Abstract: An AC corona charging arrangement includes a corona generating device connected through a capacitive connection to an AC voltage source and partially surrounded by a conductive shield connected to DC voltage source. In one embodiment the corona generating device is a wire having a diameter of about 50 microns and in another embodiment the corona generating device is a row of pins connected through corresponding capacitance to the AC voltage source. The presence of a capacitance between the AC voltage source and the corona generating device provides a curve representing the relationship between the current between the charging device and an adjacent conductive plate and the shield voltage which is concave downwardly, resulting in a high charging rate and greater uniformity of charging of a photoreceptor surface.

Abstract: An apparatus, method and printing machine that utilizes a ramped backer and/or a shock absorbing material in a cleaner subsystem to reduce or prevent photoreceptor motion quality disturbances. The shock absorbing material prevents an instantaneous high impact force between the spacer wheel and the photoreceptor backer bar that can cause photoreceptor motion quality disturbance. The ramped backer prevents the instantaneous deceleration of the spacer wheel with the backer that causes motion quality disturbance due to the shaking of the photoreceptor belt from the impact on contact. The combination of the shock absorbing material and the ramped backer create a preferred embodiment to prevent photoreceptor motion quality disturbance by the cleaner system.

Abstract: A toner cartridge is provided for dispensing toner on demand to the development station of a xerographic copier machine. The cartridge is modified so as to improve the dispensing of toner through dispensing ports located at one end of the cartridge by the provision of a relatively stiff, coiled spring element which is fixed in position adjacent the interior walls of the cartridge. As the cartridge rotates, the spring moves through the toner acting as an auger-type transport mechanism to move the toner towards the dispensing ports. The spring also serves to agitate the toner so as to make its consistency more fluid thereby aiding the augering transport motion. In one embodiment, the toner cartridge is tilted so as to utilize additional gravitational forces to assist in the toner transport towards the dispensing end.