Make sure that tray 1 is in place.
Decrease the print density setting through
HP ToolboxFX or the embedded Web server. This
decreases the amount of background shading. See
Change the media to a lighter basis weight. See
Supported paper and other media
for more information.
Check the printer's environment. Very dry (low humidity)
conditions can increase the amount of background
Install a new HP print cartridge. See
Replace the print