Gfp 865DH-4
March 2021
32
These two
conditions are
observed from
either the area
between the
heat and pull
rollers or the
rear of the
machine where
the web is
exiting the pull
rollers
1. Clutch is too tight
2. Too much pressure on the
pull rollers, see
20. Pull
roller clutch adjustment
1. Clutch is too loose
2. Not enough pressure on
the pull rollers, see
20. Pull
roller clutch adjustment
Consistent distance between the
bubbles is caused by bowed
rollers
Bubbles that start midway or
near the end of the print are
caused by excess moisture in the
media
Web
Path
Web
Path
These two
conditions are
observed in the
web after
exiting the pull
rollers
