Kyocera Mita DC-1560, Руководство по обслуживанию

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1AF
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Toner density control
Toner density is controlled by switching the toner feed motor on/off using as the reference
the toner sensor output based on the toner sensor initial output value set when simulation
60 was executed when the developer was set. The toner sensor output is also used for toner
empty detection in the toner hopper. On this device, a magnetic proximity sensor toner level
sensor (TLDS) is also used, but the toner remaining amount is not detected until the toner
empty state is detected from the toner sensor output voltage.
Figure 1-3-23
A
When the toner sensor output voltage exceeds the toner feed motor on level, the toner
feed motor intermittent feed (1 s on, 0.5 s off) operation is carried out to feed the toner.
B
When the toner is fed and the toner sensor output voltage falls below the toner feed motor
off level, the intermittent feed operation is stopped.
C
When the toner in the toner hopper runs low and, even though the toner intermittent feed
operation is continued, the toner sensor output voltage rises above the AP detection
level, “AP” blinks on the copy quantity display and the toner feed motor forced feed
(continuously on) operation starts. At the same time, the amount of toner remaining is
detected by the toner level sensor.
Copy operation
max. 3 min.
max. 3 min.
Toner feed motor
off level (2.70)
Toner feed motor
on level (2.72)
Toner empty end
level (3.21)
AP detection level
(3.56)
Toner sensor
output voltage (V)
“AP” blinks on the
copy quantity display.
When no toner is detected by
the TLDS, the add toner
indicator lights here.
Forced feed (continuous operation)
Intermittent feed (1 s on/0.5 s off)
If the level does not go down even
after the additional forced toner
feed, the add toner indicator
lights here.
Intermittent feed (3
minutes max.) until the
toner feed motor off
level is reached.
Forced toner
feed