HP Color LaserJet CM4730 Multifunction Printer series - Manual (Page 279)

Correct print quality and copy quality problems
This section helps you define print quality problems and what to do 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.
● The surface of the media is too smooth. Use media that meets HP paper specifications.
● 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.
● 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.
Color printing problems
Printout color error
Table 16-2 Printing black instead of color
cause and solution
Cause Solution
Color mode is not selected in the software program or printer
driver. Select Color mode instead of Grayscale or Monochrome
mode in the software program or printer driver.
The correct printer driver is not selected in your software
program. Select the correct printer driver.
No color appears on the configuration page. Consult your service representative.
ENWW Correct print quality and copy quality problems 263