| 摘要 |
PURPOSE:To miniaturize and easily assemble as well as decompose a deflecting scanner. CONSTITUTION:A revolving shaft 37 to which a polygon mirror 25 is fixed is held on a housing 35 of a deflector 26 freely rotatably through a bearing 36, and a motor substrate 41 is provided on the upper face of the housing. An optical box 21 is provided with a holding hole 21a to which a body part 35a of the housing is press-fitted with an inclination theta, a pedestal 43 which has pins 43a fitted to the peripheral edge part of the motor substrate 41 to position and support the motor substrate 41, and claws 21b which press the upper face of the peripheral edge part or the motor substrate 41. A small- diameter part 35c and a large-diameter part 35d are continuously formed on the bottom face of the body part 35a of the housing 35, and a tool T can be engaged with the large-diameter part 35d. The body part 358 is fitted to the holding hole 21a, and the tool T is engaged with the large-diameter part 35d and is pulled in the direction of an arrow B. The body part 35d is press-fitted to the holding hole 21a, and pins 43a are fitted to the peripheral edge part of the motor substrate 41 to fix the motor substrate by the pedestal 43 and claws 21b and 21. |
