Oki C3530nMFP Maintenance Manual page 26

Outline of Color registration Method
Color registration is performed by reading the correction pattern printed on the belt using the
sensor placed in the sensor shutter equipped under the belt unit. The correction is made by
identifying the pattern using this sensor.
Timing of automatic activation of color registration:
• At the time of switching the power on
• At the time of closing the cover after opening it over 5 seconds
• When over 400 sheets are printed after a color registration was made previously
Correction errors can be caused by the amount of toner which generates the pattern, toner
stain on the sensor, malfunction of shutter opening and closing. However, as an error may
not be displayed on the operation panel, it may be necessary to confirm the error display by
forcible execution of the color registration test function (2.4.1.5.3) using the maintenance utility.
Error Confirmation Method and Countermeasure
Errors should be confirmed by using the color registration test function of the maintenance
utility (2.4.1.5.3).
Countermeasures to each error are:
Belt motor
43605601TH Rev. 1
Sensor shutter
Color Registration sensor
Color Registration sensor
Right color registration pattern
Left color registration pattern
Color Registration sensor
Belt waste toner box
Belt cleaning blade
Oki Data CONFIDENTIAL
Transport belt
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