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1. 发明专利

DE10329236A1 未知
公开(公告)号：DE10329236A1
公开(公告)日：2004-06-17
申请号：DE10329236
申请日：2003-06-27
申请人： HITACHI MAXELL
发明人： KODA TETSUNORI , YANO AKIRA , FUJITA ENJI , ONUMA TSUYOSHI , MATSUNUMA SATOSHI
IPC分类号： G11B5/65 , G11B5/64 , G11B5/66 , G11B5/73 , G11B5/738 , G11B5/84 , G11B5/851 , G11B5/68

2. 发明专利

AU7963100A Magnetic recording medium, method for producing the same, and magnetic recorder 未知
公开(公告)号：AU7963100A
公开(公告)日：2001-05-08
申请号：AU7963100
申请日：2000-10-30
申请人： HITACHI MAXELL
发明人： KIRINO FUMIYOSHI , OHTA NORIO , WAKABAYASHI KOUICHIROU , TAKEUCHI TERUAKI , SAKAMOTO HARUMI , SEKINE MASAKI , AWANO HIROYUKI , YANO AKIRA , MATSUNUMA SATOSHI , INABA NOBUYUKI , KODA TETSUNORI
IPC分类号： G11B5/00 , G11B5/64 , G11B5/66 , G11B5/74 , G11B5/82 , G11B5/02
摘要： A magnetic recording medium comprises an information-recording film and a ferromagnetic film on a substrate. The information-recording film is composed of, for example, an amorphous ferrimagnetic material having perpendicular magnetization. Further, the ferromagnetic film is composed of a magnetic material which has saturation magnetization larger than that of the information-recording film. Accordingly, the leak magnetic flux from the ferromagnetic film is larger than that from the information-recording film. The magnetic recording medium and a magnetic recording apparatus are obtained, which are excellent in thermal stability and which are preferred to perform super high density recording.

3. 发明专利

JP2002260209A AMORPHOUS MAGNETIC RECORDING MEDIUM, ITS MANUFACTURING METHOD, AND MAGNETIC RECORDING/REPRODUCING APPARATUS 失效
公开(公告)号：JP2002260209A
公开(公告)日：2002-09-13
申请号：JP2001057001
申请日：2001-03-01
申请人： HITACHI LTD , HITACHI MAXELL
发明人： HONDA MITSUTOSHI , YAMAMOTO HIROTAKA , NAITO TAKASHI , HIRANO TATSUMI , NAKAZAWA TETSUO , KIRINO FUMIYOSHI , TAKEUCHI TERUAKI , YANO AKIRA , INABA NOBUYUKI , MATSUNUMA SATORU
IPC分类号： G11B5/65 , G11B5/64 , G11B5/66 , G11B5/72 , G11B5/73 , G11B5/738 , G11B5/84 , G11B5/851
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium with the microscopic magnetic domain size corresponding to high density recording. SOLUTION: This magnetic recording medium comprises a magnetic domain formation layer 2 formed on a substrate 1 wherein a continuous phase with 1-3 kinds of spherical isolated phases existing therein or such 1-3 kinds of spherical isolated phases existing in piles therein, and an amorphous magnetic layer 3 wherein a minute magnetic domain structure is formed.

4. 发明专利

JPH09228054A MAGNETIC RECORDING MEDIUM, ITS MANUFACTURE AND MANUFACTURING DEVICE THEREFOR 失效
公开(公告)号：JPH09228054A
公开(公告)日：1997-09-02
申请号：JP2940796
申请日：1996-02-16
申请人： HITACHI LTD , HITACHI MAXELL
发明人： INABA HIROSHI , KATAOKA HIROYUKI , FUJIMAKI SHIGEHIKO , YANO AKIRA , MIZUMURA TETSUO , KUSADA HIDEO , ASANO MICHIO
IPC分类号： C30B29/04 , C23C16/26 , C23C16/27 , C23C16/50 , G11B5/66 , G11B5/72 , G11B5/84
摘要： PROBLEM TO BE SOLVED: To eliminate the damage to the filmy base material at the time of subjecting the filmy base material to plasma treatment by enhancing the film formation rate at the time of forming a diamond-like carbon film on a filmy base material with a CVD (chemical vapor deposition) method in the manufacture of this recording medium. SOLUTION: In the manufacturing device of this recording medium, a plasma treatment device is provided with a vacuum vessel 6 having a plasma treatment vessel, a means for supplying a gaseous reactant 2 to the plasma treatment vessel and a mechanism for introducing a filmy base material 16 into the plasma treatment vessel and transferring the filmy base material 16 from the plasma treatment vessel. At this time, a high-frequency voltage 1 is applied to a counter electrode 3 placed opposite to the filmy base material 16 that is introduced onto an earth electrode 8, to retain a plasma in the plasma treatment vessel. By using the counter electrode 3 having a sufficiently larger area than that of the earth electrode 8 within the plasma treatment vessel, high energy ions are allowed to flow out to the surface to be treated of the filmy base material 16, and also, the capacitance of the device structure can be minimized by incorporating the counter electrode 3 into the vacuum vessel 6 as a part of the vessel 6, and further, a part of the surface of a magnetic layer formed on the other surface of the filmy base material 16 is electrically earthed with a >=100mm contact area.

5. 发明专利

JP2000076638A Magnetic recording medium and its production 审中-公开
标题翻译：磁记录媒体及其制作
公开(公告)号：JP2000076638A
公开(公告)日：2000-03-14
申请号：JP24023898
申请日：1998-08-26
申请人： Hitachi Ltd , Hitachi Maxell Ltd , 日立マクセル株式会社 , 株式会社日立製作所
发明人： OGAWA YOICHI , YANO AKIRA , KITAGAKI NAOKI , SHIRAI HIROSHI , TAKAYAMA TAKANOBU
IPC分类号： G11B5/66 , G11B5/64 , G11B5/65 , G11B5/84
摘要： PROBLEM TO BE SOLVED: To enable superior C/N characteristics by forming a metallic magnetic thin film comprising crystal grains of a specified grain diameter formed on a substrate so that the grain diameter of the crystal grains is increased as it goes from the substrate side of the thin film toward the outer surface side.
SOLUTION: A metallic magnetic thin film 10 is formed from crystal grains of ≤20 nm average grain diameter so that the grain diameters of the Co crystal grains 11 and Co-O crystal grains 12 are stepwise increased as they go from the substrate side of the thin film 10 toward the outer surface side. The grain diameter is controlled and formed by adjusting the temperature of a can while optionally combining the intrusion of an inert gas as well. By increasing the grain diameter of the crystal grains near the outer surface of the thin film 10, the crystal magnetic anisotropy of the grains is enhanced and output is increased. Because of the small crystal grains on the substrate side, magnetic domains are made small, noise is reduced and a C-N ratio is increased. The tilt direction of the columnar crystal grains of a lower metallic magnetic layer 10a and an upper metallic magnetic thin film 10b may be changed.
COPYRIGHT: (C)2000,JPO
摘要翻译：要解决的问题：为了通过形成包含在基板上形成的特定晶粒直径的金属磁性薄膜，使得晶粒的晶粒直径从基板侧的基板侧开始增加，从而实现优异的C / N特性该薄膜朝向外表面侧。解决方案：金属磁性薄膜10由<= 20nm平均粒径的晶粒形成，使得Co晶粒11和Co-O晶粒12的晶粒直径从基底侧逐渐增加薄膜10朝向外表面侧。通过调节罐的温度来控制和形成颗粒直径，同时可选地组合惰性气体的侵入。通过增加薄膜10的外表面附近的晶粒的粒径，晶粒的晶体磁各向异性提高，输出增加。由于基板侧的晶粒小，所以磁畴变小，噪声降低，C-N比增大。可以改变下金属磁性层10a和上金属磁性薄膜10b的柱状晶粒的倾斜方向。

6. 发明专利

JPH0453017A PERPENDICULAR MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH0453017A
公开(公告)日：1992-02-20
申请号：JP15978190
申请日：1990-06-20
申请人： HITACHI LTD , HITACHI MAXELL
发明人： YANO AKIRA , YOSHIDA KAZUYOSHI , TAKAYAMA TAKANOBU
IPC分类号： G11B5/66 , C08L67/02 , G11B5/64 , G11B5/65 , G11B5/73
摘要： PURPOSE:To improve durability of the medium by forming a Co-partially oxidized film so that the inner tensile stress remaining in the film is a specified value or less and that the ferromagnetic metal grains are needle-like grains having specified short axial length or shorter. CONSTITUTION:The inner tensile stress remaining in the film is specified to dyn/cm , and dyn/cm inner stress can be realized by forming ferromagnetic metal grains needle-like grains having Pa. Thereby, the perpendicular magnetic recording medium having excellent sliding resistance can be obtained without providing a protective film.

7. 发明专利

JP2002083417A MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING DEVICE USING THE SAME 失效
公开(公告)号：JP2002083417A
公开(公告)日：2002-03-22
申请号：JP2000271236
申请日：2000-09-07
申请人： HITACHI MAXELL , HITACHI LTD
发明人： KIRINO FUMIYOSHI , OTA NORIO , TAKEUCHI TERUAKI , YANO AKIRA , SAKAMOTO HARUMI , WAKABAYASHI KOICHIRO , MATSUNUMA SATORU , INABA NOBUYUKI , HONDA MITSUTOSHI , YAMAMOTO HIROTAKA , NAKAZAWA TETSUO , NAITO TAKASHI
IPC分类号： C23C14/06 , C23C14/35 , G11B5/64 , G11B5/65 , G11B5/738
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium capable of highly precisely defining the position of a magnetic domain formed on an amorphous magnetic film and having high reliability and to provide a magnetic recording device provided with the magnetic recording medium. SOLUTION: The magnetic recording medium 10 is provided with a base film 2 and the magnetic film 3 on a substrate 1. The base film 2 is constituted of a two- dimensionally and regularly arrayed hexagonal crystal grain and a grain boundary part enclosing the crystal grain. Recessed and projected parts are regularly formed on the surface of the base film by the crystal grain and the grain boundary. The recessed and projected parts corresponding to recessed and projected parts of the base film are formed on the magnetic film which is formed on the base film having such recessed and projected parts. The recessed and projected parts of the magnetic film function as pinning sites for preventing the movement of a magnetic domain wall. The magnetic domain formed on the magnetic film is highly precisely demarcated in a desired position. As a result, the magnetic recording medium having a reduced error and high reliability can be provided, since the fluctuation of the magnetic domain is reduced. Thus, >60 Gb/in2 super high density recording can be realized.

8. 发明专利

JPH0765303A MAGNETIC RECORDING METHOD AND MAGNETIC RECORDER 失效
公开(公告)号：JPH0765303A
公开(公告)日：1995-03-10
申请号：JP21060993
申请日：1993-08-25
申请人： HITACHI LTD , HITACHI MAXELL
发明人： TAKAYAMA TAKANOBU , YOSHIDA KAZUYOSHI , SUZUKI MIKIO , KATO YASUHIRO , KITAGAKI NAOKI , YANO AKIRA , OGAWA YOICHI , KITAGAMI OSAMU
IPC分类号： G11B5/02 , G11B5/09
摘要： PURPOSE:To provide a magnetic recording method and magnetic recorder capable of improving a reproduced output/medium noise ratio. CONSTITUTION:A magnetic recording medium having an axis of easy magnetization in the vertical direction or diagonal direction and a ring head having a gap length g1 are relatively moved at a speed v and recording currents of polarities inverting at every generation of a '1' of binary data are supplied to this ring head to magnetically record the binary data on the magnetic recording medium. The polarities of the recording currents are inverted with the neutral level time T for decreasing the recording currents without inverting the polarities in-between in this magnetic recording method. As a result, the reproduced output/medium noise ratio of even the conventional magnetic recording medium and magnetic head is improved. This method is particularly useful for high-density recording.

9. 发明专利

JP2017091777A 非水二次電池用正極材料及びその製造方法、並びにその非水二次電池用正極材料を用いた非水二次電池用正極及びそれを用いた非水二次電池审中-公开
公开(公告)号：JP2017091777A
公开(公告)日：2017-05-25
申请号：JP2015219713
申请日：2015-11-09
申请人：日立マクセル株式会社 , Hitachi Maxell Ltd
发明人： YANO AKIRA , KIKUZONO YASUO , KANO MASAHIRO , SAKABE HIKARI
IPC分类号： H01M4/525 , C01G51/00 , H01M4/36
摘要：【課題】高容量で、高電圧下でも充放電サイクル特性に優れた非水二次電池を提供する。【解決手段】本発明の非水二次電池用正極材料を構成する酸化物粒子は、バルク部と、前記バルク部を被覆する表層部とを含み、前記バルク部は、コバルト酸リチウムからなり、前記表層部は、Alを含む酸化物からなり、前記非水二次電池用正極材料を充放電した場合、前記コバルト酸リチウムのCoO6八面体のスタッキングに由来するX線回折線において、放電時の回折ピークの最大強度をIdとし、充電時の回折ピークの最大強度をIcとし、その比をIc/Idとすると、Ic/Id

10. 发明专利

JP2012243696A Nonaqueous secondary battery 有权
标题翻译：非标次级电池
公开(公告)号：JP2012243696A
公开(公告)日：2012-12-10
申请号：JP2011115348
申请日：2011-05-24
申请人： Hitachi Maxell Energy Ltd , 日立マクセルエナジー株式会社
发明人： YANO AKIRA , SASAKI YUJI , KOJIMA KATSUNORI , KITA FUSAJI
IPC分类号： H01M4/505 , H01M4/131 , H01M4/36 , H01M4/525 , H01M4/62 , H01M10/052 , H01M10/0566 , H01M10/44
CPC分类号： B82Y30/00 , H01M4/131 , H01M4/1391 , H01M4/366 , H01M4/505 , H01M4/625 , H01M4/628 , H01M10/0525 , Y02T10/7011
摘要： PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery capable of exerting excellent charge/discharge cycle characteristics even if charged at high voltage.SOLUTION: A nonaqueous secondary battery includes: a positive electrode having a mixture layer containing a lithium-containing composite oxide as an active material; a negative electrode; a separator; and a nonaqueous electrolyte. In the nonaqueous secondary battery, a surface of the active material layer or a surface of the mixture layer is covered with a polyvalent organic metal salt, specifically (favorably) with a fluorine-containing polyvalent organic lithium salt.

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