| 摘要 |
An optical recording medium wherein a recording layer, an absorbent layer and a radiating layer are provided in this order as seen from a recording/reproducing light incidence side and recording/reproduction is carried out on a condition that an extinction coefficient k of the absorbent layer is k>0 in a wavelength of recording/reproducing light, and a relationship between a wavelength lambd of the recording/reproducing light and a numerical aperture NA of an irradiating optical system of the recording/reproducing light is lambd/NA<=680 nm. An optical recording medium wherein an absorbent layer and a recording layer are provided in this order as seen from a recording/reproducing light incidence side and an extinction coefficient k of the absorbent layer is k>0 in a wavelength of recording/reproducing light, and a signal including a minimum mark having a mark length Ms of MS<=0.17 mum is recorded.
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