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Unit 6: Maintenance
SATO GT4xxe Series Operator Manual PN 9001138A Page 6-9
RIBBON GUIDE ADJUSTMENT
If the print ribbon is not spread smoothly over the print head when it makes contact with the
media, print voids will occur at the point of the ribbon fold. Typically, this is the result of the axis of
one of the following not being perfectly parallel: ribbon spindle, ribbon roller, print head, or ribbon
guide.
The purpose of the adjustable ribbon guide is to compensate for the axis deviations of the other
three. By adjusting the ribbon guide proportionally to the degree of deviation, the ribbon spreads
smoothly as it travels from the ribbon supply spindle, to the guide, and beyond.
Ribbon guide adjustment is a trial and error activity that requires the pause of printing, unlatching
of the print head, adjusting the guide, relatching the print head, and printing once again. Several
labels or tags must be printed following each adjustment to determine if the adjustment was
effective.
The ribbon guide is secured to the face of the print assembly by a screw on each end. Before
adjusting the guide, visually inspect that its axis is parallel with that of the print assembly. If not,
adjust accordingly, ensure the set screws are secure, and once again commence printing.
By starting in a neutral position, either end may be adjusted vertically as necessary to remedy the
wrinkling problem.
Figure 6-6, Ribbon Guide Adjustment
Guide Plate
Alignment Lines
Set Screw
Set Screw
Guide Plate