Patent ID: 6663939
Filing Date: 2003-12-16
Classification: G11B,Y10T

Abstract:
A magnetic recording medium for use in reproduction with an MR head, comprising: a non-magnetic substrate; a non-magnetic layer including a binder resin, in which a non-magnetic powder is dispersed, on the non-magnetic substrate; and a magnetic layer on the non-magnetic layer, wherein the magnetic layer has a thickness of at most 0.15 &mgr;m and is obtained by applying a magnetic coating material on the applied, dried and cured non-magnetic layer, the magnetic layer includes a metal magnetic powder with a mean major axis length of from 0.03 to 0.07 &mgr;m, and a saturation magnetization &sgr;s of from 100 to 125 Am2/kg, an X-ray crystal particle size Dx of from 50 to 150 Ã¥and the center line mean roughness Ra of the magnetic layer surface is 5 nm or less.