| 摘要 |
PURPOSE:To obtain the optical disc which is excellent in impact resistance, in which the photo-setting adhesive gives no adverse influence to an information recording layer, the adhesive is cured in a very short time without need of heeting, the cured adhesive layer is rich in flexibility and does not give deformation to the disc substrate. CONSTITUTION:An information recording layer 2 is formed on a transparent substrate 1, and the layer is placed opposite to another substrate 5 and joined with a spacer 3. The joined part of the spacer is fixed with a photo-setting adhesive 6 containing a urethaneacrylate photo-setting oligomer having a polyether bond in the backbone having above 300 molecular wt., a monofunctional acrylate photo-setting monomer containing at least one or more polymerizable ethylenical double bond in the molecule and having above 300 molecular wt. and a photophlymerization initiator. |
