HP Designjet 4000 Printer series - Manual (Page 192)

The problem is banding (horizontal lines across the
image)
If your printed image suffers from added horizontal lines as shown (the color may vary):
1. Check that you are using appropriate print quality settings. See “How do I choose
print quality settings?” on page 130.
2. If the problem persists, clean the printheads. See “How do I recover (clean) the
printheads?” on page 113.
3. Consider changing to a heavier paper type: we recommend HP Heavyweight
Coated Paper or HP Productivity Photo Gloss when printing dense colors.
4. If the problem persists, use the Image Diagnostics Print to find out more about it.
See “How do I use the Image Diagnostics Print?” on page 175.
Chapter 13
190
The
problem
is print
quality