| abstract |
A magnetic recording medium for high-density recording, which comprises a non-magnetic substrate and a magnetic layer provided on the non-magnetic substrate and containing, as main constituents, ferromagnetic grains and a binder, wherein the non-magnetic substrate surface on the side adjoining the magnetic layer has a surface roughness higher than that of the back surface of the non-magnetic substrate. The substrate surface adjoining the magnetic layer has a surface roughness of 0.007 mu or more, while the back surface has a surface roughness of 0.02 mu or less, but in each particular application the roughness of the surface adjoining the magnetic layer is selected to be higher than that of the back surface. |