Epson 5000 - Manual (Page 61)

4. Move the paper-release lever to the push-tractor position.
The printer automatically advances the continuous paper to
the loading position when it receives data.
Printing on Special Paper
In addition to printing on single sheets and continuous paper,
your printer can print on a wide variety of other paper types,
such as envelopes, labels, and multi-part forms. Before printing
on special types of paper, you need to change the
paper-thickness setting.
Caution:
When printing on labels or multi-part forms, make sure
that your software settings keep the printing entirely
within the printable area.
Always return the paper-thickness lever to position 0 when
you return to printing on ordinary paper.
Paper Handling 2-23