Canon LBP 2900I User Manual page 80

2
Display the [Page Setup] sheet, then set the [Page Size]
setting to the size of the document that you created in the
application.
NOTE
If you set the page size to any of [Envelope DL], [Envelope COM10], [Envelope
C5], or [Envelope Monarch], the following message appears and the appropriate
paper type is automatically selected.
Printing on Envelopes
2
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