Access the IJ Cloud Printing Center on your printer. The steps to do this may vary depending on your printer model. For example, on some models, such as the PIXMA TR8520 , select the Cloud
When you print documents. If your printer has more than one feed source, you are able to specify the paper size you want to print on if you have different sizes registered for each paper source. For example, the PIXMA TR8520 with 4" x 6" paper registered in the rear tray.