Loading Envelopes
You can load up to 10 envelopes at a time, flap edge first and printable side up. Place the envelopes against the right edge of the sheet feeder, behind the tab. Press the locking tab on the left edge guide and slide it against the envelopes.
Load with the printable side up
Before you print, make sure you choose the correct envelope size as the Paper Size setting. See page 12 (Windows) or page page 14 (Macintosh) for more information.
For best results, press each envelope flat before loading it, or load one envelope at a time.
Printing From Start to Finish 9