| 摘要 |
PURPOSE:To improve recording and reproducing characteristics, corrosion resistance and durability by using a protective layer which contains mixed monomolecular film of a fluorine-contg. org. compd. and org. compd. without contg. fluorine or the cumulative film thereof. CONSTITUTION:A magnetic material layer and the org. protective layer are provided on a substrate. The mixed monomolecular film of the fluorine-contg. org. compd. and the org. compd. without contg. fluorine or the cumulative film thereof is incorporated into the protective layer. Fe, alloy essentially consisting of Co-Ni or the oxide, nitride thereof, etc., are usable for the material of the magnetic material layer 2; the Co-Cr alloy which has a high-density recording characteristic and excellent corrosion resistance or the ferromagnetic film essentially consisting of the Co-Cr alloy is more preferable. The high formation temp. of the Co-Cr alloy film is preferable to improve the coercive force of the Co-Cr alloy film which is the magnetic layer. A polyamide, polyimide resin and more particularly arom. polyimide resin having heat resistance are preferred for the high-polymer substrate. The recording medium having the excellent runnability, durability and environmental resistance is thus obtd.
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