This printer turned out to o the job very reliably, but...

how to solve the time-consuming error message during attempted printing: ' Preparing Data'  or
                                                                                                                            'der Drucker reagiert nicht auf Warteschleifen' or
                                                                                                                                      'Daten werden vorbereitet'
1st option: switch off printer and wait 5 minutes.
2nd option:  use of the old LaserWriter 7.53 printer driver is a little slow in processing and offers fewer options compared with later drivers, but still runs under system 9 (Powerbook G4) and eliminates the above-mentioned error messages.