Check for and clear any paper jams. For more information, see Paper jam in the printer.
Verify that the specialty media is loaded correctly. For more information, see Loading various paper types.
Try loading one page, envelope, or sheet of specialty media at a time.
From the Finder desktop, choose Applications Utilities
Print Center/Printer Setup Utility.
From the Printer List dialog, select your printer.
Click the Make Default icon.
From the Finder desktop, choose Applications Utilities
Print Center/Printer Setup Utility.
From the list of printers, double-click the name of your printer.
From the printer pop-up menu, click Start Jobs if you want to resume all print jobs in the queue; if you want to resume a particular print job, select the document name, and then click Resume.