Invention Grant
US08141386B2 Method for fabricating a glass substrate for an information recording medium, and magnetic disk using the same
有权
用于制造用于信息记录介质的玻璃基板的方法和使用其的磁盘
- Patent Title: Method for fabricating a glass substrate for an information recording medium, and magnetic disk using the same
- Patent Title (中): 用于制造用于信息记录介质的玻璃基板的方法和使用其的磁盘
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Application No.: US11824768Application Date: 2007-07-02
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Publication No.: US08141386B2Publication Date: 2012-03-27
- Inventor: Hideki Kawai , Yukitoshi Nakatsuji , Hiroaki Sawada , Shinichi Saeki
- Applicant: Hideki Kawai , Yukitoshi Nakatsuji , Hiroaki Sawada , Shinichi Saeki
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta Opto, Inc.
- Current Assignee: Konica Minolta Opto, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Brinks Hofer Gilson & Lione
- Priority: JP2006-183097 20060703
- Main IPC: C23G1/00
- IPC: C23G1/00 ; C03C3/085 ; C03C3/095
Abstract:
A method for fabricating a glass substrate containing SiO2 as a main ingredient thereof for an information recording medium which ensures removal of abrasive or foreign mater adhered to the glass substrate without complicating a cleaning step, involves, after a polishing step, keeping the surface of the glass substrate in contact with a liquid having a Si element elution in a range from 100 to 10 000 ppb/mm2 before a scrub-cleaning step.
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