发明名称 Magnetic recording medium
摘要 A magnetic recording medium having two or more magnetic layers is disclosed, comprising a first magnetic layer and a second magnetic layer which-have been provided in this order on a surface of a nonmagnetic support, and which contain ferromagnetic particles and a binder, wherein said second magnetic layer (outermost layer) contains nonmagnetic particles having a pH of less than 7, and a Mohs' hardness of 6 or more, in an amount of from 1 to 20 parts by weight, per 100 parts by weight of the ferromagnetic particles in the second magnetic layer, and said first magnetic layer contains nonmagnetic particles having a pH of 7 or more, and a Mohs' hardness of 6 or more, in an amount of from 5 to 50 parts by weight, per 100 parts by weight of the ferromagnetic particles in the first magnetic layer.
申请公布号 US5510177(A) 申请公布日期 1996.04.23
申请号 US19920994522 申请日期 1992.12.21
申请人 FUJI PHOTO FILM CO., LTD. 发明人 MASUYAMA, KENICHI;KATO, KAZUO;ARAKI, HIROAKI
分类号 G11B5/702;C09D5/23;C09D127/04;C09D127/06;C09D175/06;G11B5/708;G11B5/716;G11B5/73;(IPC1-7):B32B5/16;G11B5/66 主分类号 G11B5/702
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