| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a manufacturing method of a magnetic disk glass substrate, capable of improving accuracy of form of an end surface of a glass substrate and allowing high quality.SOLUTION: A rotation axis of magnetic generation means for forming and holding magnetic slurry mass containing magnetic viscous fluid and polishing abrasive grain is inclined with respect to an axis orthogonal to a principal face of a glass substrate. While in this state, both a side wall surface of an end surface of the glass substrate and a chamfered face interposed between a principal face of the glass substrate and the side wall surface are polished by bringing the end surface of the glass substrate into contact with the magnetic slurry mass.</p> |
