Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1993-10-28
1997-03-25
Kiliman, Leszek
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
428336, 428408, 428694T, 428694TP, 428694TC, 428694TZ, 428694TF, 428694TR, 428695, 428900, 2041922, G11B 566, B32B 516, C23C 1400
Patent
active
056143141
ABSTRACT:
A magnetic recording medium and a method for the manufacture thereof are disclosed that are less likely to result in head crushing even if high-hardness slider materials are used, and which is formed with a carbon protective layer that has good anti-CSS characteristics. The carbon protective layer is formed using a sputtering gas mixed with methane at a greater amount than predetermined to form a carbon protective layer in which diamond bonds are present at a higher ratio than graphite bonds, and polymeric bonds are present to an adequate degree. A magnetic recording medium having such a carbon protective layer shows a very high durability in a CSS cycle test.
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Patent Abstracts of Japan, vol. 16, No. 404 (P-1410), Aug. 26, 1992 & JP-A-04 134 623 (SNYO Electric Co Ltd) May 8, 1992.
Patent Abstracts of Japan, vol. 12, No. 112 (P-687), Apr. 9, 1988 & JP-A-62 241 124 (Matsushita Electric Ind Co) Oct. 21, 1987.
Database WPI, Week 9237, Derwent Publications Ltd., London, GB; AN 92-305306 & JP-A-4 212 715 (Fuji Electric Mfg Co) Aug. 4, 1992.
1990 Digests of Intermag '90, International Magnetics Conference, Apr. Metropole Hotel Brighton, UK Part HA-07, Yassin Mehmandoust et al.: "Hydrogenated Amorphous Carbon (a-C:H) Overcoat for Thin-Film Magnetic Rigid-Disk Application".
Itoh Yoshiaki
Kashiwakura Yoshiharu
Nimura Kazuo
Nishimura Michinori
Osawa Michio
Fuji Electric & Co., Ltd.
Kiliman Leszek
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