| 摘要 |
<p>A circuit for controlling the energizing of heating elements (13), including transistors (12) for controlling the energizing of the respective heating elements, energizing start time counter circuits (22) for determining a delay time until the energizing of the respective transistors (12) is started, and energizing time counter circuits (23) for determining energizing time. Data are written to the respective counter circuits from the outside via a group of multi-bit, multi-stage latch circuits and a counter clock signal (8). The energizing start time counter circuits (22) are collectively and simultaneously caused to perform a count (subtraction) operation. Then, the energizing time counter circuit (23) is made to start a count operation at a point in time when each of the energizing start time counter circuits (22) holds a value of 0, and the transistors (12) start to energize each heating element (13). According to this arrangement, dots are formed at equal horizontal intervals, irrespective of the dot size. <IMAGE></p> |
