Canon DR-3080CII - Manual (Page 46)

44 Using the Scanner
Note
Make sure that the left edge of the document does not extend to the left of
the
mark. A paper jam may occur if you begin to scan a document that is
positioned at this mark.
LTR
A4 B4
4. Place the document on the paper feed tray so that the document is face up.
IMPORTANT
There are stacking limit marks ( ) indicated on the paper feed tray. Do not
load pages in excess of this mark. (The mark is equivalent to a capacity of
approximately 100 sheets of ordinary copier paper (80 g/m
2 ).)