OPTICAL DISK AND ITS MANUFACTURE

摘要

PROBLEM TO BE SOLVED: To provide a laminated-type optical disk, which has the excellent heat resistance, can sufficiently obtain bonding strength and has the stabilized characteristics of the change in environment. SOLUTION: This disk has an information recording region on a pair of translucent substrates so that the outer surface part and the inner surface part remain. Furthermore, the disk has the protecting film of ultravmolet-ray hardening type resin containing metal ions. A bonding agent, which contains a component giving ultraviolet-ray hardening property and a component giving anaerobic hardening property is used.