发明名称 |
Glass substrate for magnetic recording medium, magnetic recording medium, and method of manufacturing the same |
摘要 |
In a glass substrate for use in a magnetic recording medium, a surface roughness of at least a principal surface of the glass substrate is measured by the use of the interatomic force microscope (AFM), Ra falls within the range between 0.2 and 2.5 nm, Rmax falls within the range between 3 and 25 nm, and Rmax/Ra falls within the range between 3 and 35.
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申请公布号 |
US6383404(B1) |
申请公布日期 |
2002.05.07 |
申请号 |
US19990377151 |
申请日期 |
1999.08.19 |
申请人 |
HOYA CORPORATION |
发明人 |
SAKAI HIROYUKI;ONO KATSUTOSHI;MATSUDA SYOJI |
分类号 |
C03C15/00;C03C15/02;C03C19/00;G11B5/84;(IPC1-7):C03C17/00 |
主分类号 |
C03C15/00 |
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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