Optical information recording medium
AssigneeSharp Kabushiki Kaisha
InventorsNobuyuki Takamori, Hideharu Tajima, Akira Takahashi
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Abstract
An optical information recording medium characterized by comprising a temperature-sensitive layer formed on a substrate, for reversibly changing in reflectance and/or transmittance with a temperature change. A temperature-sensitive layer having the property of changing in reflectance with a temperature change is used, as well as the property of changing in light interference effect with a temperature change, thereby providing an optical information recording medium capable of providing a higher, more stable reproduction signal power.
Claims13
An optical information recording medium characterized in that a temperature-sensitive film of CeO2 or ZnO and a reflection film are formed in that order on a side of a substrate having information recorded therein by means of concavities and convexities that is opposite to a reproduction light incident side of said substrate.
An optical information recording medium characterized in that a temperature sensitive film of CeO2 or ZnO, an organic dye film for recording information and a reflection film are formed in that order on a side of a substrate opposite to a reproduction light incident side of said substrate.
An optical information recording medium characterized in that a temperature sensitive film of CeO2 or ZnO, a dielectric film, a magneto-optic film for recording information, a dielectric film and a reflection film are formed in that order on a side of a substrate opposite to a reproduction light incident side of said substrate.
An optical information recording medium characterized in that a temperature sensitive film of CeO2 or ZnO, a dielectric film, a phase change film for recording information, a dielectric film and a reflection film are formed in that order on a side of a substrate opposite to a reproduction light incident side of said substrate.
Dependencies are inferred from the claim text.