| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical disk drawing device capable of adjusting the optimal focus servo gain when redrawing is performed even into an optical disk wherein drawing have been performed on a label surface side. <P>SOLUTION: Control of the stable focus servo can be performed by providing an automatic adjustment area 103 where drawing is not performed at the optical disk 100 and performing adjustment of the focus servo gain while irradiating the automatic adjustment area 103 with a laser beam 13 even though, conventionally, a drawn region and an un-drawn region are frequently and alternately switched since an already drawn matter is an image, a reflection beam of the laser beam 13 is not stabilized and it is difficult to perform accurate adjustment of the focus servo gain when drawing is additionally performed after drawing is performed on a drawing layer 112 of the optical disk 100. <P>COPYRIGHT: (C)2008,JPO&INPIT |
