Storage medium, reproducing method, and recording method
AssigneeKabushiki Kaisha Toshiba
InventorsTsukasa Nakai, Seiji Morita, Koji Takazawa, Yasuaki Ootera, Naoki Morishita, Kazuyo Umezawa, Hideo Ando
Life of this patent
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Abstract
According to one embodiment, a storage medium comprises a transparent resin substrate on which a groove is formed, a recording layer formed on the groove on the transparent resin substrate, the recording layer using an organic dye material and recording information with a light beam of 620 nm or less in wavelength, a reflection layer formed on the recording layer, and a prevention layer formed between the recording layer and the reflection layer, the prevention layer preventing degradation of characteristics of the reflection layer.
Claims3
A storage medium comprising:
- a recording layer using an organic dye material formed on a substrate;
- and
- a reflection layer comprises Ag and an additive element which prevents degradation of recording and reproducing characteristics due to reaction with Ag and the organic dye material.
A method for reproducing information recorded in a storage medium which comprises a transparent resin substrate on which a groove is formed, a recording layer formed on the groove on the transparent resin substrate, the recording layer using an organic dye material and recording information with a light beam of 620 nm or less in wavelength, a reflection layer formed on the recording layer, and a prevention layer formed between the recording layer and the reflection layer, the prevention layer preventing degradation of characteristics of the reflection layer, a recording mark being formed by irradiation of a light beam, the method comprising:
- irradiating the storage medium with a light beam of 620 nm or less in wavelength;
- and
- reproducing information recorded in the storage medium based on a reflection light beam of the irradiated light beam.
A method for recording information in a storage medium which comprises a transparent resin substrate on which a groove is formed, a recording layer formed on the groove on the transparent resin substrate, the recording layer using an organic dye material and recording information with a light beam of 620 nm or less in wavelength, a reflection layer formed on the recording layer, and a prevention layer formed between the recording layer and the reflection layer, the prevention layer preventing degradation of characteristics of the reflection layer, a recording mark being formed by irradiation of a light beam, the method comprising:
- irradiating the storage medium with a light beam of 620 nm or less in wavelength based on information to be recorded in the storage medium;
- and
- recording information in the storage medium based on the irradiated light beam.
Dependencies are inferred from the claim text.