Soiled Image On The 1St Side Of 2-Sided Print - Canon imagePRESS C10000VPSeries Troubleshooting Manual

Soiled image on the 1st side of 2-sided print

[Symptom]
Soiling of many small black spots appears on the 1st side of 2-sided print.
[Cause]
When continuously feeding paper containing a high proportion of calcium carbonate (especially Mondi or UPM Fine, etc.), the
PFA (material of belt surface) of the Pressure Belt Unit in the Primary Fixing Assembly is abraded when paper passes through
the Primary Fixing Assembly and adhered to the back side of paper. This soiling is fed to the Secondary Fixing Assembly and
transferred onto the Pressure Roller (which soils the Pressure Roller).
When 2-sided printing is performed in this state, the soiling of the Pressure Roller is adhered to the image on the 1st side on
which toner is deposited at the time the 2nd side passes through the Secondary Fixing Assembly.
[Service work]
Execute the following service mode to perform forced Pressure Roller cleaning:
Service Mode > COPIER > FUNCTION > CLEANING > FX2PR-CL
After the execution of cleaning, feed 3 to 10 sheets of waste paper (2-sided solid Y-color, 13 x 19 / coated paper) in order to
remove the soiling. (Until the black soiling disappears on the solid Y color)
[CAUTION]
The soiling is not completely removed even if the forced Pressure Roller cleaning is performed. However, if it does not affect
images, replacement is not necessary.
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