Ribbon Supply And Rewind Units - Intermec EasyCoder PD4 Service Manual

Chapter 6—Transfer Ribbon Mechanism

6.3 Ribbon Supply and Rewind Units

Description
Replacement of the Bobbin Plate
Ribbon Tension Adjustment
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The ribbon supply and ribbon rewind units look exactly the same, but
differ in having internal springs with different strength. The are not avail-
able as separate spare parts and should not be dismantled with the excep-
tion that the bobbin plate is replaceable.
At the outer end of each unit is a knob for adjusting the ribbon tension, see
below.
The bobbin plate is held by a single screw:
The knob at the outer end of each unit is engraved with numbers from 1 to
4, where 1 is maximum friction and 4 is less friction. Factory default is #1
on the supply unit and #2 on rewind unit. If the friction settings prevent
the ribbon from running with the same speed as the media, smudging may
occur.
If ribbon wrinkling occurs during printing, push the knob on the ribbon
supply hub inwards (1) and rotate it clockwise to increase the breaking
force (2).
If the printer have problems pulling the labels (especially when using a
ribbon less than 50 mm/2 in wide), push the knob on the ribbon supply
hub inwards (1) and rotate it counterclockwise to decrease the breaking
force (2).
Screw
Bobbin plate
2
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