The number of cards you intend to print – and how quickly those cards need to be printed – will help determine the type of printer specified. An organization printing only 20 or so cards per week on site and on demand can easily get by with a single-sided printer, even if printing on both sides of the card. Putting the cards through for a second printing pass isn’t really a big deal when there only is a small number of cards to print.
However, for a large organization with a need to print more than a few dozen cards a week, a dual-sided printer with an integrated flip-over mechanism becomes essential for creating cards in a timely manner.