Canon Satera LBP3900 User Manual page 46

● Loosen any stiff corners of the envelopes and flatten curls as shown
in the figure.
● Align the edges of the envelopes on a flat surface.
6
Gently load the stack of envelopes with the printing side
facing up until it touches the back of the multi-purpose tray as
shown in the figure.
Be sure that the paper stack is loaded under the load limit guides (A).
(A)
45