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    Thin film magnetic head having an upper pole portion with a width that increases towards an abs
    1.
    发明授权
    Thin film magnetic head having an upper pole portion with a width that increases towards an abs 失效
    薄膜磁头具有具有朝向绝缘体增加的宽度的上极部分

    公开(公告)号：US07239480B2

    公开(公告)日：2007-07-03

    申请号：US11068967

    申请日：2005-03-02

    申请人： Hiraku Hirabayashi ,  Kiyoshi Noguchi ,  Taro Oike ,  Shin Narushima ,  Takamitsu Sakamoto

    发明人： Hiraku Hirabayashi ,  Kiyoshi Noguchi ,  Taro Oike ,  Shin Narushima ,  Takamitsu Sakamoto

    IPC分类号： G11B5/187

    CPC分类号： G11B5/3116 ,  G11B5/1278

    摘要： A thin film magnetic head is provided to reduce excess magnetostatic leakage field in order to generate a sufficient recording magnetic field. The pole end portion has a width to define a recording track width. The pole rear portion has one end which is magnetically connected with the pole end portion at or in the vicinity of an edge portion of an insulating film and defines a first flare point, the other end which is connected with the upper yoke portion and defines a second flare point, and both side edges in the track width direction which are inclined so that the width in the track width direction gradually increases from the second flare point toward the first flare point. The width of the pole end portion at the first flare point is smaller than the maximum width of the pole rear portion.

    摘要翻译： 提供薄膜磁头以减少多余的静磁泄漏场，以产生足够的记录磁场。 极端部具有限定记录轨道宽度的宽度。 极后部具有在绝缘膜的边缘部分处或附近与极端部磁性连接的端部，并且限定第一扩口点，另一端与上轭部连接并限定一个 第二耀斑点和轨道宽度方向上的两个侧边缘，其倾斜，使得轨道宽度方向上的宽度从第二扩张点朝向第一扩张点逐渐增加。 第一扩张点处的极端部的宽度小于极后部的最大宽度。

    Thin-film magnetic head having magnetic layers of different thicknesses and fabrication method for same
    2.
    发明授权
    Thin-film magnetic head having magnetic layers of different thicknesses and fabrication method for same 失效
    具有不同厚度的磁性层的薄膜磁头及其制造方法

    公开(公告)号：US07321480B2

    公开(公告)日：2008-01-22

    申请号：US10917476

    申请日：2004-08-13

    申请人： Taro Oike ,  Kiyoshi Noguchi ,  Shin Narushima ,  Takamitsu Sakamoto ,  Hiraku Hirabayashi

    发明人： Taro Oike ,  Kiyoshi Noguchi ,  Shin Narushima ,  Takamitsu Sakamoto ,  Hiraku Hirabayashi

    IPC分类号： G11B5/39

    CPC分类号： G11B5/3163 ,  G11B5/3116 ,  Y10T29/49021

    摘要： A thin-film magnetic head includes a lower magnetic layer, an upper magnetic layer, a recording gap layer, and a thin-film coil. The lower magnetic layer has a first magnetic pole tip layer, and a first yoke layer which is connected to the first magnetic pole tip layer. The first yoke layer has an extended part which is relatively thick and a reduced part which is relatively thin in the area in which the first yoke layer confronts the first magnetic pole tip layer, the extended part being positioned on the side of the air bearing surface. Further, the first magnetic pole tip layer is connected to the first yoke layer at the extended part, and is insulated from the first yoke layer at the reduced part.

    摘要翻译： 薄膜磁头包括下磁性层，上磁性层，记录间隙层和薄膜线圈。 下磁性层具有第一磁极尖端层和与第一磁极尖端层连接的第一磁轭层。 第一磁轭层具有相对较厚的延伸部分和在第一磁轭层面对第一磁极末端层的区域中较薄的部分，延伸部分位于空气轴承表面侧 。 此外，第一磁极尖端层在延伸部分处连接到第一磁轭层，并且在缩小部分处与第一磁轭层绝缘。

    Thin film magnetic head
    5.
    发明申请
    Thin film magnetic head 失效
    薄膜磁头

    公开(公告)号：US20050195526A1

    公开(公告)日：2005-09-08

    申请号：US11068967

    申请日：2005-03-02

    申请人： Hiraku Hirabayashi ,  Kiyoshi Noguchi ,  Taro Oike ,  Shin Narushima ,  Takamitsu Sakamoto

    发明人： Hiraku Hirabayashi ,  Kiyoshi Noguchi ,  Taro Oike ,  Shin Narushima ,  Takamitsu Sakamoto

    IPC分类号： G11B5/31 ,  G11B5/147

    CPC分类号： G11B5/3116 ,  G11B5/1278

    摘要： The present invention is intended for a thin film magnetic head which can provide reduction in the excess magnetostatic leakage field even if the flare point is set near to the ABS in order to generate a sufficient recording magnetic field and which can assure stable overwrite characteristics even if there are variations in upper pole portion patterns. The pole end portion 223 has a width W11 to define a recording track width. The pole rear portion 222 has one end which is magnetically connected with the pole end portion 223 at or in the vicinity of an edge portion of an insulating film 273 and defines a first flare point FP1, the other end which is connected with the upper yoke portion 221 and defines a second flare point FP2, and both side edges in the track width direction which are inclined so that the width in the track width direction gradually increases from the second flare point FP2 toward the first flare point FP1. The width W11 of the pole end portion 223 at the first flare point FP1 is smaller than the maximum width W21 of the pole rear portion 222.

    摘要翻译： 本发明的目的在于一种薄膜磁头，即使将扩张点设置在靠近ABS的情况下也能够提供过剩的静磁泄漏场，以产生足够的记录磁场，即使在 上极部分图形有变化。 极端部223具有宽度W 11，以限定记录轨道宽度。 极后部222的一端在绝缘膜273的边缘部分处或附近与极端部223磁性连接，并且限定第一扩口点FP1，另一端与上端 轭部221，并且限定第二扩张点FP 2，以及轨道宽度方向上的两个侧边缘，其倾斜，使得轨道宽度方向上的宽度从第二扩张点FP 2朝向第一扩张点FP 1逐渐增加。 第一点火点FP 1的极端部223的宽度W 11比极后部222的最大宽度W 21小。

    Thin-film magnetic head having magnetic layers of different thicknesses and fabrication method for same
    6.
    发明申请
    Thin-film magnetic head having magnetic layers of different thicknesses and fabrication method for same 失效
    具有不同厚度的磁性层的薄膜磁头及其制造方法

    公开(公告)号：US20050057851A1

    公开(公告)日：2005-03-17

    申请号：US10917476

    申请日：2004-08-13

    申请人： Taro Oike ,  Kiyoshi Noguchi ,  Shin Narushima ,  Takamitsu Sakamoto ,  Hiraku Hirabayashi

    发明人： Taro Oike ,  Kiyoshi Noguchi ,  Shin Narushima ,  Takamitsu Sakamoto ,  Hiraku Hirabayashi

    IPC分类号： G11B5/127 ,  G11B5/31

    CPC分类号： G11B5/3163 ,  G11B5/3116 ,  Y10T29/49021

    摘要： A thin-film magnetic head includes a lower magnetic layer, an upper magnetic layer, a recording gap layer, and a thin-film coil. The lower magnetic layer has a first magnetic pole tip layer, and a first yoke layer which is connected to the first magnetic pole tip layer. The first yoke layer has an extended part which is relatively thick and a reduced part which is relatively thin in the area in which the first yoke layer confronts the first magnetic pole tip layer, the extended part being positioned on the side of the air bearing surface. Further, the first magnetic pole tip layer is connected to the first yoke layer at the extended part, and is insulated from the first yoke layer at the reduced part.

    摘要翻译： 薄膜磁头包括下磁性层，上磁性层，记录间隙层和薄膜线圈。 下磁性层具有第一磁极尖端层和与第一磁极尖端层连接的第一磁轭层。 第一磁轭层具有相对较厚的延伸部分和在第一磁轭层面对第一磁极末端层的区域中较薄的部分，延伸部分位于空气轴承表面侧 。 此外，第一磁极尖端层在延伸部分处连接到第一磁轭层，并且在缩小部分处与第一磁轭层绝缘。

    Thin film magnetic head having thermal expansion layer for suppressing thermal protrusion
    10.
    发明授权
    Thin film magnetic head having thermal expansion layer for suppressing thermal protrusion 有权
    具有用于抑制热突起的热膨胀层的薄膜磁头

    公开(公告)号：US07848056B2

    公开(公告)日：2010-12-07

    申请号：US11730155

    申请日：2007-03-29

    申请人： Takamitsu Sakamoto ,  Naoto Matono ,  Noriaki Kasahara ,  Shin Narushima ,  Hiromichi Umehara

    发明人： Takamitsu Sakamoto ,  Naoto Matono ,  Noriaki Kasahara ,  Shin Narushima ,  Hiromichi Umehara

    IPC分类号： G11B5/127

    CPC分类号： G11B5/3133 ,  G11B5/3136 ,  G11B5/3909 ,  G11B2005/3996

    摘要： A thin film magnetic head includes a main magnetic pole layer conducting a magnetic flux to the recording medium so that the recording medium an be magnetized in a direction orthogonal to a surface thereof; a return yoke layer disposed on a trailing side of the main magnetic pole layer; an intermediate protective layer partially disposed on a magnetic shield layer; and a thermal expansion suppressing layer having an edge located on the intermediate protective layer and being in contact with the return yoke layer in an area where the intermediate protective layer is not formed. If the thin film magnetic head is affected by ambient temperature environment, the thermal expansion suppressing layer suppresses the shift of the main magnetic pole layer and the return yoke layer toward the air bearing surface. This suppresses thermal protrusion from occurring on the thin film magnetic head due to ambient temperature environment.

    摘要翻译： 薄膜磁头包括将磁通量传导到记录介质的主磁极层，使得记录介质在与其表面正交的方向上被磁化; 设置在所述主磁极层的后侧的返回磁轭层; 部分设置在磁屏蔽层上的中间保护层; 以及热膨胀抑制层，其具有位于中间保护层上的边缘，并且在没有形成中间保护层的区域中与返回轭层接触。 如果薄膜磁头受到环境温度环境的影响，则热膨胀抑制层抑制主磁极层和返回磁轭层向空气轴承表面的移动。 这抑制了由于环境温度环境而在薄膜磁头上发生的热突起。