HP Designjet 5100 Printer series - Manual (Page 86)

6-4
Troubleshooting image quality
HP Designjet 5100 printer Customer Reference Guide
printer. It should not be used to check for color consistency or accuracy.
If your printer is functioning correctly this part of the print will have no
problems. There is no banding in any of the colors.
However, if you do see problems with this print and the image quality is not
acceptable, you will need to perform some corrective actions.
Banding
Banding has occurred when you see repetitive horizontal bands within the
printed image. They can appear as light or dark bands.
Banding is caused by problems with:
„ The printhead(s)
„ Media advance
Problems with the printhead(s)
Banding caused by problems with the printhead(s) will be highlighted in the
Image Quality Print because the banding is not in all of the colors: the
colored strip that has banding was caused by the printhead of the same
color. The colored stripes are in the same order as they appear on the
printer as if you are facing it: light cyan first and black last.
For example, the image quality print shown below was printed with a printer
that has a cyan printhead problem.
Corrective action
1 Perform the Printhead recovery procedure, on page 8 if you have not already
done so
2 If there is no improvement in print quality, replace the problem printhead.
Problems with media advance
If the printer has media advance problems you will see banding in all the
colors.
For example, the Image Quality Print shown below was printed with a