Patent ID: 6743320
Filing Date: 2004-06-01
Classification: B29D,G11B

Abstract:
A method of manufacturing an optical information recording medium, said manufacturing method comprising:bonding a stamper having a principal plane formed with a groove or asperity pits and a second substrate having a thickness of 0.3 mm or less with radiation cured resin so as to cause the groove or the asperity pits to face to the second substrate, the stamper being transparent, and the groove or the asperity pits having a thin film formed thereon; emitting radiation so as to pass at least a part of the radiation through the stamper to cure the radiation cured resin; peeling off the stamper to form the groove or the asperity pits on a face the second substrate; forming a metal film or a recording film on the groove or the asperity pits on the second substrate to create a second information recording layer on the second substrate; and bonding a first substrate and the second substrate on which the second information recording layer is formed, such that the second information recording layer is placed between the first and second substrates.