Magnetic recording medium with an intermediate protective layer

Details Magnetic recording medium with an intermediate protective layer Magnetic recording medium with an intermediate protective layer

1991-02-20

1991-10-08

Cashion, Jr., Merrell C.

Stock material or miscellaneous articles

Composite

Of silicon containing

428694, 428695, 428900, G11B 2300

Patent

active

050553593

ABSTRACT:
In a magnetic recording medium having a layer of a perfluoroalkylpolyether-based liquid lubricant as an uppermost layer, the liquid lubricant has an atomic group including an aromatic ring at a terminal end of a perfluoropolyether main chain, and is coated on an inorganic oxide. Therefore, adhesion force of the lubricant is greatly improved, and interaction within the lubricant can be decreased, thus realizing a magnetic recording medium having excellent lubricity and wear resistance.

REFERENCES:
patent: 4721795 (1988-01-01), Caporiccio et al.
patent: 4729924 (1988-03-01), Skorjauec et al.
patent: 4757145 (1988-07-01), Caporiccio et al.
patent: 4808472 (1989-02-01), Caporiccio et al.
patent: 4889939 (1989-12-01), Caporiccio et al.
A. M. Scarati and G. Caporiccio: "Frictional Behaviour and Wear Resistance of Rigid Disks Lubricated with Neutal and Functional Perfluoropolyethers"; IEEE Transactions on Magnetics, vol. MAG-23, No. 1, Jan. 1987.
Y. Kimachi, F. Yoshimura, M. Hoshino and A. Terada: "Uniformity Quantification of Lubricant Layer on Magnetic Recording Media"; IEEE Transactions on Magnetics, vol. MAG-23, No. 5, Sep. 1987.
H. Hoshino, F. Yoshimura, Y. Kimachi, and Terada: "Lubrication Layer Using Aminosilane Coupling Reagent for Rigid Disk Media"; Summary of Science Lecture at Japanese Applied Magnetic Society of Eleventh, 1 p A-6 (1987.11) p. 14.
Dr. Gerardo Caporiccio: "A New Series of Lubricants for Magnetic Recording Media from Bifunctional Perfluoropolyether Derivatives"; Lecture at Symposium on Memory and Advanced Recording Technologies; S. Jose, Calif., 5-8 May 1986.
T. Miyamoto, Y. Andou and I. Sato: "Influence of Fluorocarbon Liquid Lubricant Upon Friction and Abrasion of Magnetic Disk"; Preliminary Draft at Thirtyssecondth National Constituency of Japanese Lubricant Society (Osaka) 481-484 page.

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