Stock material or miscellaneous articles – Circular sheet or circular blank – Recording medium or carrier
Reexamination Certificate
2006-11-28
2006-11-28
Hess, Bruce H. (Department: 1774)
Stock material or miscellaneous articles
Circular sheet or circular blank
Recording medium or carrier
Reexamination Certificate
active
07141289
ABSTRACT:
An optical information recording medium which is capable of performing high-density recording of record data, and storing the recorded data for a long time period such that the recorded data can be normally reproduced during the long time period. An optical information recording medium has a recording layer formed on a substrate, for having a laser beam irradiated thereto for recording and reproduction of record data. The recording layer includes a first sub-recording film and a second sub-recording film. The first sub-recording film is formed of a first material containing Si as the main component. The second sub-recording film is formed of a second material containing Cu as the main component and having Zn added thereto, and disposed in the vicinity of the first recording film.
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Aoshima Masaki
Hirata Hideki
Inoue Hiroyasu
Mishima Koji
Utsunomiya Hajime
Greenblum & Bernstein P.L.C.
Hess Bruce H.
TDK Corporation
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