发明名称 |
Hexagonal system ferrite powder for a high density magnetic recording medium |
摘要 |
A magnetic powder is disclosed which is characterized by possessing a powder compression characteristic such that the magnetic powder, after being packed in a closed container, pressed at a load of 400 kgf/cm3, and relieved of the load, exhibits a packing density in the range of 2.5 to 3.5 g/cm3 and a geometric standard deviation of not more than 1.5 in the particle diameter distribution. A magnetic recording medium using the magnetic powder mentioned above has high packing and, consequently, secures high output, and has ample diminution of noise.
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申请公布号 |
US5766763(A) |
申请公布日期 |
1998.06.16 |
申请号 |
US19960701403 |
申请日期 |
1996.08.22 |
申请人 |
KABUSHIKI KAISHA TOSHIBA |
发明人 |
KURISU, SHUNJI;KUBO, OSAMU;MAEDA, TATSUMI;OGAWA, ETSUJI |
分类号 |
C01G49/00;G11B5/706;G11B5/84;H01F1/11;H01F1/113;(IPC1-7):G11B5/66;G11B5/70 |
主分类号 |
C01G49/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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