Offset/Commercial Printing
A printing technique whereby ink is spread on a metal plate with etched images, then transferred to an intermediary surface such as a rubber blanket, and finally applied to paper by pressing the paper against the intermediary surface. Most print shops use offset printing to produce large volumes of high-quality documents.

Digital Printing
The process of transferring a document on a personal computer or other digital storage device to a printing substrate by means of a device that accepts text and graphic output. As with other digital processes, information is reduced to binary code, or "digitized," to facilitate its storage and reproduction. Digital printing has steadily replaced lithography in many markets, especially at the consumer and business level, as a result of its substantially lower production costs.