发明名称 |
GLASS SUBSTRATE FOR MAGNETIC DISK AND METHOD FOR MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK |
摘要 |
A method for manufacturing a glass substrate for magnetic disk is provided. The method includes a forming process of press-forming a lump of molten glass using a pair of dies, wherein in the forming process, the cooling rate of the molten glass during pressing is controlled so that a first compressive stress layer is formed on a pair of principal faces of a glass blank that is press formed, and the method includes a chemically strengthening process for forming a second compressive stress layer on a pair of principal faces of a glass substrate formed using the glass blank after the forming process. |
申请公布号 |
US2014050912(A1) |
申请公布日期 |
2014.02.20 |
申请号 |
US201214001770 |
申请日期 |
2012.06.29 |
申请人 |
ISONO HIDEKI;TANINO HIDEKAZU;MURAKAMI AKIRA;SATO TAKASHI;SATO MASAMUNE;HOYA CORPORATION |
发明人 |
ISONO HIDEKI;TANINO HIDEKAZU;MURAKAMI AKIRA;SATO TAKASHI;SATO MASAMUNE |
分类号 |
G11B5/84;C03B11/12;C03C21/00;G11B5/735 |
主分类号 |
G11B5/84 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|