MX-FN24, MX-FN25. New Service Manual - Sharp Copying Equipment Service Manual (repair manual). Page 16

MX-FN25  MECHANISM  3 – 8

4)

Transport of the first set is completed. At the same time, the
second set is transported to the staple section. 

5)

The folding plate advances and the folding roller rotates to fold
the first set at the center. At the same time, transporting of the
second set to the center binding staple position is completed. 

6)

The first set folding is completed and discharged. At the same
time, the second set center binding stapling is completed. 

After completion of stapling, the discharge motor turns ON to drive
the discharge belt, discharging copy paper from the staple tray with
the discharge fence attached to the belt. 
At that time, the paper exit guide plate remains in the open state
until the paper bundle lifted by the discharge pawl moves by a cer-
tain distance from the paper exit roller. 
Then, the paper exit guide closes and the paper bundle is dis-
charged to the shift tray by the paper exit roller. 
The paper exit guide plate is opened or closed by rotation of the
cam caused by the rotation of the paper exit guide plate open/close
motor to move the link up and down. 
When discharging paper to the shift tray, the discharge motor is
stopped for 300ms to prevent excessive pushing up. 
After temporary stopping, the discharge motor is driven again and
stops under the state where the discharge fence turns on the home
position sensor filler. 
There are two discharge fences to improve productivity of small-lot
binding. 

Second set
paper bundle

Folding roller

Folding plate

Discharge belt HP sensor

Discharge fence

Discharge
motor

Guide plate open/close motor

Paper exit
guide plate