Canon PIXMA MX870 - Manual (Page 1008)

Advanced Guide > Troubleshooting > Problems with Scanning > Scan Quality (Image Displayed on the Monitor) Is Poor
Scan Quality (Image Displayed on the Monitor) Is Poor
Check 1: Increase the scanning resolution.
Resolution
Check 2: Set the scale to 100%.
Some applications do not display images clearly if the image is too small.
Check 3: If moire (stripe pattern) appears, take the following measures and
scan again.
On the Basic Mode tab of ScanGear (scanner driver), select Magazine(Color) in Select Source.
Basic Mode Tab
On the Advanced Mode tab of ScanGear, set Descreen in Image Settings to ON.
Image Settings
Note
If moire appears when you scan a digital print photo, take the above measures and scan again.
If you use MP Navigator EX, set Document Type to Magazine(Color) or enable Descreen in the Scan
Settings dialog box and scan again.
Scan Settings Dialog Box (Photos/Documents)
Check 4: Check the monitor's color depth.
Windows 7:
From the Start menu, select Control Panel > Appearance and Personalization > Adjust screen
resolution > Preferences.
On the Monitor tab of the displayed dialog box, set Colors to High Color (16 bit), True Color (24 bit) or
True Color (32 bit).
Windows Vista:
From the Start menu, select Control Panel > Appearance and Personalization > Adjust screen
resolution to open the Display Settings dialog box. Set the color depth to Medium (16 bit) or Highest
(32 bit).
Windows XP:
From the Start menu, select Control Panel > Display to open the Display Properties dialog box. On
the Settings tab, set Colors to Medium (16 bit) or Highest (32 bit).
Windows 2000:
From the Start menu, select Settings > Control Panel > Display to open the Display Properties dialog
box. On the Settings tab, set Colors to High Color (16 bit) or True Color (32 bit).
Check 5: Clean the Platen and Document Cover.
Cleaning the Platen Glass and Document Cover
Check 6: If the document is in poor condition (dirty, faded, etc.), use
Reduce Dust and Scratches, Fading Correction, Grain Correction, etc. in
Image Settings on the Advanced Mode tab of ScanGear.
Image Settings
Check 7: If the color tone of images is different from the original document,
take the following measures and scan again.
Page 1008 of 1127 pages Scan Quality (Image Displayed on the Monitor) Is Poor