You can recalibrate the exposure adjustment scale if differences between the image on the original and the print occur.
1.
Press 
→ [Adjustment/Maintenance] → [Adjust Image Quality] → [Correct Density].
→ [Adjustment/Maintenance] → [Adjust Image Quality] → [Correct Density].2.
Press [Light] or [Dark] for each function to adjust the exposure → press [OK].