DX-Coded Labels

Hello all,


I am interested in loading my own film cartridges.  I have run into one
question I have not yet been able to find an answer for: how do you print a
DX-Code barcode for your film (in my case NPS mainly)?  I prefer my film to
be preset to whatever it is, and not need to alter the rules of my cameras
(as I will normally have a different speed in each).

Could someone please point me in the direction?

Thanks all!

Robert Meyers