发明名称 |
Method and apparatus for manufacturing glass substrate for storage medium, glass substrate for storage medium, and storage medium |
摘要 |
A method of manufacturing a glass substrate for a storage medium by pressing a glass material between an upper and a lower dies. The method includes a heating step of heating the glass material arranged between the upper and lower dies, a pressing step of pressing the heated glass material via the upper and lower dies, and a cooling step of having, after the pressing step, a cooling member contact the upper and lower dies to cool them together with the molded glass material arranged between the upper and lower dies. During the heating step and the pressing step, a vacuum atmosphere is maintained in a space containing the dies and the glass material. When the pressing step has completed, an inert gas is filled in the space to set a pressure in the space equal to an ambient pressure.
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申请公布号 |
US2004134232(A1) |
申请公布日期 |
2004.07.15 |
申请号 |
US20030725446 |
申请日期 |
2003.12.03 |
申请人 |
FUJI ELECTRIC DEVICE TECHNOLOGY CO., LTD.;MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
KAINUMA KENGO;KAWATA TATSUMI;HIBINO KUNIO;TOKUNAGA TOMOKAZU |
分类号 |
C03B11/00;C03B11/08;C03B11/12;G11B5/84;(IPC1-7):C03B11/12 |
主分类号 |
C03B11/00 |
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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