HP Latex 3200 Users Guide - Page 394
Gloss banding, from the Print Care window as soon as the substrate is unloaded
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- Bidirectional alignment - Intra-color alignment (alignment between the two printheads of the same color) - Inter-color alignment (alignment between different colors) Here are some tips for solving this problem: - If the printhead alignment was done with a different substrate of different thickness, probably a new printhead alignment is needed. - Fine-tune the alignment by identifiying the offenders in the printhead alignment diagnostics plot. See Alignment procedure on page 172. ● Substrate advance. Before trying to adjust any parameter, make the following checks: - Check that no substrate-advance factor was set earlier that could prevent the substrate-advance sensor from working correctly. - Run the diagnostics to check that that the substrate-advance sensor is not dirty. When the substrate advance is incorrect, some light and dark horizontal bands can appear from the misplacement of the ink. 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. Gloss banding This appears in dark, high-density areas as horizontal gloss or matte bands about 1 cm wide. It can happen when the curing system settings are not correct for the substrate. If the bands are more apparent when tilting the print or changing your viewing position, then it is likely to be gloss banding. 388 Chapter 11 Troubleshoot print-quality issues ENWW