Vita II
Maintenance and cleaning
11.18
Operating manual
85
9.8 Adjusting the printhead
An important characteristic for a high quality print is the parallelism of
the focal line of the thermal printhead to the pressure roll. Because of
the fact that the position of focal line of the printhead depends on
fluctuations caused by production, it is necessary to adjust the
parallelism.
1. Loosen the fixing screw (B) with a hexagon key by approx. ¼
rotations.
2. Adjust the parallelism with the adjusting screws (F).
Clockwise = printhead moves forwards
Counter clockwise = printhead moves backwards
3. Adjust the parallelism as long as the printing result comes up to
your full expectation.
4. Tighten again the fixing screw (B).
5. Start a print order with approx. 10 labels and control the correct
passage of transfer ribbon.
Increasing the head contact pressure leads to an improvement of the
print image density on the corresponding side and to a shifting of the
ribbon feed path in the corresponding direction.
CAUTION!
Damage of printhead by unequal use!
Change factory settings only in exceptional cases.
The selection of the smallest value can optimise the life cycle of
printhead.
6. Turn pressure screws (E) to change the pressure of printhead.
7. Turning the pressure screws
in clockwise direction increases the pressure
anticlockwise reduces the pressure.
8. The printhead is pushed on via two plungers (A). The location of
the right plunger must be set to the width of the label medium
used so as to:
achieve even print quality across the entire label width,
prevent wrinkles in the feed path of the transfer ribbon,
prevent premature wearing of the print roller and printhead.
9. Turn lever (C) clockwise to lock the printhead.
10. Loosen the screw (E) by approx. ¼ rotations.
11. Position right plunger (A) above the outer label edge.
12. Tighten again the screw (E).
Parallelism
Pressure
