Ricoh SP C250DN Operating Instructions Manual page 52

2. Loading Paper
• You may not be able to perform duplex printing on 8 × 13, 8
or 16K (195 mm × 267 mm) size paper in the following cases:
• PCL printer driver
When [Gradation:] in [Print Quality] is set to [Fine]
• PostScript 3 printer driver
When [Print Quality] in [Printer Features] is set to [Best Quality]
50
1 1
/ × 13, Folio (8 / × 13 inches),
2 4