17
3 Adjustments
The set values for the winding torque and the resulting pulling force at the test collar are:
Slipping clutch at
Measurement
Direction of rotation
Winding torque M
Pulling force F
Ribbon rewinder
A
against winding direction
13,5 - 14,4 Ncm
4,3 - 4,8 N
B
in winding direction
2,1 - 3,0 Ncm
0,7 - 1,0 N
Ribbon unwinder
C
any
3,6 - 4,5 Ncm
1,2 - 1,5 N
Table 1
Winding torques at the transfer ribbon winders
1
2
3
4
1
A
B
1
C
2
3
4
Fig. 11
Measuring the winding torque at the transfer ribbon rewinder (left) and unwinder (right)
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 transfer ribbon from the printer.
4. Attach the test collar (3) to the winder (4).
5. Turn the knurled nut counterclockwise to clamp the test collar.
6. Wind the cord attached to the test collar around the test collar several times.
7. Secure spring scale [10 N] (1) at the end of the cord.
8. Move the spring scale upward vertically until the winder begins turning.
9. Hold the drive belt in place during the measurement. Otherwise, the measurement is not accurate.
10. Allow the cord to unwind from the test collar at least one full turn and read the pulling force F on the spring scale
at the same time.
11. If the winding torque differs from the set value, it must be adjusted
3.1.2 on page 19.
