Title:
MAGNETIC RECORDING MEDIUM
Document Type and Number:
Japanese Patent JPS59139180
Kind Code:
A
Abstract:
PURPOSE:To obtain a magnetic recording medium enabled to remove noises due to static electricity by using conductive hubs. CONSTITUTION:A projected part 11 and a recessed part 12 of the hubs are constituted by metal such as Al. A disc 13 is calked at a chack hole part by using two hubs 11, 12 to form a magnetic recording medium. The formed magnetic recording medium is inserted into a jacket. Since the charge statically charged to the surface of the disk 13 can be discharged through the hub projected part 11 and the recessed part 12 because these hubs consist of metal, noises due to static electricity can be removed at the recording and reproducing by a magnetic recording head and errors at the high density magnetic recording can be reduced.
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Inventors:
KARIMOTO HIROYASU
Application Number:
JP1177883A
Publication Date:
August 09, 1984
Filing Date:
January 27, 1983
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G11B23/00; G11B23/03; G11B23/033; (IPC1-7): G11B5/82; G11B23/02
Attorney, Agent or Firm:
Toshio Nakao