Canon PIXMA MP460 User's Guide - Page 116
Scan Quality Is Poor Poor Image Displayed On The Monitor, Parts Of Image Missing Or Surrounded
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Scan Quality Is Poor (Poor Image Displayed On The Monitor) Cause Incorrect scan settings. Specification of the application program. Moiré appears. Inappropriate display settings. Action Rescan with adjusted settings. (See the Scanning Guide) Some application programs do not display the image clearly if the image is too small. Set the view mode to 100%. Select [Magazine (Color)] for Select Source in the Simple Mode or turn on the [Descreen] option in the Advanced Mode of ScanGear. Turn off the [Unsharp Mask] function if the moiré effect is still too strong even when the Descreen option is on. (See the Scanning Guide) Set the display settings on your computer to Medium (16 bit) or higher. Dirty Platen Glass or Document Cover. In the [System Preferences] dialog, click the [Displays] icon and select the [Display] tab. Set the [Colors] list box to [Thousands] or a higher setting. Clean the Platen Glass or the Document Cover of the machine, taking special care not to press strongly on the Platen Glass. The status of the original is poor. Scan with certain functions such as [Reduce Dust and Scratches], [Fading Correction] or [Grain Correction] in the Image Settings section of the Advanced Mode of ScanGear. Note If the printout of an image does not appear satisfactory or the same as what you see on the monitor, you may need to change the machine's settings, or the machine itself may have some problems. The color of a preview image or a scanned image is different from the original when scanning an image with a plain background like the blue sky. Set [Auto Tone] to [OFF] in ScanGear, and rescan. For details, refer to the Scanning Guide. Parts Of Image Missing Or Surrounded By Extra White Areas Cause Scan area was specified larger than the original. Action Specify the scan area appropriately. If you click the Auto crop button of the ScanGear, the scan area is adjusted automatically to match the size of the original. When scanning an original surrounded by white borders such as a photo print, of if you otherwise want to specify a custom scan area, specify the scan area manually. Refer to the Scanning Guide for details on manual scan area specification. 114 Troubleshooting Chapter 11