HP Designjet T7100 Printer series - Manual (Page 169)

The image has a wood-grain appearance
(aeroworms)
Aeroworms are wavy, horizontal bands produced by air-induced dot placement error (DPE). In extreme
cases, aeroworms give the image a wood-grain appearance. The problem occurs most commonly on
print jobs that are set for low-quality and high-speed. It does not occur when the custom print-quality
setting is set to “best.”
To eliminate aeroworms, select a higher IQ print setting. See Select print quality on page 79 .
ENWW The image has a wood-grain appearance (aeroworms) 161
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