HP DesignJet Z2100 GP 24 User Manual

Whenever you notice this problem, cancel the printing job immediately. Press the Cancel key and also
cancel the job from your computer application. Soaked paper can damage the printheads.
Try the following suggestions to avoid this problem:
1.Check that the paper type you have loaded corresponds to the paper type selected in the front
panel and in your software. To check on the front panel, use the View loaded paper key.
2.Use a recommended paper type (see 
Order paper on page 104) and the correct print...

Edges of objects are darker than expected
If edges of objects seem darker than expected, and you have already set the print-quality slider to
Quality in the driver dialog (Mac OS Print dialog), select the custom print-quality options, and try setting
the quality level to Normal. See 
Printing on page 41.
Bronzing
If you are printing on photo paper with gray and black ink only, and you experience a gloss differential
problem when fluorescent light is directly reflected towards you from the print,...

White spots on the print
You may notice white spots on the print. This is probably due to paper fibers, dust, or loose coating
material. To avoid this problem:
1.Try cleaning the paper manually with a brush before printing, to remove any loose fibers or particles.
2.Always keep the cover of your printer closed.
3.Protect your paper rolls and sheets by storing them in bags or boxes.
Colors are inaccurate
If the colors of your print do not match your expectations, try the following:
1.Check that the paper...

If you have to use such files, try to ensure that the EPS, PDF, or grayscale images are already in the
same color space that you intend to use later on in Adobe InDesign or QuarkXPress. For instance, if
your final goal is to print the job in a press that follows the SWOP standard, convert the image into SWOP
when you create it.
The image is incomplete (clipped at the bottom)
●Did you press Cancel before all the data were received by the printer? If so, you have ended the
data transmission and will have...

the resolution of such images automatically. You can find this option in the Advanced tab, under
Document Options > Printer Features.
Some objects are missing from the printed image
Large quantities of data may be necessary to print a high-quality large-format print job, and in some
specific workflows there may be issues that can lead to some objects missing from the output. Here are
some recommendations for the use of the Windows driver dialog in these cases.
●In the Advanced tab, select Document...

Please look carefully at the print. The names of the colors are shown above the rectangles and in the
center of the patterns of dashes.
First look at the upper part of the print (part 1). Each colored rectangle should be a uniform color without
any horizontal lines across it.
Then look at the bottom part of the print (part 2). For each individual colored pattern, check that most
of the dashes are present.
If you see horizontal lines in part 1 and also missing dashes in part 2 for the same color, the...

Corrective action
1.Clean any faulty printheads (see Clean the printheads on page 141). Then reprint the Image
Diagnostics Print to see whether the problem has been solved.
2.If the problem remains, clean the printheads again, and reprint the Image Diagnostics Print to see
whether the problem has been solved.
3.If the problem remains, consider cleaning your printheads manually (see 
Clean the printheads
on page 141). You could also try reprinting your current print job, in case it now prints...

138 Chapter 12   Troubleshooting print-quality issues ENWW
Troubleshooting print-
quality issues
 

13 Troubleshooting ink cartridge and
printhead issues
●Cannot insert an ink cartridge
●
Ink cartridge status messages
●
Cannot insert a printhead
●
The front-panel display recommends reseating or replacing a printhead
●
Clean the printheads
●
Clean the printhead drop detector
●
Align the printheads
●
Printhead status messages
ENWW139
Troubleshooting ink
cartridge and printhead
issues
 

Cannot insert an ink cartridge
1.Check that you have the correct type of cartridge (model number).
2.Check that the colored label on the cartridge is the same color as the label on the slot.
3.Check that the cartridge is correctly oriented, with the letter or letters marking the cartridge label
right-side up and readable.
CAUTIONNever clean inside the ink cartridge slots.
Ink cartridge status messages
These are the possible ink cartridge status messages:
●OK: the cartridge is working normally, with no...