Magneto optical disc

Details Magneto optical disc Magneto optical disc

1992-08-27

1994-01-18

Ryan, Patrick J.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428327, 428421, 428422, 428694NF, 428694TF, 428694BF, 369283, B32B 302

Patent

active

052798771

ABSTRACT:
A protective coating made of resin, preferably a radiation curable resin containing fluoroplastic fine particles having a low surface energy is provided in the form of the uppermost layer facing a magnetic head, thereby improving the frictional properties and durability of a magneto-optical disc that is used with a magnetic field modulation system in which the magnetic head comes in constant contact therewith.

REFERENCES:
patent: 4578299 (1986-03-01), Kato et al.
patent: 4696845 (1987-09-01), Yanagisawa
patent: 4721640 (1988-01-01), Kato et al.
patent: 4985289 (1991-01-01), Kamezaki et al.
patent: 5063119 (1991-11-01), Ishida et al.
patent: 5069967 (1991-12-01), Yokoyama et al.
patent: 5091249 (1992-02-01), Nishikawa et al.
patent: 5161150 (1992-11-01), Namba et al.
patent: 5176943 (1993-01-01), Woo

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