MAGNETIC MEMORY MEDIUM AND ITS PRODUCTION

摘要

PURPOSE:To decrease the contact frictional force between a head and magnetic memory medium and to permit the repetitive use of said medium by providing monomolecular layers each consisting of an org. compd. contg. a specific material and lubricating layers each consisting of a polymer layer formed of a specific polymer on the surface of the magnetic memory medium. CONSTITUTION:Thin magnetic metallic film media 3 are coated on an alloy disk 1, the surfaces of which are coated with nonmagnetic alloy layer 2 having specular surfaces. Amorphous inorg. oxide layers 4 are coated thereon and further the monomolecular layers 5 consisting of the org. compd. contg. the material expressed by general formula I are formed on the amorphous inorg. oxide layers directly on after the surfaces of the amorphous inorg. oxide layers are treated in plasma. The polymer in which the structural unit expressed by formula II and the structural unit expressed by formula III are linearly irregularly arranged and the terminal group is expressed by formula IV and which has 500-30,000mol.wt. coated thereon or is baked after coating to provide the polymer layers 6 on the amorphous inorg. oxide layers 4. The contact friction between the head and the magnetic memory medium is thus decreased and the the repetitive use is permitted.