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Output Quality Analysis Procedures
Advanced Punch Service Manual
© Copyright 2009 GBC. All rights reserved.
3-3
3.5 RAP Skuff Marks On Paper
Perform the Inspection and Cleaning Procedures detailed for the following belts
and rollers.
Idler Rollers procedure
Drive Rollers procedure
Bypass Paper Path procedure
Aligner Drive Belt (Green belts) procedure
3.6 RAP Lead Edge Damage
Some areas of the lead edge may be damaged either by the Backgage Gates or
the Exit Roller Pinch Rollers. This procedure will assist you to identify the source
of the damage and to perform corrective actions.
Procedure
1. Review problem with the customer; request that the customer reproduce the
problem to fully understand the materials, workflow and run modes involved.
2. Run 50-100 sheets into a single stack and compare the defect with the photos
below.
Figure 3.3 Damage from Exit Pinch Rollers
Root cause:
The lead edge damage displayed in
occurs when sheets
exiting the punch path strike the upper Exit Pinch Rollers with upwards curl. The
lead edge will be damaged in two areas.
Corrective actions:
Check the curl of the sheets entering the GBC Module.
Adjust the curl to decrease upwards curl.
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