公开(公告)号：JP2002322270A

公开(公告)日：2002-11-08

申请号：JP2001127200

申请日：2001-04-25

Applicant: SONY CORP

Inventor： KOBAYASHI TAKESHI ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KURIHARA KENICHI ,  IWAMOTO HIROSHI ,  TSUBOI HISANORI

IPC: C07C69/62 ,  C08G65/332 ,  C10M105/54 ,  C10M107/38 ,  C10N30/00 ,  C10N30/06 ,  C10N40/18 ,  G11B5/71

Abstract: PROBLEM TO BE SOLVED: To provide a lubricant which holds excellent lubricity under various conditions for use, maintains the lubrication effect over a long time, can give excellent running properties, abrasion resistance, durability and the like, and is used for recording media. SOLUTION: For example, a C18 H37 -CH(CH2 COOH)COO-Rf-OCOCH(CH2 COOH)-C18 H37 (Rf is a fluoropolyether group having an average mol.wt. of 2,000) is used as a lubricant for magnetic recording media.

公开(公告)号：JP2002168790A

公开(公告)日：2002-06-14

申请号：JP2000363154

申请日：2000-11-29

Applicant: SONY CORP

Inventor： KAMEI TAKAHIRO ,  KISHII NORIYUKI ,  WATANABE HARUO

IPC: G01N31/00 ,  G01N21/78 ,  G01N31/22 ,  G01N33/00

Abstract: PROBLEM TO BE SOLVED: To provide a detector having a simple structure capable of detecting reductive air pollutant suspended in the air by a simple operation. SOLUTION: This detector 1 comprises a detection member 10 formed by carrying basic aqueous solution of a silver-ammonia complex compound having discoloring property by being reduced on the surface of a base material 12 such as a plastic sheet, a glass plate or the like in the form of a detection chemical (detection layer) 11. For example, formaldehyde in the air is detected by using the detector, to thereby enable to cope precisely with an indoor environmental pollution problem called house-sick syndrome. As an execution sample, the detection member is formed by applying dispersion liquid acquired by dispersing a particlate aluminum oxide uniformly in the basic aqueous solution of the silver-ammonia complex compound on the glass plate by a spinner. When the detection member is stood still in the air atmosphere having the formaldehyde including concentration of 10 ppm, a white color on the surface of the detection member is changed into a black color after ten minutes.

公开(公告)号：JP2002167530A

公开(公告)日：2002-06-11

申请号：JP2000363151

申请日：2000-11-29

Applicant: SONY CORP

Inventor： KAMEI TAKAHIRO ,  KISHII NORIYUKI ,  KURIHARA KENICHI ,  KOBAYASHI TAKESHI ,  IWAMOTO HIROSHI ,  TSUBOI HISANORI

IPC: B42D15/10 ,  C09D11/00 ,  C12N15/09 ,  G06K17/00 ,  G06K19/10

Abstract: PROBLEM TO BE SOLVED: To produce a DNA ink which is used for the identification of an individual and can produce a thin film having an unforgeable surface pattern for the identification, and a medium for the identification. SOLUTION: An aqueous solution of a DNA molecule is mixed with a cationic surfactant to produce a polyion complex compound of the DNA and the cationic surfactant through the reaction of the phosphate group of the DNA molecule with the acidic group of the cationic surfactant. The polyion complex compound is dissolved in an organic medium to give a DNA ink. The DNA ink is cast on a base plate to form a thin film of the polyion complex compound. The surface pattern on the thin film is so complicated that the use of this DNA ink can realize the preparation of a thin film having an unforgeable surface pattern for the identification of an individual.

公开(公告)号：JP2001143255A

公开(公告)日：2001-05-25

申请号：JP2000256430

申请日：2000-08-25

Applicant: SONY CORP

Inventor： KURIHARA KENICHI ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KOBAYASHI TAKESHI ,  IWAMOTO HIROSHI ,  TSUBOI HISANORI

IPC: G11B5/84

Abstract: PROBLEM TO BE SOLVED: To analyze the distribution state and optimum existence amount of a lubricant in a magnetic recording medium regardless of the material quality of the lubricant. SOLUTION: The adhesive strength generated between a lubricant layer 5 of the magnetic recording medium 1 which is deposited with at least a magnetic metallic film 3 on one main surface of a nonmagnetic base 2 and has the lubricant layer 5 on the outermost layer of the one main surface on the side formed with the magnetic metallic film 3 and a probe is measured and the surface existence amount of the lubricant in the lubricant layer 5 and the distribution stage thereof are analyzed by the standard deviation of the adhesive strength.

公开(公告)号：JPH1139646A

公开(公告)日：1999-02-12

申请号：JP19284497

申请日：1997-07-17

Applicant: SONY CORP

Inventor： KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KURIHARA KENICHI ,  KOBAYASHI TAKESHI ,  IWAMOTO HIROSHI ,  MATSUZAWA NOBUYUKI

IPC: C09K19/06 ,  C09K19/32 ,  C09K19/34 ,  C10M105/06 ,  C10M105/20 ,  C10M105/70 ,  C10N40/18 ,  C10N50/10 ,  G11B5/64 ,  G11B5/71 ,  G11B5/72 ,  G11B5/725 ,  G11B5/735 ,  G11B5/738

Abstract: PROBLEM TO BE SOLVED: To provide a recording medium excellent in continuous sliding durability, low in tackiness and high in meniscus force by incorporating liquid crystal molecules having a specified tricyclic structure as a lubricant into the outermost layer. SOLUTION: The outermost layer of a magnetic recording medium having magnetic layers on a nonmagnetic supporting body contains a lubricant containing liquid crystal molecules having a tricyclic structure expressed by the general formula of L-W-X-Y or L-W-X-Y -R. In the formulae, W, X, Y , Y are atomic groups having cyclic structures, L, R are cyano groups, nitro groups, aldehyde groups, hydroxyl groups, amino groups, amide groups, ether groups, carboxyl groups, carboxyl groups, oxycarboxyl groups, halogen groups, alkyl groups, allyl groups, hydroxyimino groups, or allyl groups, alkyl groups, oxycarboxyl groups, carboxyl groups, carbonyl groups, ether groups, amide groups and amino groups with substitution of groups above described. The lubricant may be applied on the back coating layer or added in the magnetic layer.

公开(公告)号：JPH1139643A

公开(公告)日：1999-02-12

申请号：JP19284197

申请日：1997-07-17

Applicant: SONY CORP

Inventor： KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KURIHARA KENICHI ,  KOBAYASHI TAKESHI ,  IWAMOTO HIROSHI ,  MATSUZAWA NOBUYUKI

IPC: C09K19/06 ,  C09K19/32 ,  C09K19/34 ,  C10M105/18 ,  C10M105/20 ,  C10M105/56 ,  C10M105/68 ,  C10N40/18 ,  C10N50/10 ,  G11B5/64 ,  G11B5/71 ,  G11B5/72 ,  G11B5/725 ,  G11B5/735 ,  G11B5/738

Abstract: PROBLEM TO BE SOLVED: To provide a recording medium excellent in continuous sliding, durability, low in tackiness and high in meniscus force by incorporating liquid crystal molecules having a specified monocyclic structure as a lubricant into the outermost layer. SOLUTION: The outermost layer of a magnetic recording medium having magnetic layers on a nonmagnetic supporting body contains a lubricant containing liquid crystal molecules having a monocyclic structure expressed by a general formula of L-X -R or L-X . In the formulae, X , X are atomic groups having cyclic structures, L, R are cyano groups, nitro groups, aldehyde groups, hydroxyl groups, amino groups, amide groups, ether groups, carbonyl groups, carboxyl groups, oxycarboxyl group, halogen groups, alkyl groups, allyl groups, hydroxyimino groups, or allyl groups, alkyl groups, oxycarboxyl groups, carboxyl groups, carbonyl groups, ether groups, amide groups and amino groups with substitution of groups above described. The lubricant is applied on the surface of a magnetic material or added in the magnetic layer.

公开(公告)号：JPH10289441A

公开(公告)日：1998-10-27

申请号：JP9997197

申请日：1997-04-17

Applicant: SONY CORP

Inventor： KOBAYASHI TAKESHI ,  KAMEI TAKAHIRO ,  KISHII NORIYUKI ,  KAWANA TAKAHIRO ,  MORI TAKAO ,  YAMADA YUKARI

IPC: C10M105/34 ,  C10N40/18 ,  G11B5/64 ,  G11B5/72 ,  G11B5/725

Abstract: PROBLEM TO BE SOLVED: To improve running performance, wear resistance and durability by forming a carbon film on a magnetic layer and holding a branched carboxylic acid monoester as a lubricant to secure excellent lubricating property under a various use condition and to maintain the lubricating effect over a long period. SOLUTION: When the carbon film is formed on the magnetic layer and the branched carboxylic acid monoester is applied on the carbon film as the lubricant, a lubricating film is formed by the adsorption of an ester of a polar group part of the lubricant molecule on the carbon film and the cohesive force between long chain hydrocarbon groups of the hydrophobic group part. The branched carboxylic acid monoester has a structure of a chemical formula containing hydrophobic groups R1-R3, R1CH(R2)COOR3. The lubricating effect is maintained without the degradation of properties at a low temp. and high temp. and the use of a fluorine based harmful material causing environment pollution is suppressed to prevent adverse effect against environment.

公开(公告)号：JPH10241152A

公开(公告)日：1998-09-11

申请号：JP4446997

申请日：1997-02-27

Applicant: SONY CORP

Inventor： KURIHARA KENICHI ,  KISHII NORIYUKI ,  SASAKI YUICHI

IPC: C09D5/23 ,  G11B5/702 ,  G11B5/708

Abstract: PROBLEM TO BE SOLVED: To improve dispersion characteristic of magnetic powder in a magnetic layer and realize excellent electro-magnetic conversion characteristic and running durability by containing class 3 amino group of the polarity group into the binder of magnetic layer mainly composed of binder and magnetic powder and then adding, in the optimum amount, the dikentone compound of the magnetic powder surface processing agent. SOLUTION: A magnetic layer is formed, on a non-magnetic carrier, by coating of magnetic paint mainly composed of the binder and magnetic power of the specific surface area of 35m /g or more. The class 3 amine group of polarity group, matel and diketone compound having the complex forming function are contained in the binder as the powder surface processing agent. The diketone compound is expressed by the formula I, any one of R1 to R3 has carboxyl group, the others are selected from H, halogen and alkyl group, aryl group, complex aromatic group replaced by these H and halogen and these are deposited by absorption to the magnetic powder surface to improve dispersion characteristic of powder. Therefore, amount of addition is set to 1.0 to 5.0 part by weight. Moreover, class 3 amino group is expressed by the formula II or III. Amount of contents is set to 0.001 to 1mmol/g to acquire the mutual effect between the interfaces of binder and surface processing agent.

公开(公告)号：JPH10214418A

公开(公告)日：1998-08-11

申请号：JP1653597

申请日：1997-01-30

Applicant: SONY CORP

Inventor： YAMAGA MINORU ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO

IPC: G11B5/708 ,  G11B5/41 ,  G11B5/72 ,  G11B5/73 ,  G11B5/842 ,  G11B5/704

Abstract: PROBLEM TO BE SOLVED: To prevent the adhesion of foreign matter on a magnetic head and to remove the foreign matter adhered to the magnetic head. SOLUTION: An intermediate layer and a magnetic layer are formed on a nonmagnetic base. In this case, a soln. prepd. by adding 0.1 to 1.0% chelating agent to a solvent is applied on the surface of the magnetic layer. The chelating agent is added at 1.0×10 to 1.0×10 g/m to the coating material for the intermediate layer at the time of forming the intermediate layer, by which the added chelating agent is oozed through the holes of the magnetic layer. The existence amt. of the chelating agent existing on the surface of the magnetic material is specified to 1.0 to 100mg/m .

公开(公告)号：JPH10188238A

公开(公告)日：1998-07-21

申请号：JP35633096

申请日：1996-12-25

Applicant: SONY CORP

Inventor： ICHIMURA TAKESHI ,  CHINO HISAYOSHI ,  SUZUKI AKIRA ,  KAMEI TAKAHIRO ,  WATANABE HARUO ,  KISHII NORIYUKI

IPC: G11B5/41 ,  B65H67/02

Abstract: PROBLEM TO BE SOLVED: To provide a magnetic recording/reproducing device provided with a magnetic head cleaning roller capable of effectively removing metal oxide produced on a magnetic head surface causing the level down by magnetic recording. SOLUTION: This device 1 is provided with a nonwoven fabric laminated cleaning roller 4 attached to the drum support member 6 of this device 1 and cleaning a magnetic head and a chelating tank 2 filled up with a liquid chelating agent and cotton 3 attached to the drum support member 6 and for adding the liquid chelating agent 5 for removing the metal oxide produced on the magnetic head surface to the magnetic head cleaning roller 4. At this time, the liquid chelating agent 5 arrives at the cotton 3 by a capirally phenomenon to stick to a cleaning roller 8. When this cleaning roller 8 is in contact with the magnetic head, the metal oxide produced on the surface of the magnetic head becomes complex to be allowed to hardly remain on the magnetic head.