Canon imageCLASS MF3010 VP Multifunction Monochrome Laser Printer - Manual (Page 53)

(3) Loosen any stiff corners of the envelopes and flatten curls as shown in the figure.
(4) Align the edges of the envelopes on a flat surface.
(5) Gently load the envelopes into the paper cassette with the print side face up, until the edge of the envelope
stack meets the back of the paper cassette.
3
Adjust the paper guides to the paper width without space.
IMPORTANT
Adjust the paper guides to the paper width without space.
If the paper guides are too loose or too tight, this may result in misfeeds or paper jams.
Basic Operation
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