Toner cartridge with locating on photoconductor shaft

1. A toner cartridge for an imaging apparatus comprisinga toner hopper and a rotatable developer roller which receives toner in controlled amounts from said toner hopper mounted together as a first unitary assembly,a rotatable photosensitive roller having a central shaft, a cleaner chamber for cleaning untransfered toner from said photosensitive roller, and a cover member extending around and above said hopper mounted together as a second unitary assembly,a resilient member connected between said first unitary assembly and said second unitary assembly, to pull said developer roller and said photosensitive roller into contact,locating surfaces on opposite sides of said cartridge, said locating surfaces each comprising,said central shaft of said photosensitive roller extending so that said central shaft is unobstructed for serving as a vertical and front to rear locator,an elongated surface in the center of said cartridge having an upper surface unobstructed for receiving downward pressing members from said imaging apparatus, anda flat ledge on a side of said hopper unobstructed for resting on a roller member in said imaging apparatus.