发明公开
- 专利标题： Perpendicular magnetic recording medium
- 专利标题（中）： 全能磁记录介质
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申请号： EP83305815申请日： 1983-09-28
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公开(公告)号： EP0105705A3公开(公告)日： 1986-03-19
- 发明人: Uesaka, Yasutaro , Hishiyama, Sadao , Kitada, Masahiro , Shimizu, Noboru , Tanabe, Hideo , Fujiwara, Hideo
- 申请人： HITACHI, LTD. , Hitachi Maxell Ltd.
- 专利权人： HITACHI, LTD.,Hitachi Maxell Ltd.
- 当前专利权人： HITACHI, LTD.,Hitachi Maxell Ltd.
- 优先权： JP17105882 19821001
- 主分类号： G11B05/66
- IPC分类号： G11B05/66 ; G11B05/70
摘要：
in a perpendicular magnetic recording medium comprising a high permeability film (3) and a perpendicular magnetization film (4) which are laminated on a non-magnetic substrate (1), a perpendicular magnetic recording medium (5) is provided wherein a permanent magnet film (2) is further sandwiched between the non-magnetic substrate (1) and the high permeability film (3), thereby eliminating a spike noise.
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