发明名称 |
Magnetic recording medium. |
摘要 |
The present invention provides a magnetic recording medium comprising a nonmagnetic layer mainly having an inorganic nonmagnetic particle dispersed in a binder provided on a nonmagnetic flexible support and a magnetic layer having a ferromagnetic particle dispersed in a binder, characterized in that the magnetic layer comprises a hexagonal ferrite magnetic material and exhibits a thickness of 1 mu m or less, or 2.5 mu m or less in total if there are a plurality of magnetic layers, a central line average surface roughness of 0.006 mu m or less, SFD of 0.3 or less in the longitudinal direction on the plane and Br/Hc of less than 1.5, whereby the short wavelength recording can be remarkably improved in electro-magnetic conversion characteristics, particularly 7 MHz output. |
申请公布号 |
EP0606904(A1) |
申请公布日期 |
1994.07.20 |
申请号 |
EP19940100389 |
申请日期 |
1994.01.12 |
申请人 |
FUJI PHOTO FILM CO., LTD. |
发明人 |
SAITO, SHINJI;YAMAZAKI, NOBUO |
分类号 |
G11B5/70;C09D5/23;C09D7/12;G11B5/706;G11B5/716;G11B5/738;G11B5/848;G11B5/852 |
主分类号 |
G11B5/70 |
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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