JP2008188985A5 - - Google Patents

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Publication number
JP2008188985A5
JP2008188985A5 JP2007318586A JP2007318586A JP2008188985A5 JP 2008188985 A5 JP2008188985 A5 JP 2008188985A5 JP 2007318586 A JP2007318586 A JP 2007318586A JP 2007318586 A JP2007318586 A JP 2007318586A JP 2008188985 A5 JP2008188985 A5 JP 2008188985A5
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JP
Japan
Prior art keywords
signal
drive
capacitive load
potential
potential adjustment
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Withdrawn
Application number
JP2007318586A
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Japanese (ja)
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JP2008188985A (en
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Publication date
Application filed filed Critical
Priority to JP2007318586A priority Critical patent/JP2008188985A/en
Priority claimed from JP2007318586A external-priority patent/JP2008188985A/en
Priority to US11/972,542 priority patent/US7731317B2/en
Publication of JP2008188985A publication Critical patent/JP2008188985A/en
Priority to US12/624,206 priority patent/US8336979B2/en
Publication of JP2008188985A5 publication Critical patent/JP2008188985A5/ja
Withdrawn legal-status Critical Current

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Claims (6)

容量性負荷に駆動信号を印加する容量性負荷駆動回路において、In a capacitive load drive circuit that applies a drive signal to a capacitive load,
前記駆動信号の基準となる駆動波形信号を生成する駆動波形信号発生手段と、Drive waveform signal generating means for generating a drive waveform signal serving as a reference for the drive signal;
前記容量性負荷の充電に用いる充電トランジスタ及び放電に用いる放電トランジスタがプッシュプル接続され、前記駆動波形信号を増幅して駆動信号を出力する駆動信号発生手段と、Drive signal generating means for amplifying the drive waveform signal and outputting a drive signal, wherein a charge transistor used for charging the capacitive load and a discharge transistor used for discharging are push-pull connected;
前記駆動信号発生手段の充電トランジスタのコレクタ端子の電位を調整する電位調整手段と、を備え、A potential adjusting means for adjusting the potential of the collector terminal of the charging transistor of the drive signal generating means,
前記電位調整手段は、The potential adjusting means includes
前記駆動波形信号に基づいて電位調整信号を出力する電位調整信号生成手段と、A potential adjustment signal generating means for outputting a potential adjustment signal based on the drive waveform signal;
前記電位調整信号をパルス変調して変調信号を出力する変調手段と、Modulation means for pulse-modulating the potential adjustment signal and outputting a modulation signal;
前記変調信号を電力増幅してデジタル電力増幅信号を出力するデジタル電力増幅器と、A digital power amplifier that amplifies the modulated signal to output a digital power amplified signal;
前記デジタル電力増幅信号を平滑化して前記駆動信号発生手段の充電トランジスタのコレクタ端子に出力する平滑フィルタと、A smoothing filter that smoothes the digital power amplification signal and outputs it to a collector terminal of a charging transistor of the drive signal generating means;
を有することを特徴とする容量性負荷駆動回路。A capacitive load driving circuit comprising: 前記電位調整信号生成手段は、前記駆動波形信号に所定の電位を加算して前記電位調整信号を出力することを特徴とする請求項１に記載の容量性負荷駆動回路。The capacitive load driving circuit according to claim 1, wherein the potential adjustment signal generation unit adds a predetermined potential to the drive waveform signal and outputs the potential adjustment signal. 前記電位調整信号生成手段は、少なくとも前記駆動信号の充電期間中に前記駆動波形信号に所定の電位を加算することを特徴とする請求項２に記載の容量性負荷駆動回路。The capacitive load driving circuit according to claim 2, wherein the potential adjustment signal generation unit adds a predetermined potential to the driving waveform signal at least during a charging period of the driving signal. 前記電位調整信号生成手段は、前記駆動波形信号の位相を進め前記電位調整信号を出力することを特徴とする請求項１乃至３のいずれか１項に記載の容量性負荷駆動回路。4. The capacitive load drive circuit according to claim 1, wherein the potential adjustment signal generation unit advances the phase of the drive waveform signal and outputs the potential adjustment signal. 5. 液体噴射ヘッドと、A liquid jet head;
液体噴射ヘッドに設けられた複数のノズルと、をさらに備え、A plurality of nozzles provided in the liquid jet head, and
前記容量性負荷はアクチュエータであって、前記ノズルに対応して設けられ、前記アクチュエータに駆動信号を印加する請求項１乃至４のいずれか１項に記載の容量性負荷駆動回路を備えた噴射装置。5. The injection device including the capacitive load driving circuit according to claim 1, wherein the capacitive load is an actuator, is provided corresponding to the nozzle, and applies a drive signal to the actuator. 6. . 請求項５の噴射装置を備えた印刷装置。A printing apparatus comprising the ejection device according to claim 5.
JP2007318586A 2007-01-12 2007-12-10 Liquid ejector Withdrawn JP2008188985A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2007318586A JP2008188985A (en) 2007-01-12 2007-12-10 Liquid ejector
US11/972,542 US7731317B2 (en) 2007-01-12 2008-01-10 Liquid jetting device
US12/624,206 US8336979B2 (en) 2007-01-12 2009-11-23 Liquid jetting device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007004092 2007-01-12
JP2007318586A JP2008188985A (en) 2007-01-12 2007-12-10 Liquid ejector

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP2010244444A Division JP2011031624A (en) 2007-01-12 2010-10-29 Capacitive load driving circuit, jetting device, and printing apparatus
JP2010244443A Division JP5170211B2 (en) 2007-01-12 2010-10-29 Capacitive load drive circuit, jetting apparatus and printing apparatus

Publications (2)

Publication Number Publication Date
JP2008188985A JP2008188985A (en) 2008-08-21
JP2008188985A5 true JP2008188985A5 (en) 2011-01-06

Family

ID=39749528

Family Applications (3)

Application Number Title Priority Date Filing Date
JP2007318586A Withdrawn JP2008188985A (en) 2007-01-12 2007-12-10 Liquid ejector
JP2010244443A Expired - Fee Related JP5170211B2 (en) 2007-01-12 2010-10-29 Capacitive load drive circuit, jetting apparatus and printing apparatus
JP2010244444A Withdrawn JP2011031624A (en) 2007-01-12 2010-10-29 Capacitive load driving circuit, jetting device, and printing apparatus

Family Applications After (2)

Application Number Title Priority Date Filing Date
JP2010244443A Expired - Fee Related JP5170211B2 (en) 2007-01-12 2010-10-29 Capacitive load drive circuit, jetting apparatus and printing apparatus
JP2010244444A Withdrawn JP2011031624A (en) 2007-01-12 2010-10-29 Capacitive load driving circuit, jetting device, and printing apparatus

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JP (3) JP2008188985A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5407518B2 (en) * 2009-04-23 2014-02-05 セイコーエプソン株式会社 Drive signal generation circuit and drive signal generation method
JP5638320B2 (en) * 2010-08-30 2014-12-10 富士フイルム株式会社 Liquid ejection head drive device, liquid ejection device, and ink jet recording apparatus
JP5728962B2 (en) 2011-01-18 2015-06-03 セイコーエプソン株式会社 Capacitive load drive circuit and fluid ejection device
JP5948846B2 (en) * 2011-12-15 2016-07-06 セイコーエプソン株式会社 Liquid ejecting apparatus and method for controlling liquid ejecting apparatus
JP6007512B2 (en) * 2012-02-29 2016-10-12 セイコーエプソン株式会社 Liquid discharge head drive circuit
JP6088150B2 (en) 2012-04-06 2017-03-01 エスアイアイ・プリンテック株式会社 Drive device, liquid jet head, liquid jet recording apparatus, and drive method
JP5783203B2 (en) * 2013-04-25 2015-09-24 セイコーエプソン株式会社 Liquid ejecting apparatus, printing apparatus, and driving method of liquid ejecting apparatus
JP6172246B2 (en) * 2015-11-30 2017-08-02 セイコーエプソン株式会社 Liquid ejecting apparatus and method for controlling liquid ejecting apparatus
JP7392465B2 (en) * 2019-12-26 2023-12-06 セイコーエプソン株式会社 Liquid ejection device, drive circuit, and integrated circuit
JP7392466B2 (en) * 2019-12-26 2023-12-06 セイコーエプソン株式会社 Liquid ejection device, drive circuit, and integrated circuit

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002059545A (en) * 2000-08-18 2002-02-26 Seiko Epson Corp Driving power control for printing device
JP4639922B2 (en) * 2004-04-20 2011-02-23 富士ゼロックス株式会社 Capacitive load drive circuit and method, droplet discharge apparatus, droplet discharge unit, and inkjet head drive circuit
JP3965700B2 (en) * 2004-08-27 2007-08-29 富士フイルム株式会社 Image forming apparatus and liquid discharge head drive control method
JP4572722B2 (en) * 2005-03-30 2010-11-04 セイコーエプソン株式会社 Liquid ejection apparatus and liquid ejection method

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