SHEET MATERIAL FOR MULTILAYER OPTICAL RECORDING MEDIUM, MULTILAYER STRUCTURAL BODY FOR OPTICAL RECORDING MEDIUM, AND MULTILAYER OPTICAL RECORDING MEDIUM

摘要

A sheet material for a multilayer optical recording medium (10-a) which comprises an optical recording layer comprising a multiple-photon absorbing material (1), an adhesive layer (4) and a transfer layer of the energy beam curable type (3). The transfer layer of the energy beam curable type (3) is a layer for transferring the shape of a stamper having a shape having protrusions and depressions on the surface as recording pits and/or grooves. The transfer layer of the energy beam curable type (3) and the adhesive layer (4) are each disposed as outermost layers. A multilayer optical recording medium which has a repetitive structure comprising a plurality of laminated optical recording layers and exhibits excellent accuracy of thickness of each layer and the whole laminate can be produced with excellent productivity. Positional information can be contained at the inside of the optical recording medium.