Brother DCP-9270CDN Basic User's Manual page 22

Chapter 2
Printing on envelopes and thick paper
from the MP tray
Before loading, press the corners and sides
of the envelopes to make them as flat as
possible.
a
Open the MP tray and lower it gently.
14
b
Pull out the MP tray support and unfold
the flap (1).
2
1
c
Lift up the support flap to prevent
envelopes or sheets of thick paper from
sliding off the face-down output tray. If
the support flap is closed you should
remove each envelope as soon as it
comes out of the machine.