Brady IP Series Printer
Settings and Adjustments
Edition 12/07 Service Manual 21
3 Settings and Adjustments
3.1 Measuring the rewind torques
The winding torques on the ribbon rewind hub and ribbon supply hub are measured by determining the
traction.
The physical relation between torque and traction is as follows:
F= M / r
F:Traction [N],
M: Rewind torque [Ncm],
r: Radius of the hub (12.5 mm)
The specified values for the winding torque and the resulting traction are:
Fig. 14: Measuring the winding torques on the ribbon rewind hub and ribbon supply hub
Rewind torque M Traction F
Friction clutch on the ribbon rewind hub Fig. 14 A 14.4 - 17.5 Ncm 11.5 - 14.0 N
Brake on ribbon rewind hub Fig. 14 B 2.7 - 4.5 Ncm 2.2 - 3.6 N
Friction clutch on the ribbon supply hub Fig. 14 C 3.9 - 4.5 Ncm 3.1 - 3.6 N
1
Ribbon rewind hub
2 Spring scale
3 Ribbon supply hub
CBA
1 232
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