公开(公告)号：JP2001291228A

公开(公告)日：2001-10-19

申请号：JP2000101368

申请日：2000-03-31

Applicant: SONY CORP

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

IPC: G11B5/72 ,  G11B5/41 ,  G11B5/708

Abstract: PROBLEM TO BE SOLVED: To prevent stuck materials from being generated at a magnetic head, to restrain spacing loss and to prevent an error rate from increasing even when the sliding time of the magnetic head is prolonged or the scanning speed is accelerated in order to record information for a long time. SOLUTION: This magnetic recording medium has at least a magnetic layer formed on a nonmagnetic support and holds a sticking prevention agent containing oxime derivative.

公开(公告)号：JP2001143244A

公开(公告)日：2001-05-25

申请号：JP2000256429

申请日：2000-08-25

Applicant: SONY CORP

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

IPC: G11B5/725

Abstract: PROBLEM TO BE SOLVED: To decrease a friction coefficient and to improve a traveling property and durability. SOLUTION: The standard deviation of the adhesive force between a lubricating layer 5 and a probe 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 lubricating layer 5 of the outermost layer on the one main surface on the side formed with the magnetic metallic film 3, is specified to >=0.06.

公开(公告)号：JPH1196542A

公开(公告)日：1999-04-09

申请号：JP25669897

申请日：1997-09-22

Applicant: SONY CORP

Inventor： KOBAYASHI TAKESHI ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO ,  KURIHARA KENICHI

IPC: C10M105/40 ,  C10N40/18 ,  G11B5/64 ,  G11B5/71 ,  G11B5/72 ,  G11B5/725

Abstract: PROBLEM TO BE SOLVED: To obtain a medium which keeps a lubricating effect under various use conditions, which has a small coefft. of friction, excellent travelling property, wear resistance and durability by holding a lubricant comprising a diester monocarboxylic acid compd. in a magnetic layer on a nonmagnetic supporting body. SOLUTION: Relating to a magnetic record medium having a carbon film on a magnetic layer, a lubricant is applied on the carbon film by coating. When a diester monocarboxylic acid compd. is applied as a lubricant on the carbon film, the carboxylic acid or ester of the polar groups of the lubricant is adsorbed on the carbon film while aggregation force between long-chain hydrocarbon groups in the hydrophobic part form a lubricant. Therefore, the lubricant is firmly held on the carbon film and is made extremely thin, and an enough lubricating effect can be kept for a long time. The diester monocarboxylic acid compd. is preferably a compd. expressed by the chemical formula (wherein R , R are hydrophobic functional groups).

公开(公告)号：JPH10289436A

公开(公告)日：1998-10-27

申请号：JP9997297

申请日：1997-04-17

Applicant: SONY CORP

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

IPC: C10M105/38 ,  C10N40/18 ,  G11B5/64 ,  G11B5/66 ,  G11B5/72 ,  G11B5/725 ,  G11B5/84

Abstract: PROBLEM TO BE SOLVED: To exhibit lubricating effect excellent in running performance, wear resistance and durability under various use conditions by forming a carbon film on a magnetic layer and holding a triester having 3 long chain hydrocarbon groups as a lubricant. SOLUTION: The triester having 3 long chain hydrocarbon groups is one of hidrocarbons expressed by formula I (each of R1, R2, R3, R4, R5, R6 and R7 is a hydrophobic group) and formula II (each of l, m, n, p, r and s is 0-28 and q is 0-10). When the triester having 3 long chain hydrocarbon groups 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 power between the long chain hydrocarbon groups of the hydrophobic group part. Friction coefficient is lowered and shuttle durability and still durability are improved by the strong adsorption of the ester on the surface of the carbon film.

公开(公告)号：JPH10228638A

公开(公告)日：1998-08-25

申请号：JP2706497

申请日：1997-02-10

Applicant: SONY CORP

Inventor： KURIHARA KENICHI ,  KISHII NORIYUKI ,  KAMEI TAKAHIRO

IPC: C09D5/23 ,  C09D7/12 ,  G11B5/708

Abstract: PROBLEM TO BE SOLVED: To provide a coating type magnetic recording medium having high electromagnetic conversion characteristics and travelling durability which is suitable for high-density recording. SOLUTION: A magnetic layer is formed by applying a magnetic coating material essentially comprising a ferromagnetic powder and a binder on a nonmagnetic supporting body. The magnetic layer contains a diketone compd. having ester bonds expressed by formula and contains at least one of sulfonate groups, sulfonates, tertiary amino groups and quaternary ammonium salt. In the formula, at least one of R to R has ester bonds and others are selected from hydrogen, halogens, and alkyl groups, aryl groups and heteroaromatic groups with substituents of hydrogen or halogens.

公开(公告)号：JPH10188267A

公开(公告)日：1998-07-21

申请号：JP399497

申请日：1997-01-13

Applicant: SONY CORP

Inventor： KAMEI TAKAHIRO ,  KISHII NORIYUKI ,  SUZUKI JUNKO ,  WATANABE HARUO ,  KOBAYASHI TAKESHI ,  KURIHARA KENICHI ,  MIYAZAKI TAKAHIRO

IPC: G11B5/708 ,  G11B5/41 ,  G11B5/64 ,  G11B5/72 ,  G11B5/73

Abstract: PROBLEM TO BE SOLVED: To suppress the generation of burned matter at a magnetic head and spacing loss and to prevent the increase of an error rate by holding a compd. having a pyridine skeleton and having >=2 coordination seats in a burning preventive agent. SOLUTION: Ligand has complex formability with metal atoms therefore, if the ligand is held in the magnetic recording medium, complex forming reaction arises with the metal oxide formed on the magnetic head surface to each other and the metal oxide turns to a complex which is easily desorbable. The ligand is, however, coordinated and adsorbed on the magnetic powder contained in the magnetic layer as well, by which the complex forming reaction with the metal oxide is hindered and the effect of removing the metal oxide of the ligand is impaired. If, thereupon, a titanate coupling agent and carboxylic acid are made to coexist therein, these compds. are adsorbed on the surfaces of the magnetic powder and the coordination and adsorption of the ligand to the magnetic powder are hindered and consequently, the ligand contributes to the complex formation with the metal oxide of the magnetic head. The accumulation of the burned matter on the magnetic head does not arise any more.

公开(公告)号：JPH10149537A

公开(公告)日：1998-06-02

申请号：JP30323796

申请日：1996-11-14

Applicant: SONY CORP

Inventor： KAMEI TAKAHIRO ,  KISHII NORIYUKI ,  SUZUKI JUNKO ,  WATANABE HARUO ,  KOBAYASHI TAKESHI ,  KURIHARA KENICHI

IPC: C09K3/00 ,  C09D5/23 ,  G11B5/41 ,  G11B5/708 ,  G11B5/72

Abstract: PROBLEM TO BE SOLVED: To prevent deposition of a burnt matter on a magnetic head even with longer sliding time and higher scanning speed, to suppress the spacing loss and to prevent increase in the error rate by incorporating a preventing agent against burning which contains an aromatic nitroso compd. into a magnetic recording medium. SOLUTION: This medium is produced by forming a magnetic layer on a nonmagnetic base body and the medium contains a preventing agent against burning which contains an aromatic nitro compd. selected from compds. expressed by the formula I, formula II and formula III. In the formulae, R to R are alkyl groups, aryl groups or heteroaromatic groups with substituents of hydrogen atoms, halogen atoms, hydroxyl groups, nitro groups, carboxyl groups, etc. This aromatic nitroso compd. has an ability to form a complex with metal atoms so that the complexing reaction is caused between the metal oxide on the magnetic head surface and the polyacid compd. The obtd. complex easily drops from the magnetic head surface. Thereby, metal oxides can be removed from a magnetic head, which prevents accumulation or deposition of a burnt matter on a magnetic head.

公开(公告)号：JPH1088014A

公开(公告)日：1998-04-07

申请号：JP23901196

申请日：1996-09-10

Applicant: SONY CORP

Inventor： MATSUZAWA NOBUYUKI ,  SHOJI HIROSHI ,  KISHII NORIYUKI

IPC: G03F7/004 ,  C09B29/06 ,  G02B5/20 ,  G02B5/22 ,  H01L27/14

Abstract: PROBLEM TO BE SOLVED: To provide a new magenta diazo coloring matter improved in light resistance and a solid-state image pickup device equipped with a color filter containing it and having a longer life. SOLUTION: This coloring matter is one represented by formula I (wherein R1 to R4 are each H or a suitable substituent; R18 is an electron accepting group; R17 (when R15 and R16 are each of formula II) or R16 (when R16 and R17 are each of formula II) is a weak electron donating group or an electron accepting group; R6 to R11 are each OH, an electron accepting group, a weak electron donating group, H, or of formula II, depending on the relation to each other; and R19 and R20 are each H, alkyl or substituted alkyl). It has a chemical structure of which the positions of substituents in the diazo moiety where the electron density is low and the reaction with oxygen molecules hardly proceeds are determined by theoretical calculation with a supercomputer.

公开(公告)号：JPH09165391A

公开(公告)日：1997-06-24

申请号：JP34810195

申请日：1995-12-15

Applicant: SONY CORP

Inventor： KISHII NORIYUKI ,  KIJIMA YASUNORI

IPC: H05B33/14 ,  C07F3/02 ,  C07F3/06 ,  C09K11/06 ,  H01L51/50 ,  H05B33/12

Abstract: PROBLEM TO BE SOLVED: To obtain a new binuclear metallic complex useful as a material for an electroluminescent element excellent in brightness and chromaticity by reaction of a ligant comprising phenylbenzoxazole or quinoline moiety having a hydroxy group with a metallic salt. SOLUTION: This complex is a new binuclear metallic complex of formula: M2 (L -O)m (L -O)4-m [M is a group II A or group II B element in the periodic table; L and L have both a hydroxy group and an aromatic and nitrogen atom in the same molecule and are mutually different ligands originating from the formula A (R is an atom adjacent to an aromatic nitrogen atom and/or may form a cyclic structure in combination with a part of R ;R is an aromatic nitrogen atom and/or forms a ring in combination with an atom adjacent to this atom);(m) is 0-4] and useful as a material having a high fluorescent property and an excellent electron transportability for preparing an optical element such as an organic electroluminescent element or the like luminous in high brightness at various chromaticities.

公开(公告)号：JPH08315982A

公开(公告)日：1996-11-29

申请号：JP13861895

申请日：1995-05-12

Applicant: SONY CORP

Inventor： KISHII NORIYUKI ,  ANDORIYUU HADOSON

IPC: H05B33/14 ,  C09K11/06 ,  H01L51/50 ,  H05B33/12

Abstract: PURPOSE: To generate a plurality of tones with the same element according to applied voltage regardless of a simple layer structure by containing a specified aluminium medium in a light emitting layer and/or an electron transporting layer. CONSTITUTION: An organic EL element 2 as organic light emitting element consists of an ITO transparent electrode 5, a Hall transporting layer 4, a light emitting layer 3, an electron transporting layer 2, and a negative electrode 1, which are successively formed on a transparent base 6. An aluminium complex represented by the formula Al(L-O)2 S is contained in the light emitting layer 3 and/or the electron transporting layer 2. In the formula, L represents a ligand, and X represents a halogen atom, or a pair anion such as alkoxy group or phenoxy group.