Title
Doc no.
RD07-001
Date (ISO 8601)
Best Practice
BM 2000 Systems
2007-07-05
Process owner Author Sign. Quality Section Revision Page
R&D Dept + Tech Support BOL 1 12(13)
K:\Produkte\PL88 RoHS\BM 2000 Best Practice doc
5 Booklet Quality
Skewed folding
Symptom: Booklets or sheets are not folded straight. Machine is well adjusted and folds white
sheets perfectly.
Cause: Digitally printed sheets have different friction on printed compared to unprinted surfaces.
The skewing occurs when the sheets are forced in between the fold rollers.
Remedy: Place steel balls asymmetrically to compensate for the skewing. Follow the diagram
below:
→
Place
steel balls on the left side
→
Place
steel balls on the right side
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