The corona wires are used to deposit charge on the selenium drum so that it can pick up toner as part of the printing process. Focused light knocks the charge off the drum where it hits so only the dark parts of the image pick up toner and press it on the paper. It then passes through a fuser which melts the toner to the paper.

Look up CORONA wire....also a printer part.

Interesting…. Q posts 713, 2013, 2014, 2015, 2016, all reference corona # offline.

I do believe the corona offlines were a reference to the deepstate CIA satellite network they used to communicate with each other… However interesting parallel none the less. Good catch fren

https://www.smithcorona.com/shop-by-printer.html they are indeed great printers, and would certainly be vulnerable. likely not developed as secure devices like some military printers.