发明申请
- 专利标题： MAGNETIC RECORDING MEDIUM
- 专利标题（中）： 磁记录介质
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申请号： US11782387申请日： 2007-07-24
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公开(公告)号： US20080026256A1公开(公告)日： 2008-01-31
- 发明人: Atsushi Kato
- 申请人： Atsushi Kato
- 申请人地址： JP Tokyo
- 专利权人： SONY CORPORATION
- 当前专利权人： SONY CORPORATION
- 当前专利权人地址： JP Tokyo
- 优先权： JPP2006-201765 20060725
- 主分类号： G11B5/66
- IPC分类号： G11B5/66
摘要：
A magnetic recording medium is provided. The magnetic recording medium includes a nonmagnetic support, a lower nonmagnetic layer in which a nonmagnetic powder is dispersed in a binder and which is provided on the nonmagnetic support, and a magnetic layer in which a magnetic powder is dispersed in a binder and which is provided on the lower nonmagnetic layer. The nonmagnetic support is made of a polyethylene terephthalate having a glass transition temperature of 125° C. or higher. The ratio of the thickness of the nonmagnetic support to the total thickness of the magnetic recording medium is in the range of 70% to 85%.