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ENWW Folding/Tri-folding section (Q3634A only) 57
Finisher unit explanation
Mechanism
*1 Folding/tri-folding (first folding)
The folding knife motor (M719) rotates
the crank axle 180 degrees, which
protrudes the folding knife toward the
contact surface of two folding rollers.
The two folding rollers rotate to drag
and fold the sheet(s) of paper.
The location at which the paper is folded
will be controlled by the position of the
booklet stopper.
*2 Tri-folding (second folding)
The tri-folding gate SD (SD706)
changes the position of the tri-folding
gate so that the paper carried from the
folding rollers will be conveyed toward
the tri-folding stopper.
After the paper has been stopped by the
tri-folding stopper, it is bent along the
surfaces of the upper folding roller and
the tri-folding roller. Then the paper is
carried through the contact surface of
the two rollers, which completes the
second folding operation.
The location for the second folding is
determined by the position of the
tri-folding stopper.
*3 Booklet full detection
The folding full LED (LES729) and the
folding full PS (PS729), which consist of
a pair of translucent sensors, detect the
booklet tray full condition.
If a predefined time period has elapsed
since the paper shielded the sensor
light, a booklet full condition is reported.
Mechanism Method
Folding/Tri-folding
(first folding)*1
Folding knife and roller folding
Tri-folding
(second folding)*2
Roller folding
Booklet full detection*3 Translucent sensor
Folding knife HP (PS722)
Folding rollers
Paper
Folding knife
Three-folding gate
Paper
Booklet tray
Folding rollers
Three-folding roller
Three-folding stopper
Three-folding gate SD (SD706)