| 摘要 |
<p>A plurality of shift register groups (13a-13d), each composed of a plurality of registers, which respectively store next printing information, current printing information, history information on a predetermined number of preceding dots printed, and information on a predetermined number of adjacent dots energized. A plurality of pattern discriminating circuits (14a-14d) which successively discriminate the historical pattern of each energized dot so that the printing energy to the relevant energized dots when the next printing information stored in the register groups (13a-13d) is 'O' can become smaller than the printing energy to the relevant energized dots when the next printing information is '1' are provided.</p> |
