Sheet transportation device including electromagnetic component and control method thereof

摘要

A sheet transportation device (50, 20, 30, 60, 1) includes a transportation path (500) for transportation of a sheet, a transportation unit (52, 520) for applying force to a sheet on the transportation path, and an electromagnetic component (L1) for driving the transportation unit by receiving supply of electric power. At the sheet transportation device (50, 20, 30, 60, 1), the absence/presence of a sheet is detected at a downstream side of the region where the transportation unit applies force to a sheet in the transportation path, and counter electromotive force induced in response to electric power being supplied to the electromagnetic component (L1) is supplied as the electric power for the detector.