Canon imageRUNNER ADVANCE C5255 Series Service Manual page 110

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Technology > Image Formation System > Controls > Image stabilization control
● ATR control
This control supplies developer to the developing assembly to keep ideal ratio of developer in
the developing assembly
Timing to start
When replacing with a new drum unit (ATR sensor)
At every print (Developing Assembly Toner Supply Count, ATR sensor)
In the case of post-rotation every time the total reaches 150 prints or continuous print, the job
is interrupted when the total reaches 250 prints to execute this control (patch sensor)
Control description
Developer is supplied to the drum unit while the supplying amount of the developer for
each color is calculated by the above-mentioned start timing. The DC controller determines
supplying amount of toner by 3 types of data as follows.
• Developing Assembly Toner Supply Count
• ATR sensor
• Patch sensor
When the DC controller determines that it is necessary to supply toner, the developing motors
(M5 to M8) and the toner supply clutches (CL2 to CL5) are turned ON. This operation rotates
the toner feeding screw A/B so that the specified amount of developer is supplied to the
developing assembly.
Hopper assembly
Toner feeding
screw
Developing Toner supply
motor clutch
M5~M8 CL2~CL5
Toner supply levelsensor
(PS1~PS4)
DC controller(UN1)
Developing assembly toner supply Count
ATR sensor Result
Patch sensor Result
2 Technology > Image Formation System > Controls > Image stabilization control
Developing assembly
Developing cylinder
Toner feeding ATR sensor
(TS5～TS8)
screwA/B
Patch sensor
(center)(UN49)
F-2-104
Related Error Codes
E020-001x: Error in patch sensor of developing assembly (at initial state) (more than the upper
limit)
E020-002x: Error in patch sensor of developing assembly (at initial state) (less than the lower
limit)
E020-010x: Error in patch sensor (more than the upper limit)
E020-020x: Error in patch sensor (less than the lower limit)
E020-0x30: Error in ATR sensor (less than the lower limit, at initial state)
E020-0x31: Error in ATR sensor (less than the upper limit, at initial state)
E020-0x40: Error in ATR sensor (the control voltage less than the lower limit, at initial state)
E020-0x41: Error in ATR sensor (the control voltage less than the upper limit, at initial state)
E020-0x90: Error in ATR sensor (less than the lower limit)
E020-0x91: Error in ATR sensor (more than the upper limit)
E020-0xB0: Error in developer ratio when making prints (less than the lower limit)
E020-0xB1: Error in developer ration when making prints (more than the upper limit)
x indicates the target color (1=Y, 2=M, 3=C, 4=Bk)
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