4.Troubleshooting: Post-Processing Option
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Entrance Rollers [A]
Paper Registration Rollers [B]
Post Punch Rollers [C], Straight Transport Rollers [D], Proof Path Rollers [E]
Shift Tray Exit Rollers [F], Proof Tray Exit Rollers [G]
Only the Cover Is Discharged During Saddle Stitching (JAM129)
In the folding process of saddle stitching, the bundle of paper is folded in the middle by pinching it
between paper folding rollers on the crease from top to bottom, and while folded in the middle by the
paper folding rollers, it is transported.
During the folding process, the front cover is folded and transported due to the friction between the
paper folding rollers and the paper; paper other than the cover is folded and transported due to the
friction between sheets of paper.
However, if the print density of an image is high, such as with a solid image, it lowers the friction
coefficient between sheets of paper [A], which can result in slipping during the folding process of paper
other than the cover as the transport pressure drops; in such case, only the cover is discharged and
other paper is left behind in the saddle stitch process tray, resulting in a paper remaining jam error
(JAM129).
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