Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1990-04-05
1991-02-19
Thibodeau, Paul J.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
2041922, 20419216, 427 34, 427132, 428408, 428694, 428900, G11B 2300
Patent
active
049943219
ABSTRACT:
A perpendicular magnetic recording medium such as a floppy disk is created by providing on at least one surface of a non-magnetic support, a magnetic layer having perpendicular magnetic anisotropy and a protective layer by sputtering. First, a magnetic layer is provided, secondly, the magnetic layer is surface treated by a plasma treatment or by applying an oxide layer or a nitride layer thereon and thirdly, the protective layer is applied thereto.
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Nagao Makoto
Nahara Akira
Sano Kunihiko
Yamanaka Fusao
Fuji Photo Film Co. , Ltd.
Thibodeau Paul J.
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