FIELD: image forming devices.
SUBSTANCE: invention relates to a developing device used in an electrophotographic image forming device, and to 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, a developing roller is supported in the housing with possibility of rotation in order to be able to rotate about the axis L1, developer supply roller, removing developer from surface of developing roll and supplying developer to surface of developing roller, and coupling element having axis L2, around which coupling element can rotate, and a free end portion for receiving the rotary force, the free end portion includes at least two projections which are at least partially outside the housing, each of at least two projections is open for axis L2 and has inclined surface relative to plane perpendicular to axis L2, clutch element is functionally connected to developing roller and developer supply roller in order to transmit rotary force to developing roller and developer supply roller, wherein the clutch member is movable between (i) a first position in which the clutch member axis L2 is substantially parallel and offset from the developing roller axis L1 so that the axis L2 does not pass through the developing roller, (ii) the second position, in which coupling element axis L2 is inclined relative to position of axis L2, when coupling element is in first position, and (iii) third position, in which axis L2 of coupling element is inclined relative to position of axis L2, when element of coupling is in first position in direction opposite direction of coupling element, inclined in 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.
46 cl, 78 dwg
