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High-frequency cloudiness
Description
Irregular low-density clouds,
especially occurring at the
borders of the web.
Periodic low-density bands
Description
Low-density bands along the
web, appearing in duo-color
planes over the whole web
width. They do not occur in
mono-color planes.
Cause
Duplex currents too high.
low-density band
Cause
Duplex currents too low.
WEB
high-frequency clouds
Solution
Decrease positive duplex
currents in steps of 20µA and
negative duplex currents in
steps of 10µA.
WEB
Solution
Increase the positive duplex
currents in steps of 10µA and
the negative duplex currents in
steps of 5µA.
23
Artifact Samples
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