Patent ID: 7328980

Claim:
A computer-implemented method for identifying an estimate {circumflex over (ƒ)}(·) of a function T h =ƒ(R h ) relating resistance R h of a thermal print head element in a thermal print head of a thermal printer to temperature T h of the thermal print head element, the method comprising: (A) selecting a plurality N of initial temperatures T si ; (B) heating an insulated chamber containing the thermal print head to the plurality of initial temperatures T si ; (C) providing the thermal print head element with a plurality N of input powers P i ; (D) measuring a plurality N of resistances R hi resulting from application of the plurality of input powers P i ; and (E) identifying the estimate {circumflex over (ƒ)}(·) based on the plurality of initial temperatures T si , the plurality of resistances R hi , and the plurality of input powers P i .