MANUFACTURING METHOD FOR GLASS SUBSTRATE FOR INFORMATION RECORDING MEDIUM, AND INFORMATION RECORDING MEDIUM

摘要

A carrier (500) has a glass-substrate non-holding region (S) that does not hold a glass substrate (1). If the diameter of the glass substrate (1) is Dmm, the glass-substrate non-holding region (S) includes a circular region encompassing a radius of Dmm from the center position (C1) of the carrier (500). Thus provided are a manufacturing method for a glass substrate for an information recording medium, and an information recording medium, said manufacturing method enabling the suppression of the occurrence of differences in the state of wear of polishing pads in the interval between the outer peripheral region and the inner peripheral region of the polishing pad, and the intermediate region that is present therebetween, when polishing using a double disc polishing device.