| 摘要 |
PURPOSE:To obtain a surface lubricating film nonsticking to a magnetic head and to enhance durability, by applying a solid surface lubricant in a heat melted state without using a solvent dilution method and thinning the coated film. CONSTITUTION:A magnetic disc is obtained by forming magnetic thin films 2 on both sides of a circular aluminum substrate 1 by a spin coating method or vapor deposition method or the like, and the lubricting film 4 is formed by coating the disc with a surface lubricant is a heat melted state. As the solid lubricant, higher aliphatic acid, its metal salt, aliphatic ester, etc. having >=45 deg. melting point are used. For example, the film 4 is formed by forming a gamma-Fe2O3 magnetic film on the substrate 1 by the sputtering method, heating the obtained sputter disc surface to 130-140 deg.C, and coating the surface with behenic acid heated to 110-120 deg.C, heating the surface of the medium to 110-120 deg.C, and wiping the surface with a roll of paper. |
