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8. FOLDING/SADDLE STITCHING/TRI-FOLDING SECTION
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Theory of Operation Ver1.0 Sep.2006
FS-607
8.3.3 Tri-folding gate control
The tri-folding gate switches between the folding/saddle stitching path and the tri-folding path. The tri-folding
gate solenoid (SD6) drives the tri-folding gate.
A. Tri-folding 2nd folding operation
The tri-folding gate solenoid (SD6) [5] drives the tri-folding gate [6] to switch the paper path to the tri-folding path
for leading the paper exited from the folding roller [1] to the tri-folding stopper [4].
To perform the 2nd folding, the loop [2] formed when the paper contacts with the tri-folding stopper are drawn
between the folding roller and the tri-folding roller [3]. Then the paper is exited to the booklet tray [8].
The position of the tri-folding stopper determines the folding position in the 2nd folding.
B. Tri-folding gate control
After the saddle stitching stopper stops at the tri-folding position, the tri-folding gate solenoid (SD6) [5] turns ON
and drive the tri-folding gate [6] to switch the paper path to the tri-folding stopper.
SD6 turns OFF after a specified period of time since the folding paper exit sensor (PS25) [9] detects the trailing
edge of the paper bundle.
[1] Folding roller [6] Tri-folding gate
[2] Loop [7] Paper
[3] Tri-folding roller [8] Booklet tray
[4] Tri-folding stopper [9] Folding paper exit sensor (PS25)
[5] Tri-folding gate solenoid (SD6)
[6]
[5]
[2]
[3]
[8]
[4]
[7]
[9]
[1]
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[3]