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    Perpendicular Magnetic Recording Head and Perpendicular Magnetic Recording/Reproducing Head
    3.
    发明申请
    Perpendicular Magnetic Recording Head and Perpendicular Magnetic Recording/Reproducing Head 有权
    垂直磁记录头和垂直磁记录/再现头

    公开(公告)号：US20080019043A1

    公开(公告)日：2008-01-24

    申请号：US11780608

    申请日：2007-07-20

    申请人： Yusuke TOMA ,  Hiroshi Kameda ,  Kiyoshi Kobayashi ,  Toru Takahashi ,  Sumihito Morita

    发明人： Yusuke TOMA ,  Hiroshi Kameda ,  Kiyoshi Kobayashi ,  Toru Takahashi ,  Sumihito Morita

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3123 ,  G11B5/1278 ,  G11B5/3912 ,  G11B5/3967

    摘要： A perpendicular magnetic recording head according to the present invention is composed of a first magnetic layer having a main magnetic pole exposed at a facing surface opposite a recording medium, a second magnetic layer adjacent to the first magnetic layer with an intermediary non-magnetic layer disposed therebetween, and a coil layer for applying a recording magnetic field to the first magnetic layer. Since the second magnetic layer has a shape including a substantially arched portion in its cross section along a height direction, it becomes possible to keep an Edge Write magnetic field in a low level and improve external magnetic field resistance.

    摘要翻译： 根据本发明的垂直磁记录头由具有在与记录介质相对的相对表面暴露的主磁极的第一磁性层组成，与第一磁性层相邻的第二磁性层，其中设置有中间非磁性层 以及用于向第一磁性层施加记录磁场的线圈层。 由于第二磁性层具有沿其高度方向的横截面中包括大致拱形部分的形状，因此可以将边缘写入磁场保持在低电平并提高外部磁场电阻。

    PERPENDICULAR MAGNETIC RECORDING HEAD
    5.
    发明申请
    PERPENDICULAR MAGNETIC RECORDING HEAD 有权
    全能磁记录头

    公开(公告)号：US20080174911A1

    公开(公告)日：2008-07-24

    申请号：US11943938

    申请日：2007-11-21

    申请人： Yusuke Toma ,  Kiyoshi Kobayashi ,  Toru Takahashi ,  Hiroshi Kameda

    发明人： Yusuke Toma ,  Kiyoshi Kobayashi ,  Toru Takahashi ,  Hiroshi Kameda

    IPC分类号： G11B5/127 ,  G11B5/31

    CPC分类号： G11B5/1278 ,  G11B5/3116

    摘要： A perpendicular magnetic recording head is provided capable of suppressing the magnetic field attributable to the edge write phenomenon and improving resistance to an external magnetic field. The perpendicular magnetic recording head includes a magnetic layer that has a main magnetic pole on a surface facing a recording medium; a return yoke layer that is disposed on the magnetic layer with a nonmagnetic layer disposed therebetween and has a large width in the direction of the main magnetic pole; and a coil layer for applying a recording magnetic field to the magnetic layer. The return yoke layer is provided with such a shape that as seen in the plan view, the return yoke layer is exposed from the medium facing surface with a width not greater than the width in the track width direction of a protrusion region of the return yoke layer that covers the coil layer and the width of the return yoke layer gradually increases as it goes toward the starting point of the height direction.

    摘要翻译： 提供了能够抑制归因于边缘写入现象的磁场并提高对外部磁场的抵抗力的垂直磁记录头。 垂直磁记录头包括在面向记录介质的表面上具有主磁极的磁性层; 返回磁轭层，其设置在磁性层上，其间设置有非磁性层，并且在主磁极的方向上具有大的宽度; 以及用于向磁性层施加记录磁场的线圈层。 返回磁轭层具有如下的形状：从平面图看，返回磁轭层从介质面向表面露出，宽度不大于返回磁轭的突出区域的磁道宽度方向上的宽度 覆盖线圈层的层和返回轭层的宽度随着朝向高度方向的起点逐渐增加。

    Vertical magnetic recording head device with the return yoke layer having thick portions
    6.
    发明授权
    Vertical magnetic recording head device with the return yoke layer having thick portions 有权
    垂直磁记录头装置，其返回轭层具有较厚的部分

    公开(公告)号：US08018680B2

    公开(公告)日：2011-09-13

    申请号：US11947148

    申请日：2007-11-29

    申请人： Yusuke Toma ,  Hiroshi Kameda ,  Kiyoshi Kobayashi ,  Toru Takahashi

    发明人： Yusuke Toma ,  Hiroshi Kameda ,  Kiyoshi Kobayashi ,  Toru Takahashi

    IPC分类号： G11B5/147 ,  G11B5/39

    CPC分类号： G11B5/1278 ,  G11B5/3116 ,  Y10T428/11

    摘要： A vertical magnetic recording head device includes: a magnetic layer that includes a main magnetic pole exposed from a surface facing a recording medium; a return yoke layer that is provided on the magnetic layer with a non-magnetic layer interposed therebetween; and coil layers that apply a recording magnetic field to the magnetic layer and the return yoke layer. In the vertical magnetic recording head device, the return yoke layer includes thick portions that extend in a height direction in edge regions arranged in a track width direction.

    摘要翻译： 垂直磁记录头装置包括：磁性层，其包括从面向记录介质的表面暴露的主磁极; 在磁性层上设置有介于其间的非磁性层的返回磁轭层; 以及向磁性层和返回轭层施加记录磁场的线圈层。 在垂直磁记录头装置中，返回磁轭层包括沿轨道宽度方向布置的边缘区域沿高度方向延伸的厚壁部分。

    VERTICAL MAGNETIC RECORDING HEAD DEVICE
    7.
    发明申请
    VERTICAL MAGNETIC RECORDING HEAD DEVICE 有权
    垂直磁记录头设备

    公开(公告)号：US20080152951A1

    公开(公告)日：2008-06-26

    申请号：US11947148

    申请日：2007-11-29

    申请人： Yusuke Toma ,  Hiroshi Kameda ,  Kiyoshi Kobayashi ,  Toru Takahashi

    发明人： Yusuke Toma ,  Hiroshi Kameda ,  Kiyoshi Kobayashi ,  Toru Takahashi

    IPC分类号： G11B5/127

    CPC分类号： G11B5/1278 ,  G11B5/3116 ,  Y10T428/11

    摘要： A vertical magnetic recording head device includes: a magnetic layer that includes a main magnetic pole exposed from a surface facing a recording medium; a return yoke layer that is provided on the magnetic layer with a non-magnetic layer interposed therebetween; and coil layers that apply a recording magnetic field to the magnetic layer and the return yoke layer. In the vertical magnetic recording head device, the return yoke layer includes thick portions that extend in a height direction in edge regions arranged in a track width direction

    摘要翻译： 垂直磁记录头装置包括：磁性层，其包括从面向记录介质的表面暴露的主磁极; 在磁性层上设置有介于其间的非磁性层的返回磁轭层; 以及向磁性层和返回轭层施加记录磁场的线圈层。 在垂直磁记录头装置中，返回磁轭层包括沿轨道宽度方向布置的边缘区域沿高度方向延伸的厚壁部分

    Perpendicular magnetic recording head with the return yoke layer having gradually increasing the width
    8.
    发明授权
    Perpendicular magnetic recording head with the return yoke layer having gradually increasing the width 有权
    具有返回轭层的垂直磁记录头具有逐渐增加的宽度

    公开(公告)号：US08045292B2

    公开(公告)日：2011-10-25

    申请号：US11943938

    申请日：2007-11-21

    申请人： Yusuke Toma ,  Kiyoshi Kobayashi ,  Toru Takahashi ,  Hiroshi Kameda

    发明人： Yusuke Toma ,  Kiyoshi Kobayashi ,  Toru Takahashi ,  Hiroshi Kameda

    IPC分类号： G11B5/147

    CPC分类号： G11B5/1278 ,  G11B5/3116

    摘要： A perpendicular magnetic recording head is provided capable of suppressing the magnetic field attributable to the edge write phenomenon and improving resistance to an external magnetic field. The perpendicular magnetic recording head includes a magnetic layer that has a main magnetic pole on a surface facing a recording medium; a return yoke layer that is disposed on the magnetic layer with a nonmagnetic layer disposed therebetween and has a large width in the direction of the main magnetic pole; and a coil layer for applying a recording magnetic field to the magnetic layer. The return yoke layer is provided with such a shape that as seen in the plan view, the return yoke layer is exposed from the medium facing surface with a width not greater than the width in the track width direction of a protrusion region of the return yoke layer that covers the coil layer and the width of the return yoke layer gradually increases in the height direction from the medium facing surface.

    摘要翻译： 提供了能够抑制归因于边缘写入现象的磁场并提高对外部磁场的抵抗力的垂直磁记录头。 垂直磁记录头包括在面向记录介质的表面上具有主磁极的磁性层; 返回磁轭层，其设置在磁性层上，其间设置有非磁性层，并且在主磁极的方向上具有大的宽度; 以及用于向磁性层施加记录磁场的线圈层。 返回磁轭层具有如下的形状：从平面图看，返回磁轭层从介质面向表面露出，宽度不大于返回磁轭的突出区域的磁道宽度方向上的宽度 覆盖线圈层的层和返回轭层的宽度在与面向介质的表面的高度方向上逐渐增加。

    Perpendicular magnetic recording head having a main magnetic pole layer with a trapezoidally shaped flared part with a ratio of the length of the long base to that of the short base is equal to 1
    9.
    发明授权
    Perpendicular magnetic recording head having a main magnetic pole layer with a trapezoidally shaped flared part with a ratio of the length of the long base to that of the short base is equal to 1 有权
    具有主磁极层的垂直磁记录头，其具有长基部长度与短基部的长度之比的梯形扩张部分等于1

    公开(公告)号：US07859791B2

    公开(公告)日：2010-12-28

    申请号：US11697222

    申请日：2007-04-05

    申请人： Yusuke Toma ,  Hiroshi Kameda ,  Eiji Ozaki

    发明人： Yusuke Toma ,  Hiroshi Kameda ,  Eiji Ozaki

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1871

    摘要： A perpendicular magnetic recording head includes a nonmagnetic insulating layer and a main magnetic pole layer disposed on the nonmagnetic insulating layer. The main magnetic pole layer includes a pole straight part exposed in an opposing surface opposite a recording medium and a flared part that extends from the pole straight part in a height direction. The flared part broadens in a track width direction as the flared part extends in the height direction. The pole straight part of the main magnetic pole layer as viewed from the opposing surface has a trapezoidal shape over its entire length, the trapezoidal shape being narrowed at the nonmagnetic insulating layer-side. The flared part as viewed from the opposing surface has a trapezoidal shape at least at a junction with the pole straight part, the trapezoidal shape being narrowed at the nonmagnetic insulating layer-side.

    摘要翻译： 垂直磁记录头包括非磁性绝缘层和设置在非磁性绝缘层上的主磁极层。 主磁极层包括暴露在与记录介质相对的相对表面中的极直部分和在高度方向上从极直部分延伸的扩张部分。 当扩张部分在高度方向上延伸时，扩口部分在轨道宽度方向上变宽。 从相对表面观察，主磁极层的极直部分在整个长度上具有梯形形状，梯形形状在非磁性绝缘层侧变窄。 从相对表面观察的扩口部分至少在与极直部分的接合处具有梯形形状，梯形形状在非磁性绝缘层侧变窄。

    PERPENDICULAR MAGNETIC RECORDING HEAD HAVING FLARED PART
    10.
    发明申请
    PERPENDICULAR MAGNETIC RECORDING HEAD HAVING FLARED PART 有权
    具有弹性部分的全磁性记录头

    公开(公告)号：US20070236834A1

    公开(公告)日：2007-10-11

    申请号：US11697222

    申请日：2007-04-05

    申请人： Yusuke Toma ,  Hiroshi Kameda ,  Eiji Ozaki

    发明人： Yusuke Toma ,  Hiroshi Kameda ,  Eiji Ozaki

    IPC分类号： G11B5/147

    CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1871

    摘要： A perpendicular magnetic recording head includes a nonmagnetic insulating layer and a main magnetic pole layer disposed on the nonmagnetic insulating layer. The main magnetic pole layer includes a pole straight part exposed in an opposing surface opposite a recording medium and a flared part that extends from the pole straight part in a height direction. The flared part broadens in a track width direction as the flared part extends in the height direction. The pole straight part of the main magnetic pole layer as viewed from the opposing surface has a trapezoidal shape over its entire length, the trapezoidal shape being narrowed at the nonmagnetic insulating layer-side. The flared part as viewed from the opposing surface has a trapezoidal shape at least at a junction with the pole straight part, the trapezoidal shape being narrowed at the nonmagnetic insulating layer-side.

    摘要翻译： 垂直磁记录头包括非磁性绝缘层和设置在非磁性绝缘层上的主磁极层。 主磁极层包括暴露在与记录介质相对的相对表面中的极直部分和在高度方向上从极直部分延伸的扩张部分。 当扩张部分在高度方向上延伸时，扩口部分在轨道宽度方向上变宽。 从相对表面观察，主磁极层的极直部分在整个长度上具有梯形形状，梯形形状在非磁性绝缘层侧变窄。 从相对表面观察的扩口部分至少在与极直部分的接合处具有梯形形状，梯形形状在非磁性绝缘层侧变窄。