发明名称 |
Process for producing glass substrate for magnetic recording medium and glass substrate for magnetic recording medium obtained by the same |
摘要 |
A process for producing a glass substrate for a magnetic recording medium by forming a surface roughness in a main surface of a glass plate that has been formed into a disk shape, includes: imparting a processing mark having a permanent strain to the main surface of the glass plate in a circumferential direction thereof; and chemically etching the whole main surface of the glass plate, so as to form the surface roughness.
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申请公布号 |
US2002127432(A1) |
申请公布日期 |
2002.09.12 |
申请号 |
US20010015683 |
申请日期 |
2001.12.17 |
申请人 |
NIPPON SHEET GLASS CO., LTD. |
发明人 |
SAITO YASUHIRO;IKEDA HIROSHI;KURACHI JUNJI;MITANI KAZUISHI |
分类号 |
C03C15/00;C03C3/083;C03C3/085;C03C3/087;C03C10/10;C03C19/00;C03C21/00;G11B5/73;G11B5/84;(IPC1-7):G11B5/82 |
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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