Olivetti d-COPIA 255MF Operation Manual page 265

Advanced Function Settings > [Collate/Offset]
Offset
Without Document Finisher (Option)
When offset is used, the paper of each set (or each page) is rotated 90 degrees when output.
NOTE
When offset is used without a Document Finisher, an additional paper feed unit is required. The paper size of
the additional paper feed unit must be the same as that of the selected paper feed unit, but the paper orientation
must be different.
The paper sizes supported in Offset: A4, B5, Letter, 16K
Without Document Finisher (Option)
When offset is used, the paper of each set (or each page) is offset when output.
Off
Collate Only
Offset Each Page
Offset Each Set
Item
Sort and offset are not performed.
Collate Only
Each page is offset.
Offset Each Set
6-11
Description