PHOTORECEPTOR DRUM SUPPORTING DEVICE

摘要

PROBLEM TO BE SOLVED: To precisely correct the decentering of a photoreceptor drum by installing aligning mechanisms moving the photoreceptor drum in the radial direction thereof and moving and adjusting the shaft center position thereof between both end parts of the shaft direction of the photoreceptor drum and a pair of side plates. SOLUTION: A rotary shaft 4 is freely rotatably and axially supported by a main body frame 1 through a housing 2 and a bearing 3 and a pair of side plates 5 are fitted in both side parts of the shaft 4. Then, the aligning mechanisms 6 are arranged on the side plates 5 so that the cylindrical photoreceptor drum 7 is fitted outside through the aligning mechanisms 6. The aligning mechanisms 6 are constituted so that the shaft 4 and the drum 7 are integrated by freely slidably fitting plural divided aligning brackets 8 in a circumferential direction to the side plates 5 in the radial direction and engaging the outside circumferential parts of the respective brackets 8 in a level difference part formed at the inside circumferential surface of the drum 7 in the cylindrical shaft direction. The respective brackets 8 are independently slid in the radial direction of the plate 5 and fixed.