发明授权
- 专利标题: Magnetic recording medium and method of manufacturing the same
- 专利标题(中): 磁记录介质及其制造方法
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申请号: US12239937申请日: 2008-09-29
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公开(公告)号: US07960045B2公开(公告)日: 2011-06-14
- 发明人: Katsuhiko Meguro , Masatoshi Takahashi
- 申请人: Katsuhiko Meguro , Masatoshi Takahashi
- 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: JP2007-256665 20070928
- 主分类号: G11B5/62
- IPC分类号: G11B5/62 ; B05D5/12 ; C08F2/46
摘要:
An aspect of the present invention relates to a magnetic recording medium comprising a coating layer on a nonmagnetic support, wherein the coating layer comprises a nonmagnetic layer comprising a nonmagnetic powder and a binder and a magnetic layer comprising a ferromagnetic powder and a binder in this order, the nonmagnetic support comprises a main component in the form of a resin obtained by mixing and/or copolymerizing a polyester and a polymer having compatibility with the polyester, has a glass transition temperature of equal to or higher than 80° C. but less than 125° C., and has a heat absorption peak, based on enthalpy relaxation, ranging from 0.5 to 2.0 J/g. Another aspect of the present invention relates to a method of manufacturing a magnetic recording medium.
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