HP Latex 3200 Users Guide - Page 391
Thin white lines, step a to c, until you find settings that work.
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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 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