Patent ID: 6790511
Filing Date: 2004-09-14
Classification: G11B,Y10T

Abstract:
A magnetic recording medium comprising a support having thereon a substantially nonmagnetic lower layer and a magnetic layer containing a ferromagnetic hexagonal ferrite powder dispersed in a binder provided in this order, wherein the average tabular diameter of the ferromagnetic hexagonal ferrite powder is from 10 to 40 nm, the friction coefficient of the magnetic layer against an SUS420J pole and a polyoxymethylene (POM) pole is from 0.15 to 0.50, the support has on the surface protrusions having a height of 0.1 to 0.5 &mgr;m in a number of from 0.01 to 0.5/mm2 and the magnetic recording medium is a magnetic recording medium for reproduction with a magneto-resistance type magnetic head.