HP LaserJet Pro 4001dw Monochrome Wireless Printer - Manual (Page 24)

6. Press down on the tab on the right paper guide, and then adjust the paper guides so that they
lightly touch the paper stack but do not bend the paper.
7. At the computer, begin the printing process from the software application. Make sure that the
driver is set to the correct paper type and size for the paper being printed from the tray.
Tray 1 paper orientation
When using paper that requires a specific orientation, load it according to the information in the
following table.
Table 2-1 Tray 1 paper orientation
Paper type Output How to load paper
Letterhead or preprinted 1-sided printing Face-up
Top edge leading into the printer
123
Tray 1 paper orientation 15