Storage medium, reproducing method, and recording method
AssigneeKabushiki Kaisha Toshiba
InventorsHideo Ando, Seiji Morita, Koji Takazawa, Yasuaki Ootera, Naoki Morishita, Kazuyo Umezawa
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Abstract
According to one embodiment, a write-once type information storage medium comprises a recording layer which is formed by mixing a plurality of organic dye based recording materials whose molecular weights are different from each other, and wherein a mixture ratio of organic dye based recording materials whose molecular weight is small is larger than a mixture ratio of organic dye based recording materials whose molecular weight is large.
Claims3
A write-once type information storage medium comprising a recording layer which is formed by mixing a plurality of organic dye based recording materials whose molecular weights are different from each other, wherein a mixture ratio of organic dye based recording materials whose molecular weight is small is larger than a mixture ratio of organic dye based recording materials whose molecular weight is large.
A method for reproducing information recorded in a write-once type information storage medium comprising a recording layer which is formed by mixing a plurality of organic dye based recording materials whose molecular weights are different from each other, wherein a mixture ratio of organic dye based recording materials whose molecular weight is small is larger than a mixture ratio of organic dye based recording materials whose molecular weight is large, the method comprising:
- irradiating the storage medium with a light beam of 620 nm or less in wavelength;
- and
- reproducing information based on a reflection light beam of the irradiated light beam.
A method for recording information in a write-once type information storage medium comprising a recording layer which is formed by mixing a plurality of organic dye based recording materials whose molecular weights are different from each other, wherein a mixture ratio of organic dye based recording materials whose molecular weight is small is larger than a mixture ratio of organic dye based recording materials whose molecular weight is large, the method comprising:
- irradiating the storage medium with a light beam of 620 nm or less in wavelength, and
- recording information based on the irradiated light beam.
Dependencies are inferred from the claim text.