FIELD: photography.
SUBSTANCE: present invention relates to a developing device, a developing cartridge, rotational force transmitting part and an electrophotographic image forming device which employs a developing cartridge. Disclosed group of inventions includes cartridges, method of fitting a connecting element in frame of the cartridge, used with a cartridge, where said cartridge includes a developing roller which can rotate about axis and said connecting element is configured to take a rotary force for rotating said developing roller, as well as method of removing a connecting element with frame cartridge used with cartridge, where said cartridge includes a developing roller which can rotate about axis and said connecting element is made with possibility of perception of a rotary force for rotating said developing roller. Cartridge includes a developing roller which can rotate around axis, connecting element for force for rotating said developing roller, cylindrical element, movable supporting one end part of said connection element inside cylindrical element part to take up force on side of cylindrical element, first control part, wherein said first control part is deformed radially outward said element to allow said one end part of said connector to disengage in axial direction of said cylindrical element, and second control part for control of deformation of said first control part outside said cylindrical element in radial direction in a state in which one end of said connector is installed inside cylindrical element.
EFFECT: technical result consists in development of a developing device, developing cartridge and electrophotographic image forming apparatus used with developing device or said developing cartridge, which improves in order to prevent non-uniformity of rotation of developing roller and in main assembly mechanism for displacement of connection element of main unit to developing device.
21 cl, 31 dwg
