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Troubleshooting guide
Getting fine lines or streaks running in the web direction (doctor blade lines / chatter)
Posted by the SuperPrinters team · 7/26/2026
Thin continuous streaks, 'railroad tracks,' or comet-tail lines run in the direction of web travel, sometimes with a repeating drag mark. On heavy solids the blade may also buzz or vibrate, leaving a fine chatter pattern. Most often caused by a nick, chip, or embedded hard particle on the blade edge dragging ink down the cylinder, among other possible causes — a full step-by-step diagnostic and fix follows below.
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