| 摘要 |
PURPOSE:To eliminate the influence of an adhesive agent for sealing on a recording material and to permit sure sealing by using an urethane acrylate resin as the adhesive agent for sealing and heating the same prior to curing by UV rays. CONSTITUTION:A pair of substrates having a recording layer on at least one side of two disk-shaped substrates are heated prior to curing, by UV rays, of the urethane acrylate resin curable by UV rays in the stage of disposing the substrates in such a manner that the recording layer faces the inside and sealing the substrates via or without via a space by using the above-mentioned resin. The substrates are heated prior to curing of the urethane acrylate by the UV rays in order to increase the adhesive power after coating of said resin on the substrates. The urethane acrylate resin is preferably used together with a photopolymn. initiator. |
