A printer/scanner unit includes a scanner for optically reading a document model and a printer to print a recording medium. The document model is transported along a transport path from a feed device to an output device of a transport device. After the scanning step, the document model is displayed on a screen and can be completed there with supplementary data, supplied, for example, by means of a data input device, such as a keyboard or a data memory. A document model which has been scanned ask...