Title:
GLASS SUBSTRATE FOR USE IN INFORMATION RECORDING MEDIUM, AND MANUFACTURING METHOD AND MANUFACTURING DEVICE OF GLASS SUBSTRATE FOR USE IN INFORMATION RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2014/103985
Kind Code:
A1
Abstract:
A polishing process involves a process for arranging a glass substrate and a carrier between a sun gear (40) and an internal gear (50), and a process for polishing the surface of the glass substrate by rotating the carrier in a state in which the outer periphery of the carrier meshes with tooth surfaces (42, 52). All tooth surfaces (42) and/or all tooth surfaces (52) include recesses (41, 51) having a shape recessed from the tooth tips, and the outer periphery of the carrier meshes with the recesses (41, 51) when the carrier rotates. Defining DC (unit: m) as the pitch circle diameter of the carrier and d (unit: mm) as the recess depth of the recesses (41, 51) from the tooth tips, the relation holds that 0.24 ≦ d/DC ≦ 1.89.
Inventors:
KOMATSU TAKAFUMI (JP)
Application Number:
PCT/JP2013/084419
Publication Date:
July 03, 2014
Filing Date:
December 24, 2013
Export Citation:
Assignee:
HOYA CORP (JP)
International Classes:
B24B37/28; B24B37/08; C03C19/00; G11B5/84
Foreign References:
| JPH0425374A | 1992-01-29 | |||
| JPH0425376A | 1992-01-29 | |||
| JPH11179649A | 1999-07-06 | |||
| JPH11254303A | 1999-09-21 |
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
Patent business corporation Fukami patent firm (JP)
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