Canon DR-2050SP - Manual (Page 28)

22 Using the Scanner
Using the Document Guide Adapter
When a document becomes skewed during scanning or when scanning a
document that is folded in half (See p. 27.), install the document guide adapter
on the document guide to keep the document from becoming skewed.
Install the document guide adapter by positioning it as shown in the
illustration. Insert the legs of the document guide adapter as far as they go into
the document guide.
Note
If document skew is not remedied by installing the document guide adapter, set
deskew to on in the ISIS/TWAIN driver settings. (See p. 49.)
Using the Feed Extension Plate
Under the following conditions, install the document guide adapter, set the
document in the scanner, and then pull out the feed extension Plate.
• When the document falls forward
• When the document tends to bend forward because the paper is very thin,
etc.