发明名称 Magnetic head
摘要 A magnetic head for reading-out information magnetically recorded on a magnetic recording medium in a waveform varying between two different phases. The magnetic head includes at least one block of high magnetic permeability disposed adjacent to and directly facing a surface of the magnetic recording medium to be read-out so as to provide a magnetic path for passing therethrough magnetic flux emanating from the magnetic record on the magnetic recording medium. A magnetic material member is disposed adjacent to the at least one block so as to cause the magnetic flux emanating from the magnetic record on the magnetic recording medium to pass therethrough and is responsive to transition of the magnetic flux corresponding to variation from one phase to another phase in the waveform representing the recorded information so as to provide a predetermined physical effect. Further, a detecting arrangement is provided for the detecting the predetermined physical effect.
申请公布号 US4777553(A) 申请公布日期 1988.10.11
申请号 US19860919424 申请日期 1986.10.16
申请人 HITACHI, LTD. 发明人 AOI, HAJIME;KUGIYA, FUMIO;TAMURA, TAKASHI
分类号 G11B5/02;G11B5/127;G11B5/31;G11B5/39;G11B11/10;G11B11/105;(IPC1-7):G11B5/12;G11B5/22 主分类号 G11B5/02
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