HP Latex 3200 Users Guide - Page 391

Thin white lines, step a to c, until you find settings that work.

Page 391 highlights

If the substrate advance is not well adjusted, particularly if it is under-advancing, a dark line can appear between passes. A clear symptom of this is when the dark lines appear across all colors, because the cause is common to all of them. To confirm it, in the Internal Print Server, select Printer > Advance Calibration to check the substrate advance. See Substrate-advance test print on page 182. You can usually correct this problem by adjusting the substrate advance compensation (see Substrateadvance compensation on page 181). However, you are recommended to run the OMAS Diagnostic Tests from the Print Care window as soon as the substrate is unloaded, to avoid having the same problem with other substrates. See Clean the substrate-advance sensor on page 204. If the problem persists, try adjusting tension and vacuum settings according to the table below, step by step (a to c), until you find settings that work. Thin white lines These are thin white/light lines across the entire image at regular intervals, more easily seen in solid area fills. There are three likely causes: ● Nozzle clogging. A printhead nozzle can be sealed temporarily, by some fibers or dirt in the ink bore. Then not all the ink is fired and a lighter horizontal band appears. Sometimes a bigger drop with all the ENWW Advanced print-quality troubleshooting 385

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If the substrate advance is not well adjusted, particularly if it is under-advancing, a dark line can appear
between passes.
A clear symptom of this is when the dark lines appear across all colors, because the cause is common to all
of them. To confirm it, in the Internal Print Server, select
Printer
>
Advance Calibration
to check the
substrate advance. See
Substrate-advance test print
on page
182
.
You can usually correct this problem by adjusting the substrate advance compensation (see
Substrate-
advance compensation
on page
181
). However, you are recommended to run the OMAS Diagnostic Tests
from the Print Care window as soon as the substrate is unloaded, to avoid having the same problem with
other substrates. See
Clean the substrate-advance sensor
on page
204
.
If the problem persists, try adjusting tension and vacuum settings according to the table below, step by
step (a to c), until you find settings that work.
Thin white lines
These are thin white/light lines across the entire image at regular intervals, more easily seen in solid area fills.
There are three likely causes:
Nozzle clogging.
A printhead nozzle can be sealed temporarily, by some fibers or dirt in the ink bore. Then
not all the ink is fired and a lighter horizontal band appears. Sometimes a bigger drop with all the
ENWW
Advanced print-quality troubleshooting
385