MAGNETIC RECORDING MEDIUM

摘要

PURPOSE:To obtain the magnetic recording medium having a high recording density and excellent traveling durability by specifying the content of a lubricant with respect to ferromagnetic metal powder in a magnetic layer by the specific surface area of the ferromagnetic metal powder. CONSTITUTION:The magnetic layer essentially consisting of the ferromagnetic metal powder and a binder resin is provided on a nonmagnetic base. The content Y(weight %) of the lubricant with respect to the ferromagnetic powder in the magnetic layer is specified to a 0.055S+5.5<=Y<=-0.2S+24 range when the specific surface area S of the ferromagnetic powder is >=30(m<2>/gr) and <50(m<2>/gr). The content gamma is specified to a 0.06S+4.7<=Y<=-0.13S+21 range when the specific surface area S is >=50(m<2>/gr) and <=65(m<2>/gr). The high-density recording is attained and traveling durability is improved in this way.