Canon PIXMA MG6620 User Manual - Page 556
Scan res, Preview, Reduce show-thru, Descreen, Unsharp mask
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3. Scan res (Scan resolution) Select the resolution for scanning. 4. Preview This setting is not available. 5. Reduce show-thru (Reducing show-through) Characters on the back may show through when scanning a thin document such as a newspaper. Select ON if characters seem to show through on the scanned document. This setting item is not available when Photo is selected for Doc.type. 6. Descreen A printout consists of minute dots to make characters or graphs. Interfering with each dot may result in uneven shades or a striped pattern. Select ON if you notice any uneven shades or a striped pattern on the scanned image. This setting item is not available when Photo is selected for Doc.type. Note • Even if ON is selected for this setting, some moire effects may remain if Unsharp mask is set to ON. In that case, select OFF for Unsharp mask. 7. Unsharp mask The outline of small characters or thin objects such as a hair or leaves on a photo can be accentuated. Select ON if you want to accentuate the outline of the scanned data. 556