Maintenance and Cleaning
Spectra II
92
Operating Manual
08.17
9.8 Adjusting the Printhead (Flat Type)
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 screws (I, Figure 17) with a hexagon key by approx. ¼
rotations.
2. Adjust the parallelism with the adjusting screws (H, Figure 17
)
.
Clockwise = printhead moves backwards
Counter clockwise = printhead moves forwards
3. Clockwise = printhead moves backwards
Counter clockwise = printhead moves forwards
4. Tighten again screws (I, Figure 17
)
.
5. Start a print order with approx. 10 labels and control the correct
passage of transfer ribbon.
After adjusting parallelism and no even strong pressure exists over
the complete print width, by means of a plate (B) you can set the
balance as follows:
1. Loosen screw (C, Figure 17) with a screwdriver by approx. ¼
rotations.
2. In order to achieve a pressure balance, turn the excentric bolt (D,
Figure 17
)
as long as the printing result comes up to your full
expectation.
3. Tighten again screw (C, Figure 17).
4. Start a print order with approx. 10 labels and control the correct
passage of transfer ribbon.
Parallelism
Pressure balance
right/left