ROTATION FORCE TRANSMITTING PART Russian patent published in 2017 - IPC G03G21/18 

FIELD: image forming devices.

SUBSTANCE: invention relates to rotation force transmitting part, for electrophotographic process cartridge, electrophotographic images forming device, in which process cartridge can be installed with possibility of its replacement, and electrophotographic photosensitive drum unit. Disclosed group of inventions includes drum flanges and photosensitive drums for rotary force reception transferred from electrophotographic image forming device drive shaft via rotation force transmitting connecting element spherical drive part pin. At that, drum flange mounted on photosensitive cylinder one end for reception of rotary force, transmitted from electrophotographic image forming device drive shaft to photosensitive cylinder via rotation force transmitting connecting element spherical drive part pin comprises: pair of opposite grooves provided on drum flange inner periphery to accommodate rotation force transmitting pin, recess provided between said pair of opposite grooves to accommodate spherical drive part and supporting connecting element with possibility of rotation, first limiting part provided on said recess one end to limit spherical drive part displacement in drum flange axial direction and second limiting part provided on recess other end to limit spherical drive part displacement in drum flange axial direction, wherein second limiting part forms hole allowing for connection element part projection and connecting element inclination.

EFFECT: technical result consists in enabling faster maintenance of electrophotographic image forming device.

42 cl, 112 dwg