Optical recording medium

Details Optical recording medium Optical recording medium

2005-04-22

2008-07-15

Mulvaney, Elizabeth (Department: 1794)

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

C428S064500, C430S270130

Reexamination Certificate

active

07399511

ABSTRACT:
An optical recording medium is provided, which are capable of recording and reproducing data with reliability even when blue or blue violet laser light is used as irradiation light. The optical recording medium includes a substrate, and a recording layer formed over the substrate and having its optical characteristic changed by irradiation of the laser light. The recording layer is substantially composed of Bi and O, and the ratio of the number of the O atoms to the total number of Bi and O atoms in the recording layer is 63-73%.

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