Abstract: A replaceable unit for an electrophotographic image forming device according to one embodiment includes a body having a toner reservoir containing toner and a non-volatile memory device containing a table having a plurality of toner feed rates, each toner feed rate corresponds to the number of 1/1652 of a rotation a drive element turns to move one gram of toner out the outlet port at a predetermined amount of toner in the reservoir.

Abstract: The present application includes embodiments of a connector in an image forming device that establishes an electrical connection with a cartridge. The connector may include an electrical contact that is able to rotate in a first direction when in contact with the cartridge during a first amount insertion of the cartridge into the image forming device. The electrical contact may be adapted to stop rotating after the cartridge is inserted the first amount. As a result, the electrical connector may slide across the surface of the cartridge during additional insertion. The sliding motion may scrape off an oxidation or contamination layer thus providing a reliable electrical contact between the connector and the cartridge.