Patent ID: 6030695
Filing Date: 2000-02-29
Classification: G11B,Y10S,Y10T

Abstract:
A magnetic recording medium comprising (i) a nonmagnetic support, (ii) a nonmagnetic primer layer containing a nonmagnetic powder having an average particle size of 0.01 to 0.8 .mu.m formed on said nonmagnetic support, and (iii) an upper magnetic layer formed on said nonmagnetic primer layer, wherein said nonmagnetic primer layer and said upper magnetic layer comprise, as a binder, a polyurethane resin and a polyvinyl chloride resin, and the weight ratio of the polyurethane resin to the polyvinyl chloride resin in said nonmagnetic primer layer is from 70:30 to 90:10, and the weight ratio of the polyurethane resin to the polyvinyl chloride resin in said upper magnetic layer is from 20:80 to 40:60.