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Technical Explanation > Image Formation System > Controls > Toner Supply Area
Technical Explanation > Image Formation System > Controls > Toner Supply Area
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Toner Container Detection
Presence/absence of the Toner Container is detected.
The Toner Supply Sensor (Y/M/C/Bk) (PS26/PS27/PS28/PS29) is arranged as shown in the
figure below; when the Toner Container is inserted, the sensor reacts and the Toner Container
is detected.
< ON >
Toner Container
Cut-off
Toner Supply Sensor
Flag
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ATR (Auto Toner Replenishment) Control
Purpose: To supply toner to the Developing Unit to achieve an ideal ratio of the developer
(toner + carrier) in the Developing Unit.
Control timing
Adjustment timing
Conditions
Automatic adjustment
by the accumulation of
video count values
At job completion
For each accumulated video count value of 1500%
At paper interval
For each accumulated video count value of 3000%
At initial installation
Power on
At initial installation
Control description:
The toner density of each color is corrected to the target value at the abovementioned
control timing and is controlled to achieve an appropriate toner supply to the Developing
Unit. The DC Controller PCB determines toner supply amount by the following 2 data:
• Toner Density Sensor output value (DC Controller)
• Video count value (Main Controller)
The DC Controller PCB turns ON the Bottle Motors (YM)/(CK) (M04/05) when it determines
that toner supply is necessary.
This supplies the specified amount of toner to the Developing Unit.
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M10
M04
M05
PS26,27,28,29
UN39,40,41,42
UN21,22,23,24
UN04
UN05
[1]
Video Count Value
Developing Assembly supply count
ATR Sensor result
Main Controller PCB
DC Controller PCB
Hopper Unit
Developing Motor
Toner Supply Sensor
Toner Log Connector
Bottle Motor(YM)
Bottle Motor(CK)
ATR Sensor
Related Error Code:
E020-01A8/01B8 : ATR Sensor (Y) output error
E020-02A8/02B8 : ATR Sensor (M) output error
E020-03A8/03B8 : ATR Sensor (C) output error
E020-04A8/04B8 : ATR Sensor (Bk) output error
E020-01C8 : Error in take-up of Sealing Member (Y)
E020-02C8 : Error in take-up of Sealing Member (M)
E020-03C8 : Error in take-up of Sealing Member (C)
E020-04C8 : Error in take-up of Sealing Member (Bk)
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