SUPPRESSION OF HEAT ACCUMULATED TEMPERATURE IN THERMAL HEAD

摘要

PURPOSE:To prevent the deterioration in image quality, by stopping the supply of a current to plural drive IC except when recording operation is carried out to suppress the rising in the heat accumulated temp. of a thermal head to a min. degree. CONSTITUTION:Voltage Vcc for a logic circuit to be applied to drive IC21-252 is supplied from a logic power source terminal 19 through a resistor 362 and a transistor 35. At this time, the transistor 35 is operated in a recording operation mode when the signal from a page signal input terminal 18 is an ''L'' level.