Light recording medium
First Claim
1. In a light recording medium which has a substrate and a recording layer provided on said substrate and effects recording of information by selective removal or deformation of the recording layer by laser light, the light recording medium which is characterized by that said recording layer contains an organic dye as a light absorber, said dye is a mixed dye obtained by mixing a plurality of dyes having different light absorbing wavelengths from each other and the recording layer has a light absorptivity of 80% or more at the whole wavelengths in the range of 400-900 nm in wavelength.
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Accused Products
Abstract
A light recording medium which has a substrate and a recording layer provided thereon and effects recording of information by selective removal or deformation of the recording layer by laser light, which is characterized by that said recording layer contains an organic dye as a light absorber, said dye is a mixed dye obtained by mixing a plurality of dyes having different light absorbing wavelengths from each other and the recording layer has a light absorptivity of 80% or more at all the wavelengths in the range of 400-900 nm in wavelength.
135 Citations
2 Claims
- 1. In a light recording medium which has a substrate and a recording layer provided on said substrate and effects recording of information by selective removal or deformation of the recording layer by laser light, the light recording medium which is characterized by that said recording layer contains an organic dye as a light absorber, said dye is a mixed dye obtained by mixing a plurality of dyes having different light absorbing wavelengths from each other and the recording layer has a light absorptivity of 80% or more at the whole wavelengths in the range of 400-900 nm in wavelength.
Specification
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- Resources
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Current AssigneeTDK Corporation
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Original AssigneeTDK Electronics (TDK Corporation)
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InventorsNamba, Kenryo, Nakagawa, Shiro, Kuroiwa, Akihiko
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Primary Examiner(s)Griffin, Donald A.
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Application NumberUS06/362,652Time in Patent Office575 DaysField of Search346/1.1, 346/135.1, 346/76 L, 346/137, 358/297, 428/156, 428/913, 430/945US Class Current346/135.1CPC Class CodesG11B 2007/24612 two or more dyes in one layerG11B 7/244 comprising organic material...G11B 7/246 containing dyesG11B 7/2472 cyanineG11B 7/2531 comprising glassG11B 7/2533 comprising resinsY10S 430/146 Laser beamY10S 430/165 Thermal imaging composition
