Easily print on a variety of paper sizes up to 29.7 x 42 cm (A3). Produce professional-quality colour for up to 50% less cost per-page than lasers on a printer that's ready for business.[ ¹] Dynamic security enabled printer Certain HP printers are intended to work only with cartridges that have a new or reused HP chip or electronic circuitry. These printers use dynamic security measures to block cartridges using a non-HP chip or electronic circuitry. Periodic firmware updates will maintain the effectiveness of these measures and block cartridges that previously worked. Reused HP chips and electronic circuitry enable the use of reused, remanufactured, and refilled cartridges.