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Title:
MAGNETIC RECORDING MEDIUM AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2005/031714
Kind Code:
A1
Abstract:
A low cost magnetic recording medium having low surface roughness and a process for producing the magnetic recording medium. A soft magnetic layer (16) has a multilayer structure comprising a first soft magnetic layer (26) on the substrate (12) side and a second soft magnetic layer (28) on the recording layer (20) side formed in layer. The second soft magnetic layer (28) is formed such that the surface roughness of the surface (28A) on the recording layer (20) side is lower than the surface roughness of the base surface (12A) of the substrate (12) and lower than the surface roughness of the surface (26A) which is on the recording layer (20) side of the first soft magnetic layer (26).

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Inventors:
HATTORI KAZUHIRO (JP)
TAKAI MITSURU (JP)
Application Number:
PCT/JP2004/013968
Publication Date:
April 07, 2005
Filing Date:
September 24, 2004
Export Citation:
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Assignee:
TDK CORP (JP)
HATTORI KAZUHIRO (JP)
TAKAI MITSURU (JP)
International Classes:
G11B5/667; G11B5/73; G11B5/851; G11B5/84; G11B5/855; (IPC1-7): G11B5/667; G11B5/738; G11B5/851; G11B5/84
Domestic Patent References:
WO2002054390A12002-07-11
Foreign References:
JP2004146033A2004-05-20
JP2004146032A2004-05-20
JP2004199725A2004-07-15
JPS6113431A1986-01-21
JPH0628661A1994-02-04
JPH09161258A1997-06-20
JPH09147344A1997-06-06
JPH11203654A1999-07-30
JP2002260219A2002-09-13
JP2003099912A2003-04-04
JPS6076026A1985-04-30
JPH05258272A1993-10-08
JP2003151128A2003-05-23
Attorney, Agent or Firm:
Matsuyama, Keisuke (10-12 Yoyogi 2-chom, Shibuya-ku Tokyo 53, JP)
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