G - Physics – 11 – B
Patent
G - Physics
11
B
G11B 11/10 (2006.01) G11B 11/105 (2006.01) G11B 13/04 (2006.01)
Patent
CA 2046178
A magneto-optical disk comprises a substrate, a recording layer formed on the substrate, and a solid-lubricant film, whereon slides a flying-type magnetic head used for recording and/or reproducing. The solid-lubricant film is formed on the recording layer, and is made of polyolefin containing a perfluoroalkyl group, or of glassy carbon. Adhesion of the flying-type magnetic head to the surface of the magneto-optical disk and scattering of the lubricant occur less easily because of the solid-lubricant film. The solid-lubricant film is formed by sputtering target material with argon ions, the target material being achieved by kneading polytetrafluoroethylene powder with perfluoropolyether. An external magnetic field of substantially constant intensity can be applied on the recording layer because the solid-lubricant film is substantially uniform in thickness.
Katayama Hiroyuki
Nakayama Junichiro
Ohta Kenji
G. Ronald Bell & Associates
Sharp Kabushiki Kaisha
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