PRODUCTION OF OPTICAL RECORDING MEDIUM

摘要

PURPOSE:To realize the manufacture of an optical recording medium which can uniformly execute initialization and can improve the reliability and the yield by irradiating the board surface of the optical recording medium with laser beams in the state of reducing the dispersion of power density. CONSTITUTION:In a process to initialize the recording layer of a phase change type optical recording medium 1, the board surface of the phase change type optical recording medium 1 is irradiated with Ar laser beams 21 in the state of arranging the phase change type optical recording medium 1 on the side of a light source rather than the beam waist of the Ar laser beams 21.