Hi

I have moved this post to the correct forum.

I don't think you will be able to get much help on your problem and I doubt you'll find anyone here who can help you.. sorry.

If you have the printers PCB you can try tracing the motor connections back to find out what driver chip is used and this may give a clue. Try Googling the laser printer model and the words 'CNC' or 'stepper', you may get lucky and find someone has tried the same thing.

Good luck!