Yeah, a dye sub printer might do you as it''s an entirely different tech from lasers with toner, etc. Ink is solid when cool. But I've not seen a reasonably small one since they stopped selling the Alps. Citizen used to sell a wax transfer printer that is similar to dye sub that was about the size of a box of Saran Wrap. Pretty slow and very expensive per output page, but if selling insurance, that's probably not an issue... The lightest one Xerox sells weighs 60 pounds! IDK if anyone else makes them.
.bh.