CARTRIDGE AND IMAGE FORMATION DEVICE Russian patent published in 2009 - IPC G03G21/18 G03G15/04 

FIELD: physics; photography.

SUBSTANCE: cartridge, which is detachably fitted in the main assembly of an electrophotographic image forming device, has a photosensitive drum, a developing roller and a drum unit for supporting the drum. The drum unit is positioned relative the main assembly when the cartridge is fitted into the main assembly. The device also has a developing unit, which supports the developing roller and can move towards the drum unit between the contact position, in which the developing roller and the drum touch, and the spaced position, a unit for receiving driving force of the drum, provided in the drum assembly for receiving driving force for rotating the drum from the main assembly; a moving element for moving the developing unit between the contact positiion and the spaced position, and a unit for receiving the driving force of the moving element, provided in the drum unit for receiving driving force of the moving element for moving the mobile element from the main assembly.

EFFECT: improved accuracy of positioning between a moving element for moving a developing unit and the developing unit.

12 cl, 12 dwg