Title:
HDD GLASS SUBSTRATE MANUFACTURING METHOD
Document Type and Number:
WIPO Patent Application WO/2013/099087
Kind Code:
A1
Abstract:
This HDD glass substrate manufacturing method involves an end face polishing step in which an end surface of a glass substrate is polished using a first abrasive slurry containing at least one of zirconia and zircon, and a rough polishing step in which, continuing from the end face polishing step, both main surfaces of the glass substrate are polished using a second abrasive slurry containing cerium oxide. By means of this manufacturing method, a glass substrate can be manufactured which sags less in the end regions of both main surfaces, and on which a magnetic head can stably levitate in the end region.
Inventors:
NAKAE HAZUKI (JP)
Application Number:
PCT/JP2012/007202
Publication Date:
July 04, 2013
Filing Date:
November 09, 2012
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
G11B5/84; B24B37/00; C03C3/083; C03C19/00; C03C21/00
Foreign References:
| JP2012185891A | 2012-09-27 | |||
| JP2011014177A | 2011-01-20 |
Attorney, Agent or Firm:
KOTANI, Etsuji et al. (JP)
Etsuji Kotani (JP)
Etsuji Kotani (JP)
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