Disposable loading units configured for mounting to a robotic arm for performing at least one surgical task are presented. The gathering plate has a notch to collect the cooling air at a lampwick, a welding point of the lamp, andor any high temperature position of the lamp. The toner electric field transport body includes a transport wiring substrate and a transport-substrate support member. Second magnet magnetized in a radius direction is rigidly mounted to second rotor engaging with second gear.