发明名称 |
Magnetic recording medium |
摘要 |
A magnetic recording medium having a magnetic coating containing therein ferromagnetic metal powder provided on a base film, wherein the magnetic recording medium being characterized in that the surface roughness of the magnetic coating, i.e., the surface roughness Rrms (a unit of measurement of mu m) with respect to a waveform having a wavelength P in a range of from 3 to 50 mu m out of groups of waveforms constituting the cross-sectional waveform of the surface of the magentic coating, satisfies the following equation: Rrms</=7.5x10-4P+7.5x10-3 where 3</=P</=50 mu m.
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申请公布号 |
US4663246(A) |
申请公布日期 |
1987.05.05 |
申请号 |
US19840617535 |
申请日期 |
1984.06.05 |
申请人 |
TDK CORPORATION |
发明人 |
TOKUOKA, YASUMICHI;YAMAKAWA, YOSHISUKE;WATANABE, AKIO |
分类号 |
C09D5/23;C09D7/12;G11B5/70;G11B5/73;G11B5/735;G11B5/84;G11B5/842;(IPC1-7):G11B5/72;B32B3/00 |
主分类号 |
C09D5/23 |
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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