The Epson SureColor T3170 is a 24-inch wireless desktop large-format printer for architects, engineers, and GIS people who'd rather print A1/D-size sheets at their desk than walk to a plotter room. PrecisionCore TFP head and 4-color UltraChrome XD2 pigment ink put out an A1 sheet in about 34 seconds, and the 4.3-inch color touchscreen plus Wi-Fi Direct mean you can print straight from a phone or laptop without joining the office network. The thing buyers regret is treating this like a multi-user plotter — it's a personal/small-team device. No multifunction (see the T3170M), modest paper capacity, no high-volume ink packs. If you're one architect or a 2-3 person studio printing a few D-size sheets a day, this is exactly right. If five people need to share it, look at a SureColor T-series with a real stand and roll handling. Pigment ink means the prints don't smear on jobsite humidity or under highlighter, which matters more than people realize once they take a printed drawing into the field.