Please check the following points:
- Is the paper damp? Check the paper and replace it if necessary.
- Are you using warped paper? Replace the paper.
- Confirm that your printer driver settings are correct.
- Is the paper tray properly inserted into the printer? Push the paper tray completely back into the printer.
- Is there paper or a foreign object jammed in the printer? Turn the power off and remove the jammed paper or foreign object.
- Is the transfer roll cartridge properly installed in the printer? Make sure that the transfer roll cartridge is properly installed.