Loading Documents In The Adf - Canon MF55DD Series Basic Manual

The illustration below shows how to place an LTR-size document on the platen
glass.
3

Loading Documents in the ADF

NOTE
Make sure there is no document on the platen glass.
1
Fan the edges that will feed into the machine first, then tap the
edges of multiple page documents on a flat surface to even the
stack.
3-4 Setting Up Documents