Magnetic recording medium having a perfluoropolyether lubricant

Details Magnetic recording medium having a perfluoropolyether lubricant Magnetic recording medium having a perfluoropolyether lubricant

1994-08-24

1999-01-12

Resan, Stevan A.

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

428421, 428422, 428694TC, 428694TF, 428900, G11B 571

Patent

active

058585362

ABSTRACT:
A magnetic storage medium includes a substrate, a protective film, and a lubricant film. The substrate includes a magnetic body. The protective film is formed on the substrate and constituted by a carbon thin film having dangling bonds formed on a surface thereof. The lubricant film is coated on the protective film and bonded to some of the dangling bonds. An adsorption site ratio (density of dangling bonds/density of functional groups of lubricant film) which is a ratio of the density of the dangling bonds to the density of functional groups of the lubricant film exceeds 1.

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patent: 5331487 (1994-07-01), Gregory et al.
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