| 摘要 |
PURPOSE:To improve a visible blackening degree, by arranging plural heat generating resistor elements in such a configuration that recording due to element adjacent to each other are overlapped to eliminate the irregularity in density without raising printing voltage. CONSTITUTION:Heat generating resistor elements are formed on a high resistance base board 1 is such an array that the segment connecting one electrode 12 provided to each heat generating resistor element, each heat generating element 13 and the other electrode 12 provided thereto forms an angle of 30 deg. with respect to the sending direction of sensitive paper shown by an arrow A. When the heat resistor element 13 is heated, a diamond shaped part 15 is subjected to color development. Because each resistor element 13 is inclined with respect to the sending direction A of the sensitive paper, the area of a non-color forming part 16 corresponding to the gap part 14 between the resistor elements 13 becomes smaller as compared to a conventional example and, moreover, the non- color forming part 16 is independently separated. Because the non-color forming part 16 is independently separated, there exists an effect making the non-color forming part inconspicuous in the view especially when a blackening degree is low. |
