Canon BJC-4300 Series User Manual page 40

Make sure the
paper support is
raised, and the
paper output
tray is extended.
3
Prepare the
envelopes.
Arrange the stack of envelopes on a firm surface and press down firmly on the
edges to make the folds crisp.
Press all the way around the envelopes to remove any curls and expel air from
inside the envelopes.
Make sure any curls are removed from the flap of each envelope.
4300 Chapter 3 Page 15