摘要:
A photoreceptor belt control apparatus for a printer designed to correct lateral traveling of a photoreceptor belt traveling by being supported by rollers rotatably installed on a belt frame (100), and/or to control tension for the photoreceptor belt. The apparatus includes an auxiliary frame comprising a pair of auxiliary frame members (51, 55) slidably and pivotally installed on the belt frame (100), a steering roller (61) whose ends are rotatably installed respectively on the auxiliary frame, the steering roller (61) rotating in contact with the photoreceptor belt, a shaft (65) whose ends are rotatably installed on the belt frame (100), a cam unit (70) installed on at least one end of the shaft (65) for controlling the inclination of the steering roller (61) by pivoting each of the auxiliary frame members (51, 55) according to the rotation position of the shaft (65), and a tension control unit (80) for controlling tension to be applied to the photoreceptor belt by sliding the pair of auxiliary frame members (51, 55).