DRUM UNIT, CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE AND COUPLING Russian patent published in 2019 - IPC G03G21/16 

FIELD: photography.

SUBSTANCE: present invention relates to an electrophotographic image forming apparatus using an electrophotographic process, a drum assembly, a cartridge, a clutch, etc., used for the electrophotographic image forming device. Disclosed group of inventions includes a drum assembly, removably mounted in the main assembly of the electrophotographic image forming device, an electrophotographic image forming device, comprising a cartridge and a main assembly of the electrophotographic image forming device, in which said cartridge, cartridge and clutch can be installed, capable of engaging with drive shaft provided in main assembly of electrophotographic image forming device. At that, the coupling comprises: driving force perception section configured to enter the slot to receive the driving force for rotation of the rotating member having the developer transfer surface; and supporting portion, movably supporting said driving force perception portion, wherein said supporting portion includes a first elongated portion and a second elongated portion extending at least in axial direction of said rotary member, and wherein said first elongated portion and said second elongated portion extend in directions differing from each other in axial direction.

EFFECT: technical result consists in providing a photosensitive drum assembly, detachably mounted in the main assembly of the electrophotographic image forming device.

196 cl, 65 dwg