JP2020116911A - 液体吐出ヘッド、及びそれを備えた液体吐出装置 - Google Patents
液体吐出ヘッド、及びそれを備えた液体吐出装置 Download PDFInfo
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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
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with 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
- B41J2/17—Ink jet characterised by ink handling
- B41J2/18—Ink recirculation systems
-
- 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
-
- 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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
- B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
-
- 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
-
- 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
- B41J2002/14306—Flow passage between manifold and chamber
-
- 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
- B41J2002/14338—Multiple pressure elements per ink chamber
-
- 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
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/01—Embodiments of or processes related to ink-jet heads
- B41J2202/12—Embodiments of or processes related to ink-jet heads with ink circulating through the whole print head
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- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Ink Jet (AREA)
Abstract
Description
1d ドライバIC
5 制御装置
21 ノズル
23a 上流側圧力室
23b 下流側圧力室
24a 上流側ディセンダ流路
24b 下流側ディセンダ流路
25a 上流側絞り流路
25b 下流側絞り流路
31,32 回収流路
33 供給流路
Claims (9)
- 複数の個別流路と、
前記複数の個別流路の入口に接続され、前記複数の個別流路に液体を供給する供給流路と、
前記複数の個別流路の出口に接続され、前記複数の個別流路から液体を回収する回収流路と、
を備え、
前記複数の個別流路それぞれは、
ノズルと、
前記ノズルと前記供給流路との間に配置された上流側圧力室と、
前記ノズルと前記回収流路との間に配置された下流側圧力室と、
前記供給流路と前記上流側圧力室とを接続する上流側絞り流路と、
前記回収流路と前記下流側圧力室とを接続する下流側絞り流路と、
を有しており、
前記上流側圧力室内の液体に圧力を付与する上流側アクチュエータと、
前記下流側圧力室内の液体に圧力を付与する下流側アクチュエータと、
をさらに備え、
前記上流側絞り流路の流路抵抗が、前記下流側絞り流路の流路抵抗よりも小さいことを特徴とする液体吐出ヘッド。 - 前記上流側絞り流路は、前記下流側絞り流路と比べて流路の長さが短いことを特徴とする請求項1に記載の液体吐出ヘッド。
- 前記複数の個別流路それぞれは、
前記上流側圧力室と前記ノズルとを接続する上流側接続流路と、
前記下流側圧力室と前記ノズルとを接続する下流側接続流路とをさらに有しており、
前記上流側接続流路の流路抵抗が、前記下流側接続流路の流路抵抗よりも小さいことを特徴とする請求項1又は2に記載の液体吐出ヘッド。 - 前記上流側絞り流路の少なくとも一部の流路部分の断面は、円形状であることを特徴とする請求項1〜3のいずれか一項に記載の液体吐出ヘッド。
- 前記上流側圧力室と、前記下流側圧力室とは互いに同じ容積であることを特徴とする請求項1〜4のいずれか一項に記載の液体吐出ヘッド。
- 前記上流側絞り流路の流路抵抗は、前記下流側絞り流路の流路抵抗の60%以上90%以下であることを特徴とする請求項1〜5のいずれか一項に記載の液体吐出ヘッド。
- 前記上流側アクチュエータ及び前記下流側アクチュエータを駆動する駆動装置をさらに備え、
前記駆動装置における、前記上流側アクチュエータを駆動する駆動電圧と、前記下流側アクチュエータを駆動する駆動電圧とは互いに同じであることを特徴とする請求項1〜6のいずれか一項に記載の液体吐出ヘッド。 - 請求項1〜7のいずれか一項に記載の液体吐出ヘッドと、
前記液体吐出ヘッドを制御する制御装置と
を備え、
前記液体吐出ヘッドは、
前記上流側アクチュエータ及び前記下流側アクチュエータを駆動する駆動装置をさらに備え、
前記制御装置は、
前記ノズルから液体を吐出させる際には、前記上流側アクチュエータの駆動タイミングと、前記下流側アクチュエータの駆動タイミングとが異なるように前記駆動装置を制御することを特徴とする液体吐出装置。 - 前記制御装置は、
前記ノズルから液体を吐出させる際には、前記上流側アクチュエータの駆動タイミングが、前記下流側アクチュエータの駆動タイミングよりも遅れるように前記駆動装置を制御することを特徴とする請求項8に記載の液体吐出装置。
Priority Applications (2)
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JP2019012028A JP7293666B2 (ja) | 2019-01-28 | 2019-01-28 | 液体吐出ヘッド、及びそれを備えた液体吐出装置 |
US16/697,355 US10864727B2 (en) | 2019-01-28 | 2019-11-27 | Liquid discharge head and liquid discharge apparatus provided with the same |
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JP2019012028A JP7293666B2 (ja) | 2019-01-28 | 2019-01-28 | 液体吐出ヘッド、及びそれを備えた液体吐出装置 |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2014061695A (ja) * | 2012-09-20 | 2014-04-10 | Samsung Electro-Mechanics Co Ltd | インクジェットプリントヘッド |
JP2018114713A (ja) * | 2017-01-20 | 2018-07-26 | 富士ゼロックス株式会社 | 液滴吐出ヘッド、液滴吐出装置 |
US20190001672A1 (en) * | 2017-06-29 | 2019-01-03 | Canon Kabushiki Kaisha | Liquid ejection head and liquid ejection apparatus |
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US10259219B2 (en) | 2017-01-13 | 2019-04-16 | Fuji Xerox Co., Ltd. | Liquid droplet ejection head and liquid droplet ejection apparatus |
JP2018114675A (ja) | 2017-01-18 | 2018-07-26 | 富士ゼロックス株式会社 | 液滴吐出ヘッド、液滴吐出装置 |
JP7167697B2 (ja) * | 2018-12-21 | 2022-11-09 | セイコーエプソン株式会社 | 液体噴射ヘッド及び液体噴射装置 |
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- 2019-01-28 JP JP2019012028A patent/JP7293666B2/ja active Active
- 2019-11-27 US US16/697,355 patent/US10864727B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014061695A (ja) * | 2012-09-20 | 2014-04-10 | Samsung Electro-Mechanics Co Ltd | インクジェットプリントヘッド |
JP2018114713A (ja) * | 2017-01-20 | 2018-07-26 | 富士ゼロックス株式会社 | 液滴吐出ヘッド、液滴吐出装置 |
US20190001672A1 (en) * | 2017-06-29 | 2019-01-03 | Canon Kabushiki Kaisha | Liquid ejection head and liquid ejection apparatus |
JP2019010758A (ja) * | 2017-06-29 | 2019-01-24 | キヤノン株式会社 | 液体吐出ヘッドおよび液体吐出装置 |
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US20200238704A1 (en) | 2020-07-30 |
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