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261 条记录 (耗时 0.039 秒)

    Method for manufacturing thin film magnetic head
    17.
    发明授权
    Method for manufacturing thin film magnetic head 失效
    制造薄膜磁头的方法

    公开(公告)号：US06305072B1

    公开(公告)日：2001-10-23

    申请号：US08979965

    申请日：1997-11-26

    申请人： Hiroaki Yoda ,  Susumu Hashimoto ,  Michiko Hara ,  Masashi Sahashi

    发明人： Hiroaki Yoda ,  Susumu Hashimoto ,  Michiko Hara ,  Masashi Sahashi

    IPC分类号： G11B542

    CPC分类号： B82Y10/00 ,  G11B5/3116 ,  G11B5/313 ,  G11B5/3163 ,  G11B5/3967 ,  Y10T29/49044 ,  Y10T29/49046

    摘要： When manufacturing a thin film magnetic head in which an upper magnetic pole is formed on a lower magnetic pole through a magnetic gap, firstly, at least on the lower magnetic pole, a convex portion possessing the width equivalent to a track width is formed. The convex portion forms a lower magnetic pole tip. Conforming to a contour of the convex shape of the lower magnetic pole, a non-magnetic material layer is formed. A flattening layer is formed on the non-magnetic material layer. The non-magnetic layer is etched with the flattening layer, for example, as a mask. In the non-magnetic material layer, a concave portion self-aligned to the lower portion magnetic pole top (convex portion) is formed. Inside the concave portion, a magnetic layer (upper magnetic pole tip) destined to be a part of the upper magnetic pole is formed. As to the lower magnetic pole tip and the upper magnetic pole tip, the widths of surfaces opposite to the magnetic gap are almost equal, and the central positions thereof almost overlap each other. Thus, a narrow track head structure with high accuracy can be obtained.

    摘要翻译： 当通过磁隙制造在下磁极上形成上磁极的薄膜磁头时，首先至少在下磁极上形成具有与磁道宽度相等的宽度的凸部。 凸部形成下磁极末端。 符合下磁极的凸形轮廓，形成非磁性材料层。 在非磁性材料层上形成平坦化层。 用平坦化层，例如作为掩模蚀刻非磁性层。 在非磁性材料层中，形成与下部磁极顶部（凸部）自对准的凹部。 在凹部内部形成着作为上磁极的一部分的磁性层（上磁极端）。 对于下磁极尖端和上磁极尖端，与磁隙相反的表面的宽度几乎相等，并且其中心位置几乎彼此重叠。 因此，可以获得高精度的窄轨道头结构。

    Thin film magnetic head having an improved heat dispersion and magnetic recording apparatus using the same
    18.
    发明授权
    Thin film magnetic head having an improved heat dispersion and magnetic recording apparatus using the same 失效
    具有改进的热分散性的薄膜磁头和使用其的磁记录装置

    公开(公告)号：US06256171B1

    公开(公告)日：2001-07-03

    申请号：US08937183

    申请日：1997-09-29

    申请人： Hiroaki Yoda ,  Akio Hori ,  Yuichi Ohsawa ,  Masashi Sahashi ,  Masatoshi Yoshikawa ,  Miki Mori

    发明人： Hiroaki Yoda ,  Akio Hori ,  Yuichi Ohsawa ,  Masashi Sahashi ,  Masatoshi Yoshikawa ,  Miki Mori

    IPC分类号： G11B539

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/10 ,  G11B5/105 ,  G11B5/3106 ,  G11B5/3967 ,  G11B5/40 ,  G11B2005/3996 ,  Y10S977/934

    摘要： A thin film magnetic head has a reproducing element or/and recording element which is held from the direction of its thickness between a first ceramic substrate and a second ceramic substrate. The reproducing element or/and recording element is positioned at substantially the center with respect to the direction of track width. The first and second ceramic substrates hold the reproducing element or/and recording element from, for example, the direction of track width. The reproducing element or/and recording element is provided with a yoke type reproducing part which has at least one pair of magnetic cores with a magnetic gap therebetween on the side of a medium opposed face and a magnetoresistance effect element to which a signal magnetic flux from a magnetic recording medium is led through the pair of magnetic cores. Heat due to a sense current and heat due to the contact between the reproducing element or/and recording element and the magnetic recording medium are efficiently dissipated to the first and second ceramic substrates, thereby retarding a temperature increase of the reproducing element or/and recording element. Abrasion in the neighborhood of the reproducing element or/and recording element is retarded by the first and second ceramic substrates. A magnetic recording apparatus is provided with a magnetic recording medium, and a magnetic head slider having the thin film magnetic head described above.

    摘要翻译： 薄膜磁头具有从第一陶瓷基板和第二陶瓷基板之间的厚度方向保持的再现元件或/和记录元件。 再现元件或/和记录元件相对于轨道宽度的方向基本上位于中心。 第一和第二陶瓷衬底从例如轨道宽度的方向保持再现元件或/和记录元件。 再现元件或/和记录元件设置有磁轭式再现部件，该磁轭式再现部件在介质相对面侧具有至少一对磁芯，其间具有磁隙，并且磁阻效应元件具有来自 磁记录介质被引导通过一对磁芯。 由于由于再现元件或/和记录元件与磁记录介质之间的接触而产生的感测电流和热的热量被有效地耗散到第一和第二陶瓷基板，从而延迟再现元件的温度升高或/和记录 元件。 在再现元件或/和记录元件附近的磨损被第一和第二陶瓷衬底延迟。 具有磁记录介质的磁记录装置和具有上述薄膜磁头的磁头滑块。

    Magnetic head with magneto-resistance effect element disposed on opposite side of magnetic core pair from recording coil
    19.
    发明授权
    Magnetic head with magneto-resistance effect element disposed on opposite side of magnetic core pair from recording coil 失效
    具有磁阻效应元件的磁头设置在与记录线圈的磁芯对的相对侧上

    公开(公告)号：US06285531B1

    公开(公告)日：2001-09-04

    申请号：US09040353

    申请日：1998-03-16

    申请人： Yuichi Ohsawa ,  Hiroaki Yoda ,  Akio Hori ,  Masatoshi Yoshikawa ,  Masashi Sahashi

    发明人： Yuichi Ohsawa ,  Hiroaki Yoda ,  Akio Hori ,  Masatoshi Yoshikawa ,  Masashi Sahashi

    IPC分类号： G11B539

    CPC分类号： G11B5/3967 ,  G11B5/2652 ,  G11B5/313 ,  G11B5/332 ,  G11B5/4886

    摘要： A magnetic head has a recording magnetic yoke on the side of an air bearing surface of which a recording magnetic gap film is interposed and a reproducing magnetic yoke on the side of an air bearing surface of which a reproducing magnetic gap film is interposed. The magnetic yoke can serve concurrently for recording/reproducing. A recording coil supplying a recording magnetic flux to a recording medium through a recording magnetic yoke is disposed along one main surface of a magnetic yoke. An MR element in which a signal magnetic flux is led from a recording medium through a reproducing magnetic yoke is disposed along the other main surface on opposite side from a recording coil of a magnetic yoke. Or, at least on extension of a film plane of a magnetic gap film, a ferromagnetic layer is disposed so as for a film plane to exist in almost perpendicular direction relative to the film plane. According to such a head structure, reproducing sensitivity decrease of the reproducing MR head due to noise or occurrence of recording fringe can be suppressed.

    摘要翻译： 磁头在记录磁隙膜的空气轴承表面一侧具有记录磁轭，并且在其中插入有再现磁隙膜的空气轴承表面侧的再现磁轭。 磁轭可以同时用于记录/再现。 通过记录磁轭向记录介质提供记录磁通的记录线圈沿磁轭的一个主表面设置。 通过再现磁轭将信号磁通从记录介质引出的MR元件沿与磁轭的记录线圈相反的另一个主表面设置。 或者，至少在磁隙膜的膜平面延伸的情况下，设置铁磁层，以使膜平面相对于膜平面以大致垂直的方向存在。 根据这种头部结构，可以抑制由于噪声或记录条纹的发生而导致的再现MR磁头的再现灵敏度降低。