01/02
6-26
8825/8830 Printer
Photoreceptor Damage, Image Displacement (Roll-
General Procedures
Photoreceptor Damage
PROBLEM
Scoring or scraping of the photoreceptor is occurring during normal operation.
CAUSE
There is more than one possible cause of this problem. These causes are listed below.
SOLUTION
1. Ensure that the plastic “skis” are still in position on the top of the turn baffle.
2. Ensure that the plastic “skis” that are located on the outside top of the turn baffle do not
contact the photoreceptor. To check this remove the developer housing and place a piece
of paper between the “skis” and the photoreceptor. The paper should pass freely
between them. If it does not perform the transport adjustment.
3. Inspect the DRS rollers on the developer housing. These rollers are constructed from a
bearing with a plastic sleeve on the outside. Ensure that the plastic sleeve is not dam-
aged or missing. Replace rollers as required.
Image Displacement (Rollover) On Vellum Or Film
PROBLEM
( Figure 1): Image displacement (rollover).
CAUSE
There are many factors that can aggravate this problem but the main cause is the print buck-
ling and pulling away from the Heat Roll between the fuser nip and the exit. At this point in
time, due the toner pile height, not all of the image is fused and the top surface of the image
stays with the Heat Roll. The buckle causes the media to move slightly slower than the Heat
Roll, so when the Heat Roll and the media make contact again the image is placed slightly
ahead of where it should be.
SOLUTION
Check the following:
• Ensure that the image density is set within machine specifications. If the density is set too
high it will make the problem worse.
• Slightly increase the fuser temperature. More heat will help ensure that the image will
fuse fully.
• Replace the fabric guide and if required the Heat Roll.
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