Transparencies - Epson EPL-1220 Reference Manual

Transparencies

You can use overhead projector transparencies and adhesive
drafting film if they are made for use with plain-paper copiers or
laser printers. Use the MP tray to print on these materials.
On Windows
When printing on transparencies, be sure to select Transparency
from the Paper Type drop down list on the printer driver's Basic
Settings.
Chapter 2 Paper Handling 37