FIELD: image forming devices.
SUBSTANCE: invention relates to a developing device used in an electrophotographic image forming device and a coupling element used in an electrophotographic image forming device. Disclosed group of inventions includes variants of cartridges of image forming device. At that, the image forming device cartridge comprises: a housing, a developer contained inside the housing, a developing roller having an axis L1, developing roll is supported in housing with possibility of rotation to be able to rotate about axis L1, developer supply roller, removing developer from surface of developing roller and supplying developer to surface of developing roller, and coupling element having axis L2, around which coupling element can rotate, coupling element includes (i) a first end portion operatively coupled to a developing roller and a developer supply roller, and (ii) a second end portion for receiving a rotary force, second end portion includes at least two projections which are at least partially located outside the housing, each of the at least two protrusions is open to the axis L2, and wherein the coupling element is movable between (i) a first position in which the axis L2 of the coupling element is substantially parallel and offset from the developing roller axis L1, (ii) a second position in which axis L2 of the coupling element is inclined relative to the position of axis L2 when the coupling element is in a first position, and (iii) the third position, in which the axis L2 of the coupling element is inclined relative to the position of the axis L2, when the coupling element is in the first position in the direction opposite to the direction of the element of the coupling, inclined in the second position.
EFFECT: providing a mechanism for moving the coupling on the side of the developing device to ensure uniform rotation of the developing roller.
38 cl, 78 dwg
