There are two decurl paths in the decurl unit.
- The upper path [A] is used to correct back curl (convex, leading and trailing edges curling under)
- The lower path [B] is used to correct front curl. (concave, leading and trailing edges curling up)
The upper path is used for all printing modes and paper types, adjustable with SP1906-1 to 12. There is one SP setting for each of the 12 paper feed sources: Tray 1, 2, 3 (main machine), Trays 4, 5, 6 (LCIT), Tray 7 (Multi Bypass), and Tray T1, T2, T3, T4 (Vacuum Feed LCIT).
The decurl unit settings are as follows.
User Setting | Decurl Path | Decurl Roller Nip |
|---|---|---|
Front curl correction (weak) | Lower path | 1.5 mm |
Front curl correction (strong) | Lower path | 1.8 mm |
Normal (decurl not selected) | Upper path | 0.3 mm |
Back curl correction (weak) | Upper path | 1.5 mm |
Back curl correction (strong) | Upper path | 1.8 mm |