The arrows in the illustration indicate the paper ejection direction.
You may be able to reduce paper misalignments by selecting the following menu. Note that printing may take longer.
Settings > General Settings > Printer Settings > Optimize Finishing > Align when Staple > On
Changing the settings in the following menu may reduce paper misalignment. When this setting is Off, set it to On. When it is On, set it to Off.
Settings > General Settings > Printer Settings > Finisher Tray Setting > Paper Delivering Adjustment
Lower the density setting. If the density is too high, paper may be wavy or curled which can cause this problem.