Epson EPL-N3000 Reference Manual page 42

When printed envelopes are wrinkled, open cover B and push up the
form feed pressure change levers at both sides of the fuser unit until
they are in the vertical position. It may reduce the wrinkles in the
envelopes. When using paper other than envelopes, be sure to push
the levers back down.
Warning:
w
Unless specifically instructed in this guide, be careful not to
touch the fuser, which is marked CAUTION HOT
SURFACE, or the surrounding areas. If the printer has been
in use, the fuser and the surrounding areas may be very hot.
If you must touch one of these areas, wait 40 minutes to allow
the heat to subside before doing so.
The following table shows important settings you have to make
when using envelopes.
Paper Source
MP Tray Size setting in the
Tray Menu
MP tray (up to 10 envelopes), standard lower
cassette, optional lower cassette (up to 80
envelopes)
Mon, C10, DL, C5, C6, IB5
Paper Handling
2
2
2
2
2
2
2
2
2
2
2
2
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