Do you often scan and copy texts in addition to printing? Choose an all-in-one printer. An all-in-one printer is a useful 3-in-1 solution that saves you time, money, and especially space. You don't need a separate printer, scanner, and copier. If you fax a lot, you can buy a 4-in-1 solution. Quickly want to copy a large stack of papers? Choose an all-in-one printer with an automatic document feeder. With a duplex document feeder, you can also scan or copy duplex documents automatically.