Surface modified magnetic particle powder for magnetic recording medium, surface modified filler material for magnetic recording medium, surface modified nonmagnetic particle powder for nonmagnetic underlayer of magnetic recording medium, and magnetic recording medium

摘要

A magnetic recording medium comprising: a non-magnetic base film; and a magnetic recording layer which is provided on the non-magnetic base film and which contains a filler, a binder resin and surface-modified magnetic particles having an average particle diameter of from 0.01 to 0.7 mu m and comprising magnetic particles and an organosilane compound, obtainable from a silane monomer, coated on surface of the magnetic particles by means of a dry-mixing method.