Epson Stylus Pro 4400 Reference Manual page 288

❏ Paper with a thickness between 0.08 and 1.6 mm can be set in the
landscape position. However, always set recycled or plain paper in
the portrait position, regardless of the thickness.
1. Make sure the printer is on and in the READY state.
2. Press the Paper Source
3. Move the paper lever to the released position.
4. Open the top cover.
288
Paper Handling
button to select Sheet
.