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5. Saddle Unit
A.Basic Operations
(1)Outline
The machine stitches a stack of sheets (middle 2-point), then folds the
stack in two in the finisher. These operations are controlled by the
finisher controller PCB.
The finisher controller PCB is controlled by the commands from the host
machine.
B.Feed/Drive System
(1)Outline
This machine stitches the paper stack coming from the finisher, folds it,
and delivers it to the bind tray in the saddle unit in response to the
commands from the host machine.
That is, the machine performs the following operations:
a) Paper feed-in
b) Stitching
c) Stack feed
d) Folding/delivery
a) Paper feed-in
d) Folding/delivery
Fig.F02-502-01
a.Paper feed-in
After being aligned on the processing tray, a stack of sheets is
sandwiched between the stack delivery rollers. As the stack delivery
rollers rotate, the stack is fed toward the saddle unit.
Stack delivery roller (upper)
Paper stack
Stack delivery roller
(lower)
Fig.F02-502-02
b) Stitching
c) Stack feed
AR-FN7/PN1 OPERATIONAL DESCRIPTION 4-11
b.Stitching
When the center of the paper stack (stitching position) reaches the
stapler's staple position, the stapler stitches the paper stack.
When only one sheet is fed from the host machine, the next step (stack
feed) is performed without performing the stitching operation.
Staple
Stapler (lower)
Fig.F02-502-03
c.Stack feed
The stack feed rollers feed the paper stack to the stack folding/delivery
position where the center of the stack (stitched position) is level with the
paper pushing plate and paper folding roller's nip part.
Stack feed roller (lower)
Paper fold roller
Fig.F02-502-04
Stapler (upper)
Stack feed roller (upper)
Paper pushing plate
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Troubleshooting
