WO2010044407A1 - 印刷ヘッド、印刷装置 - Google Patents
印刷ヘッド、印刷装置 Download PDFInfo
- Publication number
- WO2010044407A1 WO2010044407A1 PCT/JP2009/067756 JP2009067756W WO2010044407A1 WO 2010044407 A1 WO2010044407 A1 WO 2010044407A1 JP 2009067756 W JP2009067756 W JP 2009067756W WO 2010044407 A1 WO2010044407 A1 WO 2010044407A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- print head
- piezoelectric vibrator
- substrate
- piezoelectric
- discharge liquid
- Prior art date
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Classifications
-
- 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
- B41J2/14274—Structure of print heads with piezoelectric elements of stacked structure type, deformed by compression/extension 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
- 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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2002/14419—Manifold
-
- 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
- B41J2202/09—Ink jet technology used for manufacturing optical filters
Definitions
- the present invention relates to a print head and a printing apparatus for discharging a discharge liquid from a discharge hole and landing on a discharge target such as a substrate, and more particularly to a print head and a printing apparatus used for manufacturing a liquid crystal or an EL display element.
- inkjet type ejection devices have been used in the production of color filters for liquid crystal display devices and organic EL display devices.
- FIG. 4 (a) the reference numeral 101 (b) is a portion of the print head of such a discharge device
- reference numeral A 0 is a schematic front view of the internal structure of FIG. 4 (a)
- Reference B 0 is a schematic side view.
- a nozzle plate 106 is provided below the housing 102 of the print head 101, and a plurality of pressure generation chambers 109 are provided on the nozzle plate 106.
- a discharge hole 110 is formed at the lower end of each pressure generating chamber 109, and the upper end is connected to a common ink chamber 108 provided inside the housing 102.
- a piezoelectric vibrator 104 is disposed above each pressure generation chamber 109.
- Discharge liquid is supplied to the common ink chamber 108 through the supply path 117 from an ink tank that is disposed outside the print head 101 and stores the discharge liquid.
- the discharge liquid supplied into the common ink chamber 108 is distributed to each pressure generation chamber 109 and is filled with the discharge liquid.
- the elastic plate 105 positioned on the pressure generation chamber 109 is exposed inside each pressure generation chamber 109, and the piezoelectric vibrator 104 is in contact with the surface opposite to the exposed portion of the elastic plate 105.
- the housing 102 of the print head 101 is provided with a recess, and a fixed substrate 103 is disposed in the recess.
- Each piezoelectric vibrator 104 is fixed to its fixed substrate 103, and when a voltage is applied to the piezoelectric vibrator 104, the piezoelectric vibrator 104 vibrates in the longitudinal direction and expands the pressure generation chamber 109 via the elastic plate 105. The contraction is performed, and the discharge liquid stored in the pressure generation chamber 109 is discharged from the discharge hole 110 toward the substrate.
- the arrangement of the piezoelectric vibrator 104 is affixed on the fixed substrate 103 by an adhesive layer 125, and the residual vibration of the expanded and contracted pressure generating chamber 109 is applied with a voltage via the fixed substrate 103.
- the piezoelectric vibrator 104 that did not exist is vibrated.
- the piezoelectric vibrator 104 transmits the vibration to the pressure generation chamber 109 that is in contact with the elastic plate 105, and crosstalk occurs in which discharge liquid is discharged from the pressure generation chamber. There is.
- the present invention was created to solve the above-described problems related to crosstalk, and prevents the residual vibration in the pressure generating chamber from propagating to other pressure generating chambers via the piezoelectric vibrator and the fixed substrate.
- An object of the present invention is to provide an ink jet type ejection device and a print head with stable droplet ejection performance.
- the present invention has a plurality of piezoelectric vibrators having a longitudinal direction, and when the piezoelectric vibrators vibrate in the longitudinal direction, different pressure generating chambers are expanded and contracted, and the respective pressure generating chambers are expanded.
- the present invention is the print head formed such that the lengths of the piezoelectric vibrators in the longitudinal direction are different from each other.
- each piezoelectric vibrator is brought into contact with the discharge liquid in the pressure generating chamber via an elastic member, and the other end side of each piezoelectric vibrator is attached to the fixed substrate by an adhesive layer.
- An attached print head includes a substrate stage on which a substrate to be ejected is disposed, and any one of the above print heads, the substrate stage and the print head being configured to be relatively movable, and being ejected from the print head.
- the printing apparatus is configured such that the discharge liquid lands on the substrate.
- Example of printing apparatus of the present invention A 1 : Internal front view of an example print head of the present invention B 1 : Internal side view of the print head A 2 : Internal front view of a print head according to another example of the present invention A 0 : Front view of the inside of a conventional print head B 0 : Internal side view of the print head
- Reference numeral 50 in FIG. 1 is a printing apparatus according to an example of the present invention.
- the printing apparatus 50 includes a pedestal 51, and a substrate stage 53 is disposed on the pedestal 51 via a stage moving device 52.
- the stage moving device 52 is provided with a device for moving the substrate stage 53, and the substrate stage 53 can reciprocate on the pedestal 51.
- a bridge 54 is disposed above the movement range of the substrate stage 53.
- the bridge 54 is provided with a head moving device 56, and the print head 1 is movably attached to the head moving device 56.
- the head moving device 56 is provided with a device for moving the print head 1, and the print head 1 can be reciprocated at a position above the substrate stage 53 in a direction perpendicular to the reciprocating direction of the substrate stage 53. It is.
- the printing apparatus 50 is provided with a discharge liquid tank 57 in which the discharge liquid is stored.
- a discharge liquid tank 57 is connected to the print head 1. As will be described later, the discharge liquid is supplied from the discharge liquid tank 57 and can be discharged.
- Reference numeral 58 denotes a substrate which is a discharge target of the discharge liquid, and is disposed on the substrate stage 53.
- the print head 1 By relatively moving the print head 1 and the substrate stage 53, the print head 1 can be moved to a desired position above the substrate 58. In this state, the print head 1 is sent from a control device (not shown).
- a discharge signal When a discharge signal is output, the discharge liquid is discharged from the print head 1 and can be landed on a desired position on the surface of the substrate 58.
- FIG. 2 reference numeral A 1 in (a) is an internal front view of the print head 1
- reference numeral B 1 in FIG. 2 (b) is an internal side view.
- the internal structure of the print head 1 will be described.
- the print head 1 has a housing 2, and a nozzle plate 6 is attached to the housing 2.
- the nozzle plate 6 is attached to the lower end of the housing 2 so that the surface facing the lower side of the nozzle plate 6 can face the substrate stage 53.
- a plurality of pressure generating chambers 9 are provided inside the nozzle plate 6, and a common ink chamber 8 is provided inside the housing 2.
- the nozzle plate 6 is provided with a connection path 18 a having one end connected to a different pressure generating chamber 9 and the other end connected to the common ink chamber 8.
- a supply path 17 that connects the chamber 8 to a pipe 7 connected to a discharge liquid tank 57 is provided.
- the discharge liquid supplied to the common ink chamber 8 from the discharge liquid tank 57 through the pipe 7 and the supply path 17 is distributed to each pressure generating chamber 9 through the connection path 18a.
- An opening is formed in a portion of the nozzle plate 6 on the side of the housing 2 that is the wall surface of the pressure generating chamber 9, and the opening is an elastic member 5 (here, a metal film having a thickness of 5 ⁇ m) such as an elastic plate or an elastic film. ),
- the discharge member is supplied to the pressure generation chamber 9 and the gas is removed from the inside of the pressure generation chamber 9. When the discharge solution is full, the elastic member 5 comes into contact with the discharge solution.
- the print head 1 has a plurality of elongated piezoelectric vibrators 4, and one end of the piezoelectric vibrator 4 is located on the surface of the elastic member 5 opposite to the surface in contact with the discharge liquid in the pressure generating chamber 9. Each is in contact. Electrodes 23 and 24 are respectively formed on the front and back surfaces of the piezoelectric vibrator 4.
- a circuit board 21 is attached to the housing 2, and circuit electrodes 22 formed on the circuit board 21 are in contact with and electrically connected to the electrodes 23 and 24 of the piezoelectric vibrator 4. And a voltage between the electrodes 23 and 24 on the back surface.
- the fixed substrate 3 is fixed to the housing 2, and each piezoelectric vibrator 4 is bonded to the fixed substrate 3 with an adhesive layer 25 on the end side opposite to the elastic member 5.
- Each piezoelectric vibrator 4 is bonded in parallel to each other.
- the fixed substrate 3 is erected on the nozzle plate 6, and a portion of the fixed substrate 3 on the nozzle plate 6 side is formed with a small thickness, and a gap 16 is formed between the fixed substrate 3 and the piezoelectric vibrator 4 in that portion. Is formed.
- a voltage is applied between the front and back surfaces of the piezoelectric vibrator 4
- each piezoelectric vibrator 4 vibrates in the longitudinal direction, causing the elastic member 5 to bulge outside the pressure generation chamber 9, or the inside of the pressure generation chamber 9.
- the volume of the pressure generating chamber 9 is expanded / contracted.
- a portion where the piezoelectric vibrator 4 and the fixed substrate 3 are bonded also vibrates in the longitudinal direction.
- the nozzle plate 6 is provided with a discharge hole 10 for each pressure generation chamber 9, and each discharge hole 10 is connected to a different pressure generation chamber 9 by a discharge path 18 b provided in the nozzle plate 6. .
- a voltage is applied to the piezoelectric vibrator 4 selected by the control device and the pressure generation chamber 9 expands and contracts, the discharge liquid in the pressure generation chamber 9 is discharged from the discharge hole 10.
- the resonance frequencies of the vibrations of the piezoelectric vibrators 4 disposed on the same fixed substrate 3 are different from each other, and the elastic member is arranged so that the piezoelectric vibrators 4 having the same resonance frequency are not disposed on the fixed substrate 3.
- Piezoelectric vibrators 4 having different lengths from the end in contact with 5 to the opposite end are arranged.
- each piezoelectric vibrator 4 When the length of the piezoelectric vibrator 4 is different, the magnitude of the applied voltage and the magnitude of the vibration in the length direction are different for each piezoelectric vibrator 4.
- the relationship between the magnitude of the voltage applied to each piezoelectric vibrator 4 and the amount of discharged discharge liquid is measured in advance, and each discharge hole 10 A voltage value is obtained for each piezoelectric vibrator 4 so that the volume of the discharged liquid that lands on the substrate 58 becomes a constant value if the number of ejections is the same, and each piezoelectric vibrator 4 is vibrated with that voltage value.
- N piezoelectric vibrators 4 having different lengths are shown in FIGS. 2A and 2B.
- the length of the shortest piezoelectric vibrator 4 is L 1
- the longest piezoelectric vibrator 4 is long.
- the length L k of the other piezoelectric vibrators 4 is L 1 ⁇ L k ⁇ L N
- the piezoelectric vibrators 4 having the shortest length L 1 are arranged in parallel.
- the N vibrators 4 are arranged at one end, the piezoelectric vibrator 4 having the longest length L N is arranged at the other end, and the piezoelectric vibrators 4 having different lengths are parallel to each other in the order of length. Are lined up.
- the present invention is not limited to those in which the piezoelectric vibrators 4 are arranged in the order of length, and different lengths are used so that the resonance frequencies are different as shown in the front view of the reference numeral A 2 in FIG.
- the piezoelectric vibrators 4 having L 1 to L N may be attached to the fixed substrate 3 in parallel with each other in a random order.
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
- Electroluminescent Light Sources (AREA)
- Coating Apparatus (AREA)
Abstract
Description
印刷ヘッド101の筺体102の下方位置にはノズルプレート106が設けられており、ノズルプレート106には、複数の圧力発生室109が設けられている。
各圧力発生室109の上方位置には、それぞれ圧電振動子104が配置されている。
各圧力発生室109には、共通インク室108内に供給された吐出液が分配され、吐出液で充満される。
圧力発生室109上に位置する弾性板105は、各圧力発生室109の内部に露出されており、圧電振動子104は、弾性板105の露出部分の反対側の面に当接されている。
また、本発明は、前記各圧電振動子の長手方向の長さは互いに異なるように形成された印刷ヘッドである。
また、本発明は、前記各圧電振動子の一端は、弾性部材を介して前記圧力発生室内部の前記吐出液と接触され、前記各圧電振動子の他端側が、接着剤層によって固定基板に取り付けられた印刷ヘッドである。
また、本発明は、吐出対象物の基板を配置する基板ステージと、上記いずれかの印刷ヘッドとを有し、前記基板ステージと前記印刷ヘッドが相対移動可能に構成され、前記印刷ヘッドから吐出された前記吐出液が前記基板に着弾するように構成された印刷装置である。
3……固定基板
4……圧電振動子
5……弾性部材
9……圧力発生室
10……吐出孔
25……接着剤層
53……基板ステージ
58……基板
この印刷装置50は台座51を有しており、該台座51上には、ステージ移動装置52を介して基板ステージ53が配置されている。ステージ移動装置52には基板ステージ53を移動させる装置が設けられており、基板ステージ53は、台座51上で往復移動可能である。
印刷ヘッド1には吐出液タンク57が接続されており、後述するように、吐出液タンク57から吐出液が供給され、吐出液を吐出できるように構成されている。
印刷ヘッド1の内部構造を説明すると、印刷ヘッド1は、筺体2を有しており、筺体2には、ノズルプレート6が取り付けられている。ここではノズルプレート6は、筺体2の下端部に取り付けられ、ノズルプレート6の下方を向く表面が基板ステージ53と対面できるようになっている。
また、ノズルプレート6の内部には、一端が異なる圧力発生室9に接続され、他端が共通インク室8に接続された接続路18aが設けられており、筺体2の内部には、共通インク室8を吐出液タンク57に接続されたパイプ7に接続する供給路17が設けられている。
ノズルプレート6のうち、圧力発生室9の壁面となっている筺体2側の部分には開口が形成され、その開口は弾性板や弾性フィルム等の弾性部材5(ここでは厚さ5μmの金属フィルム)で塞がれており、圧力発生室9に吐出液が供給され、圧力発生室9の内部から気体が除去された状態で、吐出液が充満すると、弾性部材5は吐出液と接触する。
圧電振動子4の表面と裏面には、電極23、24がそれぞれ形成されている。
圧電振動子4の表面と裏面の間に電圧が印加されると、各圧電振動子4は長手方向に振動し、弾性部材5を圧力発生室9の外部に膨らませたり、圧力発生室9の内部に凹ませることで、圧力発生室9の容積を膨張・収縮させる。圧電振動子4と固定基板3とが接着された部分も長手方向に振動する。
Claims (4)
- 長手方向を有する複数の圧電振動子を有し、前記圧電振動子が長手方向に振動すると、それぞれ異なる圧力発生室を膨張・伸縮させ、前記各圧力発生室に設けられた吐出孔から吐出液を吐出させる印刷ヘッドであって、
前記各圧電振動子の振動の共振周波数は異なるようにされた印刷ヘッド。 - 前記各圧電振動子の長手方向の長さは互いに異なるように形成された請求項1記載の印刷ヘッド。
- 前記各圧電振動子の一端は、弾性部材を介して前記圧力発生室内部の前記吐出液と接触され、
前記各圧電振動子の他端側が、接着剤層によって固定基板に取り付けられた請求項1又は請求項2のいずれか1項記載の印刷ヘッド。 - 吐出対象物の基板を配置する基板ステージと、
請求項1乃至請求項3のいずれか1項記載の印刷ヘッドとを有し、
前記基板ステージと前記印刷ヘッドが相対移動可能に構成され、
前記印刷ヘッドから吐出された前記吐出液が前記基板に着弾するように構成された印刷装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09820585A EP2338611A1 (en) | 2008-10-16 | 2009-10-14 | Print head, printer |
CN2009801409978A CN102186603A (zh) | 2008-10-16 | 2009-10-14 | 印刷头、印刷装置 |
JP2010533905A JPWO2010044407A1 (ja) | 2008-10-16 | 2009-10-14 | 印刷ヘッド、印刷装置 |
US13/085,779 US20110211027A1 (en) | 2008-10-16 | 2011-04-13 | Print head, printer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008-267663 | 2008-10-16 | ||
JP2008267663 | 2008-10-16 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/085,779 Continuation US20110211027A1 (en) | 2008-10-16 | 2011-04-13 | Print head, printer |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010044407A1 true WO2010044407A1 (ja) | 2010-04-22 |
Family
ID=42106570
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/067756 WO2010044407A1 (ja) | 2008-10-16 | 2009-10-14 | 印刷ヘッド、印刷装置 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110211027A1 (ja) |
EP (1) | EP2338611A1 (ja) |
JP (1) | JPWO2010044407A1 (ja) |
KR (1) | KR20110053484A (ja) |
CN (1) | CN102186603A (ja) |
TW (1) | TW201022039A (ja) |
WO (1) | WO2010044407A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4011630A1 (en) * | 2020-12-14 | 2022-06-15 | Canon Production Printing Holding B.V. | Cleaning method for ink jet imaging device |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0929962A (ja) * | 1995-07-21 | 1997-02-04 | Hitachi Koki Co Ltd | インクジェットプリンタ |
JPH1134327A (ja) * | 1997-07-19 | 1999-02-09 | Fuji Xerox Co Ltd | インクジェット記録ヘッド |
JP2000108348A (ja) | 1998-10-06 | 2000-04-18 | Seiko Epson Corp | インクジェット式記録ヘッド、及びこれを用いた画像形成装置 |
JP2008213159A (ja) * | 2007-02-28 | 2008-09-18 | Ulvac Japan Ltd | 吐出ヘッド、吐出装置 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1547773B1 (en) * | 2002-05-22 | 2011-03-23 | Seiko Epson Corporation | Liquid jet device |
JP2004330772A (ja) * | 2003-04-18 | 2004-11-25 | Ricoh Printing Systems Ltd | インクジェットヘッド及びそれを搭載した液滴吐出装置 |
-
2009
- 2009-10-14 WO PCT/JP2009/067756 patent/WO2010044407A1/ja active Application Filing
- 2009-10-14 JP JP2010533905A patent/JPWO2010044407A1/ja active Pending
- 2009-10-14 CN CN2009801409978A patent/CN102186603A/zh active Pending
- 2009-10-14 EP EP09820585A patent/EP2338611A1/en not_active Withdrawn
- 2009-10-14 KR KR1020117008602A patent/KR20110053484A/ko not_active Application Discontinuation
- 2009-10-16 TW TW098135082A patent/TW201022039A/zh unknown
-
2011
- 2011-04-13 US US13/085,779 patent/US20110211027A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0929962A (ja) * | 1995-07-21 | 1997-02-04 | Hitachi Koki Co Ltd | インクジェットプリンタ |
JPH1134327A (ja) * | 1997-07-19 | 1999-02-09 | Fuji Xerox Co Ltd | インクジェット記録ヘッド |
JP2000108348A (ja) | 1998-10-06 | 2000-04-18 | Seiko Epson Corp | インクジェット式記録ヘッド、及びこれを用いた画像形成装置 |
JP2008213159A (ja) * | 2007-02-28 | 2008-09-18 | Ulvac Japan Ltd | 吐出ヘッド、吐出装置 |
Also Published As
Publication number | Publication date |
---|---|
CN102186603A (zh) | 2011-09-14 |
KR20110053484A (ko) | 2011-05-23 |
US20110211027A1 (en) | 2011-09-01 |
TW201022039A (en) | 2010-06-16 |
EP2338611A1 (en) | 2011-06-29 |
JPWO2010044407A1 (ja) | 2012-03-15 |
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