发明名称 |
Glass substrate for perpendicular magnetic recording disk and method of producing same |
摘要 |
A glass substrate for perpendicular magnetic recording, having a surface with an average surface roughness of 2.0 � or less and surface height variations of 1 � or less with wavelengths in the range of 0.05 mm-0.5 mm in both radial and circumferential directions, is produced by rotating a glass substrate, supplying polishing slurry containing a specified amount of abrading particles of artificial diamond on its surface, pressing a polishing tape on the surface and causing this polishing tape to travel in a direction opposite to the direction of rotation of the glass substrate. |
申请公布号 |
US2005238927(A1) |
申请公布日期 |
2005.10.27 |
申请号 |
US20050114256 |
申请日期 |
2005.04.25 |
申请人 |
NIHON MICROCOATING CO., LTD. |
发明人 |
HORIE YUJI;TANIFUJI TATSUYA;KUMASAKA NORIYUKI |
分类号 |
B24B21/00;B05D1/00;B05D3/00;B24B21/04;B24B37/00;B24B37/04;B32B1/00;C03C19/00;C03C21/00;G11B5/73;G11B5/84;(IPC1-7):B05D1/00 |
主分类号 |
B24B21/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|