Canon imageCLASS 2200 Reference Manual page 262

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7
7-18 Envelope Feeder Attachment-B1
Place the envelopes on a clean, level surface and spread them out
by hand in the directions of the arrows.
Repeat this step five times.
IMPORTANT
•
Take particular care to spread the envelopes out in the direction they will be fed.
Hold down the four corners of the envelopes firmly, so that they and
the sealed or glued portion stay flat.