Patent ID: 8632871
Filing Date: 2014-01-21
Classification: B82Y,G11B,Y10T

Abstract:
1. A film for producing a sheet for a multilayer optical recording medium, said sheet having a repeating structure comprising a plurality of laminated optical recording layers, wherein the sheet has a structure comprising a unit in which an optical recording layer and an adhesive layer are laminated or a structure comprising a unit in which an optical recording layer, a barrier layer and an adhesive layer are laminated in this order, and a maximum height roughness (Rz) of the optical recording layer or the barrier layer is 500 nm or smaller, wherein the optical recording layer or the barrier layer is disposed on a process film on a face at a side for forming the optical recording layer or at a side for forming the barrier layer, the face at the side for forming the optical recording layer or at the side for forming the barrier layer of the process film having a maximum height roughness (Rz) of 500 nm or smaller.