Information recording medium
AssigneeTokyo Shibaura Denki Kabushiki Kaisha
InventorHideo Ando
Life of this patent
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Abstract
Disclosed is an information recording medium, comprising a pair of disk-shaped substrates disposed apart from each other; protective layers each formed on the inner surface of the substrate; and optical information recording layers each consisting of an energy-absorbing layer or light reflective layer and formed on the protective layer. The clearance between the mutually facing recording layers may be filled with an adhesive layer. Also, the protective layer, which serves to prevent water or oxygen from entering the recording layer, may be formed on the outer surface of the substrate.
Claims20
An information recording medium, comprising a pair of disk-shaped transparent substrates disposed apart from each other;
- intermediate transparent protective layers each formed on the inner surface of the substrate;
- and optical information recording layers each consisting of an energy-absorbing layer or light reflective layer and formed on the intermediate transparent layer.
An information recording medium, comprising a pair of disk-shaped transparent substrates disposed apart from each other;
- intermediate protective layers each formed on the inner surface of the substrate;
- optical information recording layers each consisting of an energy-absorbing layer or light reflective layer and formed on the intermediate protective layer, and an adhesive layer filling the clearance between the mutually facing information recording layers for the bonding purpose.
An information recording medium, comprising a pair of disk-shaped transparent substrates disposed apart from each other;
- optical information recording layers each consisting of an energy-absorbing layer or light reflective layer and formed on the inner surface of the substrate;
- an adhesive layer filling the clearance between the mutually facing optical information recording layers for the bonding purpose;
- and outer transparent protective layers each formed on the outer surface of the substrate.
Dependencies are inferred from the claim text.