| 摘要 |
PURPOSE:To enable secure and accurate positioning with simple configuration by fitting and exposure head to a bracket in a position adjustable state so that the pressing force to a leaf spring member varies when the position is adjusted. CONSTITUTION:The gap between the tip of the exposure head 3 and a photosensitive body 1 is accurately adjusted with the elastic force of a leaf spring 25 and the clamping force of a nut 41, and the position can securely be held. Further, the exposure head 3 is held at a constant position while the parallelism and angle of rotation to the shaft of the photosensitive drum 1 are accurately held because of the balance between the anticlockwise force of the leaf spring 25 on a center G of gravity and the clockwise force from an abutting piece 24. Heat generated by the exposure head is conducted to the whole bracket through a leaf spring member and radiated efficiently. |
