Title:
METHOD FOR MANUFACTURING SUBSTRATE FOR MAGNETIC DISK AND END SURFACE POLISHING DEVICE
Document Type and Number:
Japanese Patent JP2016126808
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a substrate for a magnetic disk, in which a productivity can be further improved by improving a polishing rate at an end surface of the substrate for a magnetic disk.SOLUTION: A method polishes an end surface on the outer peripheral side of a disk-shaped substrate by forming a magnetic slurry mass containing a magnetic substance and abrasive grains in a ring shape by magnetism generating means, bringing the end surface on the outer peripheral side of the disk-shaped substrate into contact with the inner peripheral side of the magnetic slurry mass formed in the ring shape, and moving the magnetic slurry mass formed in the ring shape and the disk-shaped substrate relatively.SELECTED DRAWING: Figure 2
Inventors:
AZUMA SHUHEI
TAKAHASHI TAKEYOSHI
TAKAHASHI TAKEYOSHI
Application Number:
JP2014267109A
Publication Date:
July 11, 2016
Filing Date:
December 31, 2014
Export Citation:
Assignee:
HOYA CORP
International Classes:
G11B5/84; B24B1/00; B24B31/112; B24B37/00
Attorney, Agent or Firm:
Takeshi Otsuka