| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the assembly of a rotary polygon mirror to a motor and to prevent an excessive thrust load from being placed during the assembling operation. SOLUTION: On the reverse surface of a flange member 4 united with a shaft 3, the rotor 5 of the motor M1 is fixed and on the top surface of a flange member 4, the rotary polygon mirror 8 is assembled. This assembling operation is performed by fitting a fixed pin 4a stood on the flange member 4 loosely in the through hole 8c of the rotary polygon mirror 8, and charging and setting photosetting resin 9 with light L. No large external force is needed to assemble the rotary polygon mirror 8, and the thrust load placed on the shaft 3 is only the weight of the rotary polygon mirror 8. Further, neither a G ring nor a leaf spring is needed and the assembling process is easy. |
