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

摘要

Provided is a manufacturing method of a glass substrate for an information recording medium which reliably removes a polishing agent or foreign matter stuck to the glass substrate without complicating a washing process. The surface of the glass substrate is washed using two kinds of scrub members having the rotation axes in different directions with respect to the surface of the glass substrate. When washing the surface of the glass substrate using one of the scrub members, the angle formed by the surface of the glass substrate and the rotation axis of the scrub member is generally 0º. When washing the surface of the glass substrate usingthe other scrub member, the angle formed by the surface of the glass substrate and the rotation axis of the scrub member is generally 90º.