PROCESS CARTRIDGE, ELECTROPHOTOGRAPHIC IMAGING DEVICE AND ELECTROPHOTOGRAPHIC PHOTOSENSITIVE DRUM UNIT Russian patent published in 2019 - IPC G03G15/16 G03G21/18 

FIELD: image forming devices.

SUBSTANCE: present invention relates to a process cartridge, an electrophotographic image forming apparatus in which a replaceable process cartridge can be installed, and an electrophotographic photosensitive drum assembly. Claimed group contains variants of the drum units. Drum unit used in the process cartridge contains: photosensitive drum having an axis L1, and connecting element having an axis L2, and the connecting element includes a first end portion functionally connected with the photosensitive drum, and a second end portion including at least one protrusion that is open to the axis L2, and an outer surface that faces away from the first end portion, for at least part of said external surface, the maximum distance from the axis L2 to said external surface along a line perpendicular to the axis L2 decreases with increasing distance along the axis L2 from the first end portion, and wherein the connecting element is movable between (i) a first position in which the end point of said at least one protrusion is at a first distance from the photosensitive drum, when measured in the direction of the axis L1, and (ii) a second position in which the end point of said at least one protrusion is at a second distance from the photosensitive drum, as measured in the direction of the axis L1, with the first distance greater than the second distance.

EFFECT: technical result consists in creating a process cartridge capable of smoothly rotating the photosensitive drum by installing it in the main unit, not equipped with a mechanism for moving the connecting element on the side of the main unit, in the direction of center line thereof, for transferring the rotational force to the photosensitive drum by opening and closing the main unit cover.

22 cl, 112 dwg