Bank

Feed/Separation

The paper feed motor [A] turns ON to drive the feed roller [B]. The feed roller rotates the pick-up roller [C] through the timing belt, and feeds the top sheet of paper. The paper feed motor also drives the separation roller [D], through the relay gear. The separation roller [D] rotates at the same time as the feed roller [B] due to the friction between the separation roller [D] and the feed roller [B].

The paper feed motor [A] drives the feed roller [B] via the timing belt [E].

In the 2nd/3rd paper feed drive units of Pro C5200S/C5210S, the paper feed motor drives the feed roller via the gear [A] instead of the timing belt.

When two or more sheets of paper are fed, the separation roller [D] rotates in reverse to push back the lower sheet of paper to the tray.
The fed paper is transported to the registration roller.

Separation Roller Contact

The separation roller [B] is separated from the feed roller [A] when the paper feed tray is removed. When the paper feed tray is installed, the separation roller [B] is pressed against the feed roller [A].

Tray Shift-up/down

1. When the paper tray lift motor [A] on the rear side rotates, the coupling [B] engages with the pin [C] on the lift arm of the bottom plate, and then the arm rotates. The bottom plate [D] is raised by the rotation of the arm.
   When the paper feed tray is removed, the engagement of the coupling [B] and the pin [C] is released. Then the bottom plate [D] falls down by its own weight.
   The remaining amount of paper in the tray is detected by the angle of the paper tray lift motor rotation.
   
2. When the paper feed tray is installed, the pick-up roller [A] descends. If the bottom plate is raised in this state, the pick-up roller [A] is lifted by the top sheet of the paper in the tray. Then the actuator turns the paper tray upper lift sensor [C] OFF and the paper tray lift motor turns OFF.
   The top of the stack of paper in the tray lowers during copying/printing. When the paper tray upper lift sensor [C] is turned ON because of this, the paper tray lift motor turns ON again and lifts the paper [B].
   
   

Paper End Detection

When the paper in the paper feed tray runs out, the actuator [A] turns the paper end sensor [B] ON. Then paper end is detected.

Tandem Tray (1st Tray)

1. Paper Size Detection
   The tandem tray cannot detect the size of the paper loaded in the tray. Therefore, you need to adjust the side fence and back fence, and then select the paper size in SP5-959-001.

   SP No.	SP Name	Default
   SP5-959-001	Paper Size 1st Tray (Tandem)	NA: 0 (A4 LEF) EU, AP, CHN: 1 (8.5"x11" LEF)

2. Tray Shift-up/down
   When the paper tray lift motor [A] on the rear side of the right tandem tray rotates, the coupling [E] engages with the pin [B] on the lift arm of the bottom plate, and then the arm rotates. Then the timing pulley [C] rotates and drives the timing belt. The bottom plate [D] is raised by the timing belt.
   When the right tandem tray is withdrawn, the engagement of the coupling [E] and the pin [B] is released. Then the bottom plate [D] falls down by its own weight. A damper is installed to prevent the bottom plate from falling suddenly.
   The upper limit of the bottom plate level is detected by the paper tray upper limit sensor attached to the pick-up roller assembly unit. The lower limit of the bottom plate level is detected by the paper tray lower limit sensor [F].
   
   

3. Remaining Paper Detection
   The four sensors (paper height sensors 1,2,3 and paper tray lower limit sensor) [A] on the rear side of the tandem right tray detect the amount of paper remaining in the tray. After the paper tray lift motor [B] stops, the machine checks the sensors from the lower sensor to the upper sensor (remaining amount: 10%, 30%, 70%, and 100% in order). The determination of the remaining paper amount is made based on which sensor is interrupted first. Then the operation panel shows the remaining paper amount. If none of the four sensors are interrupted, the panel shows that the remaining paper amount is 100%.
   The paper end sensor detects when there is no paper in the right tray.
   
   

4. Right Tandem Tray End Fence Shift
   When the paper in the right tandem tray runs out, the end fence rear solenoid [A] turns ON to open the rear end fence [C] if paper is set in the left tandem tray.
   The paper is moved from the left tandem tray into the right tandem tray when the rear end fence [C] is opened. When the rear end fence [C] is completely opened, the rear end fence closed sensor [B] is turned OFF (interrupted). Then, after the paper is moved into the right tray, the end fence rear solenoid [A] turns OFF to close the rear end fence [C].
   The rear end fence closed sensor [B] detects whether the rear end fence [C] is open or closed. If the rear end fence [C] is not closed, the operation panel asks the user to place the paper correctly in the tray.
   

5. Left Tandem Tray Back Fence Shift
   When the paper end sensor in the right tandem tray detects paper end while the left tray paper sensor [A] in the left tandem tray detects that paper exists, the rear fence drive motor (DC motor) [B] turns ON at the same time as the rear end fence movement. Then the left tray back fence [C] pushes the stacked paper in the left tandem tray to the right tandem tray. When the rear fence return sensor [D] turns ON, the rear fence drive motor starts rotating in the reverse direction, until the rear fence home position sensor [E] detects the left tray back fence.
   

6. Left Tray Lock
   The left tandem tray cannot be withdrawn while the paper is being delivered from the left to the right tandem tray. When the machine starts delivering the paper from the left to the right tandem tray, the left tray lock solenoid [A] turns ON and the lock latch [B] hooks onto the hook [C] on the rear of the left tandem tray. After the paper has been delivered and the left tray back fence returns to the home position, the left tray lock solenoid [A] turns OFF and the latch [B] is released from the hook [C]. This mechanism prevents the tray from being withdrawn while the paper is being delivered.
   

7. Right Tray Lock
   When the bottom plate [B] of the right tray lifts from its lowest position, the joint lever [A] falls under its own weight and the right tray is locked.
   When the bottom plate [B] is in the lowest position, the lock lever of the left tray latches onto the joint lever and both of the trays can be withdrawn at once.
   When the bottom plate [B] is being lifted or is at the feed position, the lock lever rises and only the left tray can be pulled out.
   

8. Tandem Operation
   When the machine detects paper end in the right tandem tray during feeding or when lifting the bottom plate, the machine proceeds with the following operation after the bottom plate in the right tray reaches the lowest position, if there is paper in the left tandem tray.
   

Side Fence Lock Mechanism (2nd Tray-3rd Tray)

The paper feed tray has a lock lever [A] to help feed the paper straight. (Pro C5200S/C5210S has a side fence support plate [B].)
After adjusting the side fences [C] in accordance with the paper size, you need to lock the lock lever [A] to fix the side fence position. Furthermore, you can prevent the rattling of the side fences by tightening the shoulder screws [D] [E] of the side fence support plate [B] for Pro C5200S/C5210S.

Paper Alignment (1st Tray-3rd Tray)

The paper feed tray has a pressure plate [A] on the rear side fence to help feed the paper straight. The pressure plate [A] pushes the paper towards the front side fence [B]. Therefore, the paper is drawn to the front side fence [B] and it is fed straight.

The bottom plate [A] is raised when the amount of remaining paper in the tray is reduced. In addition to this, Pro C5200S/C5210S has a lever [B] in the paper tray. When the bottom plate [A] rises, the lever [B] is pushed up, and the pressure from the pressure plate [C] is decreased.

Friction Ball Mechanism (1st Tray-3rd Tray) (Pro C5200S/C5210S only)

Pro C5200S/C5210S has a friction ball [A] in the paper feed section to help feed the paper straight. The friction ball [A] applies a load to the upper side of the paper. The paper is drawn towards the front side fence [B] while the paper is feeding. This helps feed the paper straight.

Dehumidification Function

Tray heaters [A] are provided as service parts. They can be installed under the 3rd tray and the 1st tray. To use the heaters, turn on the heater switch [B] at the rear side of the machine. If SP5-965-001 is set to "0", the heaters are on independent of the ON/OFF status of the main power switch. If the scanner anti-condensation heater and the LCIT heaters (for RT4020 / RT4050) are also installed on the machine, those heaters are turned ON at the same time.

Paper Size Auto-detection

The machine detects the paper size automatically when the side fences and end fence are adjusted. The status of the side fences and end fence affect the paper size sensors [A]. The machine figures out the paper size from the switch combination of the paper size sensors, and then shows it on the operation panel. The relation between the switch combination and the detected size is shown below.
The machine has a paper tray set sensor [B] on the right rear side of the paper tray.

0: Switch OFF (Sensor Output: H)
1: Switch ON (Sensor Output: L)