For completeness, here's some info on arc fault breakers - https://en.wikipedia.org/wiki/Arc-fa...it_interrupter

That article does state that the US National Electric Code (NEC) has required AFCI on mostly everything since 2014. So, depending on what code has been applied in usarmyaircav's jurisdiction, finding an AFCI breaker on the dining room is reasonable. The article also talks about the tendencies for the AFCI breakers to falsely trip. Perhaps there's an input surge current that the breaker is interpreting as an arc condition, causing it to trip. One thought would be to run the printer off a hefty UPS of some sort - one that can handle 500W or so. That might provide enough isolation/filtering to keep an AFCI breaker from tripping on short duration spikes.