Stock material or miscellaneous articles – Circular sheet or circular blank
Reexamination Certificate
2006-06-13
2006-06-13
Mulvaney, Elizabeth (Department: 1774)
Stock material or miscellaneous articles
Circular sheet or circular blank
C428S064400, C428S054000, C430S270130
Reexamination Certificate
active
07060338
ABSTRACT:
A phase-change optical recording medium capable of performing recording and reproduction at a high speed is provided, in which a reproduced signal output is not only sufficiently large but the phase-change optical recording medium also has excellent repeated rewriting performance. An interface layer3, which is composed of a Ge—Si—N-based material, is formed on at least a surface of one side of a recording layer4of the phase-change optical recording medium10. Accordingly, even when a phase-change material having a high melting point, for example, a Bi—Ge—Te-based phase-change material is used for the recording layer4, it is possible to provide the phase-change optical recording medium in which the reproduced signal output is sufficiently large and the repeated rewriting performance is excellent.
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Iimura Makoto
Ikari Yoshihiro
Kashiwakura Akira
Kitagaki Naoki
Kurokawa Mayumi
Hitachi Maxell Ltd.
Mulvaney Elizabeth
Oliff & Berridg,e PLC
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