Datamax ?-class series, Maintenance Manual

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Adjustments and Maintenance
2-19
2.4 Printhead Burn Line Adjustment
The Burn Line has been adjusted at the factory for strict compliance using 6.5-mil (.0065 inch) media,
ensuring print quality across a majority of media types. In extreme cases, however, if media of a different
thickness or rigidity is used (for example, heavy tag stock), print quality can change. Typically, thicker
media requires a slight forward adjustment, while thinner media requires a slight backward adjustment.
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If you have questions, contact a qualified technician or Datamax Technical Support before proceeding.
To adjust the Burn Line:
1. Load the printer with your media (and ribbon, if required).
2. Loosen the two Locking Screws approximately ¼ turn counter-clockwise.
3. Turn the Adjustment Screws counter-clockwise until the burn line is past the platen roller vertex, then
print a test label, as follows:
Non-Display models: Simultaneously press the
PAUSE +
FEED
buttons.
Display-equipped models: Select a Print Quality Label (see the Operator’s Manual for details).
4. The label should look light and uneven. Now, tighten the Locking Screws just until they are ‘snug’
(tight enough to remove any play in the printhead assembly, yet loose enough to allow the Adjustment
Screws to move the printhead).
5. Turn
each Adjustment Screw clockwise about a ¼ turn (or an 1/8 turn for finer adjustments, see note
below). Print another test label and examine the print quality. Repeat this step until labels are
produced with an even print contrast and an acceptable print quality.
Note: When the Locking Screws are ‘snug’, turning the Adjustment Screws counter-clockwise will NOT move the
printhead outward; if you have adjusted the printhead too far inward, restart the entire procedure.
6. Tighten the Locking Screws. Print a final Test label to verify the adjustment.