Method of manufacturing a glass substrate for a magnetic disk

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United States of America Patent

PATENT NO 8821747
APP PUB NO 20110204028A1
SERIAL NO

13122673

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Abstract

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A method for manufacturing a glass substrate for a magnetic disk comprises a surface grinding step of processing a mirror-surface plate glass, having a main surface in the form of a mirror surface, to a required flatness and surface roughness using fixed abrasive particles. The method comprises, before the surface grinding step using the fixed abrasive particles, a surface roughening step of roughening the surface of the mirror-surface plate glass by frosting.

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Patent Owner(s)

  • HOYA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mizuno, Takanori Tokyo, JP 18 196
Suzuki, Yosuke Tokyo, JP 125 539

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