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    Magnetic head and process for producing same
    2.
    发明公开
    Magnetic head and process for producing same 失效
    磁头及其制造方法

    公开(公告)号：EP0180218A3

    公开(公告)日：1987-11-25

    申请号：EP85113846

    申请日：1985-10-31

    Applicant: SANYO ELECTRIC CO., LTD.

    Inventor： Yoshisato, Yorinobu ,  Yasuda, Isao ,  Yoshikawa, Hideki ,  Kubota, Kenji ,  Taketa, Kazuhiko ,  Takahashi, Kazuhiko

    IPC: G11B05/29 ,  G11B05/10 ,  G11B05/115 ,  G11B05/105 ,  G11B05/17

    CPC classification number: G11B5/29 ,  G11B5/115 ,  G11B5/17 ,  Y10T29/49055 ,  Y10T29/49066

    Abstract: A magnetic head which comprises a pair of head chips 25, 26 each composed of a pair of plate-like magnetic cores 2,20, (21, 22) superposed on and joined to each other with a spacer 15 interposed therebetween and having a gap G1 (G2) at the junction, a pair of base plates joined to the pair of head chips 25, 26 individually and positioned on opposite sides of and in parallel to a plane containing the gaps G1, G2, each of the magnetic core having at one end thereof a head 31 with a small width substantially equal to the width of tracks and an end portion of increased width opposite to the head, a shield member 12 interposed between the head chips 25, 26 at the head portions, a stud portion 3 provided on at least one of the pair of magnetic cores and projecting toward the other core, and a coil 4 provided around the stud portion 3. A process is also disclosed for producing such magnetic heads wherein the pair of magnetic cores are positioned close to each other, and the gaps G1 and G2 are accurately positioned on the same plane.

    Step-up type magnetic head
    4.
    发明公开
    Step-up type magnetic head 失效
    升压型磁头

    公开(公告)号：EP0199522A3

    公开(公告)日：1988-06-08

    申请号：EP86302761

    申请日：1986-04-14

    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

    Inventor： Nakamura, Kazuo ,  Takahashi, Ken

    IPC: G11B05/17 ,  G11B05/31

    CPC classification number: G11B5/1278 ,  G11B5/17 ,  G11B5/312

    Abstract: A magnetic head integrally assembled with a step-up transformer. The magnetic head portion is formed on a lower substrate (9) by a thin film technology and the number of turns of the signal winding is 1 or a value near 1. The transformer portion mainly comprises a transformer magnetic circuit which is formed by the lower substrate (9) and upper substrate (16,17). A one-turn primary coil (12) of a thin film formed over the lower substrate (9) and a secondary coil (19) by a bulk wire are arranged so as to interlink the transformer portion. The head portion and the transformer portion are arranged very closely. The signal winding and primary coil winding (12) are formed by the same thin film process. The head portion and the transformer portion are densely coupled.

    Magnetic head
    5.
    发明公开
    Magnetic head 失效
    磁头

    公开(公告)号：EP0191635A3

    公开(公告)日：1988-03-30

    申请号：EP86300949

    申请日：1986-02-12

    Applicant: HITACHI, LTD.

    Inventor： Otomo, Shigekazu ,  Morikawa, Juichi ,  Kumasaka, Noriyuki ,  Fujiwara, Hideo ,  Yamashita, Takeo ,  Inagoya, Osamu ,  Tottori, Takeshi ,  Hayashi, Masashi

    IPC: G11B05/21 ,  G11B05/127 ,  G11B05/17 ,  G11B05/31

    CPC classification number: G11B5/3106 ,  G11B5/127 ,  G11B5/21

    Abstract: A magnetic head has a pair of members (11) of a magnetic metal coupled on a substrate (14, 14') of a non-magnetic material the pair of members having a functional gap therebetween. A coil (18) extending through a coil window (19) encircles both the non-magnetic substrate (14, 14') and the magnetic metal members (11). Also provided is a core part (12) of a high permeability ferrite which may be located so as to support the magnetic metal members (11) and the substrate (14, 14') or may be on a side surface of the head. The magnetic metal members may be linear in the surface of the head facing a magnetic recording medium, or may be V-shaped, with their apexes adjacent each other. A head according to the present invention has a high ratio C/√L(C being the output and L being the inductance) and has high output and low inductance. In addition, it exhibits low rubbing noise and is excellent in abrasion-resistance and mass-producibility.

    Abstract translation: 一种磁头具有一对在非磁性材料的基片（14,14'）上耦合的磁性金属构件（11），所述一对构件之间具有功能间隙。 延伸穿过线圈窗口（19）的线圈（18）环绕非磁性基板（14,14'）和磁性金属构件（11）。 还提供了高磁导率铁氧体的核心部件（12），其可以被定位以支撑磁性金属部件（11）和衬底（14,14'）或者可以位于头部的侧表面上。 磁性金属构件在磁头面向磁记录介质的表面中可以是线性的，或者可以是V形的，其顶点彼此相邻。 根据本发明的磁头具有高比率C /√L（C是输出，L是电感）并具有高输出和低电感。 另外，摩擦噪音小，耐磨损性和批量生产性优异。

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