Canon C850 Practical Manual page 133

When Your Printouts Look Like���
When paper with a longer width is used
after copying or printing large volumes
of paper with a shorter width, dirty black
bars appear on the left and right edges of
paper�
← Feeding Direction
When paper with a longer width is used
after copying or printing large volumes of
paper with a shorter width, colors on the
left and right edges are faint�
← Feeding Direction
Problems with Printouts That Look Like the Following Images
Check the Cause and Remedy Below
Cause
Both sides of the pressure belt are dirty�
Remedy
Clean the pressure belt�
→ [Adjustment/Maintenance] → [Maintenance]
Press
→ [Clean Belt]�
"Maintenance" > "Output Paper Becomes Dirty (Belt
Cleaning)" in the User's Guide
Cause
The primary voltage that transfers toner to the paper
does not match the specific characteristics of the paper�
Remedy
To improve this situation, adjust the value for <Adj�
Primary Transfer Voltage> to match the specific
characteristics of the paper�
→ [Preferences] → [Paper Settings] → [Paper
Press
Type Management Settings] → select the type of paper
you are using that is having this problem → press
[Details/Edit] → [Change] for <Adj� Primary Transfer
Voltage> → adjust the voltage value of black toward the
minus end�
"Paper Type Management" > "Adjusting the Primary
Transfer Voltage" in the User's Guide
imagePRESS C850/C750/C650/C65
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