DRIVING CIRCUIT FOR INKJETPRINT HEAD

The present invention relates to a drive circuit for a piezo-actuator of an inkjet printer which drives a piezo-actuator installed on a recording head of an inkjet printer to spray ink in a nozzle. According to the present invention, the drive circuit for a piezo-actuator of an inkjet printer compri...

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Bibliographic Details
Main Authors JO, HYE LIM, YEON, YEONG MO, CHOI, SUNG ILL
Format Patent
LanguageEnglish
Korean
Published 24.06.2016
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Summary:The present invention relates to a drive circuit for a piezo-actuator of an inkjet printer which drives a piezo-actuator installed on a recording head of an inkjet printer to spray ink in a nozzle. According to the present invention, the drive circuit for a piezo-actuator of an inkjet printer comprises: a first amplifying unit to receive an input signal for driving the piezo-actuator to remove noise and generate an output signal of a single polarity; a second amplifying unit to receive an output of the first amplifying unit to generate an output signal of both polarities where positive and negative polarities alternate; and a main amplifying unit to receive the output signal of the second amplifying unit to generate an output signal amplified by a drive voltage of 100-150 V to drive the piezo-actuator. 본 발명은 잉크젯 프린터의 기록헤드에 설치되어 노즐 내의 잉크를 분사시키는 피에조 엑츄에이터를 구동시키는 잉크젯 프린터의 피에조 엑츄에이터의 구동회로에 관한 것이다. 본 발명의 특징적인 구성은 상기 피에조 엑츄에이터를 구동시키는 입력신호를 입력받아 노이즈를 제거하며 단극성의 출력신호를 발생시키는 1차 증폭부; 상기 1차 증폭부의 출력을 입력받아 양(Positive)과 음(Negative)이 교번적으로 이루어지는 양극성의 출력신호를 발생시키는 2차 증폭부; 상기 2차 증폭부로부터의 출력신호를 입력받아 100볼트 내지 150볼트의 구동전압에 의하여 증폭된 출력신호를 발생시켜 상기 피에조 엑츄에이터를 구동시키는 메인 증폭부를 포함하는 것이다.
Bibliography:Application Number: KR20150059658