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Title:
ROTARY GRIND STONE AND METHOD FOR PRODUCTION OF GLASS SUBSTRATE FOR MAGNETIC DISK
Document Type and Number:
Japanese Patent JP2014161989
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a rotary grind stone for highly accurately grinding the end face of a disk-like substrate to a target shape, and also to provide a method for production of a glass substrate for magnetic disk using the rotary grind stone in a grinding treatment.SOLUTION: When grinding the end face of a disk-like substrate 10 while inclining a rotational axis 14 of a rotary grind stone 12 to an axis orthogonal to the main surface of the disk-like substrate 10, a cross-sectional shape formed by cutting the grinding surface of the rotary grind stone 12 contacting with the end face of the disk-like substrate 10 along the plane containing the rotary axis 14 is protruded toward the end face of the disk-like substrate 10. The end face of the disk-like substrate 10 is ground using this rotary grind stone 12.

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Inventors:
OZAWA HIROAKI
Application Number:
JP2013038041A
Publication Date:
September 08, 2014
Filing Date:
February 27, 2013
Export Citation:
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Assignee:
HOYA CORP
International Classes:
B24D5/00; B24B5/12; B24B9/00; B24B9/10; G11B5/84
Attorney, Agent or Firm:
Global IP Tokyo patent business corporation



 
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