| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of the uneven load caused by a screw-in position, to eliminate the generation of a backlash between an optical frame and a deflection motor and to obtain a good quality picture by fixing the motor to the frame by the pressing force of an elastic member. SOLUTION: A circular land section 52 is provided to the mounting section of a deflection motor 4 and plural positions are provided in order to precisely determine the heights. A groove section 54 is provided for the bottom side of the section 52 to arrange an elastic member 7 such as an O ring shaped rubber. On the other hand, a thread section 45 is provided for the bottom side of a motor housing 43. A cap shaped nut 46, which has a cover, is screwed into the section 45 in the direction indicated by the arrows in the picture. By mounting the motor 4 onto an optical frame 5 as described above, the motor 4 is precisely mounted with a uniform load and the rectangularity of a laser reflection surface 31 of a rotary polygonal mirror 3 is precisely maintained. |
