Reset printing system in Mac OS X 10.5


macosxhints.com – 10.5: How to reset the printing system

But these features are still here, just in new spots. To reset the printing system in Leopard, open the Print & Fax pane, then control-click in the Printers sidebar. There it is: Reset printing system. And the advanced method is available in a toolbar button, as detailed in this hint.