发明名称 Magnetic recording medium
摘要 A magnetic recording medium comprising a substrate and a magnetic layer provided thereon, the magnetic layer containing: a binder, (a) an acicular ferromagnetic metal powder having an average major axis length of 0.05 to 0.14 mu m and a coercive force of 1700 to 2300 Oe or (c) a tabular hexagonal ferrite powder having a tabular diameter of 0.01 to 0.07 mu m and a coercive force of 1400 to 2200 Oe, and (b) a spherical or amorphous spinel ferrite powder having an average particle size of 0.005 to 0.09 mu m and a coercive force of more than 0 and less than 150 Oe, wherein the mixing ratio of the spinel ferrite powder (b) to the ferromagnetic metal powder (a) or the hexagonal ferrite powder (c), i.e., (b)/(a) or (b)/(c), is 0.03 to 0.3 by weight.
申请公布号 US5792570(A) 申请公布日期 1998.08.11
申请号 US19960743852 申请日期 1996.11.05
申请人 KAO CORPORATION 发明人 ISHIKAWA, AKIRA;NAKAYAMA, HIDEHIKO;YAMASHITA, KAZUTAKA
分类号 C09D5/23;G11B5/706;G11B5/714;G11B5/738;H01F1/047;(IPC1-7):G11B5/66 主分类号 C09D5/23
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