| 发明名称 | Magnetic recording medium and method of manufacturing the same | ||
| 摘要 | An aspect of the present invention relates to a magnetic recording medium, which comprises a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support, wherein the nonmagnetic layer has a thickness of equal to or less than 300 nm; a composite elastic modulus as measured on a surface of the magnetic layer ranges from 6.0 to 8.0 GPa; the magnetic layer comprises an abrasive with a specific surface area by BET method ranging from 14 m2/g to 40 m2/g; and a surface abrasive occupancy on a surface of the magnetic layer ranges from 0.2% to 2%. | ||
| 申请公布号 | US9401171(B2) | 申请公布日期 | 2016.07.26 |
| 申请号 | US201313838996 | 申请日期 | 2013.03.15 |
| 申请人 | FUJIFILM Corporation | 发明人 | Kasada Norihito;Sato Masahide;Watanabe Isamu |
| 分类号 | G11B5/706;G11B5/708;G11B5/842;G11B5/70 | 主分类号 | G11B5/706 |
| 代理机构 | Sughrue Mion, PLLC | 代理人 | Sughrue Mion, PLLC |
| 主权项 | 1. A magnetic recording medium, which comprises a nonmagnetic layer containing a nonmagnetic powder and a binder and a magnetic layer containing a ferromagnetic powder and a binder in this order on a nonmagnetic support, wherein the nonmagnetic layer has a thickness of equal to or less than 300 nm; a composite elastic modulus as measured on a surface of the magnetic layer ranges from 6.0 to 8.0 GPa; the magnetic layer comprises an abrasive with a specific surface area by BET method ranging from 14 m2/g to 40 m2/g; and a surface abrasive occupancy on a surface of the magnetic layer ranges from 0.2% to 0.9%. | ||
| 地址 | Tokyo JP | ||