Canon PIXMA MG6821 User Manual - Page 656
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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. Note • Scanning takes longer than usual when you enable Reduce moire. Reduce gutter shadow Reduces gutter shadows that appear between pages when scanning open booklets. Note • Use ScanGear (scanner driver)'s Advanced Mode tab to correct gutter shadows when scanning non-standard size items or specified areas. Refer to "Gutter Shadow Correction" for your model from Home of the Online Manual for details. • When you enable this function, scanning may take longer than usual with network connection. 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. Important • The following types of documents may not be corrected properly since the text cannot be detected correctly. • Documents in which the text lines are inclined more than 10 degrees or the angles vary by line • Documents containing both vertical and horizontal text • Documents with extremely large or small fonts • Documents with small amount of text • Documents containing figures/images • Hand-written text • Documents containing both vertical and horizontal lines (tables) Note • Scanning takes longer than usual when you enable Correct slanted text document. Detect the orientation of text document and rotate image Automatically rotates the image to the correct orientation by detecting the orientation of text in the scanned document. Important • Only text documents written in the language selected from Document Language in the Settings (General Settings) dialog box are supported. • The orientation may not be detected for the following types of settings or documents since the text cannot be detected correctly. • Resolution is outside the range of 300 dpi to 600 dpi • Font size is outside the range of 8 points to 48 points • Documents containing special fonts, effects, italics, or hand-written text • Documents with patterned backgrounds 656