Patent ID: 6030689
Filing Date: 2000-02-29
Classification: G11B,Y10S,Y10T

Abstract:
A magnetic recording medium comprising a nonmagnetic support having thereon at least two coating layers which comprise:a lower coating layer mainly comprising (1) at least one particles selected from nonmagnetic particles or soft magnetic particles and (2) a binder, formed on the support, anda magnetic layer comprising ferromagnetic particles dispersed in a binder, formed on the lower coating layer,wherein at least said lower coating layer contains a polyurethane resin having a cyclic structure and containing an ether group, and said nonmagnetic particles or soft magnetic particles contained in said lower coating layer have an average long axis length of from 0.04 to 0.20 .mu.m and an acicular ratio (long axis/short axis) of from 2 to 10.