Information recording medium which indicates information according to the wobbling of a track and information recording and reproducing apparatus

摘要

A manufacturing method for a stamper for an information recording medium includes driving an original disk, irradiating a beam for exposure on the original disk, performing exposure to light in a shape of a track by scanning the beam in a radial direction of the original disk, controlling a width of the scanning so that borders on both sides of the track are shifted in phase from each other with a phase difference. The original disk is developed to form the track, and a shape of a surface of the original disk is transferred to a stamper.