Line thermal printer and energization controlling method

A line thermal printer in which a plurality of heating elements are disposed at a line thermal head, with the plurality of heating elements being subjected to a divided energization process in order to energize every several number of heating elements by dividing an energization process into a plurality of portions, the line thermal printer comprising:

• controlling means, including a correction factor table which stores correction factors that have been previously computed using a previously provided exponential functional formula, for performing a controlling operation so that the energization of the heating elements is carried out in accordance with an energization time that has been obtained by a correction factor corresponding to a measured temperature of each of the heating elements, obtained from the correction factor table.

A method of controlling an energization process of a line printer in which a controlling operation is carried out so that a plurality of heating elements of a line thermal head are subjected to a divided energization process in order to energize every several number of heating elements by dividing the energization process into a plurality of portions, wherein:

• a temperature of each of the heating elements is measured, a correction factor is computed using an exponential functional formula that has been previously provided based on the measured temperature of each of the heating elements, and an energization time is determined based on the computed correction factor in order to subject the heating elements to the divided energization process in accordance with the determined energization time.

A method of controlling an energization process of a line thermal printer in which a controlling operation is carried out so that a plurality of heating elements of a line thermal head are subjected to a divided energization process in order to energize every several number of heating elements by dividing the energization process into a plurality of portions, wherein:

• a temperature of each of the heating elements is measured, the measured temperature of each of the heating elements and a correction factor that corresponds to the measured temperature of each of the heating elements are obtained from a correction factor table which stores the correction factors that have been previously computed by a previously provided exponential functional formula, and an energization time that corresponds to the obtained correction factor is determined in order to subject the heating elements to the divided energization process for a length of time equal to the determined energization time.