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    Magnetic head having separate fusion glass and laminating glass with a track adjustment groove in a magnetic core block
    1.
    发明授权
    Magnetic head having separate fusion glass and laminating glass with a track adjustment groove in a magnetic core block 失效
    磁头具有单独的熔融玻璃，并且在磁芯块中具有轨道调节槽的层压玻璃

    公开(公告)号：US5519556A

    公开(公告)日：1996-05-21

    申请号：US164793

    申请日：1993-12-10

    申请人： Tadashi Saito ,  Shinji Takahashi ,  Toshinobu Watanabe

    发明人： Tadashi Saito ,  Shinji Takahashi ,  Toshinobu Watanabe

    IPC分类号： G11B5/127 ,  G11B5/187 ,  G11B5/23 ,  G11B5/133

    CPC分类号： G11B5/1875 ,  G11B5/1274 ,  Y10T428/1193

    摘要： A magnetic head capable of preventing erosion of the magnetic metal film despite the absence of a protective film and preventing a decrease in the playback output due to decrease of the track width while preventing cracking from being initiated and developed in the ferrite substrate is disclosed. The magnetic head is prepared by forming magnetic core half blocks and by bonding the core half blocks via gap bonding, each of the magnetic core half blocks being previously formed by stacking a ferrite substrate on another ferrite substrate having magnetic metal films via glass films and forming track width adjustment grooves. The glass transition temperature Tg of the glass employed for stacking the ferrite substrates is set so as to be higher than the glass yield point Tc of the fusion glass.

    摘要翻译： 公开了一种磁头，其能够防止磁性金属膜的侵蚀，尽管没有保护膜，并且防止由于轨道宽度的减小而导致的回放输出的减少，同时防止在铁氧体基底中引发和显影的裂纹。 通过形成磁芯半块并通过间隙接合来形成磁芯半块来制备磁头，每个磁芯半块预先通过将铁氧体衬底叠置在具有磁性金属膜的另一个铁氧体衬底上经玻璃膜形成，并形成 轨道宽度调节槽。 将用于层叠铁素体基板的玻璃的玻璃化转变温度Tg设定为高于熔融玻璃的玻璃屈服点Tc。