发明名称 |
Magnetic recording medium and magnetic recording and reproducing apparatus |
摘要 |
A magnetic recording medium is provided in which recording elements and concave portions have a clear difference in terms of magnetism at the boundaries therebetween, and which has favorable production efficiency. The magnetic recording medium includes a substrate; a recording layer formed in a predetermined concavo-convex pattern over the substrate, convex portions of the concavo-convex pattern serving as recording elements; and a filler portion filling a concave portion between the recording elements. A center part of a bottom surface of the concave portion protrudes from edge parts of the bottom surface of the concave portion in a direction away from the substrate. |
申请公布号 |
US8298691(B2) |
申请公布日期 |
2012.10.30 |
申请号 |
US20100659407 |
申请日期 |
2010.03.08 |
申请人 |
UCHIYAMA YOSHINORI;SUWA TAKAHIRO;FUKUZAWA NARUTOSHI;SHIMAKAWA KAZUYA;TDK CORPORATION |
发明人 |
UCHIYAMA YOSHINORI;SUWA TAKAHIRO;FUKUZAWA NARUTOSHI;SHIMAKAWA KAZUYA |
分类号 |
G11B5/66 |
主分类号 |
G11B5/66 |
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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