HP Color LaserJet Managed MFP E77800 Series, HP LaserJet Managed MFP E72500 Series - User Guide

Tray Envelope size How to load envelopes
Tray 1 Envelope #9, Envelope #10, Envelope
Monarch, Envelope DL, Envelope B5,
Envelope C5 (wallet), Envelope C6
Face-down
Top edge toward the front of the printer
Envelope B5, Envelope C5 (pocket) Face-down
Bottom edge leading into the printer; top
ap open
ENWW Load and print envelopes 37