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: US272278申请日: 1994-07-08
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公开(公告)号: US5545462A公开(公告)日: 1996-08-13
- 发明人: Narito Goto , Masanori Isshiki , Kunitsuna Sasaki , Nobuyuki Sekiguchi , Katsuyuki Takeda , Hideki Takahashi
- 申请人: Narito Goto , Masanori Isshiki , Kunitsuna Sasaki , Nobuyuki Sekiguchi , Katsuyuki Takeda , Hideki Takahashi
- 申请人地址: JPX JPX
- 专利权人: Konica Corporation,Kabushiki Kaisha Toshiba
- 当前专利权人: Konica Corporation,Kabushiki Kaisha Toshiba
- 当前专利权人地址: JPX JPX
- 优先权: JPX2-401516 19901212
- 主分类号: B32B7/02
- IPC分类号: B32B7/02 ; B32B7/12 ; B32B27/04 ; B32B27/18 ; B32B33/00 ; C09D5/23 ; C09D127/04 ; C09D127/06 ; C09D175/00 ; C09D175/06 ; G11B5/706 ; G11B5/716 ; G11B5/73 ; B32B3/10 ; B32B5/16 ; G11B5/66
摘要:
Disclosed is a magnetic recording medium characterized in that plural magnetic layers are provided on a non-magnetic support, the uppermost layer of the magnetic layers contains a ferromagnetic metallic powder and/or a hexagonal system magnetic powder and a binder, at least one layer other than the uppermost layer contains Co-containing iron oxide and a binder, the film thickness of the uppermost layer is 0.5 .mu.m or less, and the surface of the uppermost layer of the magnetic layers has an R.sub.10z value of the magnetic layer defined below of 50 nm or less, by which electromagnetic conversion characteristics of a magnetic recording medium can be improved.
公开/授权文献
- US4352712A Apparatus for applying gasket-forming material to workpieces 公开/授权日:1982-10-05
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