In this printer, envelopes are loaded in the rear tray.
You place them printable side upward.
The short edge of the envelope faces into the printer.
The flap should be downward (of course) and to the left also. To your left as you face toward the printer, that is.
This shows how they go into the printer's rear tray:
Slide paper guides up against the edges of the envelope(s), but not too tightly.
Go to the printer's own control panel. Go to
and then to
and choose the envelope size you just loaded into the printer.
For a fully printable format, but with a lot of extraneous matter for other types of paper than envelopes, see this FAQ page:
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