发明名称 Magnetic recording medium
摘要 Provided is a particulate magnetic recording medium having excellent electromagnetic characteristics, especially, a particulate magnetic recording medium which achieves a high output and a low noise and which is suitable for reproduction with an MR head.A magnetic recording medium comprising a flexible nonmagnetic support having thereon, in order, a nonmagnetic layer containing a nonmagnetic powder and a binder and at least two magnetic layers including an uppermost magnetic layer and a lowermost magnetic layer, each containing a ferromagnetic powder and a binder, wherein said at least two magnetic layers have a total thickness of from 0.02 mum to 0.5 mum and an average particle volume V(u) and a saturation magnetization sigmas(u) of a ferromagnetic powder in said uppermost magnetic layer are, respectively, higher than an average particle volume V(L) and a saturation magnetization sigmas(L) of a ferromagnetic powder in said lowermost magnetic layer.
申请公布号 US6482506(B1) 申请公布日期 2002.11.19
申请号 US20000648823 申请日期 2000.08.25
申请人 FUJI PHOTO FILM CO., LTD. 发明人 EJIRI KIYOMI;MORI MASAHIKO
分类号 G11B5/706;G11B5/716;(IPC1-7):G11B5/716 主分类号 G11B5/706
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