发明名称 |
Perpendicular magnetic recording media, magnetic recording apparatus |
摘要 |
A perpendicular magnetic recording medium which has been improved to be suitable for high-density magnetic recording and a magnetic recording apparatus using the medium are provided. The magnetic back film of a dual-layer perpendicular recording medium is caused to be constituted by a plurality of layers, and a keeper layer 17 for keeping perpendicular magnetization and layers 13 and 15 for improving the recording efficiency of a recording head are functionally separated from one another. Further, the magnetization orientations of the soft magnetic films excluding the keeper layer are defined to be in the circumferential direction of the disk, whereby the frequency of occurrence of noise is decreased.
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申请公布号 |
US2004062953(A1) |
申请公布日期 |
2004.04.01 |
申请号 |
US20030664870 |
申请日期 |
2003.09.22 |
申请人 |
FUTAMOTO MASAAKI;YOSHIDA KAZUETSU;HONDA YUKIO;HIRAYAMA YOSHIYUKI;KIKUGAWA ATSUSHI |
发明人 |
FUTAMOTO MASAAKI;YOSHIDA KAZUETSU;HONDA YUKIO;HIRAYAMA YOSHIYUKI;KIKUGAWA ATSUSHI |
分类号 |
G11B5/667;G11B5/02;G11B5/64;G11B5/65;G11B5/66;G11B5/73;G11B5/738;(IPC1-7):B32B9/00 |
主分类号 |
G11B5/667 |
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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