I sent an email and whatsapp message ... I would like to assist your team with determining if other systems can be reconfigured.
Let me know if I can assist. I have multiple brands of printers that are available for your experimentation canon mx922, HP6500A and HP8600.
Hope I can assist. I can follow directions and I can use oscilloscopes.. I understand FPGAs I have many multimeters .. there is no issue if the printers I have become bricked.
Have a great day!