Title:
MAGNETIC RECORDING MEDIUM, METHOD FOR PRODUCTION THEREOF AND MAGNETIC RECORDING AND REPRODUCING DEVICE USING THE MEDIUM
Document Type and Number:
WIPO Patent Application WO2005120176
Kind Code:
A3
Abstract:
A magnetic recording medium includes at least a soft under layer, a perpendicular magnetic recording film and a protective film that are stacked on a nonmagnetic substrate. The nonmagnetic substrate is a disk of silicon having a diameter of 48 mm or less. A method for the production of the magnetic recording medium includes exerting a bias onto the silicon substrate when forming the protective film. A magnetic recording medium can be produced using the method. A magnetic recording and reproducing device can be produced using the magnetic recording medium and a magnetic head for recording and reproducing information in the magnetic recording medium. The magnetic head is a magnetic monopole head.
Inventors:
SHIMIZU KENJI (JP)
Application Number:
PCT/JP2005/010744
Publication Date:
May 11, 2006
Filing Date:
June 07, 2005
Export Citation:
Assignee:
SHOWA DENKO KK (JP)
SHIMIZU KENJI (JP)
SHIMIZU KENJI (JP)
International Classes:
G11B5/73; G11B5/64; G11B5/65; G11B5/667; G11B5/72; G11B5/84
Foreign References:
| US20040038082A1 | 2004-02-26 | |||
| JP2004134041A | 2004-04-30 | |||
| US5671197A | 1997-09-23 | |||
| JP2002334555A | 2002-11-22 |
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