The memory is a bit hazy - going back over a decade! but, IIRC the print functionality of any single IER 512 is configured by an EPROM.
So, if in it's previous life it was a baggage tag printer, in all probability you will need to change the EPROM to print flight strips. Also I don't think all variants had cutters fitted. You may need to ask more questions!
Spares shouldn't be a problem if you have facilities to repair electronic/mechanical devices - getting a particular flight strip EPROM may be!
