发明名称 |
Magnetic recording medium |
摘要 |
Disclosed is a magnetic recording medium comprising a non-magnetic support, and a first magnetic layer, a second magnetic layer and a third magnetic layer laminated on a non-magnetic support surface in this order, a total layer thickness of the second magnetic layer and the third magnetic layer of 0.7 mu m or less, and a coercive force of a ferromagnetic powder contained in the third magnetic layer being 1.2 to 2.5 times as strong as a coercive force of a ferromagnetic powder contained in the first magnetic layer.
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申请公布号 |
US5094904(A) |
申请公布日期 |
1992.03.10 |
申请号 |
US19910673970 |
申请日期 |
1991.03.22 |
申请人 |
KONICA CORPORATION |
发明人 |
KAWAKAMI, AKIRA;ANDO, YASUO;NISHIKAWA, TAKUO;REN, RIEKO;EDAMATSU, MIKI |
分类号 |
C09D5/23;C09D7/12;G11B5/702;G11B5/716 |
主分类号 |
C09D5/23 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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