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Print Quality
HP Designjet 4000/4020 Printer Series Service Manual
Troubleshooting Print Quality Problems
Horizontal Lines Across the Image (Banding)
Description of problem
When you look at the image you have printed, there are horizontal lines
across the image. Shown below is an example of what you might see if you
have this problem:
Corrective Action
1 Check that the appropriate print quality settings are being used and reprint
the image.
Refer to Page 6-3 for further information on choosing the correct
Print Quality settings
.
2 If not already done so, recover the Printheads (Ink Menu/Printheads/
Recover Printheads) and reprint the image with the same settings as before
.
3 Try using a heavier paper type. When printing dense colors, it is
recommended to use HP Heavyweight Coated Paper or HP Productivity
Gloss.
4 If the problem continues, Refer to the "Advanced Banding Troubleshooting
for Experts" section on
Page 6-17
to troubleshoot the problem further.
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