发明名称 |
Glass substrate for magnetic recording medium, production method thereof, and magnetic recording medium using the substrate |
摘要 |
The present invention provides a production method of a glass substrate for magnetic recording medium having an inner diameter and an outer diameter comprising an edge polishing step of a glass substrate. In one embodiment of the production method, it has the edge polishing step in which the inner or outer diameter of the glass substrate is chucked, in a single disk process, and the edge surface of the outer or inner diametral side of the glass substrate is polished using a polishing tape or a grindstone. Further, the present invention relates to a magnetic recording medium using the glass substrate. The production method of a glass substrate of the present invention can perform a polishing of edge surface in a high-quality without generating a defect on the surface of the glass substrate. The present invention can provide a superior magnetic recording medium by using the glass substrate.
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申请公布号 |
US2002142707(A1) |
申请公布日期 |
2002.10.03 |
申请号 |
US20020052495 |
申请日期 |
2002.01.23 |
申请人 |
SHIMADA TAKASHI;HIBINO KUNIO;ITOU KENTA |
发明人 |
SHIMADA TAKASHI;HIBINO KUNIO;ITOU KENTA |
分类号 |
B24B5/50;B24B9/06;B24B21/00;C03C19/00;G11B5/73;G11B5/84;G11B23/00;(IPC1-7):B24B1/00 |
主分类号 |
B24B5/50 |
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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