Method of manufacturing a glass substrate for a magnetic disk and method of manufacturing a magnetic disk
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United States of America Patent
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Mar 29, 2016
Grant Date -
Aug 2, 2012
app pub date -
Jan 26, 2012
filing date -
Jan 26, 2012
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Withdrawn
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Abstract
A method of manufacturing a glass substrate for a magnetic disk includes a polishing step of polishing a main surface of a glass substrate by sandwiching the glass substrate between a pair of surface plates each having a polishing pad on its surface and by supplying a polishing liquid containing polishing abrasive particles between the glass substrate and the polishing pads. In the polishing step, the polishing liquid and each polishing pad are adjusted so that the friction coefficient falls in a range of 0.02 to 0.05.
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