2.4 × 10 ^-5 ExS-5 1.0 × 10 ^-4 ExS-6 3.9 × 10 ^-4 ExS-7 7.7 × 10 ^-5 ExS-8 3.3 × 10 ^-4 ExM-2 0.36 ExM-3 0.045 HBS-1 0.28 HBS-3 0.01 HSB-4 0.27 Gelatin 1.39.

Tenth Layer (Medium Speed Green Sensitive Emulsion Layer) Silver Iodobromide Emulsion I Silver 0.45 ExS-4 5.3 × 10 ^-5 ExS-7 1.5 × 10 ^-4 ExS-8 6.3 × 10 ^-4 ExC-6 0.009 ExM-2 0.031 ExM-3 0.029 ExY-1 0.006 ExM-4 0.028 HBS-1 0.064 HBS-3 2.1 × 10 ^-3 Gelatin 0.44.

Eleventh layer (high-sensitivity green-sensitive emulsion layer) Silver iodobromide emulsion I silver 0.19 silver iodobromide emulsion J silver 0.80 ExS-4 4.1 × 10 ^-5 ExS-7 1.1 × 10 ^-4 ExS-8 4.9 × 10 ^-4 ExC-6 0.004 ExM-1 0.016 ExM-3 0.036 ExM-4 0.020 ExM-5 0.004 ExY-5 0.003 ExM-2 0.013 Cpd-3 0.004 Cpd-4 0.007 HBS-1 0.18 polyethyl acrylate latex 0.099 gelatin 1.11.

Twelfth Layer (Yellow Filter Layer) Yellow Colloidal Silver Silver 0.047 Cpd-1 0.16 Solid Disperse Dye ExF-5 0.020 Solid Disperse Dye ExF-6 0.020 Oil-soluble Dye ExF-7 010 HBS-1 0.082 gelatin 1.057.

Thirteenth layer (low-sensitivity blue-sensitive emulsion layer) Silver iodobromide emulsion K silver 0.18 silver iodobromide emulsion L silver 0.20 silver iodobromide emulsion M silver 0.07 ExS-9 4.4 × 10 ^-4 ExS-10 4.0 × 10 ^-4 ExC-1 0.041 ExC-8 0.012 ExY-1 0.035 ExY-2 0.71 ExY-3 0.10 ExY-4 0.005 Cpd-2 0.10 Cpd-3 4.0 × 10 ⁻³ HBS-1 0.24 Gelatin 1.41.

Fourteenth layer (high-sensitivity blue-sensitive emulsion layer) Silver iodobromide emulsion N silver 0.75 ExS-9 3.6 × 10 ^-4 ExC-1 0.013 ExY-2 0.31 ExY-30 0.05 ExY-6 0.062 Cpd-2 0.075 Cpd-3 1.0 × 10 ^-3 HBS-1 0.10 Gelatin 0.91.

Fifteenth layer (first protective layer) Silver iodobromide emulsion O silver 0.30 UV-1 0.21 UV-2 0.13 UV-3 0.20 UV-4 0.025 F-180 0.0009 HBS-1 0.12 HBS-4 5.0 × 10 ^-2 gelatin 2.3.

Sixteenth layer (second protective layer) H-1 0.40 B-1 (diameter 1.7 μm) 5.0 × 10 ^-2 B-2 (diameter 1.7 μm) 0.15 B-30 .05 S-1 0.20 gelatin 0.75.

Further, in order to improve the storability, processing property, pressure resistance, fungicidal / antibacterial properties, antistatic property and coatability of each layer, W-1 to W-5, B-4 to B -6, F
-1 to F-18, and iron salts, lead salts, gold salts, platinum salts,
It contains palladium, iridium, ruthenium and rhodium salts. Further, 8.5 × 10 ^-3 g per mol of silver halide to the coating solution of the eighth layer, a 7.9 × 10 ^-3 grams of calcium in the 11th layer was added with an aqueous solution of calcium nitrate to form Sample .

Table 1 below shows the AgI content, grain size, surface iodine content and the like of the emulsions represented by the above abbreviations. The surface iodine content can be determined by XPS as follows. The sample was cooled to −115 ° C. in a vacuum of 1 × 10 ⁻⁶ Pa or less, and MgKα was used as a probe X-ray with an X-ray source voltage of 8 μm.
Irradiation with kV, X-ray current 20 mA, Ag3d5 / 2, B
r3d and I3d5 / 2 electrons were measured, the integrated intensity of the measured peak was corrected by a sensitivity factor, and the iodine content of the surface was determined from the intensity ratio.

[0145]

[Table 1]

In Table 1, (1) Emulsions L to O were subjected to reduction sensitization during the preparation of grains using thiourea dioxide and thiosulfonic acid according to the examples of JP-A-2-191938. (2) Emulsions A to O were subjected to gold sensitization, sulfur sensitization and selenium sensitization in the presence of the spectral sensitizing dye described in each photosensitive layer and sodium thiocyanate according to the examples of JP-A-3-237450. Have been.

(3) The preparation of tabular grains is described in
According to the example of 58 426, low molecular weight gelatin is used. (4) Dislocation lines described in JP-A-3-237450 are observed in the tabular grains using a high-pressure electron microscope.

Preparation of Dispersion of Organic Solid Disperse Dye ExF-2 shown below was dispersed by the following method. That is, water 2
1.7 ml and 3 ml of a 5% aqueous solution of sodium p-octylphenoxyethoxyethoxyethoxyethanesulfonate and 0.5 g of a 5% aqueous solution of 0.5 g of p-octylphenoxypolyoxyethylene ether (polymerization degree 10) were put into a 700 ml pot mill. , Dye ExF-
2 and 5.0 g of zirconium oxide beads (diameter 1 mm)
500 ml was added and the contents were dispersed for 2 hours. For this dispersion, a BO type vibration ball mill manufactured by Chuo Koki was used. After the dispersion, the contents were taken out, added to 8 g of a 12.5% aqueous gelatin solution, and the beads were removed by filtration to obtain a gelatin dispersion of the dye. The average particle size of the dye fine particles is 0.4
It was 4 μm.

Similarly, solid dispersions of ExF-3, ExF-4 and ExF-6 were obtained. The average particle diameter of the fine dye particles is 0.24 μm, 0.45 μm, and 0.52 μm, respectively.
m. ExF-5 was dispersed by the microprecipitation dispersion method described in Example 1 of EP-A-549,489A. The average particle size was 0.06 μm.

The compounds used for forming each of the above layers are as shown below.

[0151]

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[0152]

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[0153]

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[0154]

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[0155]

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[0156]

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[0157]

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[0158]

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[0159]

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[0160]

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[0161]

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[0162]

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[0163]

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[0164]

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[0165]

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[0166]

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[0167]

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Table 2 shows the entire prepared samples.

[0169]

[Table 2]

Evaluation of Coated Product (Prepared Sample) <1> Measurement of Haze Degree (Transparency) In order to evaluate the dispersion stability of the spherical inorganic particles in the slip agent-containing coating solution (third layer coating solution), an undercoat was applied. The haze degree of the sample to which the layer and the first to third layers were applied was measured.

The measurement was performed using a haze meter “VGS-1001DP” manufactured by Nippon Denshoku Industries Co., Ltd. so that the incident light was incident from the transparent magnetic recording layer side.

Evaluation Criteria for Coated Samples Immediately After Preparation of Coating Solution The judgment of each haze degree measured on the sample applied immediately after preparation of the coating solution was represented by the following symbols.

[0173]

[Table 3]

Note that the haze degree is defined as follows. T = D + PT PT: Parallel transmittance H = (D / T) × 100 (%) T: Total transmittance D: Diffusion H: Haze (turbidity).

Evaluation Criteria for Coated Samples After 2 Weeks After Preparation of Coating Solution After preparing the coating solution for the third layer, the mixture was prepared, aged for 2 weeks at room temperature, re-stirred with a disper, and then coated in exactly the same manner. The determination of each haze difference between the haze and the sample applied without aging was represented by using the following symbols.

[0176]

[Table 4]

<2> Evaluation of magnetic input / output performance The prepared sample was slit into a width of 24 mm, then assembled into a cartridge and processed to obtain a 40-sheet film for an APS camera. The film was exposed with an APS camera “EPION300” manufactured by Fuji Photo Optical Co., Ltd., and the photographing conditions were magnetically recorded on the transparent magnetic recording layer. Thereafter, the liquid conductivity was 165 in the CN-16X chemical prescription of Fuji Photo Film.
Development processing was performed using an N4 solution of ⁰ μScm ⁻¹ . The developing machine is a cine-type automatic developing machine F manufactured by Fuji Photo Film Co., Ltd.
NCP-900 was used. These processing conditions are conditions in which the concentration of the processing solution is set to be much higher than usual and the amount of the processing solution attached to the film surface is increased. The sample after the development was wound into a cartridge using an attacher “AT-100” manufactured by Fuji Photo Film Co., Ltd. Next, using a negative carrier “NC240S” manufactured by Fuji Photo Film Co., Ltd., 50 films were continuously read at normal temperature and 40% RH, and the magnetic performance was evaluated. The above-mentioned evaluation conditions are such that dirt mainly composed of a dried developing solution left on the surface of the transparent magnetic recording layer is transferred and accumulated on the surface of the magnetic head when the sample is running, and the signal output is reduced due to space loss loss, resulting in magnetic reading. Adopted because an error occurs. The reproduction output is the ideal reproduction output when the magnetic head is clean.
When the output decreased by 30%, the output was reduced (magnetic error).

[0178]

[Table 5]

[0179] Dirt on the head after 50 runs was observed with a fiber scope. The criteria are as follows.

[0180]

[Table 6]

<3> Evaluation of slipperiness The slipperiness measurement method of the present invention is based on the method of testing the coefficient of friction of a plastic film according to JIS K 7125.
This is modified from the point of practicality. The procedure is as follows.

Under the environmental conditions of 23 ° C. and 65% RH, TOYO
A flat PVC plate is fixed to the moving sample stage of BALDWIN's TENSILON UTM-II-20 by protruding horizontally, and a 35 × 200 mm size sample aged for 40 minutes under the same conditions is backed on this PVC plate. I stuck it face up. 20 × 75mm
A sample of the same size was stuck on a 500 g metal plate having a smooth surface with a double-sided tape with the silver halide emulsion layer side outside and the emulsion layer side down (emulsion side and back side The sample was placed on the back surface sample on the above-mentioned PVC plate, away from the TENSILON body. TENS for metal platen
Attach a hook with a thread to a small ring attached to the center of one side on the ILON side, and connect the other end of the thread to a load cell fixed to the top of the main unit via a pulley (fixed to a moving sample stage) (The yarn bends into an L-shape) and the zero point was taken with no load. The moving sample stage of TENSILON was moved downward at a speed of 2 cm / min, and the friction force applied to the load cell when the metal plate moved to the pulley side was recorded by a recorder, and the friction coefficient was determined from this. The static friction coefficient μS was determined from the maximum frictional force temporarily applied at the start of the movement, and the dynamic friction coefficient μk was determined from the average of the stable frictional forces applied during the subsequent movement.

<4> Evaluation of Scratch Resistance This evaluation is based on the fact that, when used as a silver halide photographic material, the surface of the transparent magnetic recording layer side and the surface of the silver halide emulsion layer rub against each other (from the inside of the cartridge). It is assumed that the surface of the silver halide emulsion layer is not damaged. In order to increase the sensitivity, considerable forced conditions were employed.

Evaluation Method / Conditions After conditioning for 2 hours at a temperature of 25 ° C. and a humidity of 60% RH,
1cm to friction terminal of EIDON-14 dynamic friction coefficient measuring instrument
Attach a smooth SUS plate on all sides.

Affixed to the SUS plate so that the emulsion layer faced outward, the load was 500 g, and the running speed was 100 mm / sec.
c, rubbing against another transparent magnetic recording layer underneath in 10 reciprocations.

The scratches on the emulsion layer surface were judged as follows based on "visual observation" and "whether it was reflected in the print".

[0187]

[Table 7]

Table 3 summarizes the results of evaluating the samples in Table 2 in this manner.

[0189]

[Table 8]

From Table 3, it is found that the samples 101 to 103 (comparative) not using the spherical inorganic particles and the spherical organic polymer particles of the present invention have a static friction coefficient μS and a dynamic friction coefficient μk of 0.2.
Although it is less than 5 and the haze value is low, it is found that the contamination of the magnetic head is remarkably bad and the magnetic information reading performance is greatly deteriorated accordingly. On the other hand, samples 104 to 125 using the spherical inorganic particles and the spherical organic polymer resin particles of the present invention.
Although the haze value was slightly higher, the values of the static friction coefficient μS and the dynamic friction coefficient μk were 0.25 or more, indicating that the magnetic information readability was clearly excellent.

When the coating amount of the spherical inorganic particles increases, the haze increases, the friction coefficient increases, and the scratch resistance deteriorates (107 vs. 108). If the coating amount is small, the effect of improving the magnetic recording readability is weak (106). In addition, an increase in the particle size causes an increase in the number of friction systems and deterioration of the scratch resistance (110, 110).
111), it can be seen that the reduction of the particle size weakens the effect of improving the magnetic recording readability (109). The increase / decrease (115, 116, 114) of the coating amount of the organic polymer particles does not affect the abrasion resistance, but the others are the same as the inorganic particles.

It can be seen from the haze change after two weeks of aging that the surface coating of the spherical inorganic particles with the silane coupling agent (103 to 102) is effective for the aging stability of the coating solution.

If the coating amount of the colloidal silica particles is small (15 mg / m ² ), the effect of reading magnetic information is weak, and if too large (200 mg / m ² ), the effect is weak and the emulsion layer side surface is easily damaged. Understand.

From the above results, it was found that the magnetic information readability effect was enhanced when the backing layer having the particle structure and the slipping agent of the present invention was controlled. These have been clarified for the first time by the present invention, and it is clear that the effects of the present invention exist.

Example 2 The surface sliding layer of Example 1 (third
Layer), the content of the anionic surfactant sodium di-2-ethylhexyl sulfosuccinate added by dispersion of the higher fatty acid ester-based slip agent present in the layer is twice or four times that of the comparative type. A surface slip layer coating solution was prepared in exactly the same manner as in Example 1 except that the amount was increased eight times. Using these four types of coating liquids, continuous coating was performed for 12 hours in the same manner as in Example 1, and then samples were taken from the last part of each coating roll to obtain samples 201 to 204. For the evaluation, the uniformity of the coating amount in the width direction during coating (lateral direction to the coating progress direction) was visually evaluated.

The evaluation criteria are as follows.

[0197]

[Table 9]

The evaluation results are shown below.

[0199]

[Table 10]

From the above results, it can be seen that when the amount of sodium di-2-ethylhexylsulfosuccinate is increased, the coated surface quality hardly deteriorates even after long-time coating.

Other Samples of the Present Invention In all of the above-described samples of the present invention, the amount of the magnetic substance applied to the second layer was set to 0.1.
And the emulsion layer is a reversal color emulsion layer.
854 In the same manner as in the case of the sample 101 of Example 1, except that the developing process is carried out by the developing method for a color reversal photosensitive material as described in JP-A-2-854 Example 1, When performed similarly to the invention sample,
Exactly the same improvement effect (result) was obtained, and an excellent silver halide photographic light-sensitive material having a transparent magnetic recording layer, having both magnetic input / output performance and transparency, was obtained.

[0202]

According to the present invention, it is possible to provide an excellent transparent magnetic recording medium and a silver halide photographic material having a transparent magnetic recording layer, which have both reliable magnetic input / output performance and transparency.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G11B 5/72 G11B 5/72 F term (Reference) 2H023 CD08 CD09 FA09 GA00 GA03 HA04 5D006 AA03 AA04 AA05 BA10 BA19 CC01 CC03

Claims (6)

[Claims] 1. A support comprising a transparent magnetic recording layer containing at least one magnetic particle and a surface slip layer on one side of a support, and at least one photosensitive layer on a surface of the transparent magnetic recording layer opposite to the support. In a silver halide light-sensitive material having a neutral silver halide emulsion layer, high humidity, low speed measurement conditions (23
(° C., 65% RH, 2 cm / min), the static friction coefficient μS and the dynamic friction coefficient μk between the surface on the transparent magnetic recording layer side and the surface on the silver halide emulsion layer side are represented by the following relational expressions (1) and (2). A silver halide photographic material characterized by satisfying the following. (1) 0.25 ≦ μS ≦ 0.50 (2) 0.25 ≦ μk ≦ 0.50 2. The surface sliding layer according to claim 1, wherein (1) a higher fatty acid ester slipping agent, (2) spherical inorganic particles having a Mohs hardness of 6 to 8, (3) spherical organic polymer particles, and (4) diacetone alcohol. And at least one solvent selected from the group consisting of, 1-acetoxy-2-methoxyethane, ethylene glycol diacetate, methyl acetoacetate and ethyl acetoacetate, each containing 100 μL / m ² or less. 3. The silver halide photographic light-sensitive material described in 1. above. 3. The halogen according to claim 1, wherein the transparent magnetic recording layer contains inorganic fine particles having a primary particle size of 1 nm to 50 nm in a range of 10 mg / m ^{2 to} 200 mg / m ^2. Silver halide photographic material. 4. The silver halide photographic material according to claim 2, wherein said spherical inorganic particles are amorphous silica particles. 5. The halogenation according to claim 2, wherein the spherical organic particles are polysiloxane particles, benzoguanamine particles, melamine resin particles, or methacrylic acid resin particles. Silver photographic photosensitive material. 6. The method according to claim 1, wherein the transparent magnetic recording layer contains an alumina abrasive having a particle size substantially higher than the average surface protrusion height of the spherical inorganic particles or the spherical organic polymer particles. Any one of claims 1 to 5
6. The silver halide photographic light-sensitive material according to item 1.