HP Designjet 4000 Printer series - Manual (Page 194)

The problem is solid bands or lines printed over the
image
This kind of problem can show itself in several different ways, illustrated below in
magenta:
1.
A thick colored band
2. Thinner colored bands
3. Discontinuous colored blocks
4. Thin lines
In each case the recommended procedure is as follows:
1.
Clean the electrical connections of the printhead that seems to be responsible (in
this example, the magenta printhead). See “How do I clean a printhead's
electrical connections?” on page 113.
2. Clean the printheads. See “How do I recover (clean) the printheads?” on page 113.
3. Reprint your image with the same settings as before.
4. If the problem persists, replace the printhead that seems to be causing the
problem. If you are not sure which printhead is responsible, use the Image
Diagnostics Print to identify it. See “How do I use the Image Diagnostics
Print?” on page 175.
Chapter 13
192
The
problem
is print
quality