Start [Printer Setup Utility].
Under Mac OS X 10.5, start [System Preferences] and click [Print & FAX].
Under Mac OS X 10.3, click [Print & FAX] in [System Preferences], and then click [Set Up Printers...].
Under Mac OS X 10.2.8, start [Print Center].
Double-click the name of this printer.
Select the name of the job you want to cancel, and then click the Delete icon.
If the printer is shared by multiple computers, be careful not to cancel a print job of other user.
You cannot stop printing data that has already been processed. For this reason, printing may continue for a few pages after you cancel printing.
To stop a large data size print job may take a while.