MOLD FOR OPTICAL DISC, METHOD FOR CORRECTING ECCENTRICITY OF OPTICAL DISC BOARD, AND STAMPER

摘要

PROBLEM TO BE SOLVED: To provide an optical disc having a small eccentricity. SOLUTION: A method for correcting eccentricity of an optical disc board using a mold having a stamper holder 6 in which a center of a sectional axis of a stamper holder is deviated from a center of a sectional axis of an engaging part of an end plate member comprises the steps of deviating the center of the sectional axis of the stamper holder from the center of the sectional axis of the engaging part of the end plate member at a suitable amount in a direction for cancelling the eccentricity of the stamper 1 and the mold, and correcting the eccentric amount of the disc to 10μm or less.