Need Help Mutoh Printer 2508UF Flatbed BANDING on Metal signs.

[Desert Sands]

Our go to for most materials, yard signs, wood, and more yard signs from the Flexi Software has been 600x900 Express.. no problems.. but when we print on metal signs we get banding, is there a different setting (within the Flexi Software) we should use? Nozzle checks done, everything checks out, nice clean prints on the yardsigns but banding on metal

 

[Desert Sands]

We figured it out, slowing down the printhead speed by going Quality, turning off one of the heat lamps (that are on the print head assembly) and reducing the intensity of that one heat lamp, also in one direction only. This helped a lot with the metal signs banding almost to zero, leaving a nice flat surface.