1. In an area exposure apparatus for exposing area of a text on a recoding carrier, an apparatus of the type comprising drive means for continuously moving said recording carrier in a forward move direction, a scanner for scanning said recording carrier at right angles relative to said forward move direction by means of a modulated scanner beam, the scanning movement of which is coupled to said drive means, and further comprising a receive module for receiving text data defining the identity, position, kind and size of the characters, said text data including end-of-line commands, an output data processing system connected to said receive module and an input device for receiving character-specific data defining the contour of the character, said output data processing system constructed for generating output data for controlling said scanner, and further comprising a converter connected to said output data processing system for converting said text data of text which is relatively narrow compared to a given typesetting width of said area exposure apparatus, the improvement wherein said output data processing system (4) comprises an X register (42) for storing X distance data of the postions of the characters in the X direction, and a Y register (40) for storing Y distance data of the positions of the scanning lines in the Y direction, for exposing the text in the normal position, a converter of the type for converting the X distance data of the characters of the text in rotation Y distance data as well as the Y distance data of the lines of text in rotation X distance data for rotating the text to be exposed onto said recording carrier about 90 degrees relative to a normal position of the text on said recording carrier, and at least one output (39 or 41) of said converter connected to said X register (42) and to said Y register (40).