Typesetting on business cards refers to the information that will change for each individual persons card such as Email, Cell Phone, Name, Title and such.
During the letterpress era, movable type was composed by hand for each page. Cast metal sorts were composited into words and lines of text and tightly bound together to make up a page image called a forme, with all letter faces exactly the same height to form an even surface of type. The forme was mounted in a press, inked, and an impression made on paper.