METHOD FOR MANUFACTURING GLASS PLATE FOR MAGNETIC DISK, AND METHOD FOR MANUFACTURING MAGNETIC DISK

摘要

PROBLEM TO BE SOLVED: To improve the edge shape precision of the glass plate for a magnetic disk while reducing the machining costs of inner and outer edges thereof. SOLUTION: The method for manufacturing a magnetic disk glass plate 1 includes a chamfering step of chamfering the inner and outer edges of the glass plate 1 by using a polishing tape 31, and a polishing step of polishing the inner and outer edges of the glass plate 1 by using the polishing tape 31 following the chamfering step. COPYRIGHT: (C)2011,JPO&INPIT