Device and method for applying and fusing a toner image on a substrate

摘要

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. In the print area of the at least one printing unit, a toner image is applied to the substrate, and inside the fusing unit the toner image is fused on the substrate by heating up the toner image by use of microwaves.

主权项

1. Device for applying and fusing a toner image on a substrate having the following:
at least one printing unit for applying toner to the substrate; a transport unit for transporting the substrate through a print area of the printing unit, where the transport unit has an endless transport belt which passes continuously around at least two rollers to form a transport side on which the substrate is transported through the print area; and a fusing unit for fusing toner on the substrate and arranged in a transport direction of the endless transport belt behind the at least one printing unit, wherein
the fusing unit has at least one microwave applicator arranged adjacently to the endless transport belt for introducing microwaves into the substrate while the substrate is being transported on the endless transport belt through the microwave applicator;the fusing unit has two rollers and an endless belt entrained around the two rollers to define a contact side, the endless belt being arranged such that its contact side is directly opposite the transport side of the endless transport belt, so that the substrate with the applied toner is held in between the transport side and the contact side; andthe at least one microwave applicator is arranged such that it introduces microwaves into an area in which the endless transport belt and the endless belt are directly opposite.