Patent ID: 7029087
Filing Date: 2006-04-18
Classification: B41J

Abstract:
1. A head driving device of a liquid ejecting apparatus, comprising: a plurality of nozzles; a head driving circuit, generating driving signals; a plurality of pressure generating elements, correspondingly provided for each of the nozzles, and applying pressure to liquid based on the driving signals so that liquid droplets are ejected from the nozzles; an integrated switching circuit, selecting the driving signals for applying to the pressure generating elements at predetermined ejecting timing; a controller, controlling a liquid ejecting operation; and a thermal detector, provided in the integrated switching circuit, and detecting a temperature of the integrated switching circuit, wherein the thermal detector outputs a digital signal to the controller when the temperature of the integrated switching circuit is increased to greater than a predetermined temperature; and wherein the controller halts the liquid ejecting operation when the controller receives the digital signal.