| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a manufacturing method for a glass substrate for an information recording medium capable of reducing generation of orange peel and scratch and the glass substrate for the information recording medium polished by the manufacturing method. SOLUTION: In this manufacturing method for the glass substrate for the information recording medium, lapping, first polisher working and second polisher working are performed in a polishing process after substrate working is performed for the glass substrate for the information recording medium. In the first polisher working and second polisher working, cerium oxide is used as polishing agent. In the polishing agent, specific surface area of abrasive grain is 6 to 14 m<2> /g and a maximum particle size of a secondary particle size is 3.0 to 7.0μm.</p> |
