| 发明名称 |
MAGNETIC-DISK GLASS SUBSTRATE AND MAGNETIC DISK |
| 摘要 |
A magnetic-disk glass substrate of the present invention has an average value of squares of inclinations of 0.0025 or less and a frequency at which squares of inclinations are 0.004 or more of 15% or less, in a case where samples of inclinations on a main surface are obtained at intervals of 10 nm. |
| 申请公布号 |
US2015213826(A1) |
申请公布日期 |
2015.07.30 |
| 申请号 |
US201314424261 |
申请日期 |
2013.06.28 |
| 申请人 |
HOYA CORPORATION ;HOYA GLASS DISK VIETNAM II LTD. |
发明人 |
Itaya Masanobu;Osakabe Kinobu;Takizawa Toshio |
| 分类号 |
G11B5/82;G11B5/73 |
主分类号 |
G11B5/82 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A magnetic-disk glass substrate in which an average value of squares of inclinations is 0.0025 or less and a frequency at which squares of inclinations are 0.004 or more is 15% or less, in a case where samples of inclinations on a main surface are obtained at intervals of 10 nm. |
| 地址 |
Tokyo JP |
