Theory of Operation 2-23StaplingAfter stacking and alignment of paper on the processing tray is complete, the finishercontroller board moves the stapler for stapling according to the specified staplingposition. When the controller specifies rear 1-point stapling, the stapler does notmove; it staples while in the standby position. If a different stapling option is selected,the stapler moves forward and the processing tray stopper leans to the forwardposition.The Finisher Slide Motor moves the stapler unit. The Slide Home Position Sensordetects when the unit reaches its home position. The stapler waits at the back end ofthe stack irrespective of the staple mode and paper size.The position of the stapler depends on the staple mode:■ Front 1-point stapling - The stapler moves to the front stapling position of thepaper for stapling and then returns to the standby position.■ Rear 1-point stapling - The stapler moves to the opposite end (rear) of it’s travellength for stapling and then returns to the standby position.■ Middle 2-point stapling - The stapler moves to the rear stapling position first,then to the front stapling position, and then returns to the standby position.The Staple Empty Sensor detects the presence of a staple cartridge in the machine aswell as the presence of staples in the cartridge. A Staple Top Position Sensordetermines when to push staples up to the top of the staple cartridge.StaplerSwing GuideProcessing TrayStopperDelivery TrayPaper StackStack DeliveryRoller (Lower)Stack DeliveryRoller (Upper)s7400-133
