发明授权
- 专利标题: Magnetic recording medium
- 专利标题(中): 磁记录介质
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申请号: US09861642申请日: 2001-05-22
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公开(公告)号: US06605335B2公开(公告)日: 2003-08-12
- 发明人: Hiroshi Tani , Hiroyuki Matsumoto , Mitsuhiro Shyoda , Tomonori Kozaki , Takayuki Nakakawaji , Yoko Ogawa
- 申请人: Hiroshi Tani , Hiroyuki Matsumoto , Mitsuhiro Shyoda , Tomonori Kozaki , Takayuki Nakakawaji , Yoko Ogawa
- 优先权: JP2000-154395 20000522
- 主分类号: G11B572
- IPC分类号: G11B572
摘要:
The present invention provides a magnetic recording media made possible to improve reliability and durability of the magnetic recording media with an extremely thin overcoat. A magnetic recording media made by forming at least a magnetic coat and an overcoat on a substrate of non-magnetic magnetic disk on which surface a liquid lubricant having a structure of perfluoropolyether is coated, wherein average roughness of overcoat surface Ra is less than 0.8 nm, said overcoat being a diamond-like-carbon with a thickness in a range of 1.5-4.5 nm, and said lubricant on said carbon overcoat containing a lubricant component having a structure represented by chemical formula (1): (where, p=5-36, q=4-30, x=1-5).
公开/授权文献
- US20020006531A1 Magnetic recording medium 公开/授权日:2002-01-17
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