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

• Abnormal image at 33.6-mm intervals: Charge roller
• Colored spots at 40.82-mm intervals: Image transfer roller
• Colored spots at 20.9-mm intervals: Development roller
• Abnormal image at 55.4 (center) or 55.0 (end)-mm intervals: Paper transfer roller
• Colored spots at 75.4-mm intervals: OPC drum
• Spots at 78.5-mm intervals: Pressure roller
• Spots at 78.5-mm intervals: Fusing belt