METHOD FOR ERASING DATA OF OPTICAL DISK

摘要

PROBLEM TO BE SOLVED: To provide a method for erasing data of an optical disk which is capable of surely erasing the recording data of the optical disk which allows just one time of writing of data. SOLUTION: The desired data recording region of the optical disk which allows just one time of writing of data is irradiated with a laser beam of power exceeding the power in reproducing, by which the recording data of the desired data recording region is erased.