发明名称 Magnetic recording medium
摘要 A magnetic recording medium comprising a non-magnetic substrate having thereon a non-magnetic underlayer, a magnetic recording layer, a soft magnetic layer and a protective layer, wherein the coercivity is 2,500 Oe or more and the thickness of the soft magnetic layer is from 5 to 50 Å.
申请公布号 US6815097(B2) 申请公布日期 2004.11.09
申请号 US20020078659 申请日期 2002.02.21
申请人 SHOWA DENKO K.K. 发明人 YOSHIKAWA TOSHIHIKO;SAKAWAKI AKIRA;SAKAI HIROSHI
分类号 G11B5/64;G11B5/66;G11B5/73;(IPC1-7):G11B5/66;G11B5/70 主分类号 G11B5/64
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