| 摘要 |
<p>PURPOSE:To enhance recording speed, by providing M arrays of heat generating elements at a predetermined pitch, and allocating M energization timings (M energizations constitute one period) to different heat generating element arrays so that when the one of the arrays is energized to generate heat, the other arrays are in rest and cooled. CONSTITUTION:Heat generating element arrays 19, 20 are arranged in a rectilinear form and in parallel to each other at a pitch of N.M times the pitch P of record dots recorded by heat generating elements 19a, 20a. In one example, M=2, N=2, and the pitch of the arrays is 4P. The heat generating elements 19a, 20a on a thermal recording head 1 are connected in common to a recording power supply terminal 20 on one side thereof, and are independently connected to NAND drivers 23a, 24a on the other side. Dot data signals from a dot data signal terminal 30 are stored into a shift register 25 or 26 by a clock signal given alternately to clock signal terminals 31, 32, and are outputted in parallel on an array basis by a strobe signal, whereby the heat generating elements 19a, 20a in the respective arrays are energized to generate heat under control. By this, the heat generating elements 19a, 20a in the respective arrays are alternately caused to generate heat, so that a cooling period for each of the heat generating elements is prolonged.</p> |
