Not sure how this is hooked up, but there can be quite a bit of heat generated if it's possible for people to print (lots of) fully black pages, like wasting someone's fax toner/ink but with a risk of fire.
https://en.wikipedia.org/wiki/Lp0_on_fire
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux...
Thermal printers use a thin wire that heats up in certain sections. The paper is heat sensitive. Funny though I discovered you can erase a thermal image using a highlighter pen (at old job where clerks had to highlight a section. Ooops!)
The paper is probably more of a danger since thermal paper supposedly is loaded with BPA.
Apparently not the case any more.
The common white/greyish ones might still be a health risk.
Supposedly these blue ones that some shops have adapted is a lot better (and even recyclable?).
https://www.koehlerpaper.com/en/products/Thermal-paper/TH_Bl...
> Receipt printers are thermal and they print all day long.
Not continuously, and not fully black pages.
That's been banned in the EU since 2020, the question is if its replacement BPS isn't just as bad... [1]
[1] https://echa.europa.eu/de/-/bisphenol-s-has-replaced-bisphen...
Source: I'm doing something similar with a Cat Printer: https://untested.sonnet.io/TIL/weekly/40#Cat+printers
Easier to set up if you're using a PC/Linux/Intel Mac as there are some issues with ARM/Apple SoC. Start with the repo in bold.
Keep up the good work :)