18
18
Internal Rewinder
Measurement of the winding torque at the internal rewinder occurs by determining the pulling forces with a cord
wrapped around the rewinder.
The physical relation between the torque and the pulling force is:
F= M / r
F:
Pulling force [N],
M: Winding
torque [Ncm],
r:
Radius of the rewinder (3,8 cm)
The set values for the winding torque and the resulting pulling force at the rewinder are:
Winder
Measurement
Direction of rotation
Winding torque M
Pulling force F
Internal rewinder
A
against winding direction
19,0 - 26,6 Ncm
5,0 - 7,0 N
B
in winding direction
7,6 - 11,4 Ncm
2,0 - 3,0 N
Table 2
Winding torques at the internal rewinder
1
2
3
4
1
A
B
Figure 12
Winding torques at the internal rewinder
Danger!
Risk of death via electric shock!
Before opening the housing cover, disconnect the device from the mains supply and wait at least one
minute until the power supply unit has discharged.
1. Unplug the printer from the electrical outlet.
2. Remove the rear cover.
3. Remove the labels from the printer.
4. Push the cord (2) under a bracket (3) of the internal rewinder (4) and wind it around the rewinder.
5. Secure spring scale [10 N] (1) at the end of the cord.
6. Move the spring scale upward vertically until the winder begins turning.
If the drive belt at the rewinder is also moving, hold it in place during the measurement. Otherwise, the
measurement is not accurate.
7. Allow the cord to unwind from the rewinder at least one full turn and read the pulling force F on the spring scale at
the same time.
8. If the winding torque differs from the set value, it must be adjusted
