Canon MX870 Series User Manual page 574

This is preferred when speed is required, as the documents are output in the back-to-front order.
To output the documents in the correct page order, select Output by page.
Output by page
Outputs the scanned documents in the correct page order.
Document Size
Select the size of the document to be scanned.
When scanning both sides of the documents automatically, select A4 or Letter.
Orientation...
Set the orientation and stapling side of the documents to be scanned.
Click to open the Orientation when scanning from ADF dialog box.
Important
Binding Location cannot be specified when a simplex type such as Color Document(Simplex) is
selected for Document Type.
Scanning Resolution
Select the resolution at which to scan documents.
Resolution
Note
The following scanning resolutions can be specified when Document Type is Text(Simplex) or
Text(Duplex).
300 dpi / 400 dpi
Auto Document Fix
Select this checkbox to sharpen text in a document or magazine for better readability.
Important
When this checkbox is selected, the files can be saved in JPEG/Exif or PDF format only.
Scanning may take longer than usual when this checkbox is selected.
You cannot select this checkbox when Document Type is Text(Simplex) or Text(Duplex).
You cannot select this checkbox when the Compress scanned images when transferring
checkbox is selected on the "
The color tone may change from the source image due to corrections. In that case, deselect the
checkbox and scan.
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).
General Tab" of the Preferences dialog box.