| 摘要 |
PURPOSE:To obtain an optical disk which is free from exfoliation even after resting at the under a high temp. and high humidity and has high long-term reliability by providing a tightly adhered layer consisting of a mixture composed of a photosetting resin and transparent inorg. material between a transparent resin substrate and recording layer. CONSTITUTION:The tightly adhered layer 21 consisting of the material mixture composed of the photosetting resin and transparent dielectric material is provided between the transparent resin substrate 1 as represented by a polymethyl methacrylate, polycarbonate, epoxy, etc. and the recording layer 3 consisting of a metal, semiconductor, metallic compd., etc., which cause an optical change by the irradiation of light. The formation of the tightly adhered layer is executed by uniformly coating the photosetting resin having about several 10 - several 100[Cp] viscosity in the environment where light is shielded onto the substrate, installing the transparent resin substrate in a thin film forming device and irradiating near UV - blue visible light to the uncured photosetting resin layer to cure the photosetting resin simultaneously with deposition of the transparent inorg. material by sputtering vapor deposition or vacuum deposition on the uncured photosetting resin layer. |
