| 摘要 |
PURPOSE:To obtain a magnetic recording medium with excellent scattering property in a binder, high S/N and suitable for high density recording by using flaky powder where the long axis and the short axis of ferromagnetic powder satisfy a prescribed relation. CONSTITUTION:A mean value T(nm<3>) to lots of ferromagnetic powder defined by a T1 expressed in Equation satisfies the relation of T<600X10<3>, where the long axis of the ferromagnetic powder is Lnm and the short axis is Wnm and the variation of the distribution of the long axis is <=0.4, and such powder is filtered out. The filtered magnetic powder is scattered uniformly in a synthetic resin binder so as to form a magnetic substance layer on the surface of support. Thus, the magnetic recording medium with excellent electromagnetic converting characteristic, high S/N and suitable for high density recording is obtained. |
