JP6929029B2 - 液体吐出ヘッドの製造方法、及び液体吐出ヘッド - Google Patents
液体吐出ヘッドの製造方法、及び液体吐出ヘッド Download PDFInfo
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Description
本実施形態の液体吐出ヘッド14の構成について説明する。図1は第1の実施形態の液体吐出ヘッド14を示す図である。図1(a)は図13に示す領域Aを拡大して示す上面図であり、図1(b)は図1(a)のB−B線における断面の切断面のみを示す図であり、図1(c)は図1(b)の基板10の表面の供給口11の近傍を拡大して示す図である。
図9は第2の実施形態の液体吐出ヘッドを示す図である。図9(a)は図13に示す領域Aを拡大して示す上面図であり、図9(b)は図9(a)のD−D線における断面の切断面のみを示す図である。
図10は第3の実施形態の液体吐出ヘッドを示す図である。図10(a)は図13に示す領域Aを拡大して示す上面図であり、図10(b)は図10(a)のE−E線における断面の切断面のみを示す図である。
11 供給口
12 熱作用部(圧力発生部)
14 液体吐出ヘッド
20 流路形成部材
21 吐出口
22 発泡室(圧力室)
23 流路
102 樹脂層
210 蓄熱層(被覆層)
211 端部被覆部
230 保護層(被覆層)
231 端部被覆部
310 犠牲層
320 流路型材
Claims (11)
- 基体と、前記基体の表面の側に設けられ、液体を吐出するための圧力を発生する圧力発生部と、前記圧力発生部に液体を供給するための供給口と、を備えた液体吐出ヘッド用基板と、前記供給口から供給された液体を前記圧力発生部に流す流路を形成する流路形成部材と、を有する液体吐出ヘッドの製造方法において、
前記基体の前記表面に犠牲層を設ける工程と、
前記基体の前記表面の側に、前記犠牲層の端部を覆う端部被覆部を備え、前記犠牲層を覆う被覆層を設ける工程と、
前記被覆層の表面に配される第1の部分と、前記端部被覆部を覆う、前記第1の部分とは別の第2の部分と、を備えるように樹脂層を設ける工程と、
前記被覆層の前記表面のうちの前記第1の部分が配された領域とは別の領域と、前記第2の部分の表面と、に流路型材を設ける工程と、
前記流路型材の表面および前記第1の部分の表面に前記流路形成部材を設ける工程と、
前記端部被覆部が前記第2の部分で覆われた状態で、前記基体の裏面から前記基体をエッチングし、前記犠牲層を除去する工程と、
前記流路型材を除去し、前記圧力発生部をそれぞれ内部に有する複数の圧力室および前記圧力室のそれぞれに連通する複数の前記流路であって、前記流路形成部材によって形成された壁で仕切られる前記複数の圧力室および前記複数の流路と、前記複数の流路と前記供給口とを連通する共通液室と、を形成する工程と、
を有し、
前記樹脂層の前記被覆層との密着力は、前記流路型材の前記被覆層との密着力よりも高く、
前記樹脂層を設ける工程において、前記壁と前記液体吐出ヘッド用基板の表面との間の前記第1の部分から前記壁の延びる方向に沿って延在し、前記第2の部分と繋がる前記樹脂層の第3の部分が、前記共通液室の前記流路と連通する部分となる位置を避けて前記共通液室に面することになるように、前記第3の部分を設け、
前記液体吐出ヘッド用基板の前記表面に沿い、且つ前記延びる方向に直交する方向において、前記第3の部分の長さは、前記壁と前記液体吐出ヘッド用基板の前記表面との間の前記第1の部分の最大の長さよりも短いことを特徴とする液体吐出ヘッドの製造方法。 - 前記樹脂層を設ける工程において、前記基体の前記表面に直交する方向から見た前記犠牲層の面積よりも小さい面積を有する開口を前記樹脂層に形成し、前記被覆層の、前記犠牲層を覆う部分の表面を前記開口から露出させる、請求項1に記載の液体吐出ヘッドの製造方法。
- 前記樹脂層を設ける工程において、前記圧力室となる位置に前記樹脂層を設けない、請求項1または請求項2に記載の液体吐出ヘッドの製造方法。
- 前記樹脂層を設ける工程において、ポリエーテルアミドからなる前記樹脂層を設ける、請求項1乃至請求項3のいずれか一項に記載の液体吐出ヘッドの製造方法。
- 前記樹脂層を設ける工程において、前記被覆層よりも厚い前記樹脂層を設ける、請求項1乃至請求項4のいずれか一項に記載の液体吐出ヘッドの製造方法。
- 前記被覆層を設ける工程において、シリコン化合物を含む前記被覆層を設ける、請求項1乃至請求項5のいずれか一項に記載の液体吐出ヘッドの製造方法。
- 前記基体に前記圧力発生部を構成するための圧力発生素子を設ける工程を更に含み、
前記被覆層を設ける工程において、前記圧力発生素子を覆う層を含む前記被覆層を設ける、請求項1乃至請求項6のいずれか一項に記載の液体吐出ヘッドの製造方法。 - 基体と、前記基体の表面の側に設けられ、液体を吐出するための圧力を発生する圧力発生部と、前記基体の前記表面の側に設けられた被覆層と、前記基体と前記被覆層とを貫通し、前記圧力発生部に液体を供給するための供給口と、を備えた液体吐出ヘッド用基板と、
前記基体の前記表面の側に設けられ、前記供給口から供給された液体を前記圧力発生部に流す流路を形成する流路形成部材と、
前記液体吐出ヘッド用基板の表面と前記流路形成部材との間に設けられた第1の部分と、前記液体吐出ヘッド用基板の前記被覆層が設けられた表面に備えられた前記供給口の開口縁部を跨るように設けられた第2の部分と、を備える樹脂層と、
を有する液体吐出ヘッドにおいて、
前記液体吐出ヘッドは、前記圧力発生部をそれぞれ内部に有する複数の圧力室および前記圧力室のそれぞれに連通する複数の前記流路であって、前記流路形成部材によって形成された壁で仕切られる前記複数の圧力室および前記複数の流路と、前記複数の流路と前記供給口とを連通する共通液室と、を有し、
前記第2の部分は、前記開口縁部から前記供給口の内側に向かって、前記液体吐出ヘッド用基板の前記表面に沿う部分と、前記部分よりも前記流路形成部材の側に近づく段差部と、を備え
前記樹脂層は、前記壁と前記液体吐出ヘッド用基板の前記表面との間の前記第1の部分から前記壁の延びる方向に沿って延在し、前記第2の部分と繋がる第3の部分であって、前記共通液室の前記流路と連通する部分となる位置を避けて前記共通液室に面する前記第3の部分を備え、
前記液体吐出ヘッド用基板の前記表面に沿い、且つ前記延びる方向に直交する方向において、前記第3の部分の長さは、前記壁と前記液体吐出ヘッド用基板の前記表面との間の前記第1の部分の最大の長さよりも短いことを特徴とする液体吐出ヘッド。 - 前記樹脂層はポリエーテルアミドからなる、請求項8に記載の液体吐出ヘッド。
- 前記樹脂層は前記被覆層よりも厚い、請求項8または請求項9に記載の液体吐出ヘッド。
- 前記圧力室となる位置に前記樹脂層が設けられていない、請求項8乃至請求項10のいずれか一項に記載の液体吐出ヘッド。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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JP2016150418A JP6929029B2 (ja) | 2016-07-29 | 2016-07-29 | 液体吐出ヘッドの製造方法、及び液体吐出ヘッド |
US15/659,506 US10239317B2 (en) | 2016-07-29 | 2017-07-25 | Method for manufacturing liquid discharge head, liquid discharge head, and method for manufacturing liquid discharge head substrate |
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