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    High sensitivity magnetic head using magneto-resistive effect element
    1.
    发明授权
    High sensitivity magnetic head using magneto-resistive effect element 失效
    高灵敏度磁头使用磁阻效应元件

    公开(公告)号：US4068272A

    公开(公告)日：1978-01-10

    申请号：US632761

    申请日：1975-11-17

    申请人： Kenji Kanai ,  Nobuyuki Kaminaka ,  Norimoto Nouchi ,  Noboru Nomura

    发明人： Kenji Kanai ,  Nobuyuki Kaminaka ,  Norimoto Nouchi ,  Noboru Nomura

    IPC分类号： G11B5/39 ,  G11B5/12 ,  G11B5/30

    CPC分类号： G11B5/3925 ,  G11B5/3903 ,  G11B5/3977 ,  G11B5/398

    摘要： This invention provides a high sensitivity magnetic head using magneto-resistive effect elements consisting of ferromagnetic thin plates and allows construction of a high precision multi-track head by using thin film and photo-etching techniques. The magnetic head comprises a base, two flux converging cores forming a magnetic gap, a detecting portion provided between the two flux converging cores and extending at right angles to the end of the base, one end of the detecting portion being located in the neighborhood of the gap and having a smaller sectional area than the other portions, and detecting electrodes provided at the opposite ends of the detecting portion. At least one of the two cores is of a ferromagnetic material and integrally formed on the base.

    摘要翻译： 本发明提供了使用由铁磁薄板构成的磁阻效应元件的高灵敏度磁头，并且通过使用薄膜和光蚀刻技术来构造高精度多轨头。 磁头包括基座，形成磁隙的两个磁通会聚磁芯，设置在两个磁通会聚磁芯之间并与基座的端部成直角延伸的检测部分，检测部分的一端位于 所述间隙具有比其他部分更小的截面面积，以及设置在所述检测部分的相对端的检测电极。 两个芯中的至少一个是铁磁材料并且一体地形成在基部上。

    Magnetic head and method of production thereof
    2.
    发明授权
    Magnetic head and method of production thereof 失效
    磁头及其制造方法

    公开(公告)号：US4354212A

    公开(公告)日：1982-10-12

    申请号：US166808

    申请日：1980-07-08

    申请人： Norimoto Nouchi ,  Kenji Kanai ,  Nobuyuki Kaminaka ,  Noboru Nomura

    发明人： Norimoto Nouchi ,  Kenji Kanai ,  Nobuyuki Kaminaka ,  Noboru Nomura

    IPC分类号： G11B5/39 ,  G11B5/12 ,  G11B5/30

    CPC分类号： G11B5/3932

    摘要： A magnetic head and a production method therefore in which permanent magnet films for applying a DC bias magnetic field Hd h to a magnetoresistive effect element film (MR element film) is arranged on both sides of the thickness dimension of the MR element film through at least a non-magnetic film therebetween. In making the MR element film thicker in order to reduce distortion, the DC bias magnetic field Hd b to be applied to the MR element film is also required to be increased. Unlike the prior art in which the above-mentioned requirement is met by increasing the thickness of the permanent magnet film under the thickness of the MR element film resulting in the problem of breakage of a film member above or under the thickness of the permanent magnet film, the invention further comprises a second permanent magnet film above the thickness of the MR element film without increasing the thickness of the first permanent magnet film. In the case of a magnetic head with a shield members of soft magnetic material holding the MR element film from both sides of the thickness thereof, the MR element film is made thicker to make reproduction possible without any distortion or without substantially increasing the gap. For this purpose, the MR element film is held on the sides above and under the thickness thereof by first and second permanent magnet films which in turn are held by the shield members. To minimize distribution of the MR element film, a comparatively high-temperature process after forming of the MR element film i.e., forming of the second permanent magnet film is effected at optimum temperature, and a magnetic field is applied along the magnetic easy axis of the MR element film.

    摘要翻译： 因此，磁头及其制造方法，其中用于将DC偏置磁场Hd h施加到磁阻效应元件膜（MR元件膜）的永磁体膜至少布置在MR元件膜的厚度尺寸的两侧 它们之间的非磁性膜。 为了使MR元件膜变厚以减少畸变，还需要增加施加到MR元件膜的DC偏置磁场Hd b。 不同于通过在MR元件膜的厚度下增加永磁体膜的厚度来满足上述要求的现有技术，导致膜构件在永磁体膜的厚度以上或以下的厚度的断裂的问题 本发明还包括在MR元件膜的厚度之上的第二永磁体膜，而不增加第一永磁体膜的厚度。 在具有从其厚度的两侧保持MR元件膜的软磁材料的屏蔽构件的磁头的情况下，将MR元件膜制成更厚以使得再现成为可能而没有任何变形或基本上不增加间隙。 为此，MR元件膜通过第一和第二永磁体膜保持在其厚度的上方和下方，该永磁体膜又由屏蔽部件保持。 为了最小化MR元件膜的分布，在形成MR元件膜之后进行比较高温处理，即形成第二永久磁铁膜，在最佳温度下进行，沿着磁性容易轴施加磁场 MR元件膜。

    Thin-film magnetic head
    5.
    发明授权
    Thin-film magnetic head 失效
    薄膜磁头

    公开(公告)号：US4353102A

    公开(公告)日：1982-10-05

    申请号：US165941

    申请日：1980-07-03

    申请人： Kenji Kanai ,  Nobuyuki Kaminaka ,  Noboru Nomura ,  Norimoto Nouchi

    发明人： Kenji Kanai ,  Nobuyuki Kaminaka ,  Noboru Nomura ,  Norimoto Nouchi

    IPC分类号： G11B5/31 ,  G11B5/22 ,  G11B5/20 ,  G11B5/25

    CPC分类号： G11B5/31

    摘要： A thin-film magnetic head constructed in the manner that a magnetic circuit is composed of a base of magnetic material and a thin-film magnetic core layer, which form an operating gap at the front end thereof and a rear junction at the rear end of the magnetic core layer, and a conductor layer forming a winding is provided between the base and the magnetic core layer. The magnetic core layer has a larger width at the portion where it crosses over the conductor layer, than at the operating gap portion, whereby magnetic fluxes generated by electric current flowing through the conductor layer are effectively passed through the magnetic core layer and so recording efficiency is improved.

    摘要翻译： 一种薄膜磁头，其构造为磁路由磁性材料的基底和薄膜磁性核心层构成，所述基底在其前端形成工作间隙，在后端形成后接合部 磁芯层和形成绕组的导体层设置在基座和磁芯层之间。 磁芯层在与导体层交叉的部分处的宽度比在工作间隙部分具有较大的宽度，由此流过导体层的电流产生的磁通有效地通过磁芯层，因此记录效率 改进了

    Thin film magnetic head
    6.
    发明授权
    Thin film magnetic head 失效
    薄膜磁头

    公开(公告)号：US4241367A

    公开(公告)日：1980-12-23

    申请号：US17536

    申请日：1979-03-05

    申请人： Noboru Nomura ,  Kenji Kanai ,  Nobuyuki Kaminaka ,  Norimoto Nouchi

    发明人： Noboru Nomura ,  Kenji Kanai ,  Nobuyuki Kaminaka ,  Norimoto Nouchi

    IPC分类号： G11B5/31 ,  H01F41/34 ,  G11B5/14 ,  G11B5/20

    CPC分类号： G11B5/31 ,  G11B5/3163 ,  H01F41/34

    摘要： This invention provides a thin film magnetic head composed of at least one conductive body layer formed in a magnetic material substrate with grooves therein, each groove being filled with a non-magnetic material, an insulating layer formed on the face of the magnetic material substrate including the conductive body layers, and a magnetic material layer formed on the insulating body layer. To precisely form the groove, an electrolytic etching process of the substrate and an annealing process of the substrate surface layer are combined to provide an straight-line property of the groove and the groove section, circular in arc, with better reproducibility.

    摘要翻译： 本发明提供一种薄膜磁头，其由至少一个形成在其中具有凹槽的磁性材料基板中的导电体层构成，每个凹槽填充有非磁性材料，形成在磁性材料基板的表面上的绝缘层包括 导电体层和形成在绝缘体层上的磁性材料层。 为了精确地形成凹槽，将基板的电解蚀刻工艺和基板表面层的退火处理结合，以提供凹槽和凹槽部分的直线性，圆弧形，具有更好的再现性。

    Thin film magnetic head and method of making it
    9.
    发明授权
    Thin film magnetic head and method of making it 失效
    薄膜磁头及其制作方法

    公开(公告)号：US4422117A

    公开(公告)日：1983-12-20

    申请号：US254662

    申请日：1981-04-16

    申请人： Noboru Nomura ,  Kenji Kanai ,  Nobuyuki Kaminaka ,  Norimoto Nouchi

    发明人： Noboru Nomura ,  Kenji Kanai ,  Nobuyuki Kaminaka ,  Norimoto Nouchi

    IPC分类号： G11B5/31 ,  G11B5/39 ,  G11B5/12 ,  G11B5/20 ,  G11B5/22

    CPC分类号： G11B5/3903 ,  G11B5/3106 ,  G11B5/3163

    摘要： A thin film magnetic head has a substrate with thin film layers deposited thereon and a protector layer bonded by a bonding layer to the substrate, with the thin film layers interposed therebetween. The thin film layers includes components of an electromagnetic transducing means. The bonding layer is a glass having a working temperature at which a magnetic layer included in the thin film layers does not have the magnetic characteristics deteriorated to any substantial degree.The fusing of the glass for making the bonding layer is performed at a temperature below 450.degree. C.

    摘要翻译： 薄膜磁头具有沉积有薄膜层的基板和通过粘结层粘合到基板上的保护层，其间插入有薄膜层。 薄膜层包括电磁换能装置的部件。 接合层是具有工作温度的玻璃，其中包括在薄膜层中的磁性层的磁特性不会在任何程度上劣化。 用于制造粘合层的玻璃的熔合在450℃以下进行。

    Magnetic head arrangement
    10.
    发明授权
    Magnetic head arrangement 失效
    磁头布置

    公开(公告)号：US4409632A

    公开(公告)日：1983-10-11

    申请号：US208480

    申请日：1980-11-19

    申请人： Kenji Kanai ,  Nobuyuki Kaminaka ,  Norimoto Nouchi ,  Noboru Nomura

    发明人： Kenji Kanai ,  Nobuyuki Kaminaka ,  Norimoto Nouchi ,  Noboru Nomura

    IPC分类号： G11B5/31 ,  G11B5/20 ,  G11B5/22

    CPC分类号： G11B5/313

    摘要： A magnetic head arrangement includes a spiral coil made of a thin layer and having a central opening. The spiral coil is deposited on a first layer of magnetic material in an electrically insulated manner. The arrangement further includes a second layer of magnetic material having a width wider than that of the central opening of the spiral coil and deposited on the spiral coil in an electrically insulated manner. A portion of the second layer located in the central opening of the spiral coil is magnetically connected with the first layer and another portion of the second layer located outside the spiral coil is held above the first layer to form a predetermined gap.

    摘要翻译： 磁头装置包括由薄层制成并具有中心开口的螺旋线圈。 螺旋线圈以电绝缘方式沉积在第一层磁性材料上。 该装置还包括第二层磁性材料，其宽度大于螺旋线圈中心开口的宽度，并以电绝缘方式沉积在螺旋线圈上。 位于螺旋线圈的中心开口中的第二层的一部分与第一层磁性连接，位于螺旋线圈外部的第二层的另一部分被保持在第一层上方以形成预定间隙。