A winch supported cargo strap coil launching device has a telescopic cantilever beam. A force generating device is mounted on the frame generally above the enclosure. For this purpose, according to the invention, information showing that the calibration of an image forming apparatus is being executed is stored, and a job assigned to the image forming apparatus whose calibration is being executed is assigned to another image forming apparatus. A piston actuator can rotate the rotor to the armed position if the mass is disengaged and the displaceable end is disengaged.