Title:
METHOD FOR MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK AND METHOD FOR MANUFACTURING MAGNETIC DISK
Document Type and Number:
WIPO Patent Application WO/2015/046596
Kind Code:
A1
Abstract:
The present invention provides a method for manufacturing a glass substrate for a magnetic disk, the method capable of performing stable grinding processing with increased processing speed in grinding processing using fixed abrasive grains, and manufacturing a high-quality glass substrate.
In the present invention, the correlation between the average distances between fixed abrasive grains on the grinding surfaces of fixed abrasive grain grinding wheels and processing speeds when a mirror surface-shaped glass substrate surface is subjected to grinding processing using the fixed abrasive grain grinding wheels is obtained in advance, a fixed abrasive grain grinding wheel having an average distance between abrasive grains at which a desired processing speed is obtained is selected on the basis of the obtained correlation, and grinding processing treatment is performed using the selected fixed abrasive grain grinding wheel.
Inventors:
ISHII SATOSHI (PH)
Application Number:
PCT/JP2014/076187
Publication Date:
April 02, 2015
Filing Date:
September 30, 2014
Export Citation:
Assignee:
HOYA CORP (JP)
HOYA GLASS DISK PHILIPPINES INC (PH)
HOYA GLASS DISK PHILIPPINES INC (PH)
International Classes:
G11B5/84
Foreign References:
| JPH09216151A | 1997-08-19 | |||
| JP2012027976A | 2012-02-09 | |||
| JP2013071212A | 2013-04-22 |
Attorney, Agent or Firm:
OTSUKA TAKEFUMI (JP)
Takeshi Otsuka (JP)
Takeshi Otsuka (JP)
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