| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a laser marking device in which a printing area is adjustable for a desired range even if a lens, a focal distance or a spot diameter are changed. SOLUTION: With the input resistance of a driving circuit 17 as a variable resistance 29, the circuit constant of the driving circuit 17 can be changed. Accordingly, even if the lens is exchanged, by adjusting the resistance value of the variable resistance 29, the displacement of a rotational angle of a galvano-mirror 11 at a unit level of a positional signal can be increased or decreased, thereby enabling the printing area to be corrected to a desired range.</p> |
