Vertical Streaks On Copies Due To Scanning Problems; Overview - Ricoh MP C2504 Field Service Manual

6. Troubleshooting
Vertical Streaks on Copies due to Scanning
Problems

Overview

Marks on prints and copies are mostly due to dirt on the DF exposure glass [A], generally caused by
adhesive contaminants (such as ball point pen ink and correction fluid).
Compared to non-adhesive contaminants (such as paper fragments and eraser dust), adhesive
contaminants are more likely to lead to complaints from customers because of the following:
• Vertical streaks caused by adhesive contaminants are more visible in terms of image quality.
• Unless removed by cleaning, adhesive contaminants continue to produce vertical streaks, while
non-adhesive contaminants stop producing streaks after they are dislodged.
• Many adhesive contaminants are difficult to remove by cleaning.
The ARDF DF3090 / SPDF DF3100 features a system (non-contact scanning) to reduce vertical streaks
caused by adhesive contaminants.
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