| 摘要 |
<p>PURPOSE:To print by positioning the center of dot on the same horizon regardless of a size of dot to be printed. CONSTITUTION:Each of a plurality of heating elements 13 is provided with a transistor 12 for controlling energization, an energization start time counter circuit 22 for deciding a delay time until energization of each transistor 12 is started, and an energizing time counter circuit 23 for deciding an energizing time. In each counter circuit, data is written from the outside through groups of multi-step latch circuit consisting of a plurality of bits and each energization start time counter circuit 22 is operated to count (subtraction) at a time based on a counter clock signal 8. Thereafter, from a time that each energization start time counter circuit 22 becomes 0, the counting operation of the energizing time counter circuit 23 is started and the operation of the transistor 12 is started. until a count value becomes 0, the transistor 12 is operated and the heating element 13 is energized. Thus, regardless of size of dot, the dot can be formed on the same horizon.</p> |
