JP2011101972A - 液体噴射装置及び液体噴射型印刷装置 - Google Patents
液体噴射装置及び液体噴射型印刷装置 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04541—Specific driving circuit
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3203—Fluid jet cutting instruments
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04548—Details of power line section of control circuit
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/0455—Details of switching sections of circuit, e.g. transistors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/0457—Power supply level being detected or varied
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04573—Timing; Delays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04581—Control methods or devices therefor, e.g. driver circuits, control circuits controlling heads based on piezoelectric elements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
- B41J2/045—Ink jet characterised by the jet generation process generating single droplets or particles on demand by pressure, e.g. electromechanical transducers
- B41J2/04501—Control methods or devices therefor, e.g. driver circuits, control circuits
- B41J2/04593—Dot-size modulation by changing the size of the drop
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
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Abstract
【解決手段】駆動波形信号発生回路25からの信号を変調回路26でパルス変調し、その変調信号PWMをデジタル電力増幅回路28で電力増幅し、その電力増幅変調信号APWMを平滑フィルタ29で平滑化して駆動信号COMとする場合、変調回路26、デジタル電力増幅回路28、平滑フィルタ29、駆動されるアクチュエータの静電容量、及び補償器32で構成される駆動信号フィードバック閉ループの周波数特性が所定の減衰開始周波数まで一定となるように、補償器32の伝達特性βを設定することにより、平滑フィルタ29にダンピング抵抗を用いないときの共振特性を補償することができるので、ダンピング抵抗が不要となり、電力損失を低減することが可能となる。
【選択図】図6
Description
本発明は、これらの諸問題に着目してなされたものであり、ダンピング抵抗による電力損失を低減することが可能な液体噴射装置及び液体噴射型印刷装置を提供することを目的とするものである。
この液体噴射装置によれば、例えば駆動されるアクチュエータの数に応じて変化する、変調回路、デジタル電力増幅回路、平滑フィルタ、アクチュエータの静電容量、及び補償器で構成される閉ループの周波数特性を、逆フィルタにより、所定の周波数領域で一定となるように補正することにより、駆動信号の精度を確保することができる。
また、本発明の液体噴射型印刷装置は、前記液体噴射装置を用いたことを特徴とするものである。
図1は、第1実施形態の液体噴射型印刷装置の概略構成図であり、図1において、印刷媒体1は、図の左から右に向けて矢印方向に搬送され、その搬送途中の印刷領域で印刷される、ラインヘッド型印刷装置である。
駆動波形信号WCOMをパルス変調する変調回路26には、図7に示すように、周知のパルス幅変調(PWM:Pulse Width Modulation)回路を用いた。パルス幅変調は、所定周波数の三角波信号を出力する三角波発振器34と、三角波信号と駆動波形信号WCOMを比較し、例えば駆動波形信号WCOMが三角波信号より大きいときにオンデューティとなるパルスデューティの変調信号PWMを出力する比較部35とを備えて構成される。
なお、前記駆動波形信号発生回路25も、減算器である加減算器31も、変調回路26も、プログラムによる演算処理によって構成することができる。また、変調回路26には、この他にパルス密度変調(PDM)回路などの周知のパルス変調回路を用いることができる。
補償器32は、図10に示すように、1つのコンデンサC1と1つの抵抗Rから構成され、駆動信号COMの位相を進めて負帰還信号CPSTを出力するハイパスフィルタで構成される。なお、この補償器32の抵抗Rを大きな抵抗値のものとすることで、抵抗Rに流れる電流値を小さくすることができ、電力損失を低減することができる。
第2実施形態におけるアクチュエータ駆動回路のうち、加減算器31、変調回路26、デジタル電力増幅回路28、平滑フィルタ29、アクチュエータ22の静電容量、及び補償器32による閉ループを図15に示す。逆フィルタ23の伝達特性をcとする。逆フィルタ23を含む系全体の伝達特性G0は、下記2式で表れる。
なお、前記実施形態では、本発明の液体噴射装置をラインヘッド型の液体噴射型印刷装置に用いた場合についてのみ詳述したが、本発明の液体噴射装置は、マルチパス型の液体噴射型印刷装置にも同様に適用可能である。
Claims (3)
- 駆動波形信号を発生する駆動波形信号発生回路と、
前記駆動波形信号発生回路からの信号をパルス変調して変調信号とする変調回路と、
前記変調信号を電力増幅して電力増幅変調信号とするデジタル電力増幅回路と、
前記電力増幅変調信号を平滑化してアクチュエータの駆動信号とする平滑フィルタと、
前記駆動信号の位相を進めて負帰還信号とする補償器と、
前記駆動波形信号と前記負帰還信号との差分信号を前記変調回路への入力信号とする減算器とを備えたことを特徴とする液体噴射装置。 - 前記駆動波形信号発生回路と前記減算器との間に設けられ且つ前記変調回路、前記デジタル電力増幅回路、前記平滑フィルタ、前記アクチュエータの静電容量、及び前記補償器で構成される閉ループの周波数特性が所定の周波数領域で一定となるように補正する逆フィルタを備えたことを特徴とする請求項1に記載の液体噴射装置。
- 請求項1又は2に記載の液体噴射装置を備えた液体噴射型印刷装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009257375A JP5471325B2 (ja) | 2009-11-10 | 2009-11-10 | 液体噴射装置及び印刷装置及び手術具 |
US12/914,377 US8256858B2 (en) | 2009-11-10 | 2010-10-28 | Liquid ejection device and liquid ejection printer |
US13/555,740 US8733873B2 (en) | 2009-11-10 | 2012-07-23 | Liquid ejection device and liquid ejection surgical instrument |
US14/254,726 US8939533B2 (en) | 2009-11-10 | 2014-04-16 | Liquid ejection device and liquid ejection surgical instrument |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009257375A JP5471325B2 (ja) | 2009-11-10 | 2009-11-10 | 液体噴射装置及び印刷装置及び手術具 |
Related Child Applications (2)
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JP2010209939A Division JP2011102031A (ja) | 2010-09-17 | 2010-09-17 | 液体噴射装置及び液体噴射型印刷装置 |
JP2014018270A Division JP5790801B2 (ja) | 2014-02-03 | 2014-02-03 | 手術具 |
Publications (2)
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JP2011101972A true JP2011101972A (ja) | 2011-05-26 |
JP5471325B2 JP5471325B2 (ja) | 2014-04-16 |
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JP2009257375A Expired - Fee Related JP5471325B2 (ja) | 2009-11-10 | 2009-11-10 | 液体噴射装置及び印刷装置及び手術具 |
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US (3) | US8256858B2 (ja) |
JP (1) | JP5471325B2 (ja) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013014084A (ja) * | 2011-07-05 | 2013-01-24 | Seiko Epson Corp | 圧電素子駆動回路、および流体噴射装置 |
US8690281B2 (en) | 2010-11-15 | 2014-04-08 | Seiko Epson Corporation | Capacitive load driving circuit, liquid ejecting apparatus, and medical apparatus |
US8692590B2 (en) | 2010-11-15 | 2014-04-08 | Seiko Epson Corporation | Capacitive load drive circuit, liquid injector, and medical device |
US8757749B2 (en) | 2011-01-18 | 2014-06-24 | Seiko Epson Corporation | Capacitive load driving circuit and liquid ejection device |
JP2015164783A (ja) * | 2014-03-03 | 2015-09-17 | セイコーエプソン株式会社 | 液体吐出装置、ヘッドユニットおよび液体吐出装置の制御方法 |
JP2015182341A (ja) * | 2014-03-25 | 2015-10-22 | セイコーエプソン株式会社 | 液体吐出装置、ヘッドユニットおよび液体吐出装置の制御方法 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1964679B1 (en) * | 2005-12-22 | 2011-09-07 | Seiko Epson Corporation | Ink jet printer head drive device, drive control method, and ink jet printer |
CN101898451B (zh) | 2006-01-17 | 2012-09-26 | 精工爱普生株式会社 | 驱动电路及液滴喷出装置 |
WO2007083671A1 (ja) * | 2006-01-20 | 2007-07-26 | Seiko Epson Corporation | インクジェットプリンタのヘッド駆動装置およびインクジェットプリンタ |
JPWO2007086375A1 (ja) * | 2006-01-25 | 2009-06-18 | セイコーエプソン株式会社 | インクジェットプリンタのヘッド駆動装置及びヘッド駆動方法、並びにインクジェットプリンタ |
JP5141117B2 (ja) * | 2006-07-24 | 2013-02-13 | セイコーエプソン株式会社 | 液体噴射装置および印刷装置 |
JP2008132765A (ja) * | 2006-10-25 | 2008-06-12 | Seiko Epson Corp | 液体噴射装置および印刷装置 |
US7731317B2 (en) * | 2007-01-12 | 2010-06-08 | Seiko Epson Corporation | Liquid jetting device |
JP5256768B2 (ja) * | 2008-02-21 | 2013-08-07 | セイコーエプソン株式会社 | 液体噴射装置 |
JP5471325B2 (ja) * | 2009-11-10 | 2014-04-16 | セイコーエプソン株式会社 | 液体噴射装置及び印刷装置及び手術具 |
JP5494108B2 (ja) * | 2010-03-26 | 2014-05-14 | セイコーエプソン株式会社 | 容量性負荷駆動装置、液体噴射装置および印刷装置 |
JP5625437B2 (ja) * | 2010-03-30 | 2014-11-19 | セイコーエプソン株式会社 | 手術機器 |
JP6291910B2 (ja) | 2014-03-03 | 2018-03-14 | セイコーエプソン株式会社 | 液体吐出装置および液体吐出装置の制御方法 |
JP6390843B2 (ja) | 2014-12-10 | 2018-09-19 | セイコーエプソン株式会社 | 液体吐出装置、ヘッドユニット、容量性負荷駆動回路および容量性負荷駆動用集積回路装置 |
CN108016145B (zh) * | 2017-11-22 | 2019-06-21 | 杭州宏华数码科技股份有限公司 | 导带式喷墨印花机及其传动误差补偿方法 |
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JP2009131990A (ja) * | 2007-11-29 | 2009-06-18 | Seiko Epson Corp | 容量性負荷の駆動装置及びその駆動方法 |
JP2009153272A (ja) * | 2007-12-19 | 2009-07-09 | Fuji Xerox Co Ltd | 容量性負荷の駆動回路及び液滴噴射装置 |
JP2009154478A (ja) * | 2007-12-27 | 2009-07-16 | Seiko Epson Corp | 液体噴射装置 |
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- 2009-11-10 JP JP2009257375A patent/JP5471325B2/ja not_active Expired - Fee Related
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- 2010-10-28 US US12/914,377 patent/US8256858B2/en active Active
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2012
- 2012-07-23 US US13/555,740 patent/US8733873B2/en not_active Expired - Fee Related
-
2014
- 2014-04-16 US US14/254,726 patent/US8939533B2/en not_active Expired - Fee Related
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8690281B2 (en) | 2010-11-15 | 2014-04-08 | Seiko Epson Corporation | Capacitive load driving circuit, liquid ejecting apparatus, and medical apparatus |
US8692590B2 (en) | 2010-11-15 | 2014-04-08 | Seiko Epson Corporation | Capacitive load drive circuit, liquid injector, and medical device |
US8757749B2 (en) | 2011-01-18 | 2014-06-24 | Seiko Epson Corporation | Capacitive load driving circuit and liquid ejection device |
US9073076B2 (en) | 2011-01-18 | 2015-07-07 | Seiko Epson Corporation | Capacitive load driving circuit and liquid ejection device |
JP2013014084A (ja) * | 2011-07-05 | 2013-01-24 | Seiko Epson Corp | 圧電素子駆動回路、および流体噴射装置 |
JP2015164783A (ja) * | 2014-03-03 | 2015-09-17 | セイコーエプソン株式会社 | 液体吐出装置、ヘッドユニットおよび液体吐出装置の制御方法 |
JP2015182341A (ja) * | 2014-03-25 | 2015-10-22 | セイコーエプソン株式会社 | 液体吐出装置、ヘッドユニットおよび液体吐出装置の制御方法 |
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US20120287187A1 (en) | 2012-11-15 |
US8256858B2 (en) | 2012-09-04 |
US8939533B2 (en) | 2015-01-27 |
US8733873B2 (en) | 2014-05-27 |
US20110109674A1 (en) | 2011-05-12 |
JP5471325B2 (ja) | 2014-04-16 |
US20140228870A1 (en) | 2014-08-14 |
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