| 摘要 |
PURPOSE:To obtain a magnetic recording having good color S/N and reproduced output by incorporating a small amt. of hexagonal ferrite magnetic powder into a large amt. of needle-like ferromagnetic powder mixture. CONSTITUTION:The magnetic recording medium which contains the magnetic powder having >=70emu/g satd. magnetization and the hexagonal ferrite mag netic powder having the axis of easy magnetization in the c-axis direction and having >=600 oersted coercive force, >=5 planar ratio and 0.2-0.5mum particle size in the magnetic layer and in which the hexagonal ferrite magnetic powder is incorporated at 4h5pts.wt. by 100pts.wt. the magnetic powder is formed. The vertically magnetizable component of the hexagonal ferrite magnetic pow der is effectively utilized, by which the reproduced output in a high-frequency region is improved and the recording medium is made adaptable to high-density recording. The horizontally magnetizable component of the needle-like ferromag netic powder is effectively utilized, by which the reproduced output in a low-fre quency region is improved.
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