Printing machine i.e. sheet-fed printing machine, operating method, involves directing thermal air to printed substrate, controlling air flow rate and heating power and sucking air by sheet path blower

摘要

The method involves directing thermal air to a printed substrate over a nozzle of a thermal air-drying device (13) for drying the substrate. The flow rate of air through the nozzle is controlled and/or heating power of a heating device of the drying device is controlled, in a standby operation of a printing machine for controlling inadmissible temperature rise in a printing unit (10) or a lacquering tool (2) in an extension arm (3) and/or a sheet transport device (4). The air is sucked by a sheet path blower (14) positioned in an area of the arm and/or in an area of the transport device.