Optical information recording medium and its manufacturing method and apparatus

A method of manufacturing an optical information recording medium, in which a first substrate having a first central bore and a second substrate having a second central bore are bonded to each other through radiation cure resin, comprising the steps of:

• causing the first and second substrates to confront each other by forming a minute gap between the first and second substrates;
• inserting a dispenser into the gap so as to fill the radiation cure resin between the first and second substrates;
• bringing the first and second substrates into close contact with each other through the radiation cure resin so as to foil the first and second substrates integrally;
• detecting that the radiation cure resin has been diffused towards the first and second central bores;
• and
• irradiating radiation to a whole of at least one of opposite outer faces of the integral first and second substrates so as to cure the radiation cure resin wholly.