Method to operate an inkjet printer with at least two printing stations, and inkjet printer with two printing stations

A method to operate an inkjet printer with at least one first and one second printing station to print to a continuous recording medium, comprising the steps of:

• providing the respective printing stations with at least multiple print heads and providing the recording medium directed first along the first printing station and subsequently along the second printing station;
• also providing a drying device and drying the recording medium that is printed to in the first printing station with the drying device in a region between the first and second printing stations;
• and
• after a halt of the recording medium which is equal to or greater than a predetermined duration, removing the print heads of the second printing station out of a printing position from the transport path into a park position, said predetermined duration being dependent upon when an unacceptable wave formation would be created in the recording medium based on exposure of a portion of the recording medium to the drying device during the halt, and after the startup only directing the print heads back again into the printing position if a segment of the recording medium that was located in a region before the drying device during the halt has passed the print heads of the second printing station.