Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1998-04-03
2000-02-22
Kiliman, Leszek
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
428336, 428694T, 428694TS, 428694TP, 428900, G11B 566
Patent
active
060278013
ABSTRACT:
The present invention provides a magnetic recording medium with distinguished SNR and mechanical characteristics, which comprises an underlayer, a ferromagnetic thin film metallic layer and a protective film layer successively and continuously laminated on a non-magnetic resin substrate, where (A) at least one layer selected from the group consisting of an Si layer, an Si.sub.w N.sub.x C.sub.y O.sub.z layer and an Al.sub.w N.sub.x C.sub.y O.sub.z layer and (B) at least one layer selected from the group consisting of silicides, nitrides, oxides or their mixtures of Ti, Ta, Mo, V, Zr and their alloys are laminated on the non-magnetic resin substrate in the order of (A) and (B) or (i) a layer composed of at least one material selected from the group consisting of Ti, Ta, Mo, V, Zr, Nb and their alloys, (ii) at least one layer selected from the group consisting of an Si layer, an Si.sub.w N.sub.x C.sub.y O.sub.z layer and an Al.sub.w N.sub.x C.sub.y O.sub.z layer (where w+x+y+z=100 at. %, w.gtoreq.30 at. %, 0 .ltoreq.z.ltoreq.50 at. % and x+y.gtoreq.20 at. %), and (iii) a layer composed of at least one material selected from the group consisting of Ti, Ta, Mo, V, Zr and their alloys are laminated on the non-magnetic resin substrate in the order of (i), (ii) and (iii), between the non-magnetic resin substrate and the underlayer.
REFERENCES:
patent: 5693426 (1997-12-01), Lee
patent: 5766727 (1998-06-01), Moroishi et al.
patent: 5800931 (1998-09-01), Lee
patent: 5824427 (1998-10-01), Kobayashi
Adachi Kazuyoshi
Daimon Hideo
Ishizaki Osamu
Kitagaki Naoki
Maro Tsuyoshi
Hitachi Maxell Ltd.
Kiliman Leszek
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