| 摘要 |
PURPOSE: To obtain a head which repels water and which has improved corrosion resistance by coating at least a part of the surface of a writing element or a reading element of the head surface with a substance having low surface energy. CONSTITUTION: A coating as a substitute for the substrate surface is formed so as to decrease the surface energy of the substrate surface, and the coating has moisture resistance and resistance against wetting. As for the material suitable for the thin film, FCOC(fluorinated carbon compds.) are used. As for an example of RCOC, a compd. containing perfluoroalkyl polyoxyethylene ethanol is selected. The FCOC is preferable because it can be formed into a thin film as a solid and a method for its formation by dipping and drawing up or by plasma CVD can be carried out.
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