PRODUCTION OF OPTICAL DISK

摘要

PURPOSE:To remove the distortions of patterns at the time of transfer by resin shrinkage and to reduce the number of stages by forming a UV resin to a half-cured state and subjecting the resin to the shape transfer of rugged guide grooves. CONSTITUTION:The UV resin 1 is injected into a circular mold 2. A after the resin 1 is sufficiently cast therein, the resin is irradiated with UV rays 3 to produce a resin substrate 4 with which only the surface of the UV resin is uncured and the rest is cured. A transparent stamper 5 having the rugged guide grooves is then superposed on the uncured part of the UV resin and is irradiated with the UV rays 3 after the pressurization. The optical disk substrate 6 is obtd. when the stamper and the cured UV resin are peeled thereafter.