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 in order to be able to rotate about axis L1, developer supply roller, removing developer from surface of developing roll and supplying developer to surface of developing roll, first gear functionally connected to developing roller, second gear meshed with first gear, third gear functionally connected to the developer supply roller, and coupling element, functionally connected to second gear, coupling element has axis L2, around which the coupling member can rotate, and the free end portion for receiving the rotary force, the free 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, clutch element is functionally connected to the developing roller through the first and second gears in order to transmit the pivoting force to the developing roller, and is functionally connected to the developing roller through the third gear in order to transmit the pivoting force to the 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, (ii) a 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 the clutch element is in the first position in the direction opposite to the coupling element direction, 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.
42 cl, 78 dwg
