发明名称 STATIC FIELD MAGNETIC ERASE HEAD WITH REDUCED DISTORTION
摘要 <p>The present invention relates to an erasing head for a magnetic recording apparatus using a static magnetic field. The erasing head consists of a plurality of magnetic poles having surfaces which confront the recording tape. The first and second poles have polarities opposite to each other. The first pole is arranged to engage a recording track along its full width and magnetizes it to a given polarity. The second pole is arranged to engage the upper half of the track and magnetize it to the opposite polarity. Each half track is magnetized to opposite polarities so that the distortion of output signals is reduced, when the signal is reproduced by a reproducing head engaging both half tracks.</p>
申请公布号 CA1030655(A) 申请公布日期 1978.05.02
申请号 CA19740210507 申请日期 1974.10.01
申请人 SONY CORPORATION 发明人 SAITO, MAKOTO;MATSUMOTO, KENGO;HAYAKAWA, KIYONORI
分类号 G11B5/03;G11B23/00;(IPC1-7):11B5/22 主分类号 G11B5/03
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