Invention Grant
- Patent Title: Method of manufacturing a glass substrate for a magnetic disk and method of manufacturing a magnetic disk
- Patent Title (中): 制造磁盘用玻璃基板的方法及其制造方法
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Application No.: US13359011Application Date: 2012-01-26
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Publication No.: US09299382B2Publication Date: 2016-03-29
- Inventor: Hideo Sakai , Yoshihiro Tawara
- Applicant: Hideo Sakai , Yoshihiro Tawara
- Applicant Address: JP Tokyo
- Assignee: HOYA CORPORATION
- Current Assignee: HOYA CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2011-014990 20110127
- Main IPC: B24B37/28
- IPC: B24B37/28 ; G11B5/84 ; B24B7/22
Abstract:
A method of manufacturing a glass substrate for a magnetic disk includes a polishing step of polishing a main surface of a glass substrate by sandwiching the glass substrate between a pair of surface plates each having a polishing pad on its surface and by supplying a polishing liquid containing polishing abrasive particles between the glass substrate and the polishing pads. In the polishing step, the polishing liquid and each polishing pad are adjusted so that the friction coefficient falls in a range of 0.02 to 0.05.
Public/Granted literature
- US09183868B2 Method of manufacturing a glass substrate for a magnetic disk and method of manufacturing a magnetic disk Public/Granted day:2015-11-10
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