| 摘要 |
PROBLEM TO BE SOLVED: To reduce a vibration and noise due to dynamic unbalance by reducing a quantity of unbalance adjustment error caused by the error of application accuracy of an adhesive adjusting agent. SOLUTION: When a polygon mirror 9 for a rotational polyhedral deflectors is fixed on a rotary shaft 2 with a fixing member 8, the fixing member 8 is formed of a disk member overhung from the outer peripheral surface of the polygon mirror to the outside in the radial direction, an annular groove 6 concentric with a motor shaft is formed in the fixing member 8, and the adhesive adjusting agent 7 for adjusting the unbalance of the rotating body is applied inside the annular groove 6. |
