Profile: Printheads & Paper International Limited specializes in offering printer services. We provide printheads, film sleeves, thermal printheads, fuser units and consumables. A thermal printhead is simply the linear array of resistor elements that produce dots of heat in a thermal printer. It is an electronic device containing driver ICs in a shift register architecture, which permits serial loading of data that determines which heaters will be energized and then energizes the selected heaters in response to other control signals.