发明授权
- 专利标题: Magnetic head
- 专利标题(中): 磁头
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申请号: US264706申请日: 1981-05-18
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公开(公告)号: US4439794A公开(公告)日: 1984-03-27
- 发明人: Yoshihiro Shiroishi , Hideo Fujiwara , Takeshi Kimura , Noriyuki Kumasaka , Nobuo Kobayashi , Takeo Yamashita , Teizo Tamura , Hideo Zama , Mitsuhiro Kudo , Tsutomu Iimura
- 申请人: Yoshihiro Shiroishi , Hideo Fujiwara , Takeshi Kimura , Noriyuki Kumasaka , Nobuo Kobayashi , Takeo Yamashita , Teizo Tamura , Hideo Zama , Mitsuhiro Kudo , Tsutomu Iimura
- 申请人地址: JPX Tokyo JPX Tokyo
- 专利权人: Hitachi, Ltd.,Hitachi Metals, Ltd.
- 当前专利权人: Hitachi, Ltd.,Hitachi Metals, Ltd.
- 当前专利权人地址: JPX Tokyo JPX Tokyo
- 优先权: JPX55/63938 19800516
- 主分类号: G11B5/127
- IPC分类号: G11B5/127 ; G11B5/133 ; G11B5/187 ; G11B5/193 ; G11B5/23 ; G11B5/251 ; G11B5/14
摘要:
A magnetic head which uses single crystal Mn-Zn ferrite containing up to 7% by weight of SnO.sub.2 occluded therein without being allowed to separate and which has such a construction that glass having a contraction rate lower than that of ferrite is filled in the narrowed portion near the gap, the plane forming the principal magnetic circuit of the core is allowed to coincide with the {110} plane of the ferrite and an angle .theta. between the direction inside the {110} plane of the ferrite and the gap-forming plane is from 5.degree. to 40.degree. or 85.degree. to 120.degree.. The magnetic head having such a construction has a reduced modulation noise and extremely excellent write-and-read characteristics.
公开/授权文献
- US5461913A Differential current thermal mass flow transducer 公开/授权日:1995-10-31