MAGNETIC RECORDING MEDIUM,申请号JP19830041013-传众专利搜索

MAGNETIC RECORDING MEDIUM

申请公布号：JPS59167828(A)

申请号：JP19830041013

申请日期：1983.03.11

申请公布日期：1984.09.21

申请人：

HITACHI MAXELL KK

发明人：WAKAI KUNIO

分类号：G11B5/66;C09D101/18;C09D175/04;G11B5/64;G11B5/73;G11B5/735

主分类号：G11B5/66

摘要：PURPOSE:To prevent deterioration of a magnetic metallic film deposited by evaporation owing to the oxygen and moisture permeated therethrough from the rear of a base film by depositing a wear resistant polymer layer via a non- magnetic metallic film deposited by evaporation on the rear of the base film and forming successively the magnetic film and protective film on the base surface. CONSTITUTION:A non-magnetic metal, for example, Al is deposited by evaporation on one surface of a polyester film, etc. and if necessary, a layer formed by coating a soln. of a wear resistant polymer, for example, a polyurethane resin, etc. added with a lubricant, filler, etc. on the Al and drying the same is formed thereon. A magnetic metallic film deposited by evaporation is then formed on the other surface of perfluorophosphate or the like is formed thereon. Not only the deterioration by corrosion of the surface of the magnetic layer is prevented but also the deterioration by corrosion thereof owing to the O2 and moisture permeated therethrough from the rear of the polyester film is prevented by the non-magnetic metallic film, and the wear of the film is prevented by the polymer layer. The magnetic tape or the like having good durability is obtd.