| 摘要 |
PROBLEM TO BE SOLVED: To provide a coating type magnetic recording medium which can realize a high-density recording. SOLUTION: This magnetic recording medium is produced by forming a base layer on a supporting body and forming an upper magnetic layer comprising a ferromagnetic powder and a nonmagnetic powder dispersed in a binder on the base layer. In this medium, the thickness of the upper magnetic layer is <=0.2μm, and the product of the residual magnetic flux density of the upper magnetic layer and the thickness of the upper magnetic layer is 0.005 to 0.045 Tμm. The coercive force of the upper magnetic layer is 170 to 280 kA/m. The ferromagnetic powder has 0.01 to 0.12μm average particle size. As for the nonmagnetic powder, a powder having an average particle size of >=1/10 of the thickness of the upper magnetic layer and <=0.1μm is used.
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