ELECTROPHOTOGRAPHIC CONTROL SYSTEM AND IMAGE FORMATION CONTROL METHOD

PROBLEM TO BE SOLVED: To provide a system and method for controlling an image pickup device in a single-path multicolor electrophotographic printer. SOLUTION: The system has a photoreceptor belt 10 which regulates a timing aperture and moves along a path 12 of the printer, and a plurality of image pickup devices B each of which forms a latent image on the photoreceptor belt 10. The system also has a sensor, which is located adjacently to the photoreceptor belt 10, and detects the aperture when the aperture in the photoreceptor belt 10 passes through the sensor and generates a signal showing its detection. The system further has a controller 90 which generates a timing signal for each of the image pickup devices B as a function between the signal generated by the sensor and predetermined parameters.