| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a disk substrate capable of reducing a difference in a polishing amount of both sides when polishing the disk substrate by a polishing machine, and reducing the difference in the polishing amount resulting from different setting positions of the disk substrate. <P>SOLUTION: The method for manufacturing the disk substrate includes steps of setting two measurement boards 100 each having a measurement groove 103 formed on a surface thereof so that the measurement grooves 103 respectively face a first-side polishing side of the polishing machine and a second-side polishing side thereof; polishing the two measurement boards 100 by the polishing machine; measuring post-polishing depths of the measurement grooves 103 in the two measurement boards 100, and adjusting polishing conditions of the both sides of a glass substrate by the polishing machine. <P>COPYRIGHT: (C)2012,JPO&INPIT |
