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COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
6-15
CHAPTER 6 IMAGE FORMATION SYSTEM
Figure 6-213 Sequence of Control
3. Density Adjustment during Printing (scanner input)
Table 6-204 Timing of Control
WMUPR
WMUP
STBY
195˚C
200˚C
Potential sensor
Laser
Grid bias
Vg
Pw
VD
VL
Potential determined
Vg
Pw
Vdc
1
9
3
5
7
-20V
Density
Darker
Lighter
x 0.8
x 1.0
x 1.2
x 1.5
The laser power/Vdc is corrected
according to the F setting.
Laser power
correction value
Vdc
correction value
Potential control
sequence started.
F value
COPIER>OPTION>USER>
PM-DENS
(density setting mode on/off during
printing)
1: correct the target value to enable variation of density
during printing. (default)
0: disable the mechanism used to vary the density during
printing.
Related Service Mode
Potential control
COPIER > OPTION > BODY > PM-DENS
Set
F setting updated
Main power switch
OFF/ON
Copy Start key
ON
The laser power/Vdc is used
to suit the F value setting.