HP LaserJet Pro CM1415 HP LaserJet Pro CM1410 - Software Technical Reference - Page 207
Repetitive image defects, ruler by using these measurements. For the most accurate results
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Repetitive image defects If the product output has a consistent, repetitive defect, then use the table in this section to determine which part needs to be replaced based on the measured distance between the repetitions of the defect. NOTE: The following table replaces the graphical repetitive defect ruler. You can make your own ruler by using these measurements. For the most accurate results, use a metric ruler. Table 6-2 Repetitive image defects Distance between identical defects Component Notes 22.3 mm (0.87 in) 26.7 mm (1.05 in) 28.5 mm (1.12 in) 44.0 mm (1.73 in) 56.5 mm (2.22 in) 56.8 mm (2.23 in) 57.0 mm (2.24 in) 69.0 mm (2.71 in) 75.8 mm (2.98 in) 633.6 mm (24.94 in) Developer roller (one rotation) Appears in a single color plane. Charger roller Appears in a single color plane. Developer RS roller (one rotation) Inside developer, this roller removes and supplies toner to the developer sleeve. Registration roller Fuser film (one rotation) Appears in all color planes. Fuser pressure roller (one rotation) Appears in all color planes. Transfer roller Appears in all color planes. Cartridge-to-cartridge spacing Distance between each color image drum Image drum (one rotation) Appears in a single color plane and might be either a dark or white spot. ITB Because the ITB is longer than a page, you might have to look at multiple pages to determine if repetitive defect is present. ENWW Improve print quality 187