Invention Grant
US08113014B2 Method of manufacturing glass substrate for recording medium, glass substrate for recording medium, recording medium and holding jig
有权
用于记录介质的玻璃基板，记录介质用玻璃基板，记录介质和保持夹具的方法
- Patent Title: Method of manufacturing glass substrate for recording medium, glass substrate for recording medium, recording medium and holding jig
- Patent Title (中): 用于记录介质的玻璃基板，记录介质用玻璃基板，记录介质和保持夹具的方法
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Application No.: US12312799Application Date: 2007-11-08
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Publication No.: US08113014B2Publication Date: 2012-02-14
- Inventor: Toru Watanabe , Kenichi Sasaki
- Applicant: Toru Watanabe , Kenichi Sasaki
- 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: JP2006-326933 20061204
- International Application: PCT/JP2007/071709 WO 20071108
- International Announcement: WO2008/068997 WO 20080612
- Main IPC: G11B5/62
- IPC: G11B5/62 ; C03C17/22 ; B23Q3/00 ; B32B3/00 ; B05D3/02
Abstract:
Provided is a method of manufacturing a glass substrate efficiently via prevention of foreign matter adhesion to a glass substrate as to chemical strengthening. Disclosed is a method of manufacturing a glass substrate for a recording medium possessing the step of conducting a chemical strengthening process by which a glass substrate held by a holding jig and the holding jig are immersed in a chemical strengthening solution, and 1st alkali metal ion on a surface of the glass substrate is substituted by 2nd alkali metal ion having a larger ion diameter than that of 1st alkali metal ion contained in the chemical strengthening solution, wherein the holding jig possesses a member of material made of a metal comprising an alkali metal element, or a metal film comprising an alkali metal element to cover a surface of the holding jig from the very beginning of the chemical strengthening process.
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