| 摘要 |
PROBLEM TO BE SOLVED: To surely prevent the uneven rotation of a photoreceptor drum while absorbing vibration generated by a motor by providing a motor mounting base plate at a frame part pivotally supporting the drum shaft of the photoreceptor drum through a vibration-proof member and mounting plural motors on the motor mounting base plate. SOLUTION: The photoreceptor drums 41C to 41K are housed in a frame 64 on the carrying path of a carrying belt 60, and pivotally supported so that a distance between the shaft centers of the adjacent drums may be constant. The motor shafts of stepping motors 45C to 45K are coupled with the drum shafts of the drums 41C to 41K from the outside of the main body frame 64 through couplings 47C to 47K. A housing for the motors 45C to 45K is mounted and fixed on a motor base plate 46 having nearly the same length as the length of the frame 64 by machine screws. Four corners of the base plate 46 are fixed on the frame 64 side by the machine screws 461 to 462 through columnar vibration-proof members 48 to 50 made of synthetic rubber. |
