Brother MFC-J5910DW Basic User's Manual page 31

If you have problems printing on
envelopes with the flap on the short edge,
try the following:
a
Open the envelope flap.
b
Put the envelope into the paper tray with
the address side down and the flap
positioned as shown in the illustration.
c
Select Reverse Print in the printer
driver's dialog box, and then adjust the
size and margin in your application.
uuSoftware User's Guide: Printing
®
(Windows )
uuSoftware User's Guide: Printing and
Faxing (Macintosh)
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