2
2
2-53
2-53
Technology > Image Formation System > Various Types of Control > Image Stabilization Control
Technology > Image Formation System > Various Types of Control > Image Stabilization Control
4. Contrast potential (Vcont) determination
Measure the patch image density and determine the Vcont (contrast potential), which is a
target density, based on the density characteristics obtained.
Vd potential
Vl (temporary value)
Vdc (temporary value)
Laser power
Drum Surface
Potential (V)
500V
[1]
[2]
[3]
[4]
[5]
Target density (fixed value)
Vdc
Vcont
(contrast potential)
5. Determination of developing DC (Vdc) and light area potential (Vl)
Determine the Vdc and VI based on the Vcont and Vback (fixed) values.
MEMO :
The Vback values are available for plain paper and coated paper.
6. Laser power (Vl) determination
Determine the target Lp from the VI value based on the E-V characteristics obtained by
potential control.
Vd potential
Vl
Vdc
Laser pawer
Drum Surface
Potential (V)
500V
Lp
Vback
(fixed value)
Vcont
(contrast potential)
F-2-72
F-2-73
●
Simple Potential Control
Measure the VI potential in the Vg and Lp settings applied during printing operation. If the
measurement result differs from the target value by ±10V or more, make a fine adjustment of
the Vg and Lp values using the features of the previous full potential control.
Vl4
50h
90h
C0h F0h Laser power
Drum Surface
Potential (V)
Vl3
Vl2
Vl1
Vl
Lp (laser power)
●
Simple D-max Control
1) Form a patch image in the Lp and Vdc settings applied during printing operation.
2) Measure the patch image density. If the measurement result differs from the target value by
more than the specified value, make a fine adjustment of the Lp and Vdc values using the
features of the previous full D-max control.
Vd potential
Vl (temporary value)
Vdc (temporary value)
Laser power
Drum Surface
Potential (V)
500V
[1]
[2]
[3]
[4]
[5]
Target density (fixed value)
Vdc
Vcont
(contrast potential)
F-2-74
F-2-75
Summary of Contents for imagePRESS 1110
Page 242: ...3 3 Periodical Service Periodical Service Periodical service item ...
Page 655: ...5 5 Adjustment Adjustment Overview When replacing parts Major adjustment ...
Page 944: ...8 8 Service Mode Service Mode Overview COPIER FEEDER SORTER BOARD Situation Mode ...
Page 1555: ... Service Tools General Circuit Diagram General Timing Chart Operator Maintenance Appendix ...