Optical recording medium
OwnerToshishige Fujii, Hiroyoshi Sekiguchi +4inventors
InventorsToshishige Fujii, Hiroyoshi Sekiguchi, Noboru Sasa, Yoshitaka Hayashi, Masayuki Fujiwara, Toshihide Sasaki
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Abstract
An optical recording medium including a first substrate, multiple information layers in which each of the multiple information layers except for an information layer located at a furthermost back relative to the side of laser beam irradiation includes a recording layer, an upper protective layer and an optical adjustment layer having an absorption index k of from 0.05 to 0.20 to a light having a wavelength of 405 nm arranged in this order from the side of laser beam irradiation; and intermediate layers provided between the multiple information layers.
Claims12
An optical recording medium comprising:
- a first substrate;
- multiple information layers in which each of the multiple information layers except for an information layer located at a furthermost back relative to a side of laser beam irradiation comprises a recording layer, an upper protective layer and an optical adjustment layer having an absorption index k of from 0.05 to 0.20 to a light having a wavelength of 405 nm arranged in this order from the side of laser beam irradiation;
- and
- intermediate layers provided between the multiple information layers.
Dependencies are inferred from the claim text.