- Wikipedia: LASER printing
- Google: LASER printer hexagonal mirror
- YouTube: How To Run an HP LaserJet 4P Polygon Mirror Motor – Technical details
- YouTube: Direct LASER printing
- YouTube: Home Made LASER exposer
There are many applications for LASER printer parts detailed on YouTube and elsewhere.
A video of the hexagonal mirror in operation. It spins very rapidly and must have an indexer to allow position and speed control.