Pitney Bowes DM50 Series Operator's Manual page 27

IMPORTANT: Always ensure that your prints are clear
and complete. Poor prints may be rejected by your Postal
Authority. If you notice missing lines in the print as shown
in the illustration, clean the printer nozzles as described
on page 7-4 of this guide.
The indicia above is a black and white representation of the approved
indicia.
For customers who use the standard Royal Mail product suite, only
Red non-fluorescent approved ink should be used in the machine.
Customers in the Republic of Ireland should only use Red non-
fluorescent ink approved by An Post in the machine.
SDC667C
3 • Running Mail
3-9