JP5065464B2 - 液体吐出ヘッドおよび液体吐出ヘッドの製造方法 - Google Patents
液体吐出ヘッドおよび液体吐出ヘッドの製造方法 Download PDFInfo
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Description
前記液体吐出ヘッド用基板の前記一方の面側に、前記液室に露出する第1の部分と外気に露出する第2の部分とを有する放熱用の放熱部材が、前記複数の液室にそれぞれ対応するように複数設けられており、
複数の前記放熱部材のうち、前記素子列の中央部付近に対応する第1の前記放熱部材の前記第2の部分の表面積は、前記第1の放熱部材よりも前記素子列の端部に近い側に対応する第2の前記放熱部材の前記第2の部分の表面積より、大きいことを特徴とする。
図1(a)は、本発明に係る液体吐出ヘッドを搭載可能な液体吐出装置を示す概略図である。
図1(b)は、図1(a)のような液体吐出装置に搭載可能なヘッドユニット40の一例の斜視図である。液体吐出ヘッド41(以下、ヘッドとも称する)はフレキシブルフィルム配線基板43により、液体吐出装置と接続するコンタクトパッド44に導通している。また、ヘッド41は、インクタンク42と接合されることで一体化されヘッドユニット40を構成している。ここで例として示しているヘッドユニット40は、インクタンク42とヘッド41とが一体化したものであるが、インクタンクを分離できる分離型とすることも出来る。
図2(a)は、本発明を用いることができる液体吐出ヘッド41の上面図である。図2(b)は、図2(a)のX領域を拡大した斜視図である。図2(c)は、図2(a)のA−A’に沿って垂直に、液体吐出ヘッド41を切断した場合の切断面の状態を示した断面模式図である。
このようなエネルギー発生素子8を複数配列させた素子列を有する液体吐出ヘッド41で、高速印字を行うための記録動作を連続で行うと、素子列の中央部付近は周囲に位置する非発熱領域の面積が、端部付近に比べて少ないため熱が逃げにくい状態となっている。具体的には、素子列の端部付近で発生した熱は基体1の端部へ逃げることができるのに対し、中央部付近は供給口2などが設けられており、基体1を通じて熱が逃げにくい状態であるといえる。そのため、液体吐出ヘッド41内で温度差が生じることになる。
2 供給口
4 放熱部材
5 液室
6 吐出口部材
7 吐出口
8 エネルギー発生素子
41 液体吐出ヘッド
Claims (8)
- 液体を吐出するために利用される熱エネルギーを発生するエネルギー発生素子が複数配列されてなる素子列を一方の面側に有する液体吐出ヘッド用基板と、
複数の前記エネルギー発生素子にそれぞれ対応して設けられ、液体を貯留するための複数の液室の壁と、該複数の液室にそれぞれ連通し、前記エネルギー発生素子が発生する熱エネルギーにより液体を吐出するための複数の吐出口と、を有し、前記液体吐出ヘッド用基板と接することで前記液室を形成する吐出口部材と、
を有する液体吐出ヘッドであって、
前記液体吐出ヘッド用基板の前記一方の面側に、前記液室に露出する第1の部分と外気に露出する第2の部分とを有する放熱用の放熱部材が、前記複数の液室にそれぞれ対応するように複数設けられており、
複数の前記放熱部材のうち、前記素子列の中央部付近に対応する第1の前記放熱部材の前記第2の部分の表面積は、
前記第1の放熱部材よりも前記素子列の端部に近い側に対応する第2の前記放熱部材の前記第2の部分の表面積より、大きいことを特徴とする液体吐出ヘッド。 - 前記放熱部材を構成する材料の熱伝導率は、前記吐出口部材を構成する材料の熱伝導率と前記一方の面を構成する材料の熱伝導率とのいずれよりも高いことを特徴とする請求項1に記載の液体吐出ヘッド。
- 前記放熱部材は、金、銅、銀のいずれかを主成分とする材料で設けられていることを特徴とする請求項1または請求項2に記載の液体吐出ヘッド。
- 前記素子列の端部から前記素子列の中央部にかけて、対応する前記放熱部材の前記第2の部分の其々の表面積は段階的に大きくなっていることを特徴とする請求項1乃至請求項3のいずれか1項に記載の液体吐出ヘッド。
- 前記液体吐出ヘッド用基板の前記一方の面には、前記エネルギー発生素子を駆動するために、前記液体吐出ヘッド用基板の外部との電気接続に用いられる端子が、前記放熱部材と同じ材料で設けられていることを特徴とする請求項1乃至請求項4のいずれか1項に記載の液体吐出ヘッド。
- 複数の前記第1の部分の其々の表面積は、実質的に等しいことを特徴とする請求項1乃至請求項5のいずれか1項に記載の液体吐出ヘッド。
- 請求項1に記載の液体吐出ヘッドの製造方法であって、
複数の前記エネルギー発生素子を一方の面側に有し、前記液体吐出ヘッド用基板となる基体の前記一方の面側に、めっき法を用いて前記放熱部材となる複数の金属部材を設ける工程と、
前記吐出口部材となる吐出口部材用材料を複数の前記金属部材を被覆するように設ける工程と、
前記吐出口部材用材料の一部を除去して前記吐出口部材を形成する工程と、
を有することを特徴とする液体吐出ヘッドの製造方法。 - 複数の前記金属部材を設ける工程において、前記エネルギー発生素子を駆動するための接続に用いられる端子を、めっき法を用いて前記放熱部材と一括して形成することを特徴とする
請求項7に記載の液体吐出ヘッドの製造方法。
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JP2010219482A JP5065464B2 (ja) | 2010-09-29 | 2010-09-29 | 液体吐出ヘッドおよび液体吐出ヘッドの製造方法 |
US13/233,875 US8434850B2 (en) | 2010-09-29 | 2011-09-15 | Liquid discharge head and manufacturing method of the same |
CN201110303044.8A CN102431302B (zh) | 2010-09-29 | 2011-09-29 | 液体排出头及其制造方法 |
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JP2000043269A (ja) * | 1998-07-31 | 2000-02-15 | Ricoh Co Ltd | 液体噴射記録ヘッド及び方法 |
JP3592172B2 (ja) * | 1999-01-27 | 2004-11-24 | キヤノン株式会社 | インクジェット記録ヘッドの製造方法、該製法によって製造されたインクジェット記録ヘッド及び該インクジェット記録ヘッドを搭載したインクジェット記録装置 |
US6065823A (en) * | 1999-04-16 | 2000-05-23 | Hewlett-Packard Company | Heat spreader for ink-jet printhead |
JP3327292B2 (ja) | 2001-05-31 | 2002-09-24 | 富士ゼロックス株式会社 | インクジェット記録ヘッド |
JP2005271146A (ja) * | 2004-03-25 | 2005-10-06 | Yaskawa Electric Corp | 2軸直交型ロボット関節装置 |
JP2005280179A (ja) | 2004-03-30 | 2005-10-13 | Canon Inc | インクジェットヘッド用基板およびインクジェットヘッド |
TWI289511B (en) * | 2004-11-22 | 2007-11-11 | Canon Kk | Method of manufacturing liquid discharge head, and liquid discharge head |
JP2007283629A (ja) * | 2006-04-17 | 2007-11-01 | Canon Inc | インクジェットヘッドの製造方法 |
US7971964B2 (en) * | 2006-12-22 | 2011-07-05 | Canon Kabushiki Kaisha | Liquid discharge head and method for manufacturing the same |
-
2010
- 2010-09-29 JP JP2010219482A patent/JP5065464B2/ja not_active Expired - Fee Related
-
2011
- 2011-09-15 US US13/233,875 patent/US8434850B2/en not_active Expired - Fee Related
- 2011-09-29 CN CN201110303044.8A patent/CN102431302B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JP2012071536A (ja) | 2012-04-12 |
CN102431302B (zh) | 2014-07-23 |
CN102431302A (zh) | 2012-05-02 |
US8434850B2 (en) | 2013-05-07 |
US20120075386A1 (en) | 2012-03-29 |
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