发明名称 |
Glass substrate for an information recording medium and information recording medium employing it |
摘要 |
A chemically strengthened glass substrate for use as the substrate of an information recording medium such as a magnetic disk, magneto-optical disk, DVD, or MD, wherein a strengthened layer formed by chemical strengthening exists on the outer edge surface and on the inner edge surface but substantially not on a surface on which an information recording layer is formed.
|
申请公布号 |
US2005096210(A1) |
申请公布日期 |
2005.05.05 |
申请号 |
US20040784447 |
申请日期 |
2004.02.23 |
申请人 |
KONICA MINOLTA OPTO, INC. |
发明人 |
KAWAI HIDEKI |
分类号 |
C03C3/083;C03C3/085;C03C3/087;C03C3/091;C03C3/093;C03C3/095;C03C19/00;C03C21/00;G11B5/73;G11B7/253;(IPC1-7):C03C3/083;G11B5/82 |
主分类号 |
C03C3/083 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|