JP2010199339A - 液体噴射ヘッド、液体噴射装置及びアクチュエーター装置 - Google Patents
液体噴射ヘッド、液体噴射装置及びアクチュエーター装置 Download PDFInfo
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- 239000007788 liquid Substances 0.000 title claims abstract description 44
- 239000000758 substrate Substances 0.000 claims abstract description 52
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 25
- 239000001301 oxygen Substances 0.000 claims description 25
- 229910052760 oxygen Inorganic materials 0.000 claims description 25
- 150000002500 ions Chemical class 0.000 claims description 16
- 229910021645 metal ion Inorganic materials 0.000 claims description 16
- 229910052719 titanium Inorganic materials 0.000 claims description 14
- 229910052726 zirconium Inorganic materials 0.000 claims description 14
- 229910052745 lead Inorganic materials 0.000 claims description 6
- 230000007547 defect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 13
- 230000005684 electric field Effects 0.000 description 24
- 239000012535 impurity Substances 0.000 description 24
- 238000004519 manufacturing process Methods 0.000 description 21
- 239000002243 precursor Substances 0.000 description 21
- 239000000243 solution Substances 0.000 description 16
- 230000001681 protective effect Effects 0.000 description 11
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 10
- 239000000463 material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000012212 insulator Substances 0.000 description 7
- 239000013078 crystal Substances 0.000 description 6
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 6
- 239000002202 Polyethylene glycol Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229920001223 polyethylene glycol Polymers 0.000 description 5
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- 239000010703 silicon Substances 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000002950 deficient Effects 0.000 description 4
- 238000005238 degreasing Methods 0.000 description 4
- -1 iron ions Chemical class 0.000 description 4
- 229910052746 lanthanum Inorganic materials 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000000059 patterning Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 150000002902 organometallic compounds Chemical class 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000000992 sputter etching Methods 0.000 description 2
- 238000000018 DNA microarray Methods 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910000480 nickel oxide Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- 229910000484 niobium oxide Inorganic materials 0.000 description 1
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- SYQBFIAQOQZEGI-UHFFFAOYSA-N osmium atom Chemical compound [Os] SYQBFIAQOQZEGI-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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
- B41J2/14233—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
- 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
- B41J2/16—Production of nozzles
- B41J2/1607—Production of print heads with piezoelectric elements
- B41J2/161—Production 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
- 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
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1626—Manufacturing processes etching
- B41J2/1628—Manufacturing processes etching dry etching
-
- 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
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1626—Manufacturing processes etching
- B41J2/1629—Manufacturing processes etching wet etching
-
- 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
- B41J2/16—Production of nozzles
- B41J2/1621—Manufacturing processes
- B41J2/1631—Manufacturing processes photolithography
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
- H10N30/07—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base
- H10N30/074—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base by depositing piezoelectric or electrostrictive layers, e.g. aerosol or screen printing
- H10N30/077—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base by depositing piezoelectric or electrostrictive layers, e.g. aerosol or screen printing by liquid phase deposition
- H10N30/078—Forming of piezoelectric or electrostrictive parts or bodies on an electrical element or another base by depositing piezoelectric or electrostrictive layers, e.g. aerosol or screen printing by liquid phase deposition by sol-gel deposition
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/20—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators
- H10N30/204—Piezoelectric or electrostrictive devices with electrical input and mechanical output, e.g. functioning as actuators or vibrators using bending displacement, e.g. unimorph, bimorph or multimorph cantilever or membrane benders
- H10N30/2047—Membrane type
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/80—Constructional details
- H10N30/85—Piezoelectric or electrostrictive active materials
- H10N30/853—Ceramic compositions
- H10N30/8548—Lead-based oxides
- H10N30/8554—Lead-zirconium titanate [PZT] based
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/704—Piezoelectric or electrostrictive devices based on piezoelectric or electrostrictive films or coatings
- H10N30/706—Piezoelectric or electrostrictive devices based on piezoelectric or electrostrictive films or coatings characterised by the underlying bases, e.g. substrates
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Ceramic Engineering (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
【解決手段】 液体噴射ヘッドは、液体を噴射するノズル開口21に連通する圧力発生室が設けられた流路形成基板と、該流路形成基板の一方面側に前記圧力発生室に圧力変化を生じさせる圧電素子300とを具備し、前記圧電素子は、陰極及び陽極からなる一対の電極と、該一対の電極に挟まれて変位可能に設けられた圧電体層70とを備え、前記圧電体層の前記陰極電極の近傍には負に帯電した負帯電層71が形成されると共に、前記陽極電極の近傍には正に帯電した正帯電層72が形成されている。
【選択図】図2
Description
(実施形態1)
図1は、本発明の実施形態1に係る液体噴射ヘッドの一例であるインクジェット式記録ヘッドの概略構成を示す分解斜視図であり、図2は、図1の平面図及びそのA−A′断面図である。
以上、本発明の一実施形態を説明したが、本発明の基本的構成は上述したものに限定されるものではない。例えば、上述した実施形態1では、負帯電層71を上電極膜80側に設けるようにしたが、陰極側に設けられていれば、これに限定されない。例えば、下電極膜60側を陰極とし、上電極膜80側を陽極とする場合には、負帯電層71を圧電体層70の下電極膜60側に設け、かつ、正帯電層72を上電極膜80側に設けるようにしてもよい。また、このように上述した実施形態とは積層方向が逆になるように形成する場合、例えば、基板上に上電極膜、正帯電層、圧電体層本体、負帯電層及び下電極膜からなる圧電素子を順次積層形成した後、流路形成基板10上に圧電素子を転写することで形成してもよい。
Claims (10)
- 液体を噴射するノズル開口に連通する圧力発生室が設けられた流路形成基板と、
該流路形成基板の一方面側に前記圧力発生室に圧力変化を生じさせる圧電素子とを具備し、
前記圧電素子は、陰極及び陽極からなる一対の電極と、該一対の電極に挟まれて変位可能に設けられた圧電体層とを備え、
前記圧電体層の前記陰極電極の近傍には負に帯電した領域が形成されると共に、前記圧電体層の前記陽極電極の近傍には正に帯電した領域が形成されていることを特徴とする液体噴射ヘッド。 - 前記圧電体層は、酸化物からなり、前記負に帯電した領域が、前記圧電体層の他の領域よりも酸素欠陥が多いことを特徴とする請求項1に記載の液体噴射ヘッド。
- 前記圧電体層は、Pbを少なくとも含んでおり、前記負に帯電した領域が、前記圧電体層の他の領域よりも二価のPbイオンが多いことを特徴とする請求項1記載の液体噴射ヘッド。
- 前記圧電体層は、Pbを少なくとも含んでおり、前記負に帯電した領域が、前記圧電体層中の二価のPbイオンを三価以上の金属イオンに置換したものからなることを特徴とする請求項1記載の液体噴射ヘッド。
- 前記圧電体層は、酸化物からなり、前記正に帯電した領域が、前記圧電体層の他の領域よりも酸素が多い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噴射ヘッド。
- 前記圧電体層は、Pbを少なくとも含んでおり、前記正に帯電した領域が、前記圧電体層の他の領域よりも二価のPbイオンが少ない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噴射ヘッド。
- 前記圧電体層は、Pb、Zr及びTiを少なくとも含んでおり、前記正に帯電した領域が、前記圧電体層中のZr及びTiから選ばれた少なくとも一種を三価以下の金属イオンに置換したものからな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噴射ヘッド。
- 前記圧電体層は、Pb、Zr及びTiを少なくとも含んでおり、前記正に帯電した領域が、前記圧電体層の他の領域よりもTiが多い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噴射ヘッド。
- 請求項1〜8のいずれか一項に記載の液体噴射ヘッドを備えたことを特徴とする液体噴射装置。
- 基板と、陰極及び陽極からなる一対の電極と、該一対の電極に挟まれて変位可能に設けられた圧電体層とを備え、
前記圧電体層の前記陰極電極の近傍には負に帯電した領域が形成されると共に、前記圧電体層の前記陽極電極の近傍には正に帯電した領域が形成されていることを特徴とするアクチュエーター装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2009043216A JP5435206B2 (ja) | 2009-02-25 | 2009-02-25 | 液体噴射ヘッド及び液体噴射装置 |
US12/706,377 US20100214372A1 (en) | 2009-02-25 | 2010-02-16 | Liquid ejecting head, liquid ejecting apparatus, and actuator unit |
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JP2009043216A JP5435206B2 (ja) | 2009-02-25 | 2009-02-25 | 液体噴射ヘッド及び液体噴射装置 |
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JP2010199339A true JP2010199339A (ja) | 2010-09-09 |
JP5435206B2 JP5435206B2 (ja) | 2014-03-05 |
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JP5660274B2 (ja) * | 2010-01-05 | 2015-01-28 | セイコーエプソン株式会社 | 液体噴射ヘッドの製造方法、圧電素子の製造方法、液体噴射ヘッド、液体噴射装置及び圧電素子 |
JP5660288B2 (ja) | 2010-01-05 | 2015-01-28 | セイコーエプソン株式会社 | 液体噴射ヘッド、液体噴射装置及び圧電素子並びに液体噴射ヘッドの製造方法 |
JP5641185B2 (ja) | 2010-01-05 | 2014-12-17 | 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並びに圧電素子 |
JP5556182B2 (ja) | 2010-01-05 | 2014-07-23 | 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並びに圧電素子 |
JP2011211143A (ja) * | 2010-03-12 | 2011-10-20 | Seiko Epson Corp | 液体噴射ヘッド及び液体噴射装置並びに圧電素子 |
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JPH08195328A (ja) * | 1995-01-12 | 1996-07-30 | Toshiba Corp | 高誘電体膜キャパシタ及びその製造方法 |
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JP2003243741A (ja) * | 2002-02-19 | 2003-08-29 | Seiko Epson Corp | 圧電アクチュエータ、その駆動方法、圧電アクチュエータの製造方法および液滴噴射装置 |
JP2004296851A (ja) * | 2003-03-27 | 2004-10-21 | Seiko Epson Corp | 強誘電体層、強誘電体層の製造方法、強誘電体キャパシタならびに強誘電体メモリ |
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US20100214372A1 (en) | 2010-08-26 |
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