DRUM UNIT, CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE AND COUPLING Russian patent published in 2020 - IPC G03G21/16 

FIELD: image forming devices.

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 cartridge and an electrophotographic image forming device, comprising a cartridge and a main assembly of the electrophotographic image forming device, into which said cartridge can be installed. At that, the cartridge includes: a rotating element rotating with the toner transferred on its surface, and a coupling including a projection and a support section supporting the said projection with the possibility of movement, wherein said support section includes: a first elongated portion that supports said protrusion and extends to a free end of said support section, and a second elongated portion, which is connected to the first elongated portion and extends to said first elongated portion at least in axial direction of said rotary member, and wherein said first elongated portion and said second elongated portion extend in directions different from each other in axial direction, and wherein said coupling is configured to transmit driving force from said protrusion to rotary member through said supporting portion.

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

21 cl, 65 dwg