516
JAN 2006
Ver. 5.2
DP-3510/3520/3530/4510/4520/4530/6010/6020/6030
11.1.2.2.3. Feeding and Delivering
1. Outline
The Finisher moves copies arriving from the Copier to the Delivery Tray, Stapling Tray, or the Saddle
Stitch Unit according to the mode of delivery. On the Stapling Tray, the copies are subjected to job
offset or stapling as instructed by the Copier. The First Feed Motor (M1), Second Feed Motor (M8) and
Inlet Feed Motor (M9) are stepping motors, and Delivery motor (M2) is a DC motor. These motors are
controlled by the microprocessor (CPU) on the Finisher Controller PCB, and rotate either clockwise or
counter-clockwise.
The paper paths are equipped with the following four sensors for detection of paper (arrival,
passage):
• Inlet Sensor (PI1)
• Delivery Sensor (PI3)
• Stapling Tray Sensor (PI4)
• Buffer Path Paper Sensor (PI14)
In addition, each delivery tray is equipped with a sensor designed to detect the presence/absence of
paper on it.
• No. 1 Tray Paper Sensor (PI11)
• No. 2 Tray Paper Sensor (PI12)
If a copy fails to reach or move past each sensor within a specific period of time, the Finisher Controller
PCB identifies the condition as a jam, and stops the ongoing operation and at the same time informs
the Copier of the condition.
When all doors are closed after the paper jam is removed, the Buffer Path Inlet Paper Sensor (PI17)
checks whether or not copies are being detected. In addition to the above four sensors, the Inlet
Sensor, Delivery sensor, Stapling Tray Sensor and Buffer Path Paper Sensor are also checked for the
presence of paper. If the sensors detect paper, the Finisher Unit judges that paper jams have not
completely been removed, and sends the paper jam removal signal to the Copier again.
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