Canon MX870 Series User Manual page 618

Important
You cannot select this checkbox when Auto Detect, Auto Detect (Multiple Documents) or Stitch
Assist is selected for Document Size.
You cannot select this checkbox when Document Type is Document (ADF Simplex) or Document
(ADF Duplex).
Align the document correctly with the alignment mark on the Platen.
Note
Use ScanGear (scanner driver)'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 "
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.
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
- 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
You cannot select this checkbox when Document Size is Stitch Assist.
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.
- 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
Note
Scanning takes longer than usual when you enable Detect the orientation of text documents and
rotate images.
Document Language
Select the language of the document to be scanned.
Image Settings " (ScanGear's Advanced Mode tab).