When you keep printing using sheets of paper such as A4 SEF or A5, which is narrower than the maximum printable paper this machine supports, and then keep printing using sheets of paper such as A4 LEF or A3 SEF, which is wider than those used in the previous print job, toner smears may appear on the backside of the printouts depending on your environment or usage.
Specifying this setting prevents the fusing unit temperature from becoming too high, so that the consistent print quality can be maintained.
Specifying [Quality Priority] takes longer than normal printing. Also, printing may stop for approximately 40 seconds as the machine cools down before the next print job starts.
Select [Quality Priority].
Menu > Maintenance > Quality Maintenance > Fusing Unit Ctrl Priority
If toner smears also appear when you consecutively print a small size paper, do the following procedure.
Enter SP mode.
Set SP-1-990-001 (Speed Change 0:LOW 1:HIGH) to 0.