Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1994-12-28
1996-12-31
Resan, Stevan A.
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
428408, 428409, 428421, 428457, 428694TP, 428694TC, 428694TF, 428900, G11B 572
Patent
active
055892639
ABSTRACT:
A ferromagnetic metal thin film recording medium having a nonmagnetic substrate, a ferromagnetic metal thin film formed on the nonmagnetic substrate, a dry etched layer which is formed in a surface layer of the ferromagnetic metal thin film and contains oxygen atoms in a higher concentration than the remaining part of the ferromagnetic metal thin film, a hard carbonaceous film formed on the dry etched layer of the ferromagnetic metal thin film, a lubricant layer formed on said hard carbonaceous film, and optionally a modified layer which is formed on the hard carbonaceous film and has a thickness of less than 3 nm, and comprises carbon, nitrogen and oxygen atoms with an atomic ratio of nitrogen to carbon being at least 0.8%, which recording medium has improved running stability, durability and weatherability while maintaining electromagnetic conversion characteristics.
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Kuwahara Kenji
Murai Mikio
Odagiri Masaru
Okazaki Sadayuki
Seki Hiroshi
Matsushita Electric - Industrial Co., Ltd.
Resan Stevan A.
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