43827101TH Rev.2
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Oki Data CONFIDENTIAL
Outline of color drift correction
The color drift correction is implemented reading the correction pattern that is printed on the belt
with the sensor located inside the sensor shutter under the belt unit. This sensor is used to detect
and correct the pattern.
Automatic start timing of color drift correction:
•
At power-on
•
When the cover is closed after it is opened briefly
•
When 400 pages or more have been printed since previous execution
A correction error may be issued due to an inadequate toner amount of the pattern generated,
a sensor stained with toner, deficient opening/closing of the shutter, or for other reasons.
However, even if an error is issued, it is not indicated on the operator panel. Therefore,
forcible color drift correction will have to be performed in the self-diagnostic mode (Subsection
5.3.2.6) to check the error indication.
Belt motor
Belt waste toner box
Transport belt
Sensor shutter
Belt cleaning blade
Right color drift correction pattern
Color drift sensor
Color drift sensor
Color drift sensor
Left color drift correction pattern