In Latin script typography, roman is one of the three main kinds of historical type, alongside blackletter and italic. Sometimes called normal, it is distinct from these two for its upright style (relative to the calligraphy-inspired italic) and its simplicity (relative to blackletter).
During the early Renaissance, roman (in the form of Antiqua) and italic type were used separately. Today, roman and italic type are mixed, and most typefaces are composed of both an upright roman style and an associated italic or oblique style.
[On Robert Estienne's typefaces of the 1530s]: Its outstanding design became standard for Roman type in the two centuries to follow...From the 1540s onwards French Romans and Italics had begun to infiltrate, probably by way of Lyons, the typography of the neighbouring countries. In Italy, major printers replaced the older, noble but worn Italian characters and their imitations from Basle.