Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Reexamination Certificate
2006-05-23
2006-05-23
Huber, Paul W. (Department: 2653)
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
C369S283000, C369S288000, C369S013530
Reexamination Certificate
active
07050361
ABSTRACT:
A magneto-optical storage medium that protects against the effects of cross-talk, making it possible to further reduce the level of track density, and which also makes it possible to conduct high-density recording/playback with a reduced magnetic field for erasure and a favorable level of playback signal quality. More specifically, a magneto-optical storage medium, which includes at least the following laminated layers, in the following order: a playback layer, a non-magnetic layer, a transfer layer, a cut-off layer, and a recording layer. The playback layer preferably displays easy in-plane magnetization characteristics within the monolayer at room temperature, and the transfer layer and the recording layer each have easy magnetization characteristics in the vertical direction of the monolayers at room temperature when each layer is considered as a monolayer. In addition, if the Curie temperature for the cut-off layer is designated as Tcs, and the Curie temperature for the recording layer is designated as Tck, then Tcs<Tck.
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Fujitsu Limited
Greer Burns & Crain Ltd.
Huber Paul W.
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