HP LaserJet P2035 - Manual (Page 46)

Load trays
Paper orientation for loading trays
If you are using paper that requires a specific orientation, load it according to the information in the
following table.
Tray Single-sided printing Envelope printing
Tray 1 Face-up
Top edge leading into the product
Front of envelope face-up
Short edge with postage leading into the
product
Tray 2 Face-down
Top edge at the front of the tray
Use only Tray 1 for printing envelopes.
36 Chapter 6 Paper and print media ENWW