Thermal printer and paper recognition method

摘要

A thermal printer (10) has a first thermal head (2), a second thermal head (4), and a feeding mechanism (22). The feeding mechanism (22) feeds one of thermal papers which include a double-sided thermal paper having thermosensitive layers formed on both sides thereof and a single-sided thermal paper having a thermosensitive layer formed on one side thereof. The first thermal head (2) is so provided as to be brought into contact with a first side of the thermal paper fed by the feeding mechanism (22). The second thermal head (4) is so provided as to be brought into contact with a second side of the thermal paper fed by the feeding mechanism (22). The thermal printer (10) determines whether a mark (71A, 71B) has been printed at least one of the first and second sides of the thermal paper and controls print operation based on a determination result.