MAGNETIC RECORDING MEDIUM

摘要

PURPOSE:To provide a magnetically and chemically stable magnetic recording medium having high coercive force and low light transmissivity. CONSTITUTION:A substrate is coated with a resin compsn. contg. magnetic iron oxide particles made of spinel type composite particles obtd. by crystal growth of CoFe2O4 on the surfaces of Fe3O4 particles as nuclear crystal grains to obtain the objective magnetic recording medium.