Solutions
You may be able to solve the problem using one of, or a combination of, the following solutions. These are the same when the optional finisher is installed.
Select the following according to the output tray for paper from the menus on the control panel or the printer driver.
Depending on your environment, printing speed may decrease.
When ejecting paper to the face down tray or the inner tray
Disable Print Speed Priority (Control panel only).
Settings > General Settings > Printer Settings > Print Speed Priority > Off
When ejecting paper to the finisher
Enable Optimize Finishing.
Control panel
When stapling: Settings > General Settings > Printer Settings > Optimize Finishing > Align when Staple > On
When not stapling: Settings > General Settings > Printer Settings > Optimize Finishing > Align when Non-staple > On
When saddle stitching or folding: Settings > General Settings > Printer Settings > Optimize Finishing > Align when Fold and Saddle Stitch > On
Printer driver (Windows)
Select Maintenance tab >Extended Settings >Optimize Finishing >On
Printer driver (Mac OS)
1. Select System Preferences (or System Settings) from the Apple menu > Printers & Scanners (or Print & Scan, Print & Fax), and then select the printer.
2. Select Options & Supplies > Options > -Optimize Finishing > On, and then click OK.
Lower the print density.
Change the paper type.
Change the orientation of the paper (portrait/landscape). Note that the printing time may change.
Change the front and back of the paper.