发明名称 |
Method for manufacturing a magnetic disk comprising a glass substrate |
摘要 |
A method for manufacturing a magnetic disk comprises the step of applying a continuous laser beam to both sides of a glass workpiece and etching both sides of the workpiece with an aqueous acidic fluoride-containing etching solution. The portion of the workpiece receiving the laser beam etches at a much faster rate than the portions of the workpiece that were not exposed to the laser beam. The workpiece is then broken along a line or curve formed by the above-mentioned steps. The resulting structure is a substrate used to form a magnetic disk. The disk is completed by depositing an underlayer, a magnetic layer and a protective overcoat on the substrate.
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申请公布号 |
US6664503(B1) |
申请公布日期 |
2003.12.16 |
申请号 |
US19990407630 |
申请日期 |
1999.09.28 |
申请人 |
ASAHI GLASS COMPANY, LTD. |
发明人 |
HSIEH JOHN;HOMOLA ANDREW;SALAMON DAVID VIGDOR;HODGES HOLLAND;BAJOREK CHRISTOPHER H. |
分类号 |
C03B23/02;C03B33/04;C03C15/00;C03C23/00;G11B5/84;(IPC1-7):B23K15/00 |
主分类号 |
C03B23/02 |
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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