HP Color LaserJet 4700 Printer series - Manual (Page 117)

4. Adjust the side guides so that they lightly touch the paper stack but do not bend the paper.
NOTE Make sure the paper fits under the tabs on the guides and not above the load level
indicators.
Printing envelopes from Tray 1
Many types of envelopes can be printed from Tray 1. Up to 20 envelopes can be stacked in the tray.
Printing performance depends on the construction of the envelope.
In the software, set margins at least 15 mm (0.6 inches) from the edge of the envelope.
CAUTION Envelopes with clasps, snaps, windows, coated linings, exposed self-stick
adhesives, or other synthetic materials can severely damage the printer. To avoid jams and
possible printer damage, never try to print on both sides of an envelope. Before you load
envelopes, make sure they are flat, undamaged, and not stuck together. Do not use envelopes
with pressure-sensitive adhesive.
Loading envelopes into Tray 1
CAUTION To avoid jams, do not remove or insert envelopes during printing.
1. Open Tray 1.
ENWW Configuring input trays 101