The utility model relates to an electrostatic printing technical field especially relates to a drive assembly, adopt processing box and image forming device of this subassembly. Drive assembly can follow the image and embark on journey device image device and receive rotary power, and drive assembly includes that power receives mouthful and wheel hub, power receives the mouth to be provided with a pair of jack catch, the jack catch distribute week that power received mouthful upwards, power receives mouthful to drive the power transmission to the wheel hub in with what follow that the image forming device driver part receives, drive assembly still includes control mechanism, control mechanism is including compeling to push away parts and end cover, power receives the mouth to pass end cover and wheel hub in proper order, power receives mouthful to go up along its radial orientation and is provided with protruded structure, compels to push away parts and can compel to push away protruded structure, makes a pair of jack catch rotate and stops to put in avoid giving way. Image forming device handles the box including drive assembly. Image forming device is including handling the box. Drive assembly that this application provided and, the processing box and the image forming device that adopt this subassembly effectively avoid loading and unloading the in -process and is interfered by the jack catch.