Recording medium, information recording method, information reading method, and composition for producing recording layer
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKota Ando, Masako Yokoyama, Naoya Sakata, Kenji Tagashira, Hidekazu Arase
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Abstract
A recording medium includes a recording layer. The recording layer includes an aliphatic polymer, and a multiphoton absorption compound containing at least one bond selected from the group consisting of a carbon-carbon double bond, a carbon-nitrogen double bond, and a carbon-carbon triple bond, and having a multiphoton absorption characteristic. When the thickness of the recording layer is 100 μm, the transmittance of the recording layer in the thickness direction with respect to light having a wavelength of 405 nm is greater than or equal to 80%.
Claims14
A recording medium comprising:
- at least one recording layer, wherein
- the at least one recording layer comprises:
- an aliphatic polymer;
- and
- a multiphoton absorption compound containing at least one bond selected from the group consisting of a carbon-carbon double bond, a carbon-nitrogen double bond, and a carbon-carbon triple bond, and having a multiphoton absorption characteristic;
- and
- when a thickness of the at least one recording layer is 100 μm, a transmittance of the at least one recording layer in a thickness direction with respect to light having a wavelength of 405 nm is greater than or equal to 80%.
A composition for producing a recording layer having a transmittance greater than or equal to 80% in a thickness direction with respect to light having a wavelength of 405 nm when a thickness of the recording layer is 100 μm, the composition comprising:
- an aliphatic monomer;
- and
- a multiphoton absorption compound containing at least one bond selected from the group consisting of a carbon-carbon double bond, a carbon-nitrogen double bond, and a carbon-carbon triple bond, and having a multiphoton absorption characteristic.
Dependencies are inferred from the claim text.