Abstract: A ventilating device for ventilating a housing, includes first and second blowers, a flow chamber with an inlet opening, an outlet opening, and an equalization opening connecting the flow chamber between the inlet opening and the outlet opening with the environment, a freely movable cover element for partially covering the equalization opening in such a manner that passage of the flow is blocked in one direction but cleared in the other direction, and an ascending pipe. The elements in the ventilating device are arranged in the sequence first blower, inlet opening, flow chamber, outlet opening, second blower, and ascending pipe. The equalization opening is at least partially open at all times, so that the equalization opening displays a greater flow resistance than the inlet opening of the flow chamber.

Abstract: A device and a method for applying and fusing a toner image on a substrate is described. The device has at least one printing unit, a transport unit for transporting the substrate through a print area of the printing units and a fusing unit for fusing toner on the substrate. The transport unit has an endless transport belt which passes continuously around at least two rollers to form a transport side. The fusing unit is in a transport direction of the endless transport belt behind the at least one printing unit and has at least one microwave applicator arranged adjacently to the endless transport belt for introducing microwaves into the substrate while the latter is being transported through it. With the method, a substrate to be printed is held on an endless transport belt and moved thereon through a print area of at least one printing unit and then through a fusing unit.

Abstract: A turning unit for sheet-like substrates has at least one first turning element with a basic body having an outer, round substrate contact surface for deflecting the substrate. The deflection is from a first sheet conveying direction to a second sheet conveying direction describing a predetermined angle to the first sheet conveying direction. Furthermore, a channel structure is provided that is formed in the substrate contact surface and onto which open a plurality of gas outlet openings which are in fluid communication with a gas supply.

Abstract: A device and a method for applying and fusing a toner image on a substrate is described. The device has at least one printing unit, a transport unit for transporting the substrate through a print area of the printing units and a fusing unit for fusing toner on the substrate. The transport unit has an endless transport belt which passes continuously around at least two rollers to form a transport side. The fusing unit is in a transport direction of the endless transport belt behind the at least one printing unit and has at least one microwave applicator arranged adjacently to the endless transport belt for introducing microwaves into the substrate while the latter is being transported through it. With the method, a substrate to be printed is held on an endless transport belt and moved thereon through a print area of at least one printing unit and then through a fusing unit.

Abstract: A ventilating device for ventilating a housing, includes first and second blowers, a flow chamber with an inlet opening, an outlet opening, and an equalization opening connecting the flow chamber between the inlet opening and the outlet opening with the environment, a freely movable cover element for partially covering the equalization opening in such a manner that passage of the flow is blocked in one direction but cleared in the other direction, and an ascending pipe. The elements in the ventilating device are arranged in the sequence first blower, inlet opening, flow chamber, outlet opening, second blower, and ascending pipe. The equalization opening is at least partially open at all times, so that the equalization opening displays a greater flow resistance than the inlet opening of the flow chamber.