4.Troubleshooting: Post-Processing Option
501
Cause
During binding processes (edge stapling, saddle stitching), paper is transported to and assembled in a
staple tray and then it is discharged by a release claw.
When discharging thin, coated paper, if the paper is weak-bodied, short-grained paper, as the
mechanism tries to push and lift up the trailing edge of the paper, it makes it buckle, resulting in
scratches on the paper and/or jams due to failure to release.
This is likely to occur if:
Environment: The higher the humidity, the weaker the body of the paper becomes and the more
prone to buckling.
Paper body: If the paper is weak-bodied (short-grained), during discharge the efficiency drops in
transmitting the transfer force to the leading edge of the paper, which is a factor in producing
buckling.
Paper length: The discharge distance increases in proportion to the paper length and the
resistance due to friction between the paper and the tray has a strong influence as a factor in
buckling occurring.
Number of sheets: the fewer the sheets of paper, the weaker the body of the bundle of paper, and
the more prone to buckling.
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