POLISHING CARRIER, METHOD FOR POLISHING GLASS SUBSTRATE FOR MAGNETIC RECORDING MEDIUM, AND METHOD FOR MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC RECORDING MEDIUM

摘要

PROBLEM TO BE SOLVED: To provide a polishing carrier that can prevent an upper surface plate from sticking to a polishing pad, without causing a damage to the polishing pad during a polishing process.SOLUTION: A polishing carrier is used for polishing a glass substrate for magnetic recording medium, wherein the polishing carrier has two main flat surfaces of a first surface and a second surface, and a contact angle with the pure water of the first surface is larger by 10 degrees or more than that with the pure water of a second surface. A method for polishing the glass substrate for magnetic recording medium, and a method for manufacturing the glass substrate for magnetic recording medium, are also provided.