If you are experiencing banding or blocked print heads, please perform a head clean using your printer maintenance software and print the .pdf file below for 4 or 6 colour printers. If you have a 5 colour printer, please use the 4 colour test sheet. If the banding is still present, leave the printer for 2 hours and then repeat.
Most problems will be resolved with a little time and patience. If the blockage is more severe, you may require print head cleaning fluid to break down the dried ink.