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    • 13. 发明授权
    • Magnetic head
    • 磁头
    • US4922360A
    • 1990-05-01
    • US249306
    • 1988-09-21
    • Hisashi TakanoNaoki KoyamaIsamu YuitoKazuo ShiikiHideo Tanabe
    • Hisashi TakanoNaoki KoyamaIsamu YuitoKazuo ShiikiHideo Tanabe
    • G11B5/39
    • G11B5/3987G11B5/399
    • A magnetic head includes a magnetoresistance element having the form of a loop and provided with a gap at a first portion opposite to a second portion confronting a magnetic recording medium, a coil conductor formed around the first portion of the magnetoresistance element for applying a bias magnetic field to the second portion of the magnetoresistance element in the direction of width of a track on the magnetic recording medium, and a lead conductor attached to the magnetoresistance element to cause a current which is necessary for detecting a signal recorded on the magnetic recording medium, to flow through the second portion of the magnetoresistance element, and formed together with the coil conductor as one body so that a part of a current supplied to the lead conductor flows through the coil conductor.
    • 磁头包括具有环形形式的磁阻元件,并且在与面对磁记录介质的第二部分相对的第一部分处设置有间隙,围绕磁阻元件的第一部分形成的线圈导体,用于施加偏磁 在磁记录介质上的轨道的宽度方向上的磁阻元件的第二部分的磁场和连接到磁阻元件的引线导体,以产生检测记录在磁记录介质上的信号所必需的电流, 流过磁阻元件的第二部分,并且与线圈导体一起形成为一体,使得供应到引线导体的电流的一部分流过线圈导体。
    • 19. 发明授权
    • Thin film magnetic head
    • 薄膜磁头
    • US4881144A
    • 1989-11-14
    • US142697
    • 1988-01-11
    • Isamu YuitoEijin MoriwakiKazuo ShiikiYoshihiro HamakawaHisashi Takano
    • Isamu YuitoEijin MoriwakiKazuo ShiikiYoshihiro HamakawaHisashi Takano
    • G11B5/31
    • G11B5/3163
    • In a thin film magnetic head of the type wherein a lower magnetic pole, a gap layer, a first insulating layer, a coil, a second insulating layer and an upper magnetic pole are formed sequentially on a substrate, the present invention provides a thin film magnetic head characterized in that a surface active layer made of aluminum oxide, for example, is disposed between the first insulating layer and the second insulating layer except where the coil is formed on the first insulating layer so that the surface active layer is disposed between the coil and the second insulating layer. According to the present invention, it is possible to prevent the occurrence of bubbles between coil conductors, and eventually to improve flatness of the surface of the second insulating layer and to prevent degradation of the characteristics of the upper magnetic pole.
    • 在基板上依次形成下列磁极,间隙层,第一绝缘层,线圈,第二绝缘层和上磁极的薄膜磁头,本发明提供一种薄膜 磁头,其特征在于,例如在第一绝缘层和第二绝缘层之间设置由氧化铝制成的表面有源层,除了在第一绝缘层上形成线圈之外,表面活性层设置在第一绝缘层之间 线圈和第二绝缘层。 根据本发明,能够防止线圈导体之间产生气泡,最终提高第二绝缘层的表面的平坦性,防止上磁极的特性劣化。