Magnetic recording medium

摘要

A magnetic recording medium is formed from a non-magnetic support, and a magnetic layer formed on the support and including mainly a binder resin and a ferromagnetic metal powder including mainly Fe. The magnetic layer includes an abrasive and a lubricant. The abrasive present on the surface of the magnetic layer satisfies the relationship 0.01<=H15/H10<=0.3 where H10 denotes the number of particles per unit area having a height less than 10 nm (particles/mum2) and H5 denotes the number of particles per unit area having a height equal to or greater than 15 nm (particles/mum2). The magnetic recording medium has a surface lubricant index of 3 to 11. The height of the abrasive particles can be controlled by, for example, a blade treatment using an abrasive tape (LTBL system) or a diamond powder-studded rotating roll (DWBL system).