Unit 6: Maintenance
SATO XL400-410e Operator Manual PN 9001135A Page 6-9
PRESSURE ROLLER ALIGNMENT
The pressure roller works in conjunction with the feed roller, sandwiching the loaded media
between the two. It is the drive-coupled feed roller that advances the media forward to the platen
roller. The pressure roller is an idle one.
For proper media tracking the two rollers must be parallel and possess proportionate pressure
from one end to the other. Tracking is the direction the media is incline to take. When the rollers
are properly adjusted, the media will tavel straight forward without inclination to laterally deviate.
When there exists uneven pressure between the two rollers on either end, the media will attempt
to take the route of least resistance. In doing so, will either track to the left or to the right. This
condition is refered to as “wandering”.
Whereas this procedure covers only pressure roller alignment, it will most likely be used in
conjunction with the Pressure Roller Balance procedure that follows.
If this procedure fails, or adjustment is extreme to remedy the tracking problem, recenter the
pressure roller as indicated on its respective scale and perform the Pressure Roller Balance
procedure. Return to this procedure for fine tuning as necessity dictates.
1 Open the top housing cover to access the pressure roller assembly.
2 Begin continuously printing labels.
3 Loosen the set screw and adjust the eccentric nut while observing the media tracking.
4 Hold the eccentric nut in position and tighten the set screw upon proper tracking.
5 Close the top housing cover.
Figure 6-7, Pressure Roller Alignment
Pressure Roller AssemblySet Screw/Eccentric Nut
Top Housing Cover
