| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a print controller ensuring high accuracy stabilized print control. SOLUTION: The print controller comprises an aggregate of micro heaters each serving as a heater and a temperature detector, a thermal head comprising a circuit for current driving the heaters, a control circuit for switching the current circuit of each heater between thermal driving and temperature detection, a circuit for detecting the temperature of each heater by converting a current flowing at the time of temperature detection into a voltage level, an A/D conversion circuit for converting the voltage digitally, an integrator for integrating the digital value from the start of heating, a comparator for comparing an integrated value of the integrator with a preset print density at a relevant part delivered from a host unit, and a circuit for interrupting thermal driving of the relevant heater when a decision is made that a target print density is reached based on the comparison results.</p> |
