MAGNETIC RECORDING MEDIUM

摘要

PURPOSE:To improve durability by contg. two kinds of specific lubricants in a magnetic layer. CONSTITUTION:Perfluoroalkyl polyether carboxylic acid (having the structure wherein carboxylic groups are incorporated into the molecules of conventional perfluoroalkyl polyether) and fatty acid ester (ester of higher fatty acid of 12- 18 carbon number and lower alcohol of 2-6 carbon number, etc.) are coated or sprayed on a magnetic layer or the magnetic layer is immersed in the soln. of these lubricants, whereby said lubricants are incorporated in the magnetic layer.