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Technology > Image Formation System > Various Types of Control > Image Stabilization Control
Technology > Image Formation System > Various Types of Control > Image Stabilization Control
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Full Potential Control / Full D-max Control
In this control, the gird bias, E-V characteristics, laser power and the developing bias are
decided to correct the image density change due to the environment change or extended use
of the photosensitive drum.
Timing
1) At the time of multiple initial rotation(fixing temperature of lower than 50 degree C)
2) At the time of last rotation after 2000 prints
3) At the time of execution of PASCAL control
Related Error Code
• Potential control error.
E061-0001/0002/0003/0004/0005/0006
Related Service Mode
• Execution of the potential control.
COPIER > FUNCTION > DPC > DPC
• Execution of the offset adjustment of the potential control circuit.
COPIER > FUNCTION > DPC > OFST
Description
1. Determination of Grid bias (Vg)
Apply three levels of Vg (500V, 750V, and 900V), measure the Vd potential for each level
using the potential sensor, and determine the Vg so that the Vd potential at the developing
position becomes 500V.
(V)
(V)
Vd1
500V
750V 900V
500V
Grid Bias
Drum Surface
Potential
Vd2
Vd3
Vg (Grid Bias)
F-2-69
2. Calculate the E-V (Exposure - Potential) characteristics
Apply four levels of laser power (Lp) (50h, 90h, C0h, and F0h) in the condition where the
determined Vg is applied, measure the VI potential (VI 1 to 4) for each level, and calculate
the E-V (Exposure - Potential) characteristics.
Vl4
50h
90h
C0h F0h
Laser power
Drum Surface
Potential (V)
Vl3
Vl2
Vl1
Vd potential
500V
Vl potential
E-V
characteristics
3. Patch image formation
Form a patch image to which 5 levels (±25V, 1±50V based on the value considered as a
target during potential control) of Lp and Vdc are applied to the ITB in the condition where
the Vg obtained by potential control is applied.
Vd potential
Laser power
Drum Surface
Potential (V)
500V
[1]
[2]
[3]
[4]
[5]
Vl (temporary value)
Vdc (temporary value)
F-2-70
F-2-71
Содержание imagePRESS 1110
Страница 242: ...3 3 Periodical Service Periodical Service Periodical service item ...
Страница 655: ...5 5 Adjustment Adjustment Overview When replacing parts Major adjustment ...
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Страница 944: ...8 8 Service Mode Service Mode Overview COPIER FEEDER SORTER BOARD Situation Mode ...
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