Electrographic printing device with a sensor for detecting slipping

摘要

An electrographic printing device has at least one printing unit with a toner image carrier. A printing device for producing a toner image prints at least one mark on a photoconductor belt. The toner contained on the photoconductor belt is transferred to a transfer belt at a first transfer point and transferred from said transfer belt to a strip-shaped support material at a second transfer point. A sensor situated on the transfer belt detects the passage of the mark and a control unit determines the time that has elapsed between the time of printing and the time at which the mark is detected and controls the transportation of the strip-shaped support material accordingly.