| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent generation of density irregularities and the like in a printed image because of the generation of high-temperature parts at both ends of a thermal head even when high-speed printing is carried out. <P>SOLUTION: On the basis of pixel data of both ends of or near each line of image data to be printed, thermal storage data of the thermal head 108 of each line is calculated on the basis of thermal storage data of the preceding line. The thermal storage data of each line is compared with predetermined value data. When any of the thermal storage data is larger than the predetermined value data, an energy of a heating element 113 is lowered. The image data is printed to a printing medium 104 in a state with the energy of the heating element 113 lowered. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
