| 摘要 |
PURPOSE:To improve the abrasion resistance of a magnetic recording medium, by forming an org. protecting film by sputtering on the surface of a magnetic deposited thin film. CONSTITUTION:About 300Angstrom cobalt metallic film is vapor-deposited on a substrate having 25mu thickness and a magnetic recording medium 1 is fixed to a cathode 2, and this film is disposed in a chamber 5 and is evacuated from an evacuating hole 8 by a vacuum pump to make the inside of a vessel vacuous, and first, gaseous argon is introduced into the vessel from an introducing hole of gaseous atmosphere 7. Then, voltage is applied between the cathode 2 and an anode 4 and an org. protecting material 3 is sputtered by glow discharging to stick an org. protecting film to the magnetic recording medium 1. Aliphatic polyamide, epoxy and polyimide are used as the org. protecting material. |
