Patent ID: 6472063
Filing Date: 2002-10-29
Classification: G11B,Y10S,Y10T

Abstract:
A magnetic recording medium comprising at least a lower non-magnetic layer containing at least a non-magnetic powder and a binder resin formed on a non-magnetic support and an upper magnetic layer formed on the lower non-magnetic layer, wherein the magnetic recording medium is used for a recording-reproducing system in which recorded signals are reproduced by an MR head, and the upper magnetic layer contains at least two kinds of binder resins and a mean glass transition temperature Tg calculated from each Tg of the at least two kinds of binder resins is 40Â° C. to 80Â° C., and a plastic deformation hardness Hv from the upper magnetic layer surface to an indentation depth of 0.1 &mgr;m is 100 to 200 mgf/&mgr;m2 and a Young's modulus E in a thickness direction from the upper magnetic layer surface to the indentation depth of 0.1 &mgr;m is 2,000 to 3,000 mgf/&mgr;m2.