HP Designjet 2500.3500cp Printer series - Manual (Page 238)

Troubleshooting
Solving Image-Quality Problems
11-18
Nozzles misdirected
If all the stepped lines are visible in the top pattern, then all the printhead nozzles
are printing. However the nozzles could still be misdirected, possibly due to some
dried ink around the nozzles, as shown in the following example:
There are two ways to see this problem (see Example E ), it is easier to see the
misalignment from the second check.
1 In the top pattern, marked with numbers, if the diagonally stepped lines are not
equally positioned in every step it indicates that this specific nozzle(s) may be
misdirected.
2 Below the numbered pattern there is a set of horizontal straight lines. When one or
more nozzles are misdirected there will be unequal spaces between the
corresponding lines.
Theoretical Ink Direction Misdirected Ink Direction
Dried Ink
10
70
130
190
20
80
140
200