When a message is displayed prompting you to replace the ink supply units, tap Proceed.
A message is displayed telling you that you can temporarily print with black ink.
Check the message, and then tap Proceed.
If you want to print in monochrome, select No, remind me later.
The ongoing job is canceled.
Now you can copy originals or print received faxes on plain paper in monochrome. Select the feature you want to use on the home screen.