Canon PIXMA iP 3300 User Manual page 34

Important
Envelopes may not be fed properly if the Paper Support is
extended.
2
Load the envelope against the Cover Guide (the right side
of the Paper Support).
Load with the front face UP and the rear flaps DOWN on the left.
A maximum of 10 envelopes can be loaded at once.
*1 Printing orientation
*2
Make sure the flaps are folded.
Important
Make sure that the Cover Guide is set upright.
3
Pinch the Paper Guide and slide it against the left side of
the envelope.
4
Set the Paper Thickness Lever to the right.
5
In the printer driver, select Envelope in Media Type, and
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