On Windows you can use copy/b command to send data to printer.

c:\> copy /b C80D.txt +mrvcode39_4pitch.sfp +c5F.txt LPT1:

If your operating system is DOS which only supports 8.3 file format, you need to shorten the file name before running the command.

If the destination printer is on the network, use the printer's network name in the place of LPT1. For example, the following command sends the font to a network printer which is shared as HPLaserJon computer Chicago:

c:\> copy/b C80D.txt +mrvcode39_4pitch.sfp +c5F.txt  \\Chicago\HPLaserJ