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WORM OPTICAL RECORDING MEDIUM

  • US 20090197117A1
  • Filed: 04/01/2008
  • Published: 08/06/2009
  • Est. Priority Date: 04/02/2007
  • Status: Active Grant
First Claim
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1. A write-once-read-many optical recording medium, comprising:

  • a support substrate; and

    a recording layer and a layer adjacent to the recording layer on the support substrate, the recording layer containing an oxide of one of a metal and a metalloid as a principal component,wherein the recording layer includes a region where a constituent element of the adjacent layer is dispersed, andrecording and reproduction are performable with laser light of a blue wavelength region.

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