Glossary → Banding
Banding.
repeating streaks from head misalignment or an uneven feed
Evenly spaced stripes across a print, caused by printhead misalignment or an uneven media feed rather than by a blocked nozzle. It looks like nozzle dropout to an untrained eye, and the two fixes point in opposite directions: dropout wants a clean or a purge, banding wants a calibration and a feed check. Run the wrong one and you burn a shift with the streaks still there.