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UBI EasyCoder 501 – Technical Manual
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PRINTING PRINCIPLES, cont'd.
Printing Adjustments,
cont'd.
Ribbon Guide Plate
Knurled Nut
Ribbon Guide Plate :
The ribbon guide plate is used to avoid ribbon wrinkling caused by
lateral travel. The ribbon guide plate is factory-adjusted. Should the
adjustment be lost, the guide plate should initially be adjusted in
parallel with the front edge of the printhead adapter plate.
Obviously, the ribbon guide plate does not need to be adjusted in
case of direct thermal printing.
If the ribbon becomes wrinkled, a few checks should be performed
before the guide plate is readjusted:
• Is the printhead pressure properly adjusted?
• Is the green paper guide ring correctly positioned?
• Is there anything that may interfere with the transfer ribbon, e.g.
the printhead cables.
If the wrinkling problem remains, proceed as follows:
• If the ribbon travels outwards, loosen the knurled nut and press the
outer end of the guide plate slightly backward.
• If the ribbon travels inwards, loosen the knurled nut and press the
outer end of the guide plate slightly forward.
• Tighten the nut and test by printing several labels. Readjust if
necessary.
Note that readjustment may be required when switching between
peel-off and tear-off/cut-off operation.
