Optical recording medium
AssigneeSony Corporation
InventorsTeruyuki Ota, Makoto Watanabe, Yoshihito Fukushima
Life of this patent
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Abstract
Disclosed herein is an optical recording medium, including: a substrate; and an information recording layer formed on the substrate, an information signal being recorded and reproduced in and from the information recording layer by radiation of a light; wherein the information recording layer includes a reflecting layer, a dielectric layer formed on the reflecting layer, and a recording layer formed on the dielectric layer, the dielectric layer includes a first dielectric layer and a second dielectric layer, and a thermal conductivity of the second dielectric layer located on the reflecting layer side is higher than that of the first dielectric layer located on the recording layer side.
Claims9
An optical recording medium, comprising:
- a substrate;
- and
- an information recording layer formed on said substrate, an information signal being recorded and reproduced in and from said information recording layer by radiation of a light;
- wherein said information recording layer includes
- a reflecting layer,
- a dielectric layer formed on said reflecting layer, and
- a recording layer formed on said dielectric layer,
- said dielectric layer includes a first dielectric layer and a second dielectric layer, and
- a thermal conductivity of said second dielectric layer located on the reflecting layer side is higher than that of said first dielectric layer located on the recording layer side.
An optical recording medium, comprising:
- a substrate;
- and
- a first information recording layer and a second information recording layer formed on said substrate, information signals being recorded and reproduced in and from said first information recording layer and said second information recording layer, respectively, by radiation of a light;
- wherein the information signal is recorded and reproduced in and from said first information recording layer by radiating the light transmitted through said second information recording layer to said first information recording layer,
- said second information recording layer includes
- a reflecting layer,
- a dielectric layer formed on said reflecting layer, and
- a recording layer formed on said dielectric layer,
- said dielectric layer includes a first dielectric layer and a second dielectric layer, and
- a thermal conductivity of said second dielectric layer located on the reflecting layer side is higher than that of said first dielectric layer located on the recording layer side.
An optical recording medium, comprising:
- a substrate;
- and
- an information recording layer formed on said substrate, an information signal being recorded and reproduced in and from said information recording layer by radiation of a light;
- wherein said information recording layer includes
- a reflecting layer,
- a dielectric layer formed on said reflecting layer, and
- a recording layer formed on said dielectric layer containing therein bismuth, germanium and tellurium, and
- said dielectric layer contains therein oxides of silicon, indium and zirconium.
An optical recording medium, comprising:
- a substrate;
- and
- a first information recording layer and a second information recording layer formed on said substrate, information signals being recorded and reproduced in and from said first information recording layer and said second information recording layer, respectively, by radiation of a light;
- wherein the information signal is recorded and reproduced in and from said first information recording layer by radiating the light transmitted through said second information recording layer to said first information recording layer,
- said second information recording layer includes
- a reflecting layer,
- a dielectric layer formed on said reflecting layer, and
- a recording layer formed on said dielectric layer, containing therein bismuth, germanium and tellurium and
- said dielectric layer contains therein oxides of silicon, indium and zirconium.
Dependencies are inferred from the claim text.