Processing box

The utility model provides a process cartridge which can be detachably mounted in an image forming device, and the process cartridge comprises: a housing; the photosensitive drum is detachably mounted in the shell and can rotate from a rotation axis; the power receiving part is arranged at the end part of the photosensitive drum and is used for receiving a driving force from a power output part of the image forming device from the outside of the processing box so as to drive the photosensitive drum to rotate; the offset gear is arranged on the shell, and when the offset gear is installed on the image forming device, the offset gear can move from a first position to a second position and is meshed with the gear part on the power output part; in the process that the processing box is installed on the image forming device through the displaceable offset gear, direct collision between the processing box and the power output part is avoided, meanwhile, the power output part can be straightened, so that the power o