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    Perpendicular Magnetic Recording Head and Perpendicular Magnetic Recording/Reproducing Head
    1.
    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。

    THIN-FILM MAGNETIC HEAD CAPABLE OF SECURING INSULATING PROPERTY AND MINIMIZING PROJECTION OF A RECORDING ELEMENT SECTION DUE TO HEAT EXPANSION
    9.
    发明申请
    THIN-FILM MAGNETIC HEAD CAPABLE OF SECURING INSULATING PROPERTY AND MINIMIZING PROJECTION OF A RECORDING ELEMENT SECTION DUE TO HEAT EXPANSION 有权
    薄膜电磁头能够保护绝热材料和最小化延伸部件的记录元件部分

    公开(公告)号：US20070230041A1

    公开(公告)日：2007-10-04

    申请号：US11692046

    申请日：2007-03-27

    申请人： Sumihito Morita ,  Kiyoshi Kobayashi ,  Toru Takahashi

    发明人： Sumihito Morita ,  Kiyoshi Kobayashi ,  Toru Takahashi

    IPC分类号： G11B5/17 ,  G11B5/147

    CPC分类号： G11B5/17 ,  G11B5/3123 ,  G11B5/3136

    摘要： A thin-film magnetic head is capable of securing an insulating property and minimizing the projection of a recording element section due to heat expansion. The thin-film magnetic head includes a pair of magnetic layers disposed with a predetermined gap therebetween on a surface facing a recording medium. The layers are connected to each other along an inner part in a height direction from the medium-facing surface. A spiral recording coil is disposed between the pair of magnetic layers and wound around a connecting portion of the pair of magnetic layers. The recording coil includes a dense coil portion formed with a pitch smaller than that of the inner part in the height direction so as to be closer to the medium-facing surface than the connecting portion. An organic insulating layer is locally formed to fill coil gaps of the dense coil portion, and coil gaps other than those of the dense coil portion are filled with an inorganic insulating layer.

    摘要翻译： 薄膜磁头能够确保绝缘性能，并且由于热膨胀使记录元件部分的投影最小化。 薄膜磁头包括在与记录介质相对的表面上以预定间隙设置的一对磁性层。 这些层沿着与介质相对表面在高度方向上的内部部分彼此连接。 螺旋记录线圈设置在一对磁性层之间，并缠绕在一对磁性层的连接部分上。 记录线圈包括致密线圈部分，其形成为具有比内部部分在高度方向上的间距更小的间距，以便比连接部分更靠近中间面。 局部地形成有机绝缘层以填充致密线圈部分的线圈间隙，而不是致密线圈部分的线圈间隙填充有无机绝缘层。

    Thin-film magnetic head with a spiral recording coil having a first part with a denser pitch closer to the medium facing surface than a second coil part and all set between a pair of magnetic layers
    10.
    发明授权
    Thin-film magnetic head with a spiral recording coil having a first part with a denser pitch closer to the medium facing surface than a second coil part and all set between a pair of magnetic layers 有权
    具有螺旋记录线圈的薄膜磁头，其具有第一部分，该第一部分具有比第二线圈部分更靠近介质面对表面的更密的螺距，并且全部设置在一对磁性层之间

    公开(公告)号：US07764465B2

    公开(公告)日：2010-07-27

    申请号：US11692046

    申请日：2007-03-27

    申请人： Sumihito Morita ,  Kiyoshi Kobayashi ,  Toru Takahashi

    发明人： Sumihito Morita ,  Kiyoshi Kobayashi ,  Toru Takahashi

    IPC分类号： G11B5/17

    CPC分类号： G11B5/17 ,  G11B5/3123 ,  G11B5/3136

    摘要： A thin-film magnetic head is capable of securing an insulating property and minimizing the projection of a recording element section due to heat expansion. The thin-film magnetic head includes a pair of magnetic layers disposed with a predetermined gap therebetween on a surface facing a recording medium. The layers are connected to each other along an inner part in a height direction from the medium-facing surface. A spiral recording coil is disposed between the pair of magnetic layers and wound around a connecting portion of the pair of magnetic layers. The recording coil includes a dense coil portion formed with a pitch smaller than that of the inner part in the height direction so as to be closer to the medium-facing surface than the connecting portion. An organic insulating layer is locally formed to fill coil gaps of the dense coil portion, and coil gaps other than those of the dense coil portion are filled with an inorganic insulating layer.

    摘要翻译： 薄膜磁头能够确保绝缘性能，并且由于热膨胀使记录元件部分的投影最小化。 薄膜磁头包括在与记录介质相对的表面上以预定间隙设置的一对磁性层。 这些层沿着与介质相对表面在高度方向上的内部部分彼此连接。 螺旋记录线圈设置在一对磁性层之间，并缠绕在一对磁性层的连接部分上。 记录线圈包括致密线圈部分，其形成为具有比内部部分在高度方向上的间距更小的间距，以便比连接部分更靠近中间面。 局部地形成有机绝缘层以填充致密线圈部分的线圈间隙，而不是致密线圈部分的线圈间隙填充有无机绝缘层。