Canon
How to change the paper feeding method (Mac OS X)
The printer driver can set the paper feeding either from the front feed or the auto sheet feeder.
Note: After confirming that the cable connects the printer to the computer and the printer is powered on, follow the procedures below.
1. In the File menu, select 'Print' to open the Print dialog.
2. In the Printer pop-up menu, select the printer you are using.
3. In the third pop-up menu, select 'Quality & Media'.
Note: You may need to expand the print window by clicking the down arrow as shown below to see the third menu:
4. In the Paper Source pop-up menu, select the desired paper source (either 'Rear Tray' or 'Front tray').