Patent ID: 6333900
Filing Date: 2001-12-25
Classification: G11B,Y10S,Y10T

Abstract:
An optical head comprising a solid immersion lens installed in a floating type slider, for performing recording or reproduction on an optical recording medium, wherein:a solid protective layer having a self-lubricating property is formed at least on a surface of the floating type slider opposing to the optical recording medium,the solid protective layer has a carboxyl group on its surface, and a composition ratio (O/C) of oxygen/carbon is not less than 0.1,a lubricating layer is further formed on the solid protective layer having the self-lubricating property, andthe lubricating layer comprises a perfluoropolyether having a molecular weight of 1000 to 8000 and having, at least at one of its molecular terminals, a group selected from at least one of a hydroxyl group, carboxyl group, ester group, amino group and piperonyl group.