Canon Satera LBP-3700 User Manual page 54

5
Loosen any stiff corners of the envelopes and flatten curls as
shown in the figure.
6
Align the edges of the envelopes on a flat surface.
7
Gently load the stack of postcards with the address side
facing up until it touches the back of the multi-purpose tray as
shown in the figure.
Paper limit mark
53