| 摘要 |
PURPOSE:To increase a film forming speed and to improve the production efficiency of a disk by using a heat-resistant film as a substrate for forming thin films such as magnetic film and protective film and forming the respective films thereon. CONSTITUTION:The magnetic film 2 is formed by vapor deposition, sputtering, etc. on the surface of the film 1 and the protective film 3 is adequately formed on the surface thereof, by which a magnetic film 4 is constituted. The film forming substrate is the film 1 in the stage of forming the films and therefore there are no troubles at all even if the temp. thereof is substantially increased in the stage of forming the films. The film forming speed is consequently surely increased. The film consisting of the alloys such as, for example, TbFeCo, GdCo, GdFe, TbFe, GdTbFe, GdFeBi, GdFeSn and GdTbSm are usable as the film 2 and the films consisting of, for example Si3N4, TiO2, SiO2, AlN and SiO are usable for the film 3. The magnetic film 4 constituted in the above- mentioned manner is installed on the surface of the disk 5 consisting of a light transmittable resin, for example, acrylic resin.
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