Can't help you with your question, as 'm new here, but I would ask you if you have found the wiring diagram of those motors, as I've found a couple too in an old IBM printer, and I would like to start playing a bit with CNC.
Unfortunally I've not been able to find any specs for those motors.
Wish you can elp. and sorry for my bad english ( I'm from Italy btw )
Cheers
Pigi