Epson EPL-8000 User Manual page 118

Using the Optional Lower Paper Cassette
2. Slide the paper guides open, as shown below.
3. Open the back cover on the paper cassette. Then grasp the rear
green paper guide and slide it all the way to the back.
4. Take a stack of paper and fan it thoroughly. Tap the edges of
the paper on a flat surface to even up the stack.
4-12 Paper Handling