Vertical banding
Vertical banding means that your print suffers from added vertical lines or bands, in a regular pattern.
Microbanding
This consists of vertical lines less than 2 mm wide, of very high frequency, that appear in some area fills.
Often they are hardly visible.
Microbanding is probably caused by a faulty printhead. Print the printhead alignment diagnostics plot (see
Printhead alignment diagnostics plot on page 101) to find which printhead is responsible, and replace the
printhead.
Wide bands
A small amount of vertical banding (like waves) can be seen, with a frequency from about 2.6 cm (1 in) to
about 5–10 cm (2–4 in), when printing large area fills of the same color. You may see a different level of
graininess in the bands.
Some substrates show a wave-like behavior on the platen, following the shape of the platen ribs. This is
known as cockle. If the effect is significant, it may affect the placing of the ink on the substrate. In some
cases, it may appear in only some parts of the print, and could be due to wrinkles in the substrate.
Here are some tips for solving this problem:
●
Decrease the drying temperature.
●
Decrease the curing temperature.
●
Change from 4 to 6 colors.
ENWW Advanced print-quality troubleshooting 239
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