HP Laserjet p3015 - Manual (Page 93)

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 Automatic duplex printing Envelopes
Tray 1 Face-up
Top edge leading into the product
Face-down
Bottom edge leading into the
product
Face-up
Short, postage end leading into
the product
All other trays Face-down
Top edge at the front of the tray
Face-up
Bottom edge at the front of the
tray
Print envelopes only from Tray 1.
ENWW Load trays 81