Start your CD labeling program and make your CDR design. When you are ready to print, find and open printer properties - or printer settings - or printer setup - whatever your labeling program offers. In any case, you must get to Canon's printer settings. In first tab (Main) under "Media type" select "Printable disc (recommended)".

You will automatically get a notice that paper source has been changed to Disc Tray

Then click "Page Setup" and under "Page Size" select "CD-R Tray B". Click OK to save settings.

That's it. What you must do now is insert blank Printable CDR and print your design.

Easy, huh?