HP Designjet Z6100 Printer series

Image quality issues by symptom 211
Print Quality
jobs set for low-quality and high-speed. It will not occur when the custom print quality setting is set to
“best.”
• To eliminate aeroworms, select a higher IQ print setting. See Selecting Print Quality in the User’s
Guide.
CAD Lines look misaligned, images are blurred
This issue can be seen even after the customer has performed the Printhead Alignment procedure. The
misalignment is most highlighted in CAD drawings, there are double-lines and images are ‘ghosted’. See
the two examples below.
This issue can be solved by upgrading the firmware to the latest version.
Some media might deform when printing high area fill
This issue is known as PEPA: Paper Expansion Paper Advance. The quality of some images might be
reduced if you use a paper type that is unsuitable for your image. This is especially important to consider
when printing on fiber-based papers such as HP Universal Coated Paper, HP Coated Paper, HP
Heavyweight Coated Paper and HP Universal Heavyweight Coated Paper. Printing images that contain
high-saturation area fills on fiber-based papers can create unwanted wavy patterns as a result of paper
expansion. This can ultimately contribute to more severe problems. Consider using Super Heavyweight
Coated Paper and other cockle-free papers when printing high-saturation area fills
Finally, as this paper expansion is increasing when a high quantity of ink is placed at once, the HP
Designjet Z6100 might exhibit this paper expansion more than when compared to the DJ5x00 or DJ10x0
series.
Printheads fail repeatedly
If you encounter intermittent quality issues that are not solved after replacing Printheads or repeated
replacement of the same Printheads there might be a capping problem. This could be caused damage to
the Maintenance Cartridge or even the actual Carriage Assembly which is preventing the Printheads from
being correctly capped.
The Maintenance Cartridge provides the capping for all eight Printheads and contains integrated
Printhead caps, wipers, cleaners, and waste ink disposal.
The following illustration shows a the components that make up the Maintenance Cartridge.
Here the CAD drawing has the issue, the
CAD lines are misaligned and the image
looks blurred/grainy
Here the CAD drawing does not have the
issue and the drawing looks ok.