A digital copier can be described as a scanner and printer contained in the same device. An original document is placed on the scanning bed and is recorded as digital information. With the use of electrophotography, the digital information is used to produce copies of the original. The content of the print output cannot change until the digital file is edited or a different item is placed in the scanning portion of the device. Most digital copiers are known as multifunctional units because they are scanners, copiers, and printers rolled into one and some models even include fax capabilities.

Copying is one of the best methods for outputting the smallest quantities (500 or less). If, for example, an application requiring a quantity of one hundred must be produced immediately, the only step necessary would be to place the original document in the scanning portion of the copier and push the start button. The cost per copy is the same regardless of the quantity because there is usually no preparation involved before the copies can be produced.

Although digital copiers have improved significantly, there is still a difference in the quality that they can achieve compared with traditional or digital presses. The toner used with most copiers is not as durable as inks used with traditional printing methods. A conventional copier can produce good copies of simple applications with text and line art. Digital copiers are much better at producing accurate copies of more complicated documents, such as those containing continuous tone images (photographs).

A digital copier is more limited than traditional or digital presses with the types of substrates that can be used to produce documents. Copiers are restricted to paper stocks which have a smooth finish. Textured papers provide poor results and substrates other than paper do not work well or cannot be used at all.

The copying rates of various copiers usually depends upon the cost of the device. The more expensive high-end digital copiers are able to produce 50 or more pages per minute, while the lower priced models may produce fewer than 10. Your organization may require a large monthly volume (over 100,000) in which case the expense of a higher end digital copier is justified, but it would not make sense if your monthly volume is low (1,000 or less).

Copying can be an effective output method for a few hundred documents at a time, but is not a good choice for larger quantities because the process becomes less cost effective. Organizations offering quick print capabilities can be a good source for obtaining copies because of the speed and convenience.