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AR-350/450 BASIC PAPER FEED SECTION 2-4
4. Paper remaining quantity detection
A. Paper remaining quantity detection
Paper remaining quantity detection is common in each tray except for the manual feed tray. Remaining quantity is indicated in 3 steps plus paper empty
(4 steps in total).
(4 steps in total).
B. Detection method
Paper remaining quantity is detected by the number of times of changing of the remaining quantity sensor from when the tray starts lifting up to when
the upper limit sensor turns on.
Remaining quantity sensor status change when the tray is moving up and remaining quantity
Indication of remaining
quantity
quantity
Sensor status
Paper quantity: 100%
Paper quantity sensor: OFF
Paper quantity: 66%
Paper quantity sensor: ON
Paper quantity: 33%
Paper quantity sensor: OFF (2nd time)
Paper quantity: 0%
Paper sensor: OFF
Paper empty is detected by
the paper empty sensor.
the paper empty sensor.
1/3 area
sensor logic LOW
sensor logic LOW
2/3 area
sensor logic HIGH
sensor logic HIGH
3/3 area
sensor logic LOW
sensor logic LOW
When paper empty is detected
Paper remaining quantity at 1/3
Paper remaining quantity at 2/3
Paper remaining quantity at 3/3
Rotating plate
MCPED
(Paper empty sensor)
(Paper empty sensor)
Paper remaining quantity
detection actuator
detection actuator
MCSPD
(Paper remaining quantity sensor)
(Paper remaining quantity sensor)
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