Patent ID: 7761025
Filing Date: 2010-07-20
Classification: G03G

Abstract:
1. A cartridge attachable to and detachable from a main body of an image forming apparatus comprising: a developer roller configured to face a photosensitive member; a frame including the developer roller and in contact with an urging unit, wherein the urging unit is configured to urge the developer roller towards the photosensitive member, further wherein the urging unit is configured to transfer a voltage from a power supply unit to the developer roller; a cartridge electrode capable of connection to a main body electrode, wherein the main body electrode is connected to the power supply unit, the cartridge electrode is electrically coupled with the developer roller, and at least one of the main body electrode and the cartridge electrode includes the urging unit; and a protrusion extending outward in an axis direction of the developer roller from side walls of the frame, positioned on the side walls of the frame, and including the cartridge electrode.