Canon mp620 - Manual (Page 719)

Advanced Guide > Troubleshooting > Problems with Scanning > Slow Scanning Speed
Slow Scanning Speed
Check 1: To view the image on a monitor, set the output resolution to
around 150 dpi. To print, set it to around 300 dpi.
Resolution
Check 2: Disable Fading Correction, Grain Correction, etc.
Image Settings
Check 3: In MP Navigator EX, deselect the Correct slanted document
checkbox and scan again.
Scan Settings Dialog Box
Check 4: In MP Navigator EX, deselect the Detect the orientation of text
documents and rotate images checkbox and scan again.
Scan Settings Dialog Box
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