Optical recording medium
AssigneeTDK Corporation
InventorsTakashi Yamada, Tsuyoshi Komaki, Kenji Yamaga
Life of this patent
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Abstract
An optical recording medium includes a recording layer provided on a substrate. The recording layer includes first and second information layers and a spacer layer therebetween. The optical recording medium also includes a warpage adjusting layer provided on the side of the substrate opposite to the recording layer to reduce the warpage of the spacer layer caused by curing. A moisture proof layer is formed on the surface of the warpage adjusting layer opposite to the recording layer to reduce the warpage of the warpage adjusting layer caused by moisture absorption and releasing by the warpage adjusting layer.
Claims12
An optical recording medium comprising:
- a substrate;
- a recording layer and a light transmitting layer provided on one surface of the substrate;
- a warpage adjusting layer provided on the other surface of the substrate;
- and
- a moisture proof layer provided on the warpage adjusting layer.
An optical recording medium comprising:
- a substrate;
- a recording layer provided on one surface of the substrate and including at least two information layers and a spacer layer provided between the information layers, the spacer layer being formed of a UV curable resin;
- a light transmitting layer provided on the recording layer;
- a warpage adjusting layer provided on the other surface of the substrate;
- and
- a moisture proof layer provided on the warpage adjusting layer.
Dependencies are inferred from the claim text.