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    High gradient-field recording head for perpendicular magnetic recording and fabrication method therefore
    75.
    发明申请
    High gradient-field recording head for perpendicular magnetic recording and fabrication method therefore 失效
    因此，用于垂直磁记录和制造方法的高梯度场记录头

    公开(公告)号：US20050157424A1

    公开(公告)日：2005-07-21

    申请号：US11079134

    申请日：2005-03-15

    申请人： Atsuko Kuroda ,  Masafumi Mochizuki

    发明人： Atsuko Kuroda ,  Masafumi Mochizuki

    IPC分类号： G11B5/667 ,  G11B5/00 ,  G11B5/012 ,  G11B5/127 ,  G11B5/187 ,  G11B5/31 ,  G11B5/48

    CPC分类号： G11B5/1278 ,  G11B5/012 ,  G11B5/187 ,  G11B5/4886 ,  G11B2005/0029 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

    摘要： A thin film magnetic head for perpendicular recording of a single-pole type has a flux enhanced part and a flux enhanced end arranged on a leading side of the main pole parallel with the cross track direction. The side surface of the main pole intersecting the cross track direction is arranged on the track center side perpendicular to the track width. The field gradient of a perpendicular magnetic field on the trailing side of the main pole and near both ends of the track is made steep to realize a higher areal recording density. The head is fabricated by forming a first resist pattern on an inorganic insulating layer. A slope is formed on the inorganic insulating layer with the resist pattern as a mask. A second resist pattern is then formed on the inorganic insulating layer to form a magnetic layer on the inorganic insulating layer.

    摘要翻译： 用于单极型垂直记录的薄膜磁头具有磁通增强部分和磁通增强端，该磁通增强部分设置在平行于横向磁道方向的主磁极的前侧。 与轨道方向交叉的主极的侧面配置在与轨道宽度垂直的轨道中心侧。 在主极的后侧和轨道的两端附近的垂直磁场的场梯度变得陡峭，以实现更高的面积记录密度。 通过在无机绝缘层上形成第一抗蚀剂图案来制造头部。 在抗蚀剂图案作为掩模的无机绝缘层上形成斜面。 然后在无机绝缘层上形成第二抗蚀剂图案，以在无机绝缘层上形成磁性层。

    High gradient-field recording head for perpendicular magnetic recording
    76.
    发明授权
    High gradient-field recording head for perpendicular magnetic recording 失效
    用于垂直磁记录的高梯度场记录头

    公开(公告)号：US06775099B2

    公开(公告)日：2004-08-10

    申请号：US10076432

    申请日：2002-02-19

    申请人： Atsuko Kuroda ,  Masafumi Mochizuki

    发明人： Atsuko Kuroda ,  Masafumi Mochizuki

    IPC分类号： G11B531

    CPC分类号： G11B5/1278 ,  G11B5/012 ,  G11B5/187 ,  G11B5/4886 ,  G11B2005/0029 ,  Y10T29/49043 ,  Y10T29/49044 ,  Y10T29/49046 ,  Y10T29/49048 ,  Y10T29/49052

    摘要： A thin film magnetic head for perpendicular recording of a single-pole type has a flux enhanced part and a flux enhanced end of a main pole arranged on a leading side of the main pole in parallel with the cross track direction. The side surface of the main pole intersecting the cross track direction of the main pole is arranged on the track center side perpendicular to the track width. The field gradient of a perpendicular magnetic field on the trailing side of the main pole and near both ends of the track is made steep to realize a higher areal recording density as a result.

    摘要翻译： 用于单极型垂直记录的薄膜磁头具有磁通增强部分和主极平行于横向方向布置在主极的前侧上的磁通增强端。 与主极的交叉轨道方向相交的主极的侧面配置在与轨道宽度垂直的轨道中心侧。 在主极的后侧和轨道的两端附近的垂直磁场的场梯度变得陡峭，从而实现更高的面积记录密度。

    Track pitch variation measurement method using spiral DC pattern writing
    79.
    发明授权
    Track pitch variation measurement method using spiral DC pattern writing 有权
    使用螺旋直流图案写入的轨距变化测量方法

    公开(公告)号：US08861116B2

    公开(公告)日：2014-10-14

    申请号：US13196022

    申请日：2011-08-02

    申请人： Mao Nishiyama ,  Masafumi Mochizuki ,  Kyo Akagi ,  Shuji Nishida ,  Kazunari Usui

    发明人： Mao Nishiyama ,  Masafumi Mochizuki ,  Kyo Akagi ,  Shuji Nishida ,  Kazunari Usui

    IPC分类号： G11B5/09 ,  G11B15/46 ,  G11B21/02 ,  G11B5/82 ,  G11B5/596 ,  G11B5/74

    CPC分类号： G11B5/743 ,  G11B5/59627 ,  G11B5/59661

    摘要： In one embodiment, a method includes spiral writing a DC pattern onto a magnetic disk medium using a writer of a magnetic head while moving the magnetic head in a direction about parallel to a radial direction of the magnetic disk medium while rotating the magnetic disk medium, reading the magnetic disk medium while moving the magnetic head in the direction about parallel to the radial direction of the magnetic disk medium while rotating the magnetic disk medium, and calculating a track pitch interval between data tracks of the magnetic disk medium based on the reading of the magnetic disk medium. In another embodiment, a magnetic disk medium includes a DC spiral pattern in a radial region further outward and/or a radial region further inward than a radial region where data is recorded.

    摘要翻译： 在一个实施例中，一种方法包括使用磁头的写入器将DC图案螺旋写入到磁盘介质上，同时在旋转磁盘介质的同时在大致平行于磁盘介质的径向的方向上移动磁头， 在旋转磁盘介质的同时沿着与磁盘介质的径向大致平行的方向移动磁头的同时读取磁盘介质，并且基于读取磁盘介质计算磁盘介质的数据磁道之间的磁道间距间隔 磁盘介质。 在另一个实施例中，磁盘介质包括在径向区域中进一步向内和/或径向区域的直流螺旋图案，该径向区域比记录数据的径向区域更内侧。