Patent ID: 6037037
Filing Date: 2000-03-14
Classification: G11B,Y10S,Y10T

Abstract:
A magnetic recording medium comprising:a non-magnetic film;a non-magnetic layer, a surface of the non-magnetic film being coated with the non-magnetic layer; anda magnetic layer having a thickness of 0.51 .mu.m or less when dried, the non-magnetic layer being coated with the magnetic layer,wherein the non-magnetic layer comprises:a non-magnetic needle body having an average major axis length of 0.25 to 1.0 .mu.m and an average minor axis length of 0.005 to 0.015 .mu.m;a first binding resin having a glass transition temperature (Tg.sub.1) of 30 to 50.degree. C., the content of the first binding resin being 15 to 30 wt % with respect to the non-magnetic needle body; andfatty acid ester, the content of the fatty acid ester being 2 to 15 wt % with respect to the first binding resin,the magnetic layer comprises ferromagnetic powder and a second binding resin having a glass transition temperature (Tg.sub.2) of 40 to 70.degree. C., andthe glass transition temperature (Tg.sub.1) of the first binding resin is at least 5.degree. C. lower than the glass transition temperature (Tg.sub.2) of the second binding resin, and the entire thickness of the layers and the film is 12 .mu.m or less.