Canon MX490 series Online Manual page 547

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Image Processing Settings

(Plus) to set the following.

Apply Auto Document Fix

Select this checkbox to sharpen text in a document or magazine for better readability.

• The color tone may differ from the source image due to corrections. In that case, deselect

the checkbox and scan.

• Scanning takes longer than usual when you enable this function.

Sharpen outline

Emphasizes the outline of the subjects to sharpen the image.

Reduce show-through

Sharpens text in an item or reduces show-through in newspapers, etc.

Reduce moire

Reduces moire patterns.

Printed materials are displayed as a collection of fine dots. "Moire" is a phenomenon where

uneven gradation or a stripe pattern appears when such photos or pictures printed with fine dots

are scanned.

• Scanning takes longer than usual when you enable Reduce moire.

Reduce gutter shadow (platen)

Reduces gutter shadows that appear between pages when scanning open booklets.

• This function is available only when scanning from the platen.

• When you enable this function, scanning may take longer than usual with network

Correct slanted text document

Detects the scanned text and corrects the angle (within -0.1 to -10 degrees or +0.1 to +10

degrees) of the document.

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Troubleshooting