how, select proper driver for "noname" used stepper motor

how, select proper driver for "noname" used stepper motor

it is ordinary to retrieve (especially big and high-power) stepper
motors form large pen-ploters or copy-machine.
How can chose proper driver for that `noname' stepper motor

--We know what type of motors (bipolar or uni) is that by quantity
of cables.
6- bipolar
4-unipolar

--we can measure resistance of each wires

--we can measure inductance for wire

but what next? How calculate that in order to get know about max
voltage and nominal current?

Best regards J