pg. 100
Symptom
Stained image at the intervals of approx. 264mm/ approx. 127mm/ approx. 63mm/ approx. 53mm
[Inspected by Canon Inc. ]
Description
Uneven density at regular intervals occurred because the surface of the Photosensitive Drum/ Developing
Cylinder/ Fixing Roller got dirty/ flawed and caused uneven density at regular intervals in field cases as the
below table shows.
Product series
Regular intervals (pitch) of
Uneven Density
Cause
iR-ADV 8105/6075
approx. 264mm
Photosensitive Drum
iR-ADV 8105/6075
approx. 127mm
Fixing Roller
iR-ADV 8105
approx. 63mm
Developing Assembly
iR-ADV 6075
approx. 53mm
Developing Assembly
Field Remedy
1) Run test copy to measure the length of the pitch, and locate where the symptom occurs.
2) If the locations identified in the step 1) is soiled, perform cleaning to them. When the location has flaws
on it, then replace with the new part.