Chapter 3 Mechanical Adjustments Page 3-13
3.3.5 Idler Roller Setup
The idler rollers (p/n 9102017A) are used to route and support the label backing material
throughout the required components on the BK731A-2 / BK731-2WLA head. For labels
on backer materials that are up to 5” wide, wider idler rollers were designed to ensure that
the labels are properly conveyed through the Peel Point Assembly and onto mail pieces.
Figure 3-11: Idler roller assemblies (p/n 9102017A).
To ensure that labels are dispensed as square as possible from the Peel Point Assembly, it
is important to ensure that the backer material is routed in an aligned manner.
Adjustments can be made to the alignment by using the Tab backer guide based on the
width of the labels being used for a particular application. Regardless, it is important to
setup the label backer material such that the “aligned edge” as indicated in Figure 3-12 is
making full contact with the circular extension on the Backer Idler Roller and there is
roughly a 1/32” gap between the other edge of the backer material and the Tab Backer
Guide. If the gap is too small, it is possible that the backer material will tear if there is
insufficient clearance for the label backer to move during normal operation.
Tab backer guide
p/n 9101071
O-ring
/n 9101075
Shoulder Bolt
p/n 416197
Backer Idler Roller, WL
p/n 9102017
Buskro Ltd. BK730-2 Tabber
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