Epson 1500 - Manual (Page 51)

6. Make sure the ON LINE light is on; then you can send data
to the printer from your computer.
When you are finished feeding single sheets, open the paper
cover, readjust the paper guides, and replace the stack of
letter-size paper in the paper bin. If necessary, reset the paper
path selector on the top left corner of the printer to the
face-down position.
Loading envelopes, /labels, transparencies, and heavy
paper
Use only labels and overhead projector transparencies designed
to be used with laser printers or plain-paper copiers. Since
envelopes, labels, transparencies, and heavy paper must be fed
through the printer one sheet at a time, read this section and
then see “Loading single sheets” discussed earlier in this
section.
Note:
If you feed envelopes, labels, transparencies, and heavy paper, you
should set the paper feed selector to the face-up position. If you feed
single sheets regularly you may want to install the optional face-up
paper tray. See Chapter 5, “Options.”
Paper Handling 2-5