Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Patent
1994-03-18
1999-11-16
Kiliman, Leszek
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
428 654, 428 658, 428695, 428694TP, 428694TF, 428694BP, 428694BF, 428704, 428421, 428900, 360 86, 360128, 360135, G11B 566
Patent
active
059854030
ABSTRACT:
A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer and a protective layer which are formed on the non-magnetic substrate in that order, wherein a substance(s) as a single component or a plurality of components, which constitute a liquid continuously supplied to the surface of said protective layer, are adsorbed on or react with the surface of said protective layer to form a lubricating film having low frictional properties and low wearing-out properties. The present invention can realize negligible friction and wear resistance even in severe sliding at a very slightly kept-off or completely contacted state by continuous supply of a liquid lubricant prepared by adding a fluoro compound and an extreme pressure agent or an oiliness agent to a solvent to the surface of a disc, and can provide a magnetic recording reproducer having excellent sliding-resistant characteristics.
REFERENCES:
patent: 2969435 (1961-01-01), Lynott
patent: 3579212 (1971-05-01), Gabor
patent: 4120995 (1978-10-01), Phipps
patent: 4430239 (1984-02-01), Wyman
patent: 5061562 (1991-10-01), Yamanaka
patent: 5219651 (1993-06-01), Shoji et al.
Database, WPI, Derwent Publ. Ltd. London, GB; & JP 1-1 290 117 Hitachi KK Nov. 22, 1989-Abstract Only.
Arai Juichi
Imazeki Shuji
Ito Yutaka
Morooka Hisashi
Murakami Yuko
Hitachi , Ltd.
Kiliman Leszek
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