Brother MFC-J2340DW Online User's Manual page 48

4. Load up to 10 envelopes in the paper tray with the printing surface face down. Loading more than 10
envelopes may cause paper jams.
5. Gently press and slide the paper width guides (1) and paper length guide (2) to fit the size of the envelopes.
Make sure the envelopes are flat in the tray.
1
IMPORTANT
If envelopes are multi-feeding, load one envelope in the paper tray at a time.
If you are using envelopes that are longer than the tray length, such as Com-10 envelopes, extend the tray
as follows, and then load the envelopes.
Rest the tray on a flat surface. Push the green slider to the left and then extend the tray until it locks into
place.
2
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