| abstract |
An ultraviolet curable composition is prepared by using a maleimide compoundnitself having a photopolymerization initiating function, as a main component, in combinationnwith various acrylate compounds as a subsidiary component, and a light transmitting layer isnformed from the ultraviolet curable composition. In an information storage mediumncomprising at least a reflection film, an information storage layer and a light transmittingnlayer made of the ultraviolet curable composition formed on a substrate, when using lasernlight having an emission wavelength of 370 to 430 nm as an irradiation light source,nrecording or playback of information is conducted at high storage density. |