发明名称 Composite type magnetic head for recording and reproducing high frequency signals
摘要 There is provided a structure of a composite type magnetic head and its manufacturing method. The composite type magnetic head comprises: two high permeability ferrite blocks with projections having nearly edged sections formed thereon; magnetic films having a high saturation flux density deposited on the side faces of the projections, the magnetic films confronting each other via a functional gap near front ends of said projections; guard films deposited over the magnetic films comprising a non-magnetic material; and non-magnetic materials filled on the guard films up to side face of the coil. This magnetic head exhibits excellent recording and reproducing characteristics. The contour effect is negligibly small. The reaction between the magnetic film and the non-magnetic material is prevented by the guard film.
申请公布号 US4656547(A) 申请公布日期 1987.04.07
申请号 US19840608407 申请日期 1984.05.09
申请人 HITACHI, LTD. 发明人 KUMASAKA, NORIYUKI;FUJIWARA, HIDEO;OTOMO, SHIGEKAZU;YAMASHITA, TAKEO;TAKAYAMA, SHINJI;SAITO, NORITOSHI;KUDO, MITSUHIRO
分类号 G11B5/127;G11B5/187;G11B5/23;G11B5/245;(IPC1-7):G11B5/147;G11B5/17 主分类号 G11B5/127
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