MAGNETAUFZEICHNUNGSMEDIUM

摘要

A magnetic recording medium is disclosed which comprises a non-magnetic support and a magnetic layer comprising a ferromagnetic powder having a specific surface area of not less than 55 m2/g and at least two kinds of resins each containing repetitive units having a polar group selected from the group consisting of a -SO3M group, a -OSO3M group, a -COOM group and a -PO(OM')2 group, wherein M is a hydrogen atom or an alkali metal atom, and M' is a hydrogen atom, an alkali metal atom or an alkyl group, and the glass transition points of said two resins are different not less than 60 DEG C. from each other. The recording medium is improved in the dispersibility of the ferromagnetic powder in the magnetic layer and has a satisfactory surface smoothness, high electromagnetic conversion characteristics and a satisfactory running durability.