Canon PIXMA MX320 On-Screen Manual - Page 434

Scan Settings Dialog Box (Stack of Documents (ADF)) Page 434 of 817 pages Text(Duplex). 300 dpi / 400 dpi Descreen Select this checkbox to reduce moire patterns. Printed photos and pictures 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. Descreen is the function for reducing this moire effect. Important You cannot select this checkbox when Document Type is Text(Simplex) or Text(Duplex). Note Scanning takes longer than usual when you enable Descreen. Unsharp Mask Select this checkbox to emphasize the outline of the subjects and sharpen the image. Important You cannot select this checkbox when Document Type is Text(Simplex) or Text(Duplex). Reduce Show-through Select this checkbox to sharpen text in a document or reduce show-through in newspapers. Important You cannot select this checkbox when Document Type is Text(Simplex) or Text(Duplex). Note Select this checkbox when Document Type is text document and show-through is apparent in the scanned image. Correct slanted document Select this checkbox to detect the scanned text and correct the angle (within -0.1 to -10 degrees or +0.1 to +10 degrees) of the document. Important The inclination of the following types of documents may not be corrected, as 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 or hand-written text - Documents containing both vertical and horizontal lines (tables) Note Scanning takes longer than usual when you enable Correct slanted document. Detect the orientation of text documents and rotate images Select this checkbox to detect the orientation of the document from the scanned text and rotate the scanned image to the correct orientation. Select the language of the document to be scanned in Document Language. Important This function may not work properly depending on the document language. Only text documents written in languages that can be selected from Document Language are supported. The orientation of the following types of documents may not be corrected, as the text cannot be detected correctly. In that case, select the scanned image in the Thumbnail window of the " Stack of Documents (ADF) Screen (Scan/Import Window) " and rotate it with Edit Tools. - 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