What Printers can I use for this process?


All Canon Black-Only (monochrome) Laser Printers work for this process!
Most HP Black-Only Laser Printers work for this process EXCEPT:

Attention: If you are in the market for a new printer be aware that as of 2019, HP has changed the ingredients in some of their black-only laser machines. All Black-Only HP laser machines made before 2019 still work and all Canon Black-Only Laser machines work well. The cartridges that work for this process will say they have either Iron Oxide or Ferrite in them.
as of Dec 2020 here are the HP model numbers to avoid:
HP LaserJet 103, 107, 108, 408
HP LaserJet MFP 131, 133, 135, 136, 137, 138
HP LaserJet MFP M440, MFP432, M437 M438, M439 M442, M443
HP LaserJet MFP M42523, MFP M42525, M42623
Avoid All HP machines that say they are “NEVER STOP” Technology , “Managed” or “LaserJet Flow
If in doubt check the HP MSDS for your model number click here for HP’s MSDS sheets