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21. 发明专利

JPH06187637A MAGNETIC RECORDING MEDIUM, ITS PRODUCTION AND MAGNETIC RECORDING DEVICE 失效
公开(公告)号：JPH06187637A
公开(公告)日：1994-07-08
申请号：JP33832392
申请日：1992-12-18
申请人： HITACHI LTD
发明人： YAKU SHINAN , SHIROISHI YOSHIHIRO , HOSOE YUZURU , TAKESHITA MASATOSHI , ISHIKAWA AKIRA , OZAKI AKIRA , YAMAMOTO TOMOO , KATO YUKIO
IPC分类号： G11B5/66 , G11B5/73 , G11B5/82 , G11B5/84
摘要： PURPOSE:To obtain a recording medium having high reliability suitable for high-density recording by forming a magnetic recording medium in such a manner that the wavelength spectrum of surface roughness shows the max. in each of several wavelength regions. CONSTITUTION:Both surfaces of a 130mmphi NiP-plated Al-Mg alloy substrate 11 rotating at 500rpm in the direction of arrow A in the figure are in contact with polishing cloths 12, 12' pressed with polyurethane press rollers 13, 13'. A slurry-state complex abrasive powder 14, 14' consisting of 10wt.% diamond powder having 1mum average particle size and CeO2 having 0.1mum average particle size dispersed in a hydrophilic solvent is supplied through nozzles 15, 15' to between the substrate and the polishing cloth. The polishing cloth 12, 12' is traveled in the direction of arrow B at 1cm/sec speed and moved back and forth by three times in the direction of arrow C to polish the whole surface of the substrate 11. Thus, a substrate for a magnetic disk is obtd. The obtd. magnetic recording medium has such a surface state that wavelength spectrum of surface roughness shows the max. in each of several regions of wavelength between 1nm and 200mum.

22. 发明专利

JPH035000B2 失效
公开(公告)号：JPH035000B2
公开(公告)日：1991-01-24
申请号：JP13973387
申请日：1987-06-05
申请人： HITACHI LTD
发明人： HOTSUTA ATSUO , KATO YUKIO , ISOBE TERUO
IPC分类号： G11C11/414 , G11C11/34

23. 发明专利

JPH01297712A ELECTRONIC DEVICE 失效
公开(公告)号：JPH01297712A
公开(公告)日：1989-11-30
申请号：JP12934588
申请日：1988-05-26
申请人： HITACHI LTD
发明人： KATO YUKIO , WATANABE YUTAKA
IPC分类号： G06F1/26 , G06F1/00
摘要： PURPOSE:To set the optimum input reference voltage for every LSI and IC by providing an input reference voltage generation circuit to set the input reference voltage value of every LSI and IC packaged on a substrate individually corresponding to the packaging positions of the LSI and the IC. CONSTITUTION:Voltage drop by a wiring resistor on the substrate 1 depends on distance, and the drop of an input voltage at an input LSI(A) neighboring to an output side LSI(C) is decreased however, that of the input voltage at an input LSI(B) separated from the output side LSI(C) is increased. Taking into consideration such phenomenon, an input reference voltage generating LSI5 generates the input reference voltages VBBA and VBBB which become an intermediate voltage between an input H voltage and an input L voltage at every LSI(A) and LSI(B), and supplies them to the LSI(A) and the LSI(B) individually.

24. 发明专利

JPS6329359B2 失效
公开(公告)号：JPS6329359B2
公开(公告)日：1988-06-13
申请号：JP10915179
申请日：1979-08-29
申请人： HITACHI LTD
发明人： HOTSUTA ATSUO , KATO YUKIO , ISOBE TERUO
IPC分类号： G11C7/22 , G11C11/34 , G11C11/407 , G11C11/414

25. 发明专利

JPS6262066B2 失效
公开(公告)号：JPS6262066B2
公开(公告)日：1987-12-24
申请号：JP6391279
申请日：1979-05-25
申请人： HITACHI LTD
发明人： HOTSUTA ATSUO , KATO YUKIO , ODAKA MASANORI
IPC分类号： G11C11/411 , G11C11/41 , H01L21/8229 , H01L27/10 , H01L27/102

26. 发明专利

JPS6025830B2 失效
公开(公告)号：JPS6025830B2
公开(公告)日：1985-06-20
申请号：JP8738577
申请日：1977-07-22
申请人： HITACHI LTD
发明人： HOTSUTA ATSUO , KATO YUKIO , PPONMA NORYUKI , YAMAGUCHI KUNIHIKO
IPC分类号： G11C11/41 , G11C11/40 , G11C11/414

27. 发明专利

JP2011118973A Thermally assisted magnetic recording head 审中-公开
标题翻译：热辅助磁记录头
公开(公告)号：JP2011118973A
公开(公告)日：2011-06-16
申请号：JP2009274437
申请日：2009-12-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NANBA IRIZO , MATSUMOTO TAKUYA , KATO YUKIO
IPC分类号： G11B5/31 , G11B5/02 , G11B5/60
CPC分类号： G11B5/314 , G11B5/3133 , G11B5/3136 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： PROBLEM TO BE SOLVED: To provide a thermally assisted magnetic recording head that prevents a near-field light generating element from beings damaged by heat generated when laser light is absorbed to the near-field light generating element.
SOLUTION: A thermally-assisted magnetic recording head comprises a slider 3 and a magnetic head part 2. The magnetic head part 2 includes a recording magnetic pole 21, a playback element 22, a coil 23, a near-field light generating element 24, and a waveguide 25. A metal film having high heat conductivity is formed on both sides in width direction of the magnetic head part of the near-field light generating element 24. The use of the metal film as a radiator plate ensures to prevent the temperature of the near-field light generating element 24 from becoming locally high.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种热辅助磁记录头，其防止当激光被近场光产生元件吸收时产生的热量使近场光产生元件受到损伤。解决方案：热辅助磁记录头包括滑块3和磁头部分2.磁头部分2包括记录磁极21，重放元件22，线圈23，近场光产生元件24和波导25.在近场光产生元件24的磁头部分的宽度方向的两侧形成有导热性高的金属膜。使用金属膜作为散热板来确保防止近场光产生元件24的温度变得局部高。版权所有（C）2011，JPO＆INPIT

28. 发明专利

JP2011113595A Thermally assisted magnetic head slider and head gimbal assembly 有权
标题翻译：热辅助磁头滑块和头盔组件
公开(公告)号：JP2011113595A
公开(公告)日：2011-06-09
申请号：JP2009267549
申请日：2009-11-25
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATO YUKIO , NANBA IRIZO
IPC分类号： G11B5/60 , G11B5/31
CPC分类号： G11B5/314 , G11B5/1278 , G11B5/6088 , G11B2005/0005 , G11B2005/0021
摘要： PROBLEM TO BE SOLVED: To reduce an increase in coupling loss caused by heat generated by a semiconductor laser and prevent occurrence of contamination in a thermally assisted magnetic head slider and a head gimbal assembly. SOLUTION: The thermally assisted magnetic head slider includes an air bearing slider 1, a metal film 2, and a semiconductor laser unit 3. The metal film 2 having an aperture 16 in a part through which light from the semiconductor laser unit 3 passes is disposed between a surface opposite to an air bearing surface of the air bearing slider 1 and the semiconductor laser unit 3, and a material 17 for adjusting a refractive index is provided in the aperture 16. A bottom surface of the metal film 2 including the material 17 for adjusting the refractive index is disposed to be in close contact with a surface opposite to the air bearing surface side of the air bearing slider, and the semiconductor laser unit 3 is disposed to be in close contact with a top surface of the metal film 2 including the material 17 for adjusting the refractive index. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了减少由半导体激光器产生的热量引起的耦合损耗的增加，并且防止热辅助磁头滑动器和头部万向节组件中的污染的发生。解决方案：热辅助磁头滑块包括空气轴承滑块1，金属膜2和半导体激光单元3.金属膜2在半导体激光单元3的一部分中具有孔16 通孔设置在与空气轴承滑块1的空气轴承表面相对的表面和半导体激光单元3之间，并且在孔16中设置用于调节折射率的材料17.金属膜2的底表面包括用于调节折射率的材料17被设置为与空气轴承滑动件的空气轴承表面侧相对的表面紧密接触，并且半导体激光单元3被设置成与该空气轴承滑块的顶表面紧密接触金属膜2包括用于调节折射率的材料17。版权所有（C）2011，JPO＆INPIT

29. 发明专利

JP2007183212A Heat resistor type fluid flow rate measuring device 有权
标题翻译：热电阻式流体流量测量装置
公开(公告)号：JP2007183212A
公开(公告)日：2007-07-19
申请号：JP2006002567
申请日：2006-01-10
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOBAYASHI CHIHIRO , KATO YUKIO , IDE KIYOTOMO , MORINO TAKESHI , OKAMOTO HIROKI
IPC分类号： G01F1/684 , G01F1/68 , G01F15/12
摘要： PROBLEM TO BE SOLVED: To provide a fluid flow rate measuring device capable of suppressing a change in the output characteristics of a heat resistor caused by adhesion etc. of a liquid such as water to the inside of a sub-air passage where the heat resistor is installed, in a low flow speed range. SOLUTION: The sub-air passage 110 includes a first sub-air passage 110 starting from a sub-air passage inlet 111 in a quadrangular shape and having a bent passage portion 113, an outlet portion 112, and a second sub-air passage 114 being between the passage inlet 111 and the bent portion 113. The first passage 110 includes an inner circulative surface portion 125, an outer circulative surface portion 123, and both side surface portions 117, 118. One wall surface of the second passage 114 is formed of a part of an inclined surface 116, and another wall surface 122 faces the one wall surface and is approximately parallel. If water enters the first passage 110 and a flow speed changes rapidly from a high flow speed state to a low flow speed state, waterdrops are not moved by an air flow, are collected by gravity in the ground direction along the inclined surface 116, and are discharged outside from the second passage 114. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种流体流量测量装置，其能够抑制由诸如水的液体的粘附等引起的热电阻器的输出特性的变化到副空气通道的内部，热电阻器安装在低流速范围内。副空气通道110包括从副空气通道入口111以四边形开始并具有弯曲通道部分113，出口部分112和第二子空气通道110的第一副空气通道110。空气通道114位于通道入口111和弯曲部分113之间。第一通道110包括内部循环表面部分125，外部循环表面部分123和两个侧表面部分117,118。第二通道的一个壁表面 114由倾斜表面116的一部分形成，另一个壁表面122面向一个壁表面并且大致平行。如果水进入第一通道110并且流速从高流速状态快速变化到低流速状态，则水滴不会被空气流移动，沿着倾斜表面116沿着地面方向重力收集，从第二通道114向外排出。版权所有（C）2007，JPO＆INPIT

30. 发明专利

JP2003203320A MAGNETIC HEAD SLIDER 审中-公开
公开(公告)号：JP2003203320A
公开(公告)日：2003-07-18
申请号：JP2002002598
申请日：2002-01-09
申请人： HITACHI LTD
发明人： TOKUYAMA MIKIO , JO CHOKOKU , TSUCHIYAMA RYUJI , KATO YUKIO , NAKAMURA SHIGEO , TAKAHASHI HARUHIDE
IPC分类号： G11B5/60 , G11B21/21
摘要： PROBLEM TO BE SOLVED: To provide a stable and low-floating slider wherein slider vibration is reduced at the time of contact even when the slider and a disk are brought into contact with each other. SOLUTION: A part of a slider main body 20 is extended to the portion of a thin-film magnetic head 40 to form an extended part 30, and a projected part 31 is disposed in the extended part 30 to project to a disk surface side. The height of the projected part 31 from the disk opposite surface (step surface 29) of a slider main body 20 is set equal to/higher than a magnetic head element 41, and the area of the surface of the projected part 31 opposite the disk 4 is set smaller than a predetermined value which is smaller than the area of the thin-film magnetic head 40. COPYRIGHT: (C)2003,JPO

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