JP5690476B2 - 液体噴射ヘッドの製造方法、液体噴射ヘッド及び液体噴射装置 - Google Patents
液体噴射ヘッドの製造方法、液体噴射ヘッド及び液体噴射装置 Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Manufacturing & Machinery (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Description
かかる態様では、常温よりも高い温度で第1基板と第2基板とを接合した後、これらを常温に戻すと、第2基板は、第1熱膨張係数が第2熱膨張係数よりも大きいので、第1の方向に、より大きく収縮しようとする。さらに、第2基板の第1熱膨張係数が第1基板の熱膨張係数よりも大きいため、第2基板が収縮する量は、第1基板の収縮量よりも大きくなる。したがって、第2基板が第1の方向に圧縮する方向の応力を第1基板に付与して、圧電素子に掛かる第1基板の基準方向の引張応力を低減することができる。これにより、第1基板の基準方向の引張応力により圧電素子が破壊されることを抑止することができる。
ここで、前記第1の工程では、前記第1基板として流路形成基板に、前記圧電素子を前記直交方向に複数並設すると共にさらに前記第1基板に前記圧電素子に対応して複数の圧力発生室を前記直交方向に並設する工程を有し、前記第2の工程では、前記第2基板として、前記第2の方向に複数のノズル開口が形成されたノズルプレートであって該ノズルプレートの前記第2熱膨張係数と前記流路形成基板の熱膨張係数との差の絶対値が前記第1熱膨張係数と前記流路形成基板の熱膨張係数との差の絶対値よりも小さいものを用いることが好ましい。これによれば、第2基板の第2熱膨張係数と第1基板の熱膨張係数との差の絶対値を、第2基板の第1熱膨張係数と第1基板の熱膨張係数との差の絶対値よりも小さくしたことで、ノズル開口が並設された第2の方向への第2基板の反りを相対的に小さくすることができる。これにより、ノズル開口から吐出される液体の着弾位置のズレを第1の方向に限定することができ、液体の吐出タイミングの調整により着弾位置を容易に補正することができる。
さらに本発明は、上記態様の製造方法により製造されたことを特徴とする液体噴射ヘッドにある。かかる態様では、圧電素子が破壊されることを抑止して耐久性及び信頼性が向上した液体噴射ヘッドが提供される。
さらに本発明は、上記態様の液体噴射ヘッドを具備することを特徴とする液体噴射装置にある。かかる態様では、耐久性及び信頼性が向上した液体噴射装置を提供することができる。
また、上記目的を達成するための本発明の他の態様は、第1基板上に基準方向の幅が当該基準方向と直交する直交方向の幅よりも長い圧電素子を形成する第1の工程と、前記第1基板の前記圧電素子とは反対面に常温よりも高い温度で第2基板を接合する第2の工程とを具備し、前記第2の工程では、前記第2基板として、前記第1基板との接合面で第1の方向における第1熱膨張係数が該第1の方向に直交する第2の方向における第2熱膨張係数よりも大きく、且つ、当該第1熱膨張係数が前記第1基板の熱膨張係数よりも大きいものを用いて、前記第2基板の前記第1の方向を前記基準方向に合わせて接合することを特徴とする液体噴射ヘッドの製造方法にある。
図1は、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について説明したが、勿論、本発明はこのような実施形態に限定されるものではない。
Claims (4)
- シリコン単結晶基板からなる第1基板上に、基準方向の幅が当該基準方向と直交する直交方向の幅よりも長いたわみ振動モードの圧電素子を結晶化して形成する第1の工程と、
前記第1基板の前記圧電素子とは反対面に常温よりも高い温度で第2基板を接合する第2の工程とを具備し、
前記第2の工程では、前記第2基板として、前記第1基板との接合面で第1の方向における第1熱膨張係数が該第1の方向に直交する第2の方向における第2熱膨張係数よりも大きく、且つ、当該第1熱膨張係数が前記第1基板の熱膨張係数よりも大きいものを用いて、前記第2基板の前記第1の方向を前記基準方向に合わせて接合することを特徴とする液体噴射ヘッドの製造方法。 - 請求項1に記載する液体噴射ヘッドの製造方法において、
前記第1の工程では、前記第1基板として流路形成基板に、前記圧電素子を前記直交方向に複数並設すると共にさらに前記第1基板に前記圧電素子に対応して複数の圧力発生室を前記直交方向に並設する工程を有し、
前記第2の工程では、前記第2基板として、前記第2の方向に複数のノズル開口が形成されたノズルプレートであって該ノズルプレートの前記第2熱膨張係数と前記流路形成基板の熱膨張係数との差の絶対値が前記第1熱膨張係数と前記流路形成基板の熱膨張係数との差の絶対値よりも小さいものを用いることを特徴とする液体噴射ヘッドの製造方法。 - 請求項1又は請求項2に記載する液体噴射ヘッドの製造方法により製造されたことを特徴とする液体噴射ヘッド。
- 請求項3に記載する液体噴射ヘッドを備えることを特徴とする液体噴射装置。
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JP2009077864A JP5690476B2 (ja) | 2009-03-26 | 2009-03-26 | 液体噴射ヘッドの製造方法、液体噴射ヘッド及び液体噴射装置 |
US12/728,907 US8474139B2 (en) | 2009-03-26 | 2010-03-22 | Method of manufacturing a liquid ejecting head |
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JPH05286142A (ja) * | 1992-04-13 | 1993-11-02 | Fujitsu Ltd | インクジェットヘッド及びその製造方法 |
JP3493844B2 (ja) * | 1994-11-15 | 2004-02-03 | 住友電気工業株式会社 | 半導体基板材料とその製造方法及び該基板を用いた半導体装置 |
JP3677771B2 (ja) * | 1999-10-14 | 2005-08-03 | セイコーエプソン株式会社 | インクジェット記録ヘッド及びインクジェットプリンタ |
JP5019247B2 (ja) | 2000-11-24 | 2012-09-05 | Tdk株式会社 | 電子デバイス用基板 |
JP2004268397A (ja) * | 2003-03-07 | 2004-09-30 | Seiko Epson Corp | 液体噴射ヘッドの製造方法及び接合装置 |
US7874649B2 (en) * | 2006-07-14 | 2011-01-25 | Canon Kabushiki Kaisha | Piezoelectric element, ink jet head and producing method for piezoelectric element |
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2009
- 2009-03-26 JP JP2009077864A patent/JP5690476B2/ja active Active
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2010
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JP2010228275A (ja) | 2010-10-14 |
US20100245492A1 (en) | 2010-09-30 |
US8474139B2 (en) | 2013-07-02 |
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