HP makes A3 printers in various shapes and sizes. With the HP A3 printers, you can print and even scan or copy. You can use an A3 printer to print spreadsheets, enlarged photos, small posters, charts, and more. They're all-in-one printers. With these printers, you can automatically print in duplex and you have automatic document feeder (ADF). You can scan or copy multiple sheets automatically. You can also print wirelessly thanks to the built-in WiFi of HP A3 printers.