It look like a image displacement issue. Give it a cleaning around the ITB, check the drums. You have a manual look for the Displacement Sensors. Check if there soiled.
Here is some more info.
1) Lack of calibration Forcibly execute calibration.
2) Failure in the ITB unit If the ITB does not rotate smoothly.
Replace the ITB unit.
3)If a cleaning failure (dirt on the ITB) occurred,
replace the ITB unit.
4) Wear/cut on the drive gear of the ITB motor
(Drum motor 3)
Check each drive gear between the ITB drive roller
and the ITB motor (Drum motor 3). If wear/cut is
found on the gear, replace the drive assembly.
5) Failure in the color displacement/density
sensor
Open and close the front door several times, and
clean the color displacement/density sensor. If
the failure cannot be removed, replace the color
displacement/density sensor.
6) Failure in the laser scanner unit Replace the laser scanner unit.
7) Failure in the cartridge Replace the cartridge of the color for which color
displacement occurred.
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