G - Physics – 11 – B
Patent
G - Physics
11
B
352/33.3
G11B 11/14 (2006.01) G11B 11/105 (2006.01)
Patent
CA 2018057
ABSTRACT In accordance with the present invention, there are provided multi-layer recording media having a substrate and thereon multiple recording layers different in coercive force, processes for recording information in the recording media, and reproducing and reproducing devices for recording and reproducing information relying on the use of such recording media and recording processes as mentioned above. Becasue of a multi-layer structure comprising multiple recording layers different in coercive force, the recording media of the invention are capable of recording therein multi-valued information and have improved recording density, recording capacity, data transfer rate and also improved reliability of recorded signals.
Kawamura Norikazu
Mizumoto Kunihiko
Saito Nobuo
Togami Yuji
Kawamura Norikazu
Mitsui Petrochemical Industries Ltd.
Mizumoto Kunihiko
Nippon Hoso Kyokai
Saito Nobuo
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