Canon FB620U Product Setup, User Guides & Manuals - Page 37

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Stripes appear on scan of publication Cause: Moiré effect from scan of publication at high resolution (print screen lines highlighted by optical interference, producing striped patterns). The appear- ance of this effect is dependent upon particular combinations of screen line densities and scanning resolutions Solution: Rescan at different resolutions (See the ScanGear CS-U User's Guide electronic manual) Whitened edges on image scanned from thick book Cause: Scanner employs an ultra-sensitive scanning unit that picks up ambient light if document cover cannot stop light from entering around the edges of the book Solution: Cover the book and document glass with a dark cloth to prevent ambient light from affecting the scan Slow scanning speed Cause: Resolution is set higher than necessary Solution: Lower the resolution. Other questions Can a Film Adapter Unit be used with this scanner? Answer: No Can Automatic Document Feeder be used with this scanner? Answer: No 37

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37
Stripes appear on scan of publication
Cause:
Moiré effect from scan of publication at high resolution (print screen lines
highlighted by optical interference, producing striped patterns).
The appear-
ance of this effect is dependent upon particular combinations of screen line
densities and scanning resolutions
Solution:
Rescan at different resolutions (See the ScanGear CS-U User’s Guide
electronic manual)
Whitened edges on image scanned from thick book
Cause:
Scanner employs an ultra-sensitive scanning unit that picks up ambient light if
document cover cannot stop light from entering around the edges of the book
Solution:
Cover the book and document glass with a dark cloth to prevent ambient
light from affecting the scan
Slow scanning speed
Cause:
Resolution is set higher than necessary
Solution:
Lower the resolution.
Other questions
Can a Film Adapter Unit be used with this scanner?
Answer:
No
Can Automatic Document Feeder be used with this scanner?
Answer:
No