This is the case when printing in duplex with the short edge Binding selected, as the output is best suited for use in a binder that also has the binding along the short edge. Conversely, when using a binder with the binding along the long edge, you may wish to select the long edge Binding.
To change the default setting to long edge Binding:
1. Choose Print from the File menu; the Print dialog appears.
2. Scroll the pop-up list to Layout.
3. In the Layout panel enable"Print on Both Sides".
4. Click on the long edge Binding which is the one on the right.
5. Click Save Settings.
Should you wish to make other panels' settings the default, that are persistent for each job you send to this Desktop Printer, merely select your preferred setting then select "Save Settings" just as above.
Note that duplex printing is a selectable option in the Print dialog for printers such as the Apple LaserWriter 12/640 and LaserWriter 8500 having the optional duplex printing unit for printing on both sides of the paper.