On operation of a printer for a digital tachograph in a motor vehicle, the input of the specification for the desired print is regularly time-consuming and error-prone due to the deep menu structure of the user guide. A solution is provided whereby the print medium (3), in addition to the size format, comprises an additional layout (21) and the print unit (12) of the printer (2) outputs a particular content of the impression on the print medium (3) depending on the embodiment thereof. The user can thus specify the desired content of the impression with selection of a print medium (3) for an advantageous sectional introduction.