| 摘要 |
PURPOSE:To miniaturize an electrophotographic device main body obtaining a good image quality by abutting an electrostatic image forming device to a surface of a photosensitive drum through a positioning pin and by making relative position of the electrostatic image forming device and the photosensitive drum to be freely variable through the positioning pin. CONSTITUTION:The electrostatic image forming device 3 is pressurized in a direction of an arrow A by a spring 22 through a positioning pin 18, is abutted to the photosensitive drum 1, and even when the rotation of the drum 1 is eccentric, since the device 3 follows the eccentricity, an appropriate focal distance is constantly maintained. When the photographic device main body A is opened with a rotational shaft 10 as the center, a base tip part of a retaining member 19b is released by a positioning cam 21, and the device 3 is rotated in the direction of the arrow C by pulling force of the spring 23 with the rotational supporting point 20 as the center. With this constitution utilizing the pin 18, the image of the good quality can be formed and since the relative distance between the drum 1 and the device 3 can be freely varied through the pin 18, the focal distance of the device 3 can be make short and the photographic device main body can be miniaturized. |
