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US 9,082,430 B2Granted
Optical information recording medium
AssigneeSony Corporation
InventorsAtsushi Takeuchi, Katsuya Owada
Life of this patent
Estimating the term…
Abstract
An optical information recording medium includes a substrate that has a recessed portion on a surface thereof, a recording layer, and a reflective layer. By combination of ranges of an optical density of the recording layer and a depth of the recessed portion of the substrate, degradation of reflectance is suppressed.
Claims7
An optical information recording medium comprising:
- a substrate that has a recessed portion on a surface thereof;
- a recording layer that includes an organic dye;
- and
- a reflection layer that includes aluminum as a main component thereof,
- wherein degradation of reflectance is suppressed by combination of ranges of an optical density of the recording layer and a depth of the recessed portion of the substrate.
2 more elements
Dependencies are inferred from the claim text.