Epson EPL-N2550 Series User Manual page 292

3. Select the EPSON BarCode Font you want to use, set the font
size, then click OK.
Note:
In Windows XP, 2000, or Server 2003, you cannot use font sizes
larger than 96 points when printing bar codes.
4. The characters you selected appear as bar code characters
similar to those shown below.
292
Information about Fonts