Optical recording medium, erasure apparatus and erasure method thereof
AssigneeEmpire Technology Development LLC
InventorTakahisa Kusuura
Life of this patent
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Abstract
A new optical recording medium capable of reducing the burden in erasing data in the optical recording medium is provided. The optical recording medium includes an organic pigment recording layer 12 and a light reflecting layer 14, which are at least laminated on a substrate 11, wherein a photocatalyst layer 13 is formed in contact with the organic pigment recording layer 12.
Claims18
An optical recording medium comprising:
- a substrate;
- an organic pigment recording layer formed on the substrate;
- and
- a photocatalyst layer in physical contact with the organic pigment recording layer;
- wherein the photocatalyst layer is configured to demonstrate oxidation in response to being irradiated with light having a first wavelength such that the oxidation of the photocatalyst layer causes erasure of data recorded in the organic pigment recording layer.
An erasure apparatus that erases information recorded in an optical recording medium the erasure apparatus comprising:
- a first optical irradiation system configured to emit light having a first wavelength at the optical recording medium, wherein the optical recording medium includes an organic pigment recording layer and a photocatalyst layer in physical contact with the organic pigment recording layer, and wherein the light having the first wavelength is configured to cause oxidation of the photocatalyst layer and erasure of data recorded in the organic pigment recording layer;
- and
- a control system configured to cause the first optical irradiation system to irradiate the optical recording medium with the light having the first wavelength.
An erasure method for erasing information recorded in an optical recording medium the erasure method comprising:
- providing the optical recording medium, wherein the optical recording medium includes an organic pigment recording layer configured to store data and a photocatalyst layer in physical contact with the organic pigment recording layer;
- and
- irradiating the optical recording medium with light having a first wavelength such that the photocatalyst layer demonstrates oxidation, and wherein the oxidation of the photocatalyst layer causes erasure of data stored on the organic pigment recording layer.
Dependencies are inferred from the claim text.