Abstract: In a copying apparatus equipped with a sorter having a bin unit slidably mounted on the main frame and driven up and down by a vertically supported feed screw, heavy loading of the bin with multiple copies throws the same off balance resulting in strain on the feed screw unit and producing unwanted vibrations. By connecting the bin to the feed screw through an elastically supported nut and positively slidably guiding the movement of the nut in a vertical guide parallel to the feed screw, unwanted vibrations and strains on the feed screw connection are avoided.

Abstract: A method and apparatus for controlling a copying machine of the type in which a toner image bearing member is passed between heating and pressure rollers for thermally fixing the toner image on such member, in which the rollers are rotated under low pressure by a reversible sub-motor; upon initiating a copying action under high pressure a main motor is used to drive both the rollers and the paper feeding mechanism, while the sub-motor is reversed to actuate a high-pressure forming mechanism. At the end of the copying action, the main motor is cut out and the sub-motor again reversed to its original direction to rotate the rollers under low pressure; rotation of the rollers by the sub-motor may be at a lower speed than when they are driven by the main motor.