Repetitive image defect ruler Figure 5-11 Repetitive image defect ruler 154 Troubleshooting/Maintenance C4224-90962 First occurrence of print defect Developing cylinder 32 mm (1.25 in) Primary charging roller 38 mm (1.5 in) Delivery roller 37.7 mm (1.48 in) Transfer roller 45 mm (1.8 in) Pressure roller 62.8 mm (2.5 in) Upper heating element film 76 mm (3.0 in )