Magnetic recording medium, a method of manufacturing the...

Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of substrate or post-treatment of coated substrate

Reexamination Certificate

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Details

C427S539000, C427S558000, C427S129000, C427S131000

Reexamination Certificate

active

06946166

ABSTRACT:
A magnetic recording medium according to the invention includes a nonmagnetic substrate made of a polymer resin, the nonmagnetic substrate having been treated to improve an adhesion characteristic thereof; an adhesive layer on the nonmagnetic substrate, a nonmagnetic undercoating layer on the an adhesive layer; a magnetic layer above the nonmagnetic undercoating layer; a protection layer above the magnetic layer; and a liquid lubricant layer on the protection layer. A method of manufacturing the magnetic recording medium described above includes the steps of: treating a nonmagnetic substrate to improve an adhesion characteristic thereof; forming an adhesive layer on the nonmagnetic substrate, the adhesion thereof having been improved; forming a nonmagnetic undercoating layer on the adhesive layer; forming a magnetic layer above the nonmagnetic undercoating layer; forming a protection layer above the magnetic layer; and forming a liquid lubricant layer on the protection layer. A magnetic storage device according to the invention mounts thereon the magnetic recording medium described above.

REFERENCES:
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patent: 6139936 (2000-10-01), Weiss
patent: 6419995 (2002-07-01), Kuckertz et al.
patent: 62080826 (1987-04-01), None
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patent: 03207012 (1991-09-01), None
patent: 3-207012 (1991-09-01), None
patent: 405189742 (1993-07-01), None
patent: 2000-63548 (2000-02-01), None

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