Optical information recording medium, and manufacturing...

Details Optical information recording medium, and manufacturing... Optical information recording medium, and manufacturing...

2005-02-17

2008-10-07

Mulvaney, Elizabeth (Department: 1794)

Stock material or miscellaneous articles

Circular sheet or circular blank

C428S064400, C428S064500, C428S064600, C430S270130

Reexamination Certificate

active

07431973

ABSTRACT:
A recording medium has at least a recording layer on a transparent substrate. The recording layer has at least a first phase-changeable film and a second phase-changeable film in that order, starting on the side closest to the transparent substrate. The first phase-changeable film and the second phase-changeable film each contains at least 10 atom % and no more than 50 atom % germanium and at least 45 atom % and no more than 60 atom % tellurium. Also at least one of the phase-changeable films contains bismuth.

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Office Action dated Oct. 19, 2007 in Chinese Application No. 200510054758.4, which is a foreign counterpart of the present application.

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