HP (Hewlett-Packard) 9800 Series Printer User Manual


 
Adjusting the Print Contrast
You may need to adjust the print contrast if the printing is too light
or too dark. You may need to increase the print contrast for
linerless supplies. Having the correct print contrast is important
because it affects how well your bar codes scan and how long
your printhead lasts.
Using a thin screwdriver, turn contrast knob clockwise for darker
print; turn counter-clockwise for lighter print.
You only have to turn the contrast
adjuster slightly.
If you set the contrast online, this contrast
setting is added to it.
Contrast Knob
Care and Maintenance 8-7