| 摘要 |
There are provided a method of manufacturing a glass substrate for information recording media that is capable of manufacturing a glass substrate for information recording media having excellent smoothness and cleanliness as required for a disk substrate, and a glass substrate for information recording media manufactured using the method. A glass substrate is subjected to precision polishing. The glass substrate is then subjected to first washing treatment using an acidic aqueous solution and an alkaline aqueous solution, then subjected to heat treatment, and then subjected to second washing treatment once again using an acidic aqueous solution and an alkaline aqueous solution. As a result, foreign matter such as polishing agent can be removed almost completely through the first washing treatment, then permanent strain generated during the polishing can be relaxed through the heat treatment, and then surface undulations remaining on the surface of the glass substrate can be removed through the second washing treatment. A glass substrate for information recording media having excellent surface smoothness and cleanliness can thus be manufactured.
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