Canon 3301B002 On-Screen Manual page 547

Scan Settings Dialog Box
Important
Binding Location cannot be specified when scanning only the front side of each document.
Scanning Resolution
Select the resolution at which to scan documents.
Resolution
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.
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.
Reduce Show-through
Select this checkbox to sharpen text in a document or reduce show-through in newspapers.
Note
Select this checkbox when Document Type is text document and show-through is apparent in the
scanned image.
Remove gutter shadow
Select this checkbox to correct shadows that appear between pages when scanning open booklets.
Important
You cannot select this checkbox when Document Size is Auto Detect, Auto Detect (Multiple
Documents) or Stitch Assist.
You cannot select this checkbox when Document Type is Document (ADF Simplex) or Document
(ADF Duplex).
Align the document correctly with the marks on the Platen.
Note
Use ScanGear's Advanced Mode tab to correct gutter shadows when scanning non-standard size
documents or when custom cropping frames are set.
For details, see Gutter Shadow Correction in "
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
You cannot select this checkbox when Document Size is Stitch Assist.
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
" (ScanGear's Advanced Mode tab).
Image Settings
Page 547 of 997 pages