This is a 1993 HP Laser Printer Model C2001A, Made In Japan ( still the hall marked of qualty ). Street name is HP Laser Printer 4. Support up to A4 size paper, with external font cartridges optional. Printing speed is about 10PPM. As the printer is aging and the correct type of toner cartridges is hard to come buy, I decide to reverse engineer the printer to learn more about the manufacturing and electronics state of the art back in the early 1990s.
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