JP6836135B2 - 液体噴射装置 - Google Patents
液体噴射装置 Download PDFInfo
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- JP6836135B2 JP6836135B2 JP2016219655A JP2016219655A JP6836135B2 JP 6836135 B2 JP6836135 B2 JP 6836135B2 JP 2016219655 A JP2016219655 A JP 2016219655A JP 2016219655 A JP2016219655 A JP 2016219655A JP 6836135 B2 JP6836135 B2 JP 6836135B2
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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
- B41J2/135—Nozzles
- B41J2/165—Preventing or detecting of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16579—Detection means therefor, e.g. for nozzle clogging
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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
- B41J2/0451—Control methods or devices therefor, e.g. driver circuits, control circuits for detecting failure, e.g. clogging, malfunctioning actuator
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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
- B41J2/02—Ink jet characterised by the jet generation process generating a continuous ink jet
- B41J2/025—Ink jet characterised by the jet generation process generating a continuous ink jet by vibration
-
- 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
- B41J2/04553—Control methods or devices therefor, e.g. driver circuits, control circuits detecting ambient temperature
-
- 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
-
- 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
- B41J2/04588—Control methods or devices therefor, e.g. driver circuits, control circuits using a specific waveform
-
- 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
- B41J2/17—Ink jet characterised by ink handling
- B41J2/19—Ink jet characterised by ink handling for removing air bubbles
-
- 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
- B41J2/17—Ink jet characterised by ink handling
- B41J2/20—Ink jet characterised by ink handling for preventing or detecting contamination of compounds
-
- 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
- B41J2/21—Ink jet for multi-colour printing
- B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
- B41J2/2142—Detection of malfunctioning nozzles
-
- 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
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
- B41J19/66—Carriage-release mechanisms
-
- 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
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
- B41J19/68—Carriage-return mechanisms, e.g. manually actuated
-
- 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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
Description
前記圧電素子を駆動したときに生じる振動による当該圧電素子の起電力に基づいて前記空部に連通するノズルからの液体の噴射について検査を行う検査機構と、
を備える液体噴射装置であって、
複数の前記空部に対応した複数の圧電素子のうちの検査対象の第1圧電素子に印加する第1駆動信号と、前記第1圧電素子とは異なる第2圧電素子に印加する第2駆動信号を発生する信号発生回路を備え、
前記第2駆動信号は、少なくとも前記第1駆動信号により前記第1圧電素子およびこれに対応する前記可撓面からなる第1振動部が駆動されたときの振動に基づき前記検査機構により検査が行われる検出期間において、前記第2圧電素子およびこれに対応する前記可撓面からなる第2振動部を変形させた状態を維持することを特徴とする。
前記温度検出機構により検出される温度に応じて前記調整電圧が変化する構成を採用することが望ましい。
上記第1の実施形態においては、検知用振動部である圧電素子16aに対して隔壁25を1つ挟んで隣り合う圧電素子16b,16cが調整用振動部として機能する構成を例示したが、これには限られず、例えば、図10に示される第4の実施形態のように、検知用振動部(圧電素子16a)と調整用振動部(圧電素子16d,16e)との間に検知および調整に係らない別の圧電素子16(圧電素子16b,16c)が配置されていてもよい。要するに、調整用振動部として駆動したときに検知用振動部にテンションが作用するような位置関係にある圧電素子16およびこれに対応する可撓面であれば、調整用振動部として機能させることが可能である。
Claims (5)
- 複数の空部が形成された基板と、前記基板における前記空部の一部を区画する可撓面と、前記空部に対応して前記可撓面を挟んで反対側に設けられた圧電素子と、を有する液体噴射ヘッドと、
前記圧電素子を駆動したときに生じる振動による当該圧電素子の起電力に基づいて前記空部に連通するノズルからの液体の噴射について検査を行う検査機構と、
を備える液体噴射装置であって、
複数の前記空部に対応した複数の圧電素子のうちの検査対象の第1圧電素子に印加する第1駆動信号と、前記第1圧電素子とは異なる第2圧電素子に印加する第2駆動信号を発生する信号発生回路を備え、
前記第2駆動信号は、少なくとも前記第1駆動信号により前記第1圧電素子およびこれに対応する前記可撓面からなる第1振動部が駆動されたときの振動に基づき前記検査機構により検査が行われる検出期間において、前記第2圧電素子およびこれに対応する前記可撓面からなる第2振動部を変形させた状態を維持し、
前記第2駆動信号は、前記検出期間において一定の調整電圧に維持し、
前記液体噴射ヘッドの温度を検出する温度検出機構を備え、
前記温度検出機構により検出される温度に応じて前記調整電圧が変化することを特徴とする液体噴射装置。 - 前記第2駆動信号は、異なる複数の前記調整電圧を有することを特徴とする請求項1に記載の液体噴射装置。
- 複数の空部が形成された基板と、前記基板における前記空部の一部を区画する可撓面と、前記空部に対応して前記可撓面を挟んで反対側に設けられた圧電素子と、を有する液体噴射ヘッドと、
前記圧電素子を駆動したときに生じる振動による当該圧電素子の起電力に基づいて前記空部に連通するノズルからの液体の噴射について検査を行う検査機構と、
を備える液体噴射装置であって、
複数の前記空部に対応した複数の圧電素子のうちの検査対象の第1圧電素子に印加する第1駆動信号と、前記第1圧電素子とは異なる第2圧電素子に印加する第2駆動信号を発生する信号発生回路を備え、
前記第2駆動信号は、少なくとも前記第1駆動信号により前記第1圧電素子およびこれに対応する前記可撓面からなる第1振動部が駆動されたときの振動に基づき前記検査機構により検査が行われる検出期間において、前記第2圧電素子およびこれに対応する前記可撓面からなる第2振動部を変形させた状態を維持し、
前記第2駆動信号は、前記検出期間の前に前記第1駆動信号により前記第1振動部が振動される振動発生期間において前記第2振動部を振動させて前記第1振動部の振動を増幅させる波形要素を発生することを特徴とする液体噴射装置。 - 前記第2駆動信号は、前記検出期間において一定の調整電圧に維持されることを特徴と
する請求項3に記載の液体噴射装置。 - 前記第1振動部と前記第2振動部とは、前記空部を区画する壁を1つ隔てて互いに隣接していることを特徴とする請求項1から請求項4の何れか一項に記載の液体噴射装置。
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JP2016219655A JP6836135B2 (ja) | 2016-11-10 | 2016-11-10 | 液体噴射装置 |
US15/804,332 US10160214B2 (en) | 2016-11-10 | 2017-11-06 | Liquid ejecting apparatus |
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JP2016219655A JP6836135B2 (ja) | 2016-11-10 | 2016-11-10 | 液体噴射装置 |
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JP2018075789A JP2018075789A (ja) | 2018-05-17 |
JP6836135B2 true JP6836135B2 (ja) | 2021-02-24 |
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JP7047386B2 (ja) * | 2018-01-10 | 2022-04-05 | セイコーエプソン株式会社 | 異常を警告する方法および異常警告システム |
JP7293646B2 (ja) * | 2018-12-21 | 2023-06-20 | セイコーエプソン株式会社 | 液滴吐出ヘッド |
JP2021115727A (ja) * | 2020-01-23 | 2021-08-10 | セイコーエプソン株式会社 | 液体吐出方法、駆動パルス決定プログラム、および、液体吐出装置 |
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JP3867792B2 (ja) * | 2003-03-27 | 2007-01-10 | セイコーエプソン株式会社 | 液滴吐出装置及びインクジェットプリンタ |
JP3867794B2 (ja) * | 2003-04-16 | 2007-01-10 | セイコーエプソン株式会社 | 液滴吐出装置、インクジェットプリンタ及びヘッド異常検出・判定方法 |
KR101407583B1 (ko) * | 2007-12-27 | 2014-06-13 | 삼성디스플레이 주식회사 | 헤드고장 판별장치 및 방법 |
JP5533238B2 (ja) | 2010-05-18 | 2014-06-25 | セイコーエプソン株式会社 | 液体吐出装置 |
JP5978744B2 (ja) * | 2012-05-02 | 2016-08-24 | セイコーエプソン株式会社 | 液体吐出装置、検査方法、及び、プログラム |
JP6065524B2 (ja) * | 2012-11-06 | 2017-01-25 | セイコーエプソン株式会社 | 液体噴射装置、および、液体噴射装置の制御方法 |
JP5794346B2 (ja) | 2014-04-24 | 2015-10-14 | セイコーエプソン株式会社 | 液体吐出装置 |
JP6613840B2 (ja) * | 2015-01-19 | 2019-12-04 | セイコーエプソン株式会社 | 液体吐出ヘッドの検査方法、および液体吐出装置 |
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US10160214B2 (en) | 2018-12-25 |
JP2018075789A (ja) | 2018-05-17 |
US20180126738A1 (en) | 2018-05-10 |
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