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    Thin-film magnetic head comprising contact pad including portions of closure and substrate and magnetic recording apparatus comprising the head
    1.
    发明授权
    Thin-film magnetic head comprising contact pad including portions of closure and substrate and magnetic recording apparatus comprising the head 有权
    薄膜磁头包括包括封闭件和基板的部分的接触焊盘以及包括磁头的磁记录装置

    公开(公告)号：US07724474B2

    公开(公告)日：2010-05-25

    申请号：US11497376

    申请日：2006-08-02

    申请人： Kazuhiko Maejima ,  Mitsuyoshi Kawai ,  Hiroki Matsukuma ,  Katsumichi Tagami ,  Makoto Yoshida ,  Hiroshi Kamiyama

    发明人： Kazuhiko Maejima ,  Mitsuyoshi Kawai ,  Hiroki Matsukuma ,  Katsumichi Tagami ,  Makoto Yoshida ,  Hiroshi Kamiyama

    IPC分类号： G11B5/60

    CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3106 ,  G11B5/3967

    摘要： A thin-film magnetic head that shows stable read and/or write performances, maintaining the reliability over time by suppressing the wear of the head sufficiently, is provided. The head comprises: a substrate having an element-formed surface and an opposed-to-medium surface; a magnetic head element; an overcoat layer formed on the element-formed surface so as to cover the magnetic head element; a closure provided on the overcoat layer, a surface of the closure being in contact with the upper surface of the overcoat layer; and an element contact pad formed in a sliding-side surface of the head and having a contact surface including a part of the opposed-to-medium surface, a part of an end surface of the overcoat layer and a part of an end surface of the closure, one end of the magnetic head element reaching the contact surface.

    摘要翻译： 提供了表现出稳定的读取和/或写入性能的薄膜磁头，通过足够地抑制头部的磨损来保持随时间的可靠性。 头部包括：具有元件形成表面和相对中间表面的基底; 磁头元件; 形成在所述元件形成表面上以覆盖所述磁头元件的外涂层; 设置在外涂层上的封盖，封盖的表面与外涂层的上表面接触; 以及形成在所述头部的滑动侧表面中的元件接触垫，并且具有包括相对中间表面的一部分的接触表面，所述外涂层的端面的一部分和端面的一部分 闭合件，磁头元件的一端到达接触表面。

    Thin-film magnetic head with closure and magnetic recording apparatus
    2.
    发明申请
    Thin-film magnetic head with closure and magnetic recording apparatus 有权
    薄膜磁头封闭和磁记录装置

    公开(公告)号：US20070035877A1

    公开(公告)日：2007-02-15

    申请号：US11497376

    申请日：2006-08-02

    申请人： Kazuhiko Maejima ,  Mitsuyoshi Kawai ,  Hiroki Matsukuma ,  Katsumichi Tagami ,  Makoto Yoshida ,  Hiroshi Kamiyama

    发明人： Kazuhiko Maejima ,  Mitsuyoshi Kawai ,  Hiroki Matsukuma ,  Katsumichi Tagami ,  Makoto Yoshida ,  Hiroshi Kamiyama

    IPC分类号： G11B5/187

    CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3106 ,  G11B5/3967

    摘要： A thin-film magnetic head that shows stable read and/or write performances, maintaining the reliability over time by suppressing the wear of the head sufficiently, is provided. The head comprises: a substrate having an element-formed surface and an opposed-to-medium surface; a magnetic head element; an overcoat layer formed on the element-formed surface so as to cover the magnetic head element; a closure provided on the overcoat layer, a surface of the closure being in contact with the upper surface of the overcoat layer; and an element contact pad formed in a sliding-side surface of the head and having a contact surface including a part of the opposed-to-medium surface, a part of an end surface of the overcoat layer and a part of an end surface of the closure, one end of the magnetic head element reaching the contact surface.

    摘要翻译： 提供了表现出稳定的读取和/或写入性能的薄膜磁头，通过足够地抑制头部的磨损来保持随时间的可靠性。 头部包括：具有元件形成表面和相对中间表面的基底; 磁头元件; 形成在所述元件形成表面上以覆盖所述磁头元件的外涂层; 设置在外涂层上的封盖，封盖的表面与外涂层的上表面接触; 以及形成在所述头部的滑动侧表面中的元件接触垫，并且具有包括相对中间表面的一部分的接触表面，所述外涂层的端面的一部分和端面的一部分 闭合件，磁头元件的一端到达接触表面。

    Thin-film magnetic head for perpendicular magnetic recording and manufacturing method of thin-film magnetic head
    5.
    发明授权
    Thin-film magnetic head for perpendicular magnetic recording and manufacturing method of thin-film magnetic head 有权
    用于垂直磁记录的薄膜磁头和薄膜磁头的制造方法

    公开(公告)号：US07443633B2

    公开(公告)日：2008-10-28

    申请号：US11300277

    申请日：2005-12-15

    申请人： Katsumichi Tagami ,  Tatsuya Harada ,  Hiroki Matsukuma ,  Tetsuya Roppongi ,  Susumu Aoki ,  Kazumasa Fukuda ,  Naoto Matono

    发明人： Katsumichi Tagami ,  Tatsuya Harada ,  Hiroki Matsukuma ,  Tetsuya Roppongi ,  Susumu Aoki ,  Kazumasa Fukuda ,  Naoto Matono

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1872

    摘要： A thin-film magnetic head with which an error rate is decreased due to a reduction of a jitter without significant decrease in write field, is provided. The head comprises at least one inductive write head element comprising: a main magnetic pole layer having an inner saturation magnetic flux density varying from both side end surfaces in a track-width direction and a leading end surface, toward a center portion in the track-width direction of a trailing end surface; an auxiliary magnetic pole layer; and at least one coil layer, a curvature width WC of a contour line of a write field adjacent to a trailing edge on an ABS side of the main magnetic pole layer satisfying the following expression: −0.15*WT≦WC

    摘要翻译： 提供了一种薄膜磁头，其由于抖动的减小而不会在写入场中显着降低而误差率降低。 头包括至少一个感应写头元件，包括：主磁极层，具有从轨道宽度方向和前端表面的两个侧端面朝着轨道宽度方向的中心部分变化的内部饱和磁通密度， 后端面的宽度方向; 辅助磁极层; 以及至少一个线圈层，与主磁极层的ABS侧的后缘相邻的写入场的轮廓线的曲率宽度W C C满足以下表达式：-0.15 * 其中W T是轨道宽度，W C的单位和 W N是纳米。

    Magnetic recording and reproducing apparatus and magnetic recording medium
    6.
    发明申请
    Magnetic recording and reproducing apparatus and magnetic recording medium 失效
    磁记录和再现装置和磁记录介质

    公开(公告)号：US20050286155A1

    公开(公告)日：2005-12-29

    申请号：US11111943

    申请日：2005-04-22

    申请人： Katsumichi Tagami ,  Yoshikazu Soeno ,  Kazuya Shimakawa ,  Hiroki Matsukuma

    发明人： Katsumichi Tagami ,  Yoshikazu Soeno ,  Kazuya Shimakawa ,  Hiroki Matsukuma

    IPC分类号： G11B5/09 ,  G11B5/596 ,  G11B5/82

    CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/59655 ,  G11B5/743 ,  G11B5/82

    摘要： The burst pattern shape in a discrete medium is set to a shape (truncated quadrangular pyramid shape) having substantially trapezoidal shapes in a track width direction and in a track circumferential direction, respectively, and a predetermined relationship is satisfied among W1, W2, Tp, and Wr where W1 represents an upper side corresponding to the surface of a convex magnetic recording layer and W2 a lower side corresponding to the lower surface of the convex magnetic recording layer in the trapezoidal shape in the track width direction, Tp represents a data track pitch of a data information recording portion, and Wr represents a read width of a magnetic head. Therefore, the burst pattern shape makes it possible to largely reduce a production load in processing and still to obtain an accurate position error signal.

    摘要翻译： 将离散介质中的突发图案形状分别设定为在轨道宽度方向和轨道圆周方向上具有大致梯形形状的形状（截头四角锥形状），并且在W 1，W 2， Tp和Wr，其中W 1表示对应于凸形磁记录层的表面的上侧，W 2表示与轨道宽度方向上的梯形形状的凸形磁记录层的下表面对应的下侧，Tp表示 数据信息记录部分的数据磁道间距，Wr表示磁头的读宽度。 因此，突发图案形状使得可以大大降低处理中的生产负荷，并且仍然获得精确的位置误差信号。

    Magnetic recording and reproducing apparatus and magnetic recording medium
    9.
    发明授权
    Magnetic recording and reproducing apparatus and magnetic recording medium 失效
    磁记录和再现装置和磁记录介质

    公开(公告)号：US07158340B2

    公开(公告)日：2007-01-02

    申请号：US11111943

    申请日：2005-04-22

    申请人： Katsumichi Tagami ,  Yoshikazu Soeno ,  Kazuya Shimakawa ,  Hiroki Matsukuma

    发明人： Katsumichi Tagami ,  Yoshikazu Soeno ,  Kazuya Shimakawa ,  Hiroki Matsukuma

    IPC分类号： G11B5/596

    CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/59655 ,  G11B5/743 ,  G11B5/82

    摘要： The burst pattern shape in a discrete medium is set to a shape (truncated quadrangular pyramid shape) having substantially trapezoidal shapes in a track width direction and in a track circumferential direction, respectively, and a predetermined relationship is satisfied among W1, W2, Tp, and Wr where W1 represents an upper side corresponding to the surface of a convex magnetic recording layer and W2 a lower side corresponding to the lower surface of the convex magnetic recording layer in the trapezoidal shape in the track width direction, Tp represents a data track pitch of a data information recording portion, and Wr represents a read width of a magnetic head. Therefore, the burst pattern shape makes it possible to largely reduce a production load in processing and still to obtain an accurate position error signal.

    摘要翻译： 将离散介质中的突发图案形状分别设定为在轨道宽度方向和轨道圆周方向上具有大致梯形形状的形状（截头四角锥形状），并且在W 1，W 2， Tp和Wr，其中W 1表示对应于凸形磁记录层的表面的上侧，W 2表示与轨道宽度方向上的梯形形状的凸形磁记录层的下表面对应的下侧，Tp表示 数据信息记录部分的数据磁道间距，Wr表示磁头的读宽度。 因此，突发图案形状使得可以大大降低处理中的生产负荷，并且仍然获得精确的位置误差信号。

    Thin-film magnetic head for perpendicular magnetic recording and manufacturing method of thin-film magnetic head
    10.
    发明申请
    Thin-film magnetic head for perpendicular magnetic recording and manufacturing method of thin-film magnetic head 有权
    用于垂直磁记录的薄膜磁头和薄膜磁头的制造方法

    公开(公告)号：US20060132972A1

    公开(公告)日：2006-06-22

    申请号：US11300277

    申请日：2005-12-15

    申请人： Katsumichi Tagami ,  Tatsuya Harada ,  Hiroki Matsukuma ,  Tetsuya Roppongi ,  Susumu Aoki ,  Kazumasa Fukuda ,  Naoto Matono

    发明人： Katsumichi Tagami ,  Tatsuya Harada ,  Hiroki Matsukuma ,  Tetsuya Roppongi ,  Susumu Aoki ,  Kazumasa Fukuda ,  Naoto Matono

    IPC分类号： G11B5/147

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1872

    摘要： A thin-film magnetic head with which an error rate is decreased due to a reduction of a jitter without significant decrease in write field, is provided. The head comprises at least one inductive write head element comprising: a main magnetic pole layer having an inner saturation magnetic flux density varying from both side end surfaces in a track-width direction and a leading end surface, toward a center portion in the track-width direction of a trailing end surface; an auxiliary magnetic pole layer; and at least one coil layer, a curvature width WC of a contour line of a write field adjacent to a trailing edge on an ABS side of the main magnetic pole layer satisfying the following expression: −0.15*WT=WC

    摘要翻译： 提供了一种薄膜磁头，其由于抖动的减小而不会在写入场中显着降低而误差率降低。 头包括至少一个感应写头元件，包括：主磁极层，具有从轨道宽度方向和前端表面的两个侧端面朝着轨道宽度方向的中心部分变化的内部饱和磁通密度， 后端面的宽度方向; 辅助磁极层; 以及至少一个线圈层，与主磁极层的ABS侧的后缘相邻的写入场的轮廓线的曲率宽度W C C满足以下表达式：-0.15 * 其中W T是轨道宽度，W C和W的单位是W 是纳米。