Magnetic recording medium lubricated with a cholesteric liquid c

Details Magnetic recording medium lubricated with a cholesteric liquid c Magnetic recording medium lubricated with a cholesteric liquid c

1989-02-08

1991-06-25

Hess, Bruce H.

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

428694, 428695, 428900, 25229901, 2522995, 252 52R, G11B 2300

Patent

active

050265776

ABSTRACT:
A recording medium comprising a substrate, a memory layer supported by the substrate, and a liquid crystal lubricant overlying the recording medium. The recording medium preferably has a wear layer over the memory layer. The liquid crystal lubricant comprises a cholesteric liquid crystal and cholestryl oleyl carbonate is particularly preferred. The lubricant may be applied to the recording medium by dipping in a dilute solution containing a volatile solvent and then evaporating the solvent, leaving a thin lubricant film over the wear layer.

REFERENCES:
patent: 3657928 (1972-04-01), Melamed
patent: 3778308 (1973-12-01), Roller et al.
patent: 4303738 (1981-12-01), Gini et al.
patent: 4833031 (1987-05-01), Kurokawa et al.
Gribailo, A. P. et al., Khim. Tekhnol. Topl. Masel (7) 18-20, 1983, CA99(14):107765z.

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