A metal foil disk for high areal density recording in...

G - Physics – 11 – B

Patent

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G11B 5/66 (2006.01) C23C 14/16 (2006.01) G11B 5/127 (2006.01) G11B 5/48 (2006.01) G11B 5/60 (2006.01) G11B 5/64 (2006.01) G11B 5/73 (2006.01) G11B 5/82 (2006.01) G11B 5/851 (2006.01) G11B 5/012 (2006.01)

Patent

CA 2318290

The invention provides exemplary magnetic recording media, and in particular, flexible metal foil disks, read/write systems having such disks, and methods for making such disks. In one exemplary embodiment, a recording medium is provided which comprises a metallic substrate and at least one sputter deposited film of magnetic material on the substrate. The recording medium has a thickness that is less than about 0.010 inch and the substrate occupies at least 80 % of the thickness. Further, the sputter deposited film is adapted to record and reproduce high areal densities of digital data. In one embodiment, such a recording medium is included in a read/write system to provide a unique recording interface that can resist mechanical shock.

La présente invention concerne des supports d'enregistrement magnétiques et, en particulier, des disques métalliques souples, des systèmes d'écriture/lecture faisant intervenir de tels disques et des procédés de fabrication desdits disques. Selon un mode de réalisation, le support d'enregistrement comprend un substrat métallique et au moins un film de matière magnétique déposé par pulvérisation sur ce substrat. Le support d'enregistrement possède une épaisseur inférieure à environ 0,010 pouce, épaisseur dont 80 % au moins sont occupés par le substrat. Par ailleurs, le film déposé par pulvérisation est étudié pour enregistrer et reproduire des densités élevées en bits/pouce?2¿ de données numériques. Selon un mode de réalisation, un tel support d'enregistrement est inclus dans un système de lecture/écriture qui constitue une interface d'enregistrement unique en son genre et qui est capable de résister à des chocs mécaniques.

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