If you can limit yourself to vector graphics, there are inexpensive open-source pen-plotters which use the same Arduino-based grbl program that is used by CNC d

If you can limit yourself to vector graphics, there are inexpensive open-source pen-plotters which use the same Arduino-based grbl program that is used by CNC drilling machines. I don't know how reliable they are, and I don't know of one with an automatic paper-feed, and they probably take long to draw, particularly if there are a lot of solid color areas. Looking on amazon I see a cheap A4-sized self-assemble pen-plotter for $130.