Plain paper
Fine paper
Recycled paper
Thermal paper
The loadable size varies depending on the type of the originals, the scanning resolution, and the scanning method.
All originals must be flat at the leading edge.
Make sure that curls on the leading edge of the originals are kept within the following range.
must be 5 mm (0.2 in.) or less.
must be 3 mm (0.12 in.) or less.
must be equal to or greater than
if
or
is 1 mm (0.04 in.) or less. If
or
is greater than 1 mm (0.04 in.), it should be at least 10 times the size of
.

Even when the original meets the specifications for originals that can be placed in the ADF, it may not feed from the ADF depending on the paper properties or quality. Additionally, some originals may decrease the scan quality.
For these types of originals, use the scanner glass.