Patent ID: 6709091
Filing Date: 2004-03-23
Classification: B41J

Abstract:
An ink ejection device, comprising:a nozzle plate formed with nozzles from which ink is ejected; walls including side walls, a ceiling wall and a bottom wall, said walls defining an ink channel having a volume filled with ink and having a length defined by two ends, said nozzle plate being attached to one of the two ends of the ink channel; an actuator that applies pressure wave vibrations to the ink in the ink channel; a temperature sensor that senses a temperature indicative of a temperature of the ink in the ink channel; a control unit that executes an ejection operation by applying an ejection pulse to said actuator to apply pressure wave vibrations to the ink in the ink channel and cause ink to eject from the nozzle, and that executes an auxiliary operation by applying a non-ejection pulse to said actuator, ink being not ejected attendant to the auxiliary operation, intervals between the ejection pulse and the non-ejection pulse being stored and becoming selected as a function of a plurality of temperatures sensed by said temperature sensor.