HP Designjet L26100 HP Designjet L26500 / L26100 printer series - Maintenance - Page 67

Troubleshoot images Ink smears Ink smears may be seen on the print for the following reasons. ● The substrate is skewed. Do not ignore the warning message that appears during the loading process if there is significant skew. ● The substrate is not flat in the print zone. Try the following possible solutions. ◦ Increase the vacuum level in steps of 10 mmH2O. Do not exceed the following limits: 20 mmH2O for banners, 35 mmH2O for vinyl, and 50 mmH2O for other substrate families. ◦ Reduce the curing temperature. You will probably need to increase the number of passes in order to achieve adequate curing. ◦ Check whether there are fibers on the printheads. If the problem appears only at the beginning of the print, try the following suggestions. ● Disable the automatic cutter. ● Go to the front panel and select the icon, then Substrate handling options > Extra bottom margin. Set the margin to 100 mm. If that is not enough, try 150 or 200 mm. This extra margin will apply only to jobs that start printing when the printer is idle and when the cutter is disabled. ● Increase the vacuum level in steps of 10 mmH2O. Do not exceed the following limits: 20 mmH2O for banners, 35 mmH2O for vinyl, and 50 mmH2O for other substrate families. ● Decrease the warm-up drying temperature in steps of 5°C. ● Decrease the warm-up curing temperature in steps of 5°C. ● Increase the number of passes. ● Make sure that the substrate is stored in the same room in which the printer is located. Subtle stains or uneven appearance Subtle color differences may be seen on some substrates if they are stored partially covered after printing. In the period immediately after printing, such substrates should be stored either totally covered or totally uncovered. It may be advisable to avoid the prolonged contact of two printed faces. This problem tends to disappear if the substrate is left uncovered for some time. Alternatively, some individual rolls of substrate may have a defective coating. The solution in this case is to use another roll. ENWW Ink smears 61