Problem at Regular Intervals

Image problems may appear at regular intervals that depend on the circumference of certain components.

The following diagram shows the possible symptoms (black or white dots at regular intervals).

[A]: Paper feed direction

[B]: Problems at regular intervals

• Colored spots at 47-mm intervals: Development roller

• Abnormal image at 51-mm intervals: ITB drive or bias roller

• Abnormal image at 85-mm intervals: Paper transfer roller

• Colored spots at 119-mm intervals: Drum

• Abnormal image at 101-mm intervals: Fusing unit (Pressure roller)

• Abnormal image at 107-mm intervals: Fusing unit (Heating roller)