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Non-uniform transfer quality across the web
Description
Either transfer quality is good in
the center of the web, and poor
at the border, or vice versa. The
image will always be clouded
either in the center (high-
density clouds because of
transfer current too high) or at
the border (low-density clouds
because of transfer current too
low).
28
IBM InfoColor 70 and 3170 Print Media Guide
paper too dry or transfer current too low
paper too wet or transfer current too high
Cause
Moisture content of the paper
too high.
Inappropriate storage of paper
reels (more moisture towards
the edges).
Solution
Due to the limited drying
capacity of the pre-heater, this
artifact cannot be eliminated.
Paper reel cannot be used.
To prevent this problem, wrap
each reel in a moisture-tight
package.
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