Patent ID: 6506486
Filing Date: 2003-01-14
Classification: G11B,Y10T

Abstract:
A magnetic recording medium comprising a nonmagnetic support having thereon, a magnetic layer containing a ferromagnetic metal powder, a fatty acid, a fatty acid ester having a melting point that is equal to or less than 15Â° C. and a binder, wherein said ferromagnetic metal powder comprises Fe and 5 to 15% by atom of Al, 1 to 25% by atom of Co, 0.5 to 5% by atom of Y, 0 to 0.1% by atom of Si and 0% 0.1% by atom of Nd, based on Fe, water-soluble Na in an amount ranging from 0 to 10 ppm and water-soluble Ca in an amount ranging from 0 to 10 ppm, per 1 g of said ferromagnetic metal powder, and wherein said fatty acid ester is a fatty acid alkyl ester having an acid-hydrolytic speed equal to or less than 0.03/hour.