Abstract: A label printer, or a printer in general, can have a processor which can be connected to a data storage medium as well as to data input and data output connections for external devices. Such a printer could include a thermal printer for printing labels on self-adhesive materials. To expand the usability of such a printer, and to increase the printing speed, a common interface can be provided, which interface can be activated by the processor and can be configured in a manner such that both the storage medium and the data input and data output connections for external devices can be connected thereto.

Abstract: The invention is directed to a thermal printer, with a thermal print head having a series of electrically drivable heating elements, with a microprocessor transferring data to be printed into a register associated with the thermal print head. In order to increase the printing speed, a buffer storage connected to the microprocessor via a parallel data line as well as a separate load state monitoring circuit are proposed, the monitoring circuit being connected to the buffer storage and causing data to be transferred from the buffer storage into the register when the data written into the buffer storage from the microprocessor has reached a defined quantity. As an alternative or addition, it is recommended to insert a pulse generator and a stepping motor driver between the output of the microprocessor and the stepping motor for driving the platen roll.