User Guide

Correcting print quality and copy quality problems
This section helps to define print quality problems and how to correct them. Often print quality
problems can be handled easily by making sure that the MFP is properly maintained, using print
media that meets HP specifications, or running a cleaning page.
Print quality problems associated with media
Some print quality problems arise from use of inappropriate media.
●
Use paper that meets HP paper specifications. See
Media specifications on page 18.
●
The surface of the media is too smooth. Use media that meets HP paper specifications. See
Media specifications on page 18.
●
The printer driver setting might be incorrect. Be sure that you have selected the correct driver
setting for the paper that you are using.
●
The print mode might be set incorrectly, or the paper might not meet recommended
specifications. For more information, see
Media specifications on page 18.
● The transparencies you are using are not designed for proper toner adhesion. Use only
transparencies designed for HP Color LaserJet printers.
●
The moisture content of the paper is uneven, too high, or too low. Use paper from a different
source or from an unopened ream of paper.
●
Some areas of the paper reject toner. Use paper from a different source or from an unopened
ream of paper.
●
The letterhead you are using is printed on rough paper. Use a smoother, xerographic paper. If
this solves your problem, consult with the printer of your letterhead to verify that the paper used
meets the specifications for this MFP. See
Media specifications on page 18.
●
The media sensing feature might not be selected. Select the feature at the control panel.
Overhead transparency defects
Overhead transparencies might display any of the image quality problems that any other type of
media could display, as well as defects specific to transparencies. In addition, because
transparencies are pliable while in the print path, they are subject to being marked by the media-
handling components.
NOTE Allow transparencies to cool at least 30 seconds before handling them.
●
On the printer driver’s Paper tab, select Transparency as the media type. Also, make sure that
the tray is correctly configured for transparencies.
●
Check that the transparencies meet the specifications for this MFP. See
Media specifications
on page 18.
●
Handle transparencies by the edges. Skin oil on the surface of transparencies can cause spots
and smudges.
●
Small, random dark areas on the trailing edge of solid fill pages might be caused by
transparencies sticking together in the output bin. Try printing the job in smaller batches.
554 Chapter 7 Troubleshooting ENWW