4. An area exposure apparatus according to claim 2 wherein a text decoder (34) is provided, for feeding text data, including end-of-line commands and width values of characters of text, and for, when decoding text exceeding a given length to width ratio and falling short of the typesetting width of the carrier, activating said converter (35) for rotating the text.
6. An area exposure apparatus according to claim 4 further comprising additional logic (43a) in said text decoder (34), for recognizing additional informations fed into said text decoder for excluding text rotation and for suppressing an output signal activating said converter.