HP Scitex LX800 HP Scitex LX Printer Family - User's guide - Page 70
Vacuum, Print adjustment, Substrate, in the HP Internal Print Server.
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5. If you see vertical banding, try these adjustments in this order: a. Decrease the Vacuum setting in steps of 5 mmH20, unless you have already increased it in a previous step. b. Decrease the drying temperature, unless you have already increased it in a previous step. c. Decrease airflow in steps of 20%, unless you have already decreased it in a previous step. 6. If you see horizontal banding, check the substrate advance pattern in the test sample (the fine horizontal lines). ● If you see magenta above the black lines, press the Print adjustment button in the Create Substrate window and increase the substrate-advance setting. ● If you see magenta below the black lines, press the Print adjustment button in the Create Substrate window and decrease the substrate-advance setting. ● If the lines are simply black, proceed to the next step. 7. If you see irregular horizontal banding, try these adjustments in this order: a. Decrease the Vacuum setting in steps of 5 mmH20, unless you have already increased it in a previous step. b. Adjust substrate tension according to the following recommendations: ● The input tension should be the output tension + 15 N/m. ● First increase tensions by 20 N/m. If results are unsatisfactory, decrease tensions in steps of 10 N/m. c. Increase the number of passes. 8. If colors are misaligned, try realigning the printheads manually. See the Maintenance and troubleshooting guide. When you have adjusted the settings for one print mode, you can proceed to other print modes. However, it's not necessary to deal with them all at once: you can edit the substrate preset at any time by selecting Substrate > Edit in the HP Internal Print Server. TIP: Note the settings that you used with the first print mode. You can probably use the same settings for other modes. 66 Chapter 3 Handle the substrate ENWW