Laser technology Laser HP LaserJet Color 5550dtn Printer, Laser, Colour, 600 x 600 DPI, A3, 27 ppm, Duplex printing HP LaserJet Color 5550dtn Printer. Print technology: Laser, Colour. Number of print cartridges: 4. Maximum resolution: 600 x 600 DPI. Maximum ISO A-series paper size: A3. Print speed (black, normal quality, A4/US Letter): 27 ppm, Duplex printing. Network ready Prints graphics quickly, and provides great image quality across the board, but it will cost you a chunk of change. https://www.pcmag.com/archive/hp-color-laserjet-5550dtn-139858 The HP Color LaserJet 5550dtn is a capable color laser with good performance, particularly for photos, and good to excellent Specs: Type: 1-pass color, Technology: Laser, Rated Speed (Color): 27 ppm, Rated Speed (Mono): 27 ppm https://www.pcmag.com/archive/hp-color-laserjet-5500dn-37894 The HP Color LaserJet 5500dn is big, though not as big as some other color laser printers. It's fast, rated at 21 pages per minute, but others are faster. And at $3,799 direct, it's less expensive than other color units. While it has a few weak points, th...