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    • 1. 发明授权
    • Magnetic head and method of manufacturing magnetic head
    • 磁头及制造磁头的方法
    • US6038101A
    • 2000-03-14
    • US041624
    • 1998-03-13
    • Hiroaki YodaYuichi OhsawaTakeo SakakuboMasashi SahashiJun ItoKazushi Tanimoto
    • Hiroaki YodaYuichi OhsawaTakeo SakakuboMasashi SahashiJun ItoKazushi Tanimoto
    • G11B5/60G11B5/255G11B5/31G11B5/39G11B5/40G11B21/21
    • B82Y25/00B82Y10/00G11B5/3106G11B5/3903G11B5/3967G11B2005/3996G11B5/255G11B5/3133G11B5/40
    • A magnetic head has a recording/reproducing element which is embedded in an insulation layer made of an AlO.sub.x thin film and a leading end of which is positioned at a medium opposed face. A high-hardness coating layer or a high-thermal conductivity coating layer made of diamond-like carbon or the like is disposed on a peripheral region of the medium opposed face, excluding the leading end of the recording/reproducing element and a region in the neighborhood thereof. Even in the case where the magnetic head is applied to a magnetic disk apparatus of contact recording/reproducing system, it is possible to greatly restrain wear of the leading end of the recording/reproducing element and the region in the neighborhood thereof. Further, the heat dissipation characteristic of the leading end of the recording/reproducing element can be improved greatly. The dishing of the leading end of the recording/reproducing element can be reduced to a great extent by so etching the peripheral region of the medium opposed face that the leading end of the recording/reproducing element is projected; forming the high-hardness coating layer on an etched region; and processing the projected region by wear in a final process.
    • 磁头具有嵌入在由AlOx薄膜制成的绝缘层中并且其前端位于介质相对面的记录/再现元件。 除了记录/再现元件的前端之外,在介质相对面的外围区域上还设置有由类金刚石碳等制成的高硬度涂层或高导热性涂层, 邻里。 即使在将磁头施加到接触记录/再现系统的磁盘装置的情况下,也可以大大地抑制记录/再现元件的前端和其附近的区域的磨损。 此外,可以大大提高记录/再现元件的前端的散热特性。 通过蚀刻记录/再现元件的前端的介质相对面的周边区域可以很大程度地减小记录/再现元件的前端的凹陷; 在蚀刻区域上形成高硬度涂层; 并在最终过程中通过磨损来处理投影区域。
    • 4. 发明授权
    • Hard disk drive
    • 硬盘驱动器
    • US5909341A
    • 1999-06-01
    • US149072
    • 1998-09-08
    • Takashi HikosakaTsutomu TanakaKazushi Tanimoto
    • Takashi HikosakaTsutomu TanakaKazushi Tanimoto
    • G11B5/012G11B5/40G11B5/48G11B5/58G11B5/64G11B5/73G11B5/82G11B5/84G11B5/596G11B5/712
    • G11B5/7325G11B5/012G11B5/4886G11B5/58G11B5/64G11B5/82G11B5/8404G11B5/40
    • A hard disk drive includes a magnetic disk used as a magnetic recording medium, and a magnetic head for applying magnetic fields to the disk to record data and for detecting magnetic fields from the disk to reproduce data. During recording and reproducing, the head is moved relative to the disk so as to define a track, which is a series of a number of recording bits, on the disk. At this time, the head is brought into contact with the disk, with a head contact width in the track width direction. The disk has a surface texture which presents a single peak amplitude value falling in a range of being equal to or more than 0.5 nm, and equal to or less than the recording bit length, when the surface texture is factorized into frequency compositions by means of Fourier transform. A wave length for providing the peak amplitude value falls in a range of being ten times the recording bit length or more, and equal to or less than the head contact width.
    • 硬盘驱动器包括用作磁记录介质的磁盘和用于向磁盘施加磁场以记录数据并用于检测来自磁盘的磁场以再现数据的磁头。 在记录和再现期间,磁头相对于磁盘移动,以便在磁盘上定义一系列多个记录位的轨道。 此时,磁头与磁盘接触,磁头宽度方向的磁头接触宽度。 该盘具有表面纹理,其表现出在等于或大于0.5nm的范围内的单峰振幅值,并且等于或小于记录位长度,当表面纹理被分解为频率合成时,借助于 傅里叶变换。 用于提供峰值振幅值的波长落在记录位长度的十倍以上的范围内,并且等于或小于头接触宽度。