Epson EPL-N7000 Reference Manual page 44

The following table shows important settings you have to make
when using envelopes.
MP Tray Size setting in the
Tray Menu
Printer driver settings
Please note the following tips for handling envelopes:
Load envelopes with the short edge first and the printable
surface facing up, as shown below.
Do not use an envelope that has glue or tape on it.
Mon, C10, DL, C5, C6, IB5
Paper Size: Mon, C10, DL, C5, C6, IB5
Paper Source: MP Tray
Paper Type: Thick
Paper Handling
2
2
2
2
2
2
2
2
2
2
2
2
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