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MX-DE28 OPERATIONAL DESCRIPTIONS 5 – 7
B. Paper feed tray 3, 4
When the upper limit detector is ON and the tray is lifted up,
The amount of the remaining paper in the tray is 0% (no paper) when the paper level detector detects the empty of the paper.
The amount of the remaining paper is determined in three stages by changing the paper level detector position as the following table and figure
shown until the upper limit detector is ON after the tray is inserted and lifted up when the paper level detector detects the paper.
The paper feeder determines the remaining paper level based on how many times the paper level detector turns ON during the time between
the start of the lift-up of the paper feed tray and the activation (turning ON) of the upper limit detector.
the start of the lift-up of the paper feed tray and the activation (turning ON) of the upper limit detector.
State transition chart: How the paper level detector state changes according to the amount of paper actually remaining during tray
lift-up
lift-up
Left tray(Tray 3)
Right tray(Tray 4)
0%
0%
Paper empty detector ON (No paper)
6%
9%
Paper level detector -> Transparent -> Light block -> Transparent
Refer to the following Figure 1.
33%
50%
Paper level detector -> Transparent -> Light block
Refer to the following Figure 2.
100%
100%
Paper level detector -> Transparent
Refer to the following Figure 3.
Lift up
Lift up
Paper empty detector
(D1PED,D2PED)
<Figure 1>
<Figure 2>
<Figure 3>
Upper limit detector
(D1LUD, D2LUD)
Paper level detector
(D1PQD, D2PQD)
(Transparent) Low
Paper level detector
(D1PQD, D2PQD)
(Transparent) High
Paper level detector
(D1PQD, D2PQD)
(Light block) High
Paper level detector
(D1PQD, D2PQD)
(Transparent) Low
Paper empty detector
(D1PED,D2PED)
Upper limit detector
(D1LUD, D2LUD)
Paper level detector
(D1PQD, D2PQD)
(Light block) High
Paper level detector
(D1PQD, D2PQD)
(Transparent) Low
Lift up is stopped
Lift up is stopped
Paper empty detector
(D1PED,D2PED)
Upper limit detector
(D1LUD, D2LUD)
Paper level detector
(D1PQD, D2PQD)
(Transparent) Low
Lift up is stopped
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