Utax CD 1242 Instruction Handbook Manual page 128

Copying Functions
Originals of Different Widths
Place all originals of different widths. The supported combinations of originals are as follows.
NOTE:
When mixing the original sizes as using the following combination: Folio, A4-R, and B5-R, make sure
to set the System Menu key -> Common Settings -> Original / Paper Settings -> Original Auto Detect to [On]
for [Folio].
For more information, refer to Automatic Detection of Originals (Available for metric models only) on page 8-9.
A3, B4, A4 and B5
B4, A4-R and B5
Folio, A4-R and B5-R
4-8 OPERATION GUIDE