发明授权
- 专利标题: Magnetic tape and method of manufacturing the same, and magnetic recording device
- 专利标题(中): 磁带及其制造方法及磁记录装置
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申请号: US13427635申请日: 2012-03-22
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公开(公告)号: US08681451B2公开(公告)日: 2014-03-25
- 发明人: Takeshi Harasawa , Masahiko Mori
- 申请人: Takeshi Harasawa , Masahiko Mori
- 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: JP2011-067548 20110325
- 主分类号: G11B5/706
- IPC分类号: G11B5/706
摘要:
An aspect of the present invention relates to a magnetic tape comprising a magnetic layer containing a ferromagnetic powder and a binder on a nonmagnetic support, wherein the ferromagnetic powder is a hexagonal ferrite powder, squareness in a vertical direction without demagnetizing field correction of the magnetic layer ranges from 0.6 to 1.0, and the magnetic layer further comprises a compound in which a substituent selected from the group consisting of a carboxyl group and a hydroxyl group is directly substituted into a ring structure comprising a double bond and having a ClogP falling within a range of 2.3 to 5.5.
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