Patent ID: 6977018
Filing Date: 2005-12-20
Classification: B29C,B29L,B32B,G11B

Abstract:
1. A method of manufacturing an optical information recording medium comprising a first substrate and a second substrate, said method comprising: bringing the first substrate and the second substrate into close contact with each other with a radiation cure resin located in between the first substrate and the second substrate to integrally bond the first substrate and the second substrate; rotating the first and second substrates; measuring a thickness of the radiation cure resin or a sum of the thickness of the radiation cure resin and a thickness of the second substrate at an inner region of the first substrate and the second substrate extending radially from a center of the first and second substrates; when the thickness of the radiation cure resin or the sum of the thickness of the radiation cure resin and the thickness of the second substrate at the inner region reaches a preset value, irradiating the inner region of the first substrate and the second substrate to cure only a portion of the radiation cure resin at the inner region; and irradiating the first substrate and the second substrate, after said irradiating of the inner region, to cure a remainder of the radiation cure resin.