| 摘要 |
<p>Disclosed is an optical disc comprising a substrate and, successively formed thereon, at least a first light-reflecting layer, an intermediate layer comprising a cured film formed of a ultraviolet-curable composition, a second light-reflecting layer and a light-transmitting layer, wherein the intermediate layer comprising a cured film formed of a ultraviolet-curable composition is laminated directly on the second light-reflecting layer and a blue laser beam is inputted from the light-transmitting layer side to regenerate data. By this optical disc, wherein the cured film of the ultraviolet-curable composition constituting the intermediate layer, that is equipped with the second light-reflecting layer laminated thereon, shows a weight loss of 3.5 mass% or less when cured with ultraviolet light and then allowed to stand in an environment at 110°C for 1 hour, appropriate signal characteristics can be maintained even in a high-temperature environment.</p> |
