| 摘要 |
PROBLEM TO BE SOLVED: To provide a device and method for polishing, and a manufacturing method for a glass substrate for a magnetic disk, and the method for the magnetic disk capable of uniformly polishing a chamfering part of the substrate end surface for the front and back surface even when a rotary brush having an orientation pattern is used. SOLUTION: The polishing device is equipped with a pair of rotary brushes 2, 3 contacting with an outer peripheral surface of a disk-like or column-shaped object 1 to be polished, and polishes the outer peripheral surface of the object 1 to be polished by rotating the object 1 to be polished and the pair of rotary brushes 2, 3 to the same direction at the parallel axis center to each other. The pair of rotary brushes 2, 3 have spiral shape orientation pattern respectively, and the orientation patterns of the respective rotary brushes 2, 3 are provided so as to be in a reverse direction to each other. COPYRIGHT: (C)2007,JPO&INPIT |
