| 摘要 |
An optical recording medium includes a recording layer containing a cyanine dye and a quencher and a light transmittance reducing section for reducing the transmission of ultraviolet rays to the recording layer, and the light transmittance reducing section is composed of at least one of a substrate and a function layer. When the component ratio of the quencher to the total number of moles of the cyanine dye and the quencher is shown by A and the transmittance of ultraviolet rays of the light transmittance reducing section is shown by B, the component ratio A and the transmittance B are defined to satisfy the following mathematical formulas (1) and (2). With this arrangement, the optical recording medium can execute recording at a high linear speed while securing sufficient light stability. <?in-line-formulae description="In-line Formulae" end="lead"?>0.3>=A>=-(B+0.075)/1.25 (1) <?in-line-formulae description="In-line Formulae" end="tail"?> <?in-line-formulae description="In-line Formulae" end="lead"?>0.3>=B>=0.05 (2) <?in-line-formulae description="In-line Formulae" end="tail"?>
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