Patent ID: 7986333

Claim:
A recording device that presses a thermal head, comprising a printing portion and a printer controlling section, where heating elements are arranged in a direction orthogonal to a transport direction of a print medium, against a printing surface of the print medium at the printing portion on a transport path of a print medium transported by a transport means, controls the flow of current selectively applied to the heating elements, and performs desired printing at a printing area on the printing surface, wherein the print medium has a shape having portions where contact lengths of the printing surface coming in contact with the heating elements in a width direction orthogonal to a transport direction of the print medium are different in the transport direction, and the printer controlling section frequently adjusts a pressing load of the thermal head according to the contact length of the printing surface of the print medium and controls rotation of cam gears that make pressing/separation operation of the thermal head be linked as well as detection of a size of the print medium.