Magnetic recording medium

摘要

A magnetic recording medium comprising a non-magnetic support having a substantially non-magnetic undercoating layer on the non-magnetic support and a magnetic layer comprising a ferromagnetic hexagonal ferrite fine powder dispersed in a binder on the undercoating layer in this order, wherein the squareness ratio of the magnetic layer in the perpendicular direction is at least 0.4, the coercive force of the magnetic layer in the perpendicular direction is at least 1,500 Oe, and between the bit minimum inversion interval Y mu m and the maximum inversion interval Z mu m of the digital signal to be recorded and the thickness X mu m of the magnetic layer, there are the relations; X