Chapter 17 Troubleshooting
Judgment standards for polygon pitch unevenness and feed unevenness
Division procedure:Output a FLAT pattern (approx. 1.5D), observe with a magnifying glass, and divide by the
intervals between unevenness.
Unevenness
Polygon pitch unevenness
Feed unevenness
17-10
Phenomenon
0.157mm interval unevenness
0.5mm interval unevenness
11mm interval unevenness
Two to three short
horizontal lines
Solution
Correction
•
Replace feed unit moderation belt
•
Replace feed unit propagation belt
•
Replace feed unit drive motor pulley