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 (203 × 254 mm), or custom-size paper, or for envelopes. The photo tray is for 4 × 6-inch (102 × 152 mm) or 5 × 7-inch (127 × 178 mm) photo paper.