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公开(公告)号:US5218500A
公开(公告)日:1993-06-08
申请号:US813751
申请日:1991-12-31
申请人: Hiroyuki Okuda , Isao Tanaka , Jyoichi Tamada , Kazuo Ino , Takashi Ogura , Fumio Kameoka , Kouzo Ishihara
发明人: Hiroyuki Okuda , Isao Tanaka , Jyoichi Tamada , Kazuo Ino , Takashi Ogura , Fumio Kameoka , Kouzo Ishihara
IPC分类号: G11B5/187
CPC分类号: G11B5/1878 , G11B5/1874
摘要: With a view to solving the problem of "pseudo-gap" in a parallel type MIG head and to improving its reproduction output, effective combinations of the principal magnetic path forming face and the gap-forming face were determined empirically for the case of using a single-crystal ferrite core material. The improved magnetic head comprises a pair of magnetic core halves made of a single-crystal ferrite, at least one of said magnetic core halves having a thin ferromagnetic metal film formed on the gap-forming face, and said thin ferromagnetic metal film abutting against the other magnetic core half with a non-magnetic material being interposed to form a magnetic gap, the improvement wherein the principal magnetic path forming face of the magnetic core half provided with said thin ferromagnetic metal film has a crystal plane generally designated {211} whereas a vector A that is parallel to the crystal axis in said principal magnetic path forming face and that is directed away from the gap-forming face forms an angle .theta. of the range 0.degree.-60.degree. or 150.degree.-180.degree. with a vector B that is parallel to the intersection of the principal magnetic path forming face and the gap-forming face and that approaches the face opposite to a recording medium.
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公开(公告)号:US5270894A
公开(公告)日:1993-12-14
申请号:US28171
申请日:1993-03-09
申请人: Horiyuki Okuda , Isao Tanaka , Jyoichi Tamada , Kazuo Ino , Takashi Ogura , Fumio Kameoka , Kouzo Ishihara
发明人: Horiyuki Okuda , Isao Tanaka , Jyoichi Tamada , Kazuo Ino , Takashi Ogura , Fumio Kameoka , Kouzo Ishihara
CPC分类号: G11B5/1874 , G11B5/1878
摘要: A parallel type MIG (Metal in Gap) magnetic head includes single-crystal ferrite core halves with a thin ferromagnetic film formed on the gap-forming face of at least one of the core halves. The core halves are joined together using a glass having an Fe content in the range of 2-13 at %. The crystalline geometry of the principal magnetic path forming faces and gap forming faces of the core halves is selected to minimize the pseudo-gap problem and to improve reproduction output.
摘要翻译: 平行式MIG(金属间隙)磁头包括形成在至少一个芯半部的间隙形成面上的薄铁磁膜的单晶铁氧体磁芯半部。 使用Fe含量在2-13at%范围内的玻璃将核心半部连接在一起。 选择主磁路形成面和芯半部的间隙形成面的结晶几何形状以最小化伪间隙问题并提高再现输出。
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