Patent ID: 7344768

Claim:
An optical disc, comprising: a substrate carrying thereon a recording layer and a cured coating layer laminated in this order in which the cured coating layer acts as an incident side surface for recording light and/or reading light from a laser having a shorter wavelength than a wavelength of a red laser, wherein the cured coating layer is a layer obtained by curing a curable composition comprising a urethane (meth)acrylate and a compound (b2) of the following general formula (I): wherein X 1 and X 2 represent an acryloyloxy group or methacryloyloxy group, X 3 represents a hydroxy group, acryloyloxy group or methacryloyloxy group, and R 1 , R 2 and R3 represent an alkyl group having 1 to 4 carbon atoms, said curable composition having a volume shrinkage coefficient of 7.5% or less, a pencil hardness of 2B or more, a thickness of from 50 to 150 μm, and having a beam transmittance in the wavelength range from 380 to 800 nm of 75% or more.