US Patent 7406916 Conservation of energy transfer during an emergency stop

According to an exemplary embodiment of the present invention, a method for operating a multi-unit printing arrangement, including multiple individual motors is provided. The method comprises the steps of operating the multi-unit printing arrangement, stopping the multi-unit printing operation by braking the multiple motors in stop operations, and staggering impression throw operations for individual units by a preselected time delay between commencement of each impression throw operation, a duration of the time delay between commencement of sequential impression throw off operations being selected to be of sufficient duration such that there is no overlap of large torque disturbances experienced at the multiple motors.