Magnetic recording medium having a protective layer which includ

Details Magnetic recording medium having a protective layer which includ Magnetic recording medium having a protective layer which includ

1994-08-04

1996-08-06

Resan, Stevan A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428163, 428195, 428209, 428 654, 428 655, 428408, 428694TC, 428694TP, 428694TF, 428694TR, 428900, G11B 572

Patent

active

055432034

ABSTRACT:
The magnetic recording medium includes at least a substrate, a magnetic film formed on the substrate for storing data, a protective film and a lubricant film. The protective film has two regions of a predetermined pattern each having a different surface energy. The lubricant film including polar groups is formed on the protective film including the regions. The degree of adhesion of the lubricant film to the protective film is thus changed at the two regions each having a different surface energy so that the lubricant film can be prevented from being scattered.

REFERENCES:
patent: 4877677 (1989-10-01), Hirochi et al.
patent: 4935278 (1990-06-01), Krounbi et al.
patent: 4960609 (1990-10-01), Homola et al.
patent: 5110676 (1992-05-01), Murai et al.
patent: 5227211 (1993-07-01), Eltoukhy et al.
patent: 5331487 (1994-07-01), Gregory et al.
International Workshop on Microtribology, Oct. 12-13, 1992, pp. 192-199.

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