JP2006212864A

JP2006212864A - Inkjet recording head

Info

Publication number: JP2006212864A
Application number: JP2005026416A
Authority: JP
Inventors: Ryoichiro Kurobe; 亮一郎黒部; Minoru Nozawa; 実野澤
Original assignee: Canon Inc
Current assignee: Canon Inc
Priority date: 2005-02-02
Filing date: 2005-02-02
Publication date: 2006-08-17

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inkjet recording head having an excellent capping precision and high structural reliability in which the precision for capping an ink ejection port and its surrounding in the recording element substrate of the recording head for protecting the ink ejection face, when ink suction recovery is conducted or ink is left, can be improved from a conventional gap of approximately ±1 mm to approximately a total gap of 0.56 mm which is obtained by adding a gap of an engaging section to a gap of 0.36 mm including only the mounting precision of the recording element substrate and an ink supply member 2 and the precision within the cap. <P>SOLUTION: In the recording device comprising a cap covering the recording element substrate of the recording head and its surrounding, an electric wiring substrate which electrically connects the recording device and the recording element substrate is provided, the electric wiring substrate is bonded and fixed to the same face as the face in the ink supply member having the recording element substrate fixed to it, a groove part penetrating through the electric wiring substrate and the ink supply member is provided at least at one position, and a projecting part to be engaged with the groove part is provided in the cap. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、インクを吐出してインク液滴を形成し、記録を行うインクジェット記録装置及びインクジェット記録ヘッドに関する。 The present invention relates to an inkjet recording apparatus and an inkjet recording head that perform recording by ejecting ink to form ink droplets.

今日一般的に用いられているインクジェット記録方式のインク吐出方法にはインク滴を吐出するために用いられる吐出エネルギー発生素子として電気熱変換素子（ヒーター）を利用する方法と、圧電素子（ピエゾ）を利用する方法があり、いずれも電気的な信号によってインク滴の吐出を制御するものである。 Ink jet recording methods commonly used today include a method of using an electrothermal conversion element (heater) as a discharge energy generating element used for discharging ink droplets, and a piezoelectric element (piezo). There are methods to be used, and all of them control ejection of ink droplets by an electrical signal.

例えば、電気熱変換素子を用いるインク滴吐出方法の原理は、電気熱変換素子に電気信号を与えることにより、電気熱変換素子近傍のインクを瞬時にして沸騰させ、そのときのインクの相変化により生じる急激な気泡の成長によってインク滴を高速に吐出させるものである。 For example, the principle of the ink droplet ejection method using an electrothermal conversion element is that an electric signal is given to the electrothermal conversion element to instantaneously boil ink near the electrothermal conversion element, and the phase change of the ink at that time Ink droplets are ejected at high speed by the rapid bubble growth that occurs.

一方、圧電素子を用いるインク滴の吐出方法の原理は、圧電素子に電気信号を与えることにより、圧電素子が変位しこの変位時の圧力によってインク滴を吐出させるものである。 On the other hand, the principle of the ink droplet ejection method using a piezoelectric element is that an electric signal is given to the piezoelectric element, whereby the piezoelectric element is displaced and the ink droplet is ejected by the pressure at the time of the displacement.

一般的なインクジェットプリンターは図１３のように本体（２７）、給送部（２８）、排出トレイ（２９）から構成され、内部には図１４のように記録装置に送られる記録シート上に記録を行うインクジェット記録ヘッドカートリッジがキャリッジ（３０）に搭載される。このインクジェット記録ヘッドカートリッジは図９のようにインクタンク（１６）と記録ヘッド（１７）から構成され、インクタンクは着脱可能に記録ヘッドに固定装着される。 A general ink jet printer is composed of a main body (27), a feeding section (28), and a discharge tray (29) as shown in FIG. 13, and records on a recording sheet sent to a recording device as shown in FIG. An ink jet recording head cartridge is mounted on the carriage (30). As shown in FIG. 9, the ink jet recording head cartridge includes an ink tank (16) and a recording head (17), and the ink tank is detachably fixed to the recording head.

また、例えばインク吐出エネルギー発生素子として電気熱変換素子（ヒーター）を利用するものでは、記録ヘッドは図１０のように発熱抵抗体を有する電気熱変換素子によってインクを加熱し、膜沸騰作用でインク滴を吐出させる記録素子基板（１）、（２）と、前記記録素子基板に装置本体からの駆動信号等を印加する電気配線基板（３）からなる記録素子ユニット（７）と、インクタンクを保持するタンクホルダー（１０）と、記録素子ユニットにインクを供給するための流路を形成するインク供給部材１（８）と、インク供給部材２（９）と、から構成されており、インク供給部材は例えば４色のインクタンクから記録素子ユニットにインクを供給する４つの流路を形成している。また、記録ヘッドの記録素子基板とその周囲には本体から図１５のようなキャップが圧接するようになっており、これによりインクの吸引回復、また放置時のインク吐出面の保護を行っている。 For example, in the case of using an electrothermal conversion element (heater) as an ink discharge energy generating element, the recording head heats the ink by an electrothermal conversion element having a heating resistor as shown in FIG. A recording element unit (7) comprising a recording element substrate (1), (2) for discharging droplets, an electric wiring substrate (3) for applying a drive signal or the like from the apparatus main body to the recording element substrate, and an ink tank. A tank holder (10) to be held, an ink supply member 1 (8) that forms a flow path for supplying ink to the recording element unit, and an ink supply member 2 (9) are provided. The member forms, for example, four flow paths for supplying ink from four color ink tanks to the recording element unit. Further, a cap as shown in FIG. 15 is pressed from the main body to the recording element substrate of the recording head and its periphery, thereby recovering ink suction and protecting the ink ejection surface when left standing. .

又、別の従来例としては、特許文献１をあげることが出来る。
特開平０６−３３６０１９号公報 As another conventional example, Patent Document 1 can be cited.
Japanese Patent Laid-Open No. 06-336019

しかしながら上記の従来例のうち、記録装置側のキャップの記録素子基板に対する位置決め精度に関しては、その問題が未だ十分に解決されていない。このキャッピングは現在記録ヘッドに関し、記録ヘッド内やキャリッジ、キャップユニット内の精度も加味しており、図１６の表の精度内訳からトータルで現状約±１［ｍｍ］の精度となっている。また精度が出ていない場合、キャッピング領域（フェイス面）が大きくなることによるコストアップ、さらに多穴チップを持つ双方向ヘッドを実現する場合、一体キャップで記録素子基板面をキャッピングし、回復吸引するのが困難な点などの課題がある。 However, among the above-described conventional examples, the problem with respect to the positioning accuracy of the cap on the recording apparatus side with respect to the recording element substrate has not been sufficiently solved. This capping relates to the current recording head, taking into account the accuracy in the recording head, carriage and cap unit, and the total accuracy is about ± 1 [mm] from the breakdown of accuracy in the table of FIG. In addition, when accuracy is not achieved, the cost increases due to an increase in the capping area (face surface). Further, when realizing a bidirectional head having a multi-hole chip, the recording element substrate surface is capped with an integrated cap, and recovery suction is performed. There are problems such as difficult points.

本発明は上記課題を達成するため、インクジェット記録ヘッドのキャッピングに関する部分を次のように構成することを特徴とする。すなわち、インクジェット記録ヘッドにキャッピング面があり、かつ、該キャッピング面は凹部をもち、かつ、該凹部はインクジェット記録装置に具備したキャップユニットの凸部により嵌合位置決めされることを特徴としている。 In order to achieve the above object, the present invention is characterized in that the portion related to capping of an inkjet recording head is configured as follows. That is, the ink jet recording head has a capping surface, the capping surface has a concave portion, and the concave portion is fitted and positioned by a convex portion of a cap unit provided in the ink jet recording apparatus.

インクの吸引回復時あるいは放置時のインク吐出面の保護として記録ヘッドの記録素子基板におけるインクの吐出口とその周辺をキャッピングする精度を従来の±１ｍｍ程度のギャップから記録素子基板とインク供給部材２のマウント精度とキャップ内精度のみを加味した０．３６ｍｍに嵌合部のギャップを加え、トータルとして０．５６ｍｍほどへ向上が見込めるキャッピング精度に優れた構造的信頼性の高いインクジェット記録ヘッドを提供することができる。 To protect the ink ejection surface when the ink is recovered or left, the recording element substrate and the ink supply member 2 have an accuracy of capping the ink ejection port and its periphery in the recording element substrate of the recording head from the conventional gap of about ± 1 mm. Provides an ink jet recording head with high structural reliability and excellent capping accuracy that can be improved to a total of about 0.56 mm by adding the gap of the fitting part to 0.36 mm that takes into account only the mounting accuracy and the in-cap accuracy. be able to.

（実施例１）
本実施例の記録ヘッドは、電気信号によりインクに対して膜沸騰を起こさせる熱エネルギーを生成する電気熱変換体を用いて記録を行うバブルジェット（登録商標）方式のサイドシューター型とされる記録ヘッドである。記録ヘッドは図１０に示すように、第一の記録素子基板（１）と第二の記録素子基板（２）、電気配線基板（３）からなる記録素子ユニット（７）と、インク供給部材１（８）、インク供給部材２（９）、タンクホルダー（１０）で構成される。記録素子基板は、第一の記録素子基板を例にとると図１２のようにＳｉ基板（２４）の中央にインク供給口（２１）が長穴の形状で開いており、この基板上には複数の発熱抵抗体がほぼ等間隔でインク供給口（２１）の両側に並んでいる。このような発熱抵抗体を形成した基板はヒーターボードと呼ばれている。ヒーターボード外部には発熱抵抗体に電力を供給するための配線が引き回されていて、ヒーターボード上の両端に設置されている電極パッド部（２２）と結線されている。そして、このようなヒーターボード上に複数の吐出口を有するオリフィスプレート等を貼り付けて、記録素子基板をなす。 Example 1
The recording head of the present embodiment is a bubble jet (registered trademark) side shooter type recording that uses an electrothermal transducer to generate thermal energy that causes film boiling with respect to ink by an electrical signal. Head. As shown in FIG. 10, the recording head includes a recording element unit (7) composed of a first recording element substrate (1), a second recording element substrate (2), and an electric wiring substrate (3), and an ink supply member 1. (8) The ink supply member 2 (9) and the tank holder (10) are included. Taking the first recording element substrate as an example, the recording element substrate has an ink supply port (21) opened in the shape of an elongated hole in the center of the Si substrate (24) as shown in FIG. A plurality of heating resistors are arranged on both sides of the ink supply port (21) at substantially equal intervals. A substrate on which such a heating resistor is formed is called a heater board. Wiring for supplying power to the heating resistor is routed outside the heater board, and is connected to electrode pad portions (22) installed at both ends on the heater board. Then, an orifice plate or the like having a plurality of discharge ports is attached on such a heater board to form a recording element substrate.

そしてヒーターボードの電極パッド上にバンプ（２３）を形成し、電気配線基板との間をインナーリードを用いたＴＡＢ実装法によって、電気接合され、接続部分は封止剤によって封止される。このように構成された記録素子ユニットはインク供給部材とタンクホルダーからなるホルダーユニットに接合され、記録ヘッドをなす。 Then, bumps (23) are formed on the electrode pads of the heater board, and are electrically joined to the electrical wiring board by a TAB mounting method using inner leads, and the connection portions are sealed with a sealant. The recording element unit configured as described above is joined to a holder unit including an ink supply member and a tank holder to form a recording head.

図１、図２、図３、図４は、本発明の第１の実施例のインクジェット記録ヘッドの構造を説明する図である。ここで（１）は第一の記録素子基板、（２）は第二の記録素子基板、（３）は電気配線基板、（４）は電気配線テープ、（５）は電気コンタクト基板、（７）は記録素子ユニット、（８）はインク供給部材(1)、（９）はインク供給部材２、（１０）はタンクホルダー、を示し、インクタンクより供給されるインクがインク供給部材内のインク供給路を通って記録素子基板側へ流れ、インク吐出口より吐出される。かつ、本実施例では、電気配線テープ（４）の貫通穴とインク供給部材２（１０）の凹部からなる凹部（６）が第一の記録素子基板（１）の近傍に設けてある。その形状は図１（ａ）のＡ−Ａ断面として図１（ｂ）に示す。かつ、記録装置側にこの記録ヘッドの記録素子基板（１）、（２）をキャッピングするキャップユニットが支持固定してあり、このキャップユニットを図３（ａ）に示す。ここで、（１１）は第一の記録素子基板キャッピング用多孔質部材、（１２）は第二の記録素子基板キャッピング用多孔質部材、（１５）はキャップ、（１３）はキャップと一体でテーパ部をもつ突起、（１４）はベース、を示し、突起（１３）と電気配線テープ（４）、インク供給部材２（９）からなる凹部（６）とがかみ合い、多孔質部材（１１）、（１２）（本実施例では例えばスポンジ状の部材）を記録ヘッドの記録素子基板に圧接させることでインクの吸引回復、また放置時のインク吐出面の保護をする構造になっている。ここで、突起（１３）の構造に関しては図３（ｂ）のようなベース（１４）と一体で例えば樹脂製のテーパ状のものを用いることも出来る。また電気配線テープ（４）に設ける貫通穴とインク供給部材２（９）に設ける凹部からなる凹部（６）は例えば図１（ｂ）の断面のようであり、凹部の位置は配線に干渉しないようにするため、また配線抵抗を上げないようにするため、かつ、電気配線テープ（４）の最適なサイズという観点から図４においてＢ、Ｃの場所にあるより図１（ａ）に示したように、第一の記録素子基板（１）の近傍にあり、かつ、記録素子基板の配線飛び出し方向にあることが望ましい。また本実施例では図３の突起（１３）と記録ヘッド側の凹部（６）の嵌合によりキャッピングの位置決め精度を図１６の表で示す。表の記録素子基板―インク供給部材２と、キャップ内の精度の合計±０．３６［ｍｍ］に加え、嵌合部の±０．２［ｍｍ］のギャップを加えトータル±０．５６［ｍｍ］として実現できる。この構造とすることで、インクの吸引回復時、あるいは放置時のインク吐出面の保護として記録ヘッドの記録素子基板におけるインク吐出口とその周辺を精度良くキャッピングすることのできる構造的信頼性が高いインクジェット記録ヘッドを提供することができる。 1, 2, 3 and 4 are diagrams for explaining the structure of an ink jet recording head according to a first embodiment of the present invention. Here, (1) is the first recording element substrate, (2) is the second recording element substrate, (3) is the electrical wiring substrate, (4) is the electrical wiring tape, (5) is the electrical contact substrate, (7 ) Indicates a recording element unit, (8) indicates an ink supply member (1), (9) indicates an ink supply member 2, and (10) indicates a tank holder. The ink supplied from the ink tank is ink in the ink supply member. It flows to the recording element substrate side through the supply path and is discharged from the ink discharge port. In this embodiment, a recess (6) comprising a through hole of the electric wiring tape (4) and a recess of the ink supply member 2 (10) is provided in the vicinity of the first recording element substrate (1). The shape is shown in FIG. 1 (b) as an AA cross section in FIG. 1 (a). In addition, a cap unit for capping the recording element substrates (1) and (2) of the recording head is supported and fixed on the recording apparatus side, and this cap unit is shown in FIG. Here, (11) is a first recording element substrate capping porous member, (12) is a second recording element substrate capping porous member, (15) is a cap, and (13) is a taper integrated with the cap. A protrusion having a portion, (14) indicates a base, and the protrusion (13) meshes with the recess (6) made of the electric wiring tape (4) and the ink supply member 2 (9), and the porous member (11), (12) The structure is such that ink suction recovery is performed by pressing the recording element substrate of the recording head (for example, a sponge-like member in this embodiment), and the ink ejection surface is protected when left standing. Here, regarding the structure of the protrusion (13), for example, a taper made of resin can be used integrally with the base (14) as shown in FIG. A recess (6) comprising a through hole provided in the electrical wiring tape (4) and a recess provided in the ink supply member 2 (9) is, for example, as shown in the cross section of FIG. 1B, and the position of the recess does not interfere with the wiring. In order to prevent the wiring resistance from increasing, and from the viewpoint of the optimum size of the electric wiring tape (4), it is shown in FIG. Thus, it is desirable that it is in the vicinity of the first recording element substrate (1) and in the direction of jumping out the wiring of the recording element substrate. In this embodiment, the positioning accuracy of capping is shown in the table of FIG. 16 by fitting the protrusion (13) of FIG. 3 and the recess (6) on the recording head side. In addition to the recording element substrate-ink supply member 2 in the table and the total accuracy within the cap ± 0.36 [mm], a gap of ± 0.2 [mm] of the fitting portion is added to give a total of ± 0.56 [mm] ] Can be realized. With this structure, it is possible to accurately capping the ink discharge port and its periphery in the recording element substrate of the recording head as protection of the ink discharge surface when the ink is recovered by suction or when it is left standing. An ink jet recording head can be provided.

（実施例２）
本実施例の記録ヘッドは、電気信号によりインクに対して膜沸騰を起こさせる熱エネルギーを生成する電気熱変換体を用いて記録を行うバブルジェット（登録商標）方式のサイドシューター型とされる記録ヘッドである。記録ヘッドは図１０に示すように、第一の記録素子基板（１）と第二の記録素子基板（２）、電気配線基板（３）からなる記録素子ユニット（７）と、インク供給部材１（８）、インク供給部材２（９）、タンクホルダー（１０）で構成される。記録素子基板は、第一の記録素子基板を例にとると図１２のようにＳｉ基板（２４）の中央にインク供給口（２１）が長穴の形状で開いており、この基板上には複数の発熱抵抗体がほぼ等間隔でインク供給口（２１）の両側に並んでいる。このような発熱抵抗体を形成した基板はヒーターボードと呼ばれている。ヒーターボード外部には発熱抵抗体に電力を供給するための配線が引き回されていて、ヒーターボード上の両端に設置されている電極パッド部（２２）と結線されている。そして、このようなヒーターボード上に複数の吐出口を有するオリフィスプレート等を貼り付けて、記録素子基板をなす。 (Example 2)
The recording head of the present embodiment is a bubble jet (registered trademark) side shooter type recording that uses an electrothermal transducer to generate thermal energy that causes film boiling with respect to ink by an electrical signal. Head. As shown in FIG. 10, the recording head includes a recording element unit (7) composed of a first recording element substrate (1), a second recording element substrate (2), and an electric wiring substrate (3), and an ink supply member 1. (8) The ink supply member 2 (9) and the tank holder (10) are included. Taking the first recording element substrate as an example, the recording element substrate has an ink supply port (21) opened in the shape of an elongated hole in the center of the Si substrate (24) as shown in FIG. A plurality of heating resistors are arranged on both sides of the ink supply port (21) at substantially equal intervals. A substrate on which such a heating resistor is formed is called a heater board. Wiring for supplying power to the heating resistor is routed outside the heater board, and is connected to electrode pad portions (22) installed at both ends on the heater board. Then, an orifice plate or the like having a plurality of discharge ports is attached on such a heater board to form a recording element substrate.

図５、図６、図７、図８は、本発明の第二の実施例のインクジェット記録ヘッドの構造を説明する図である。ここで、（２５）は記録素子基板、（３）は電気配線基板、（４）は電気配線テープ、（５）は電気コンタクト基板、（７）は記録素子ユニット、（８）はインク供給部材１、（９）はインク供給部材２、（１０）はタンクホルダー、を示し、インクタンクより供給されるインクがインク供給部材内のインク供給路を通って記録素子基板側へ流れ、インク吐出口より吐出される。 5, FIG. 6, FIG. 7, and FIG. 8 are diagrams for explaining the structure of an ink jet recording head according to a second embodiment of the present invention. Here, (25) is a recording element substrate, (3) is an electrical wiring substrate, (4) is an electrical wiring tape, (5) is an electrical contact substrate, (7) is a recording element unit, and (8) is an ink supply member. 1 and (9) show an ink supply member 2 and (10) a tank holder. The ink supplied from the ink tank flows to the recording element substrate side through the ink supply path in the ink supply member, and the ink discharge port More discharged.

本実施例では記録素子基板の構造が実施例１と異なり、記録素子基板に設けた電極パッド列が記録装置へのコンタクトに向かう電気配線基板の配線方向と同方向をなしており、この場合図５のＤ部に実施例１と同様の形状の凹部（６）を設けている。ここで、凹部（６）は記録素子基板近傍で、配線抵抗（配幅）や電気配線テープのサイズに影響を与えない場所として、図８のＥ，Ｆに設けることも可能である。かつ、記録装置側にこの記録ヘッドの記録素子基板をキャッピングするキャップが支持固定してあり、このキャップを図７に示す。ここで、（１３）は樹脂製の突起、（１４）はベース、（１５）はキャップ、（２６）は記録素子基板キャッピング用多孔質部材を示し、突起（１３）と電気配線テープ（４）、インク供給部材２（９）からなる凹部（６）とがかみ合い、この多孔質部材（２６）（本実施例では例えばスポンジ状の部材）を記録ヘッドの記録素子基板に圧接させることでインクの吸引回復、また放置時のインク吐出面の保護をする構造となっている。また本実施例では実施例１の場合と同様に図７の突起（１３）と記録ヘッド側の凹部（６）の嵌合によりキャッピングの位置決め精度を図１６の記録素子基板―インク供給部材２と、キャップ内の精度の合計±０．３６［ｍｍ］に加え、嵌合部の±０．２［ｍｍ］のギャップを加えトータル±０．５６ｍｍとして実現できる。この構造とすることで、インクの吸引回復時、あるいは放置時のインク吐出面の保護として記録ヘッドの記録素子基板におけるインク吐出口とその周辺を精度良くキャッピングすることのできる構造的信頼性が高いインクジェット記録ヘッドを提供することができる。 In this embodiment, the structure of the printing element substrate is different from that of the first embodiment, and the electrode pad row provided on the printing element substrate is in the same direction as the wiring direction of the electric wiring board toward the contact to the printing apparatus. 5 is provided with a recess (6) having the same shape as that of the first embodiment. Here, the concave portion (6) can be provided in E and F of FIG. 8 as a place that does not affect the wiring resistance (width) and the size of the electric wiring tape in the vicinity of the recording element substrate. Further, a cap for capping the recording element substrate of the recording head is supported and fixed on the recording apparatus side, and this cap is shown in FIG. Here, (13) is a resin protrusion, (14) is a base, (15) is a cap, (26) is a porous member for recording element substrate capping, and the protrusion (13) and the electric wiring tape (4) The concave portion (6) made of the ink supply member 2 (9) is engaged, and the porous member (26) (for example, a sponge-like member in this embodiment) is brought into pressure contact with the recording element substrate of the recording head, thereby allowing the ink to flow. It has a structure that recovers suction and protects the ink ejection surface when left unattended. Further, in the present embodiment, as in the case of the first embodiment, the positioning accuracy of the capping is set to be the same as that of the recording element substrate-ink supply member 2 of FIG. 16 by fitting the protrusion (13) of FIG. In addition to the total accuracy within the cap of ± 0.36 [mm], a gap of ± 0.2 [mm] of the fitting portion is added to achieve a total of ± 0.56 mm. With this structure, it is possible to accurately capping the ink discharge port and its periphery in the recording element substrate of the recording head as protection of the ink discharge surface when the ink is recovered by suction or when it is left standing. An ink jet recording head can be provided.

なお、図１１は、記録ヘッドの斜視図である。 FIG. 11 is a perspective view of the recording head.

実施例１における記録ヘッドカートリッジのインク吐出面の図。FIG. 3 is a diagram of an ink ejection surface of the recording head cartridge according to the first exemplary embodiment. 実施例１おける記録ヘッドカートリッジの斜視図。FIG. 3 is a perspective view of a recording head cartridge in Embodiment 1. 実施例１におけるキャップユニットを示す図。FIG. 3 is a diagram illustrating a cap unit according to the first embodiment. 実施例１における記録ヘッドカートリッジのインク吐出面の他の例を示す図。6 is a diagram illustrating another example of the ink ejection surface of the recording head cartridge according to Embodiment 1. FIG. 実施例２における記録ヘッドカートリッジのインク吐出面の図。FIG. 6 is a diagram of an ink ejection surface of a recording head cartridge in Embodiment 2. 実施例２における記録ヘッドカートリッジの斜視図。FIG. 9 is a perspective view of a recording head cartridge in Embodiment 2. 実施例２におけるキャップユニットを示す図。FIG. 6 is a diagram illustrating a cap unit according to the second embodiment. 実施例２における記録ヘッドカートリッジのインク吐出面の他の例を示す図。6 is a diagram illustrating another example of the ink ejection surface of the recording head cartridge according to Embodiment 2. FIG. 記録ヘッドカートリッジの組み立て完成状態の斜視図。FIG. 3 is a perspective view of a recording head cartridge in an assembled state. 記録ヘッドを説明する分解斜視図。FIG. 3 is an exploded perspective view illustrating a recording head. 記録ヘッドの斜視図。The perspective view of a recording head. 第１の記録素子基板内の構成を説明する斜視図。FIG. 3 is a perspective view illustrating a configuration inside a first recording element substrate. 一般的なインクジェット記録装置の斜視図。1 is a perspective view of a general ink jet recording apparatus. 一般的なインクジェット記録装置の内部構造を示す図。The figure which shows the internal structure of a general inkjet recording device. 記録装置が具える一般的なキャップユニットを示す図。The figure which shows the general cap unit with which a recording device is provided. 従来の記録ヘッドに関するキャッピング精度内訳を示す図。The figure which shows the capping precision breakdown regarding the conventional recording head.

Explanation of symbols

（１）第一の記録素子基板
（２）第二の記録素子基板
（３）電気配線基板
（４）電気配線テープ
（５）電気コンタクト基板
（６）凹部
（７）記録素子ユニット
（８）インク供給部材１
（９）インク供給部材２
（１０）タンクホルダー
（１１）第一の記録素子基板キャッピング用多孔質部材
（１２）第二の記録素子基板キャッピング用多孔質部材
（１３）突起
（１４）ベース
（１５）キャップ
（１６）インクタンク
（１７）記録ヘッド
（１８）記録ヘッドカートリッジ
（１９）インク吐出口
（２０）電気熱変換素子
（２１）インク供給口
（２２）電極パッド部
（２３）バンプ
（２４）Ｓｉ基板
（２５）記録素子基板
（２６）記録素子基板キャッピング用多孔質部材
（２７）本体
（２８）給送部
（２９）排出トレイ
（３０）キャリッジ
（３１）キャップユニット (1) First recording element substrate (2) Second recording element substrate (3) Electrical wiring substrate (4) Electrical wiring tape (5) Electrical contact substrate (6) Recess (7) Recording element unit (8) Ink Supply member 1
(9) Ink supply member 2
(10) Tank holder (11) First recording element substrate capping porous member (12) Second recording element substrate capping porous member (13) Protrusion (14) Base (15) Cap (16) Ink tank (17) Recording head (18) Recording head cartridge (19) Ink discharge port (20) Electrothermal conversion element (21) Ink supply port (22) Electrode pad section (23) Bump (24) Si substrate (25) Recording element Substrate (26) Porous member for recording element substrate capping (27) Main body (28) Feed section (29) Discharge tray (30) Carriage (31) Cap unit

Claims

An ink jet recording apparatus comprising a concave portion in a part of a capping surface of an ink jet recording head, the concave portion being fitted and positioned by a convex portion of a cap unit provided in the ink jet recording apparatus.

The inkjet recording apparatus according to claim 1, wherein the capping surface is formed of an electric wiring substrate.

The inkjet recording apparatus according to claim 1, wherein the convex portion is an elastic body integrated with a cap constituting the cap unit.

The ink jet recording apparatus according to claim 1, wherein the convex portion is made of a resin member that is separate from the cap constituting the cap unit.

The concave portion has an opening having a larger gap than the convex portion and a fitting positioning portion that forms a minute gap with respect to the convex portion, and the opening and the fitting positioning portion are connected in a tapered shape. The inkjet recording device as described in -4.

A recording element substrate having a liquid ejection unit having energy generating means for ejecting liquid in response to an electrical signal, and an ink supply path for fixing and supporting the recording element substrate and supplying ink from an ink tank to the recording element substrate An ink jet recording head having an ink supply member, and an electric wiring substrate bonded and fixed on a surface parallel to a surface of the ink supply member on which the recording element substrate is fixed, and the ink supply member bonded and fixed on the ink supply member In the ink jet recording apparatus having a cap unit for capping the recording element substrate, there is at least one concave portion in the capping surface penetrating the electrical wiring substrate and having a concave shape in the ink supply member, and in the cap unit The convex part which fits with this recessed part is provided, The Claims 1-5 characterized by the above-mentioned. Ink jet recording apparatus.

The inkjet recording apparatus according to claim 1, wherein the concave portion is at least one in the vicinity of the recording element substrate.

2. The recording element substrate has a large and small recording element substrate, the nozzle arrangement direction of the recording element substrate is the same as the wiring drawing direction, and the concave portion is at least one place between the small recording element substrate and the electrical contact portion. 8. The inkjet recording apparatus according to -7.

The nozzle arrangement direction of the recording element substrate and the wiring drawing direction are orthogonal to each other, and the concave portion is located on the opposite side of the electrical contact portion with respect to the recording element substrate or toward the electrical contact portion in the capping surface. The ink jet recording apparatus according to claim 1, wherein there are at least one location on an extended line of the substrate.