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: US11237973申请日: 2005-09-29
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公开(公告)号: US07515383B2公开(公告)日: 2009-04-07
- 发明人: Shinji Saito , Hitoshi Noguchi , Nobuo Yamazaki
- 申请人: Shinji Saito , Hitoshi Noguchi , Nobuo Yamazaki
- 申请人地址: JP Tokyo
- 专利权人: FUJIFILM Corporation
- 当前专利权人: FUJIFILM Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP2003-015601 20030124
- 主分类号: G11B5/02
- IPC分类号: G11B5/02 ; G11B5/48 ; G11B5/714
摘要:
Provided is a magnetic recording medium exhibiting good electromagnetic characteristics in high-density recording The magnetic recording medium employed for magnetically recording signals with a track width equal to or less than 2.0 μm and reproducing the magnetically recorded signals, wherein said magnetic recording medium comprises a magnetic layer comprising a hexagonal ferrite ferromagnetic powder and a binder or comprises a nonmagnetic layer comprise a nonmagnetic powder and a binder and a magnetic layer comprising a hexagonal ferrite ferromagnetic powder and a binder in this order on a nonmagnetic support. Said magnetic layer has a thickness equal to or less than 0.2 μm, and said hexagonal ferrite ferromagnetic powder has an average plate diameter being 1/30 or less of the magnetically recorded track width as well as ½ or less of the thickness of the magnetic layer.
公开/授权文献
- US20060024533A1 Magnetic recording medium 公开/授权日:2006-02-02
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