Phase-change recording material and information recording...

Details Phase-change recording material and information recording... Phase-change recording material and information recording...

2006-09-12

2006-09-12

Mulvaney, Elizabeth (Department: 1774)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064400, C428S064500, C428S064600, C430S270130

Reexamination Certificate

active

07105217

ABSTRACT:
A phase-change recording material on which high velocity recording/erasing is possible, which provides excellent recording signal characteristics, which provides a high storage stability of the recording signals, with which the change in the reflectivity of the recorded signals is small even after a long term storage, and which provides excellent recording signal characteristics even if overwriting is carried out again, and an information recording medium employing the above material, are provided.It is characterized by containing as the main component a composition represented by Gex(InwSn1-w)yTezSb1-x-y-z(wherein the Sb content is higher than any one of the Ge content, the In content, the Sn content and the Te content, and x, y, z and w representing atomicity ratios satisfy (i) 0≦x≦0.3, (ii) 0.07≦y-z, (iii) wxy-z≦0.1, (iv) 0<z, (v) (1−w)xy≦0.35 and (vi) 0.35≦1-x-y-z).

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