Load Paper Before you copy or print, load paper for the type of printing you will do. The main tray is for letter-size, A4, legal-size, 8 × 10-inch, or custom-size paper, or for envelopes. The photo tray is for 4 × 6-inch or 5 × 7-inch photo paper. Load Paper in the Main Tray Load Paper in the Photo Tray Load Envelopes General Paper Information