JP6737096B2 - Liquid filling method and liquid ejecting apparatus - Google Patents

Liquid filling method and liquid ejecting apparatus Download PDF

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JP6737096B2
JP6737096B2 JP2016180255A JP2016180255A JP6737096B2 JP 6737096 B2 JP6737096 B2 JP 6737096B2 JP 2016180255 A JP2016180255 A JP 2016180255A JP 2016180255 A JP2016180255 A JP 2016180255A JP 6737096 B2 JP6737096 B2 JP 6737096B2
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liquid
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flow path
storage body
intermediate storage
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JP2018043423A (en
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隆紀 関
隆紀 関
木村 仁俊
仁俊 木村
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Seiko Epson Corp
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Description

本発明は、インク等の液体を液体収容体から液体噴射部までの液体供給流路に充填する液体充填方法及び液体噴射装置に関する。 The present invention relates to a liquid filling method and a liquid ejecting apparatus that fill a liquid supply channel from a liquid container to a liquid ejecting unit with a liquid such as ink.

液体噴射装置の一例として、印刷に使うインク等の液体が収容された液体収容体から液体供給流路を通じて供給された液体を液体噴射部(例えば吐出ヘッド)から用紙等の媒体に向かって噴射することで、媒体に画像等の印刷を行うインクジェット式のプリンターが知られている(例えば、特許文献1参照)。 As an example of the liquid ejecting apparatus, a liquid ejected from a liquid ejecting portion (for example, an ejection head) to a medium such as a paper is ejected from a liquid accommodating body accommodating a liquid such as ink used for printing through a liquid supply channel. Therefore, an inkjet printer that prints an image or the like on a medium is known (for example, see Patent Document 1).

ところで、液体噴射装置をユーザーが初めて使用するとき、液体供給流路は何も充填されていない(気体が充填されている)状態にある。そのため、液体噴射装置は、何も充填されていない液体供給流路に液体を充填する液体充填動作(初期充填動作)を行う。例えば特許文献1に記載された液体噴射装置では、液体噴射部においてキャップで封止されたノズルの周囲の空間内を減圧し、液体供給流路内の空気と共に液体収容体からの液体をノズルから吸引することにより、液体供給流路に液体を充填する充填動作を行う。 By the way, when a user uses the liquid ejecting apparatus for the first time, the liquid supply channel is in a state of being unfilled (filled with gas). Therefore, the liquid ejecting apparatus performs a liquid filling operation (initial filling operation) of filling the liquid into the liquid supply flow path that is not filled with anything. For example, in the liquid ejecting apparatus described in Patent Document 1, the space around the nozzle sealed by the cap in the liquid ejecting unit is depressurized, and the liquid from the liquid container is discharged from the nozzle together with the air in the liquid supply channel. By suctioning, a filling operation of filling the liquid in the liquid supply channel is performed.

特開2006−137181号公報JP, 2006-137181, A

特許文献1に記載の液体噴射装置では、充填動作において液体収容体と接続された接続端部から液体供給流路(特に供給管)内に存在する空気を液体と混在した状態で圧力調整機構および液体噴射部を経由して外部に排出させなければならないため、充填動作後の液体供給流路内に空気が残りやすいという課題がある。 In the liquid ejecting apparatus described in Patent Document 1, the pressure adjusting mechanism and the air existing in the liquid supply passage (particularly the supply pipe) from the connection end connected to the liquid container in the filling operation are mixed with the liquid. Since it has to be discharged to the outside via the liquid ejecting unit, there is a problem that air tends to remain in the liquid supply passage after the filling operation.

本発明の目的は、液体収容体と液体噴射部とを接続する液体供給流路に液体を充填する際に空気を効率よく排出できる液体充填方法及び液体噴射装置を提供することにある。 An object of the present invention is to provide a liquid filling method and a liquid ejecting apparatus that can efficiently discharge air when filling a liquid in a liquid supply channel that connects a liquid container and a liquid ejecting unit.

以下、上記課題を解決するための手段及びその作用効果について記載する。
上記課題を解決する液体充填方法は、液体を噴射する液体噴射部と、液体収容体が収容する前記液体を前記液体噴射部に供給可能に該液体収容体と該液体噴射部とを接続する液体供給流路であって、前記液体収容体と前記液体噴射部との間となる位置に、前記液体を貯留可能な中間貯留部を有する中間貯留体を接続可能な中間貯留体接続部を有する液体供給流路と、を備える液体噴射装置に前記液体を充填する液体充填方法であって、前記液体供給流路のうち前記中間貯留体接続部より上流側となる上流側液体供給流路内に該中間貯留体接続部から前記液体を流動させて、該上流側液体供給流路に該液体を充填する。
Hereinafter, the means for solving the above problems and the operation effects thereof will be described.
A liquid filling method for solving the above-described problem is a liquid ejecting unit that ejects a liquid, and a liquid that connects the liquid container and the liquid ejecting unit so that the liquid contained in the liquid container can be supplied to the liquid ejecting unit. A liquid having an intermediate reservoir connecting portion capable of connecting an intermediate reservoir having an intermediate reservoir capable of retaining the liquid at a position between the liquid container and the liquid ejecting unit in the supply channel. A liquid filling method for filling the liquid in a liquid ejecting apparatus comprising a supply flow path, wherein the liquid is supplied in an upstream side liquid supply flow path upstream of the intermediate reservoir connecting portion in the liquid supply flow path. The liquid is caused to flow from the intermediate reservoir connecting portion to fill the upstream liquid supply flow path with the liquid.

上記方法によれば、上流側液体供給流路に液体を充填する際に上流側液体供給流路内に初期的に存在する空気を上流側に排出することができるので、液体噴射部内を経由して外部に排出する空気の量を低減でき、効率的な充填動作が行える。 According to the above method, since the air initially present in the upstream liquid supply channel can be discharged to the upstream side when the upstream liquid supply channel is filled with the liquid, it can be passed through the liquid ejecting unit. The amount of air discharged to the outside can be reduced, and efficient filling operation can be performed.

上記液体充填方法において、前記中間貯留部に前記液体が予め充填された前記中間貯留体を前記中間貯留体接続部に接続し、前記上流側液体供給流路に前記中間貯留部の前記液体を充填することが好ましい。 In the above liquid filling method, the intermediate reservoir, in which the liquid is previously filled in the intermediate reservoir, is connected to the intermediate reservoir connecting portion, and the upstream side liquid supply flow channel is filled with the liquid in the intermediate reservoir. Preferably.

上記方法によれば、上流側液体供給流路内に中間貯留体接続部側から液体を流動させて、上流側液体供給流路に液体を充填することが容易に行える。
上記液体充填方法において、前記中間貯留体には、前記中間貯留部内が該中間貯留部の外側空間より圧力が高くなるように前記液体が予め充填されていることが好ましい。
According to the above method, it is possible to easily fill the upstream liquid supply flow passage with the liquid by causing the liquid to flow from the intermediate reservoir connecting portion side into the upstream liquid supply passage.
In the above liquid filling method, it is preferable that the intermediate reservoir is pre-filled with the liquid such that the pressure inside the intermediate reservoir is higher than the space outside the intermediate reservoir.

上記方法によれば、中間貯留部内の液体が加圧された状態の中間貯留体を使用することにより液体が上流側液体供給流路内を流動する際の流量(単位時間当たりに流れる液体量)を多くできるので、効率的な充填動作が行える。 According to the above method, by using the intermediate reservoir in a state where the liquid in the intermediate reservoir is pressurized, the flow rate of the liquid flowing in the upstream liquid supply channel (the amount of liquid flowing per unit time) Since the number of charges can be increased, an efficient filling operation can be performed.

上記液体充填方法において、前記液体供給流路のうち前記中間貯留体接続部より下流側となる下流側液体供給流路内に該中間貯留体接続部から前記液体を流動させて、該下流側液体供給流路に該液体を充填することが好ましい。 In the above liquid filling method, the liquid is flowed from the intermediate reservoir connecting portion into a downstream liquid supply passage downstream of the intermediate reservoir connecting portion in the liquid supply passage, and the downstream liquid It is preferable to fill the supply channel with the liquid.

上記方法によれば、下流側液体供給流路に液体を充填することにより液体供給流路内に液体を充填することができる。
上記課題を解決する液体噴射装置において、液体を噴射する液体噴射部と、前記液体を収容可能な液体収容部と該液体収容部に該液体を外部から注入可能な注入口と該液体収容部を大気に連通させる大気連通孔とを有する液体収容体と、前記液体収容体が収容する前記液体を前記液体噴射部に供給可能に該液体収容体と該液体噴射部とを接続する液体供給流路であって、前記液体収容体と前記液体噴射部との間となる位置に、前記液体を貯留可能な中間貯留部を有する中間貯留体を接続可能な中間貯留体接続部を有する液体供給流路と、前記中間貯留体接続部に接続された前記中間貯留体の前記中間貯留部が貯留する前記液体を、前記液体供給流路のうち該中間貯留体接続部より上流側となる上流側液体供給流路内に流動させる液体流動機構と、を備えている。
According to the above method, the liquid can be filled in the liquid supply passage by filling the liquid in the downstream liquid supply passage.
In a liquid ejecting apparatus that solves the above problems, a liquid ejecting unit that ejects a liquid, a liquid containing unit that can contain the liquid, an injection port that can inject the liquid into the liquid containing unit from the outside, and the liquid containing unit. A liquid container having an air communication hole communicating with the atmosphere, and a liquid supply channel connecting the liquid container and the liquid ejecting unit so that the liquid contained in the liquid container can be supplied to the liquid ejecting unit. And a liquid supply flow path having an intermediate reservoir connecting portion capable of connecting an intermediate reservoir having an intermediate reservoir capable of retaining the liquid at a position between the liquid container and the liquid ejecting unit And an upstream side liquid supply that is the upstream side of the intermediate storage body connecting portion in the liquid supply flow path, for storing the liquid stored in the intermediate storage portion of the intermediate storage body connected to the intermediate storage body connecting portion. And a liquid flow mechanism that causes the liquid to flow into the flow path.

上記構成によれば、上流側液体供給流路に液体を充填する際に上流側液体供給流路内に初期的に存在する空気を上流側に排出することができるので、液体噴射部内を経由して外部に排出する空気の量を低減でき、効率的な充填動作が行える。 According to the above configuration, when the liquid is filled in the upstream liquid supply channel, the air initially present in the upstream liquid supply channel can be discharged to the upstream side, so that the air is passed through the liquid ejecting unit. The amount of air discharged to the outside can be reduced, and efficient filling operation can be performed.

上記液体噴射装置において、前記液体流動機構として、前記上流側液体供給流路より重力方向において上方となる位置に前記中間貯留体接続部を備えることが好ましい。
上記構成によれば、中間貯留部内の液体と上流側液体供給流路との高低差(水頭差)を利用することにより中間貯留部内の液体を上流側液体供給流路内に流動させることができる。
In the above liquid ejecting apparatus, it is preferable that the liquid flow mechanism includes the intermediate reservoir connecting portion at a position above the upstream liquid supply flow path in the gravity direction.
According to the above configuration, by utilizing the height difference (head difference) between the liquid in the intermediate reservoir and the upstream liquid supply passage, the liquid in the intermediate reservoir can be made to flow into the upstream liquid supply passage. ..

上記液体噴射装置において、前記液体流動機構として、前記中間貯留体接続部に接続された前記中間貯留体の前記中間貯留部内の前記液体を加圧する加圧機構を備えることが好ましい。 In the above liquid ejecting apparatus, it is preferable that the liquid flow mechanism includes a pressurizing mechanism that pressurizes the liquid in the intermediate reservoir of the intermediate reservoir connected to the intermediate reservoir connecting portion.

上記構成によれば、中間貯留部内の液体を加圧することにより液体が上流側液体供給流路内を流動する際の流量(単位時間当たりに流れる液体量)を多くできるので、効率的な充填動作が行える。 According to the above configuration, the flow rate (the amount of liquid flowing per unit time) when the liquid flows in the upstream liquid supply flow path can be increased by pressurizing the liquid in the intermediate reservoir, so that the efficient filling operation is possible. Can be done.

上記液体噴射装置において、前記液体流動機構として、前記上流側液体供給流路内を減圧する減圧機構を備えることが好ましい。
上記構成によれば、上流側液体供給流路内を減圧することにより液体が上流側液体供給流路内を流動する際の流量(単位時間当たりに流れる液体量)を多くできるので、効率的な充填動作が行える。
In the above liquid ejecting apparatus, it is preferable that the liquid flowing mechanism includes a depressurizing mechanism that depressurizes the inside of the upstream liquid supply passage.
According to the above configuration, the flow rate (the amount of liquid flowing per unit time) when the liquid flows in the upstream liquid supply passage can be increased by reducing the pressure in the upstream liquid supply passage, which is efficient. The filling operation can be performed.

第1実施形態における液体噴射装置を含む複合機を示す斜視図。FIG. 3 is a perspective view showing a multifunction machine including the liquid ejecting apparatus according to the first embodiment. 液体噴射装置の図1における2−2線で切断した模式平断面図。FIG. 2 is a schematic plan sectional view of the liquid ejecting apparatus taken along line 2-2 in FIG. 1. 液体噴射装置の液体供給系を示す模式断面図。FIG. 3 is a schematic cross-sectional view showing a liquid supply system of a liquid ejecting apparatus. 液体噴射装置における液体充填方法の手順を示す模式断面図。FIG. 6 is a schematic cross-sectional view showing the procedure of a liquid filling method in the liquid ejecting apparatus. 液体充填方法の手順を示す模式断面図。The schematic cross section which shows the procedure of a liquid filling method. 液体充填方法の手順を示す模式断面図。The schematic cross section which shows the procedure of a liquid filling method. 液体充填方法の手順を示す模式断面図。The schematic cross section which shows the procedure of a liquid filling method. 第2実施形態の液体噴射装置における液体供給系を示す模式断面図。The schematic cross section which shows the liquid supply system in the liquid ejecting apparatus of 2nd Embodiment.

(第1実施形態)
以下、液体噴射装置(例えば印刷装置)を含む複合機について図面を参照して説明する。なお、本実施形態の液体噴射装置は、例えばインク等からなる液体を用紙等からなる媒体に噴射することにより印刷を行うインクジェット式のプリンターで構成されている。また、液体噴射装置は、印刷方式が媒体の搬送方向Yと交差する走査方向Xに液体噴射部を移動させて印刷を行う、所謂シリアルプリンターである。
(First embodiment)
A multifunction machine including a liquid ejecting apparatus (for example, a printing apparatus) will be described below with reference to the drawings. The liquid ejecting apparatus according to the present embodiment is configured by an ink jet printer that performs printing by ejecting a liquid such as ink onto a medium such as paper. In addition, the liquid ejecting apparatus is a so-called serial printer in which the printing method is performed by moving the liquid ejecting unit in the scanning direction X intersecting the medium transport direction Y and performing printing.

図1に示すように、複合機11は、液体を噴射する液体噴射装置12と、読取機能を有する画像読取装置13とを備えている。液体噴射装置12は、直方体状の筐体14を有し、その筐体14の上に画像読取装置13が配置されている。 As shown in FIG. 1, the multifunction device 11 includes a liquid ejecting device 12 that ejects liquid and an image reading device 13 having a reading function. The liquid ejecting apparatus 12 has a rectangular parallelepiped casing 14, and the image reading device 13 is arranged on the casing 14.

筐体14には、操作パネル部15が設けられている。操作パネル部15は、例えば電源ボタン16aおよび操作ボタン16b等を含む操作部16と、タッチパネル方式の液晶表示画面等からなる表示部17とを有している。 An operation panel unit 15 is provided in the housing 14. The operation panel unit 15 has an operation unit 16 including, for example, a power button 16a and an operation button 16b, and a display unit 17 including a touch panel type liquid crystal display screen or the like.

また、筐体14の前面には、印刷された媒体Mを排出する排出口19が開口している。筐体14には、排出口19から排出される媒体Mを支持する矩形板状の排出トレイ20が、媒体Mの排出方向と平行な方向にスライド移動可能に設けられている。筐体14における排出トレイ20の下側に凹設されたカセット装着部21には、印刷に用いる複数の媒体Mを積層状態で収容可能な給送カセット22が挿抜自在に装着されている。 Further, a discharge port 19 for discharging the printed medium M is opened on the front surface of the housing 14. A rectangular plate-shaped ejection tray 20 that supports the medium M ejected from the ejection port 19 is provided in the housing 14 so as to be slidable in a direction parallel to the ejection direction of the medium M. A cassette cassette 21 that is recessed in the lower side of the discharge tray 20 in the housing 14 is detachably mounted with a feeding cassette 22 that can store a plurality of media M used for printing in a stacked state.

また、図1に示すように、液体噴射装置12の筐体14における端部(図1では右端部)に設けられた透明窓23と対向する位置には、液体供給ユニット29が収容されている。液体供給ユニット29は、複数(本実施形態では4つ)の液体収容体30(30a〜30d)を一体的に取り扱い可能な構造体であり、後述するように、各液体収容体30には液体(本例ではインク)が注入可能とされている。 Further, as shown in FIG. 1, a liquid supply unit 29 is housed at a position facing a transparent window 23 provided at an end portion (right end portion in FIG. 1) of the housing 14 of the liquid ejecting apparatus 12. .. The liquid supply unit 29 is a structure capable of integrally handling a plurality (four in the present embodiment) of liquid containers 30 (30a to 30d), and as described later, each liquid container 30 has a liquid. (Ink in this example) can be injected.

また、図1及び図2に示すように、筐体14における透明窓23よりも上側の位置に形成された前下がり勾配の傾斜部24には、開口部25を閉塞する閉じ位置(図1参照)と開口部25を開放する開き位置(図2参照)との間で開閉可能なカバー部材26が支軸27(図2参照)を中心に回動可能に設けられている。なお、図2に示すように、カバー部材26には、ユーザーが開くときに指先を引っ掛けるための凹状の指掛け部26aと、裏面においてカバー部材26の回動半径と平行な方向に沿って延びる複数(本例では4つ)の凹溝28a〜28dとが形成されている。ちなみに、各凹溝28a〜28dは、透明窓23の裏側に幅方向に並列に配置された各液体収容体30(30a〜30d)と対応する位置に設けられ、不図示の液体ボトルから液体収容体30の注入口54に液体を注入するときにその液体ボトルを液体収容体30と対応する位置に位置決めする位置決め凹部として機能する。 Further, as shown in FIG. 1 and FIG. 2, in the inclined portion 24 of the front downward slope formed at a position above the transparent window 23 in the housing 14, a closed position for closing the opening 25 (see FIG. 1). ) And an open position (see FIG. 2) that opens the opening 25, a cover member 26 that can be opened and closed is provided so as to be rotatable around a support shaft 27 (see FIG. 2). As shown in FIG. 2, the cover member 26 has a concave finger hook 26a for hooking a fingertip when the user opens it, and a plurality of back surface extending in a direction parallel to the turning radius of the cover member 26. (Four in this example) concave grooves 28a to 28d are formed. Incidentally, the concave grooves 28a to 28d are provided at positions corresponding to the liquid containers 30 (30a to 30d) arranged in parallel in the width direction on the back side of the transparent window 23, and liquid is stored from a liquid bottle (not shown). It functions as a positioning recess that positions the liquid bottle at a position corresponding to the liquid container 30 when the liquid is injected into the injection port 54 of the body 30.

また、図1に示すように、液体収容体30a〜30dの透明窓23と対向する部分には視認部56が設けられている。視認部56は、液体収容体30a〜30dの液体収容室57(図3参照)に収容された液体の液面を視認可能な透明材料で形成され、インクの注入上限を示す上限部58及びインク残量の下限水準を示す下限部59を有している。 Further, as shown in FIG. 1, a visual recognition portion 56 is provided in a portion of the liquid containers 30a to 30d facing the transparent window 23. The visual recognition part 56 is formed of a transparent material that can visually recognize the liquid level of the liquid contained in the liquid storage chambers 57 (see FIG. 3) of the liquid storage bodies 30a to 30d, and the upper limit part 58 and the ink that indicate the upper limit of ink injection. It has a lower limit part 59 that indicates the lower limit level of the remaining amount.

図2に示すように、筐体14内には、走査方向Xにキャリッジ34を移動させる移動機構35が設けられている。移動機構35は、一対のプーリー31,31に巻き掛けられたタイミングベルト32の一部に連結部33で固定されたキャリッジ34を、その動力源であるキャリッジモーター34Mの正逆転駆動により走査方向Xに往復移動させるベルト駆動方式を採用する。キャリッジ34の下面側には、複数種の液体(例えば4色のインク)を媒体Mに向かって噴射して印刷を行う液体噴射部36(例えば液体噴射ヘッド)が搭載されている。また、移動機構35は、キャリッジ34を走査方向Xに移動自在に支持する一対のレール37を備えている。キャリッジ34は、液体噴射部36が印刷のための液体の噴射を行わない待機時に、走査方向Xへの移動経路の一端部に相当する位置に設定されたホームポジションHPで待機する。 As shown in FIG. 2, a moving mechanism 35 that moves the carriage 34 in the scanning direction X is provided in the housing 14. The moving mechanism 35 drives a carriage 34 fixed to a part of a timing belt 32 wound around a pair of pulleys 31 and 31 with a connecting portion 33 by driving a carriage motor 34M, which is a power source thereof, in the forward and reverse directions to scan in the scanning direction X. Adopt a belt drive system that moves back and forth. A liquid ejecting unit 36 (for example, a liquid ejecting head) that ejects a plurality of types of liquids (for example, four color inks) toward the medium M to perform printing is mounted on the lower surface side of the carriage 34. The moving mechanism 35 also includes a pair of rails 37 that support the carriage 34 movably in the scanning direction X. The carriage 34 waits at the home position HP set at a position corresponding to one end of the movement path in the scanning direction X when the liquid ejecting unit 36 does not eject the liquid for printing.

また、筐体14内には、媒体Mの幅方向(走査方向Xに同じ)に沿って延びる支持台38が配置されている。支持台38は印刷時に搬送方向Yに搬送される媒体Mの下面を支持する台であり、その上面の一部には液体吸収材38aが露出している。 In addition, a support base 38 extending in the width direction of the medium M (same as the scanning direction X) is arranged in the housing 14. The support base 38 is a base that supports the lower surface of the medium M that is transported in the transport direction Y during printing, and the liquid absorbent 38a is exposed at a part of the upper surface thereof.

図2に示すように、液体噴射装置12は、媒体Mを搬送する搬送部39を備えている。搬送部39は、一例として、搬送方向Yにおける支持台38の上流側及び下流側にそれぞれ配置された搬送ローラー対39A,39Bを備えるローラー搬送方式を採用する。搬送部39が動力源となるモーター(図示略)の動力により駆動されることにより、媒体Mは支持台38に支持される経路を通って搬送方向Yに搬送される。なお、搬送部39は、媒体Mをベルトに載せて搬送するベルト搬送方式でもよい。 As shown in FIG. 2, the liquid ejecting apparatus 12 includes a transport unit 39 that transports the medium M. The transport unit 39 employs, for example, a roller transport system including transport roller pairs 39A and 39B arranged on the upstream side and the downstream side of the support base 38 in the transport direction Y, respectively. When the transport unit 39 is driven by the power of a motor (not shown) that serves as a power source, the medium M is transported in the transport direction Y through the path supported by the support base 38. The transport unit 39 may be of a belt transport type in which the medium M is placed on a belt and transported.

また、筐体14内で搬送部39よりも下流側となる位置に配置された支持フレーム部40上には、CPU等を備えた回路基板41からなる制御部50が実装されている。なお、図1に示す画像読取装置13は、その上面が開閉動作自在な原稿カバー13aによって覆われ、その上面を形成するガラス板(図示略)に載置された原稿の画像をガラス板の下方に設けられたイメージスキャナー(図示略)により読み取り、その読取画像(読取信号)を図2に示す回路基板41に伝送する。 In addition, a control unit 50 including a circuit board 41 having a CPU and the like is mounted on the support frame unit 40 arranged at a position on the downstream side of the transport unit 39 in the housing 14. The image reading apparatus 13 shown in FIG. 1 has an upper surface covered with a manuscript cover 13a that can be opened and closed, and displays an image of a manuscript placed on a glass plate (not shown) forming the upper surface of the manuscript under the glass plate. The image is read by an image scanner (not shown) provided in, and the read image (read signal) is transmitted to the circuit board 41 shown in FIG.

一端を液体供給ユニット29に接続された可撓性を有する液体供給チューブ42は、その中途部分を支持する固定部材43よりも他端側の部分が、走査方向Xに延びた後に折り返され、接続部44でキャリッジ34に接続されている。そして、液体供給チューブ42の他端はキャリッジ34上に搭載された各中間貯留体45に接続されている。 The flexible liquid supply tube 42, one end of which is connected to the liquid supply unit 29, is folded back after the portion on the other end side of the fixing member 43 supporting the middle portion thereof is extended in the scanning direction X and then folded back. The portion 44 is connected to the carriage 34. The other end of the liquid supply tube 42 is connected to each intermediate reservoir 45 mounted on the carriage 34.

中間貯留体45は、液体供給チューブ42によって供給された各液体を液体噴射部36へ供給する前に一時貯留する。図2等では、液体供給チューブ42は、複数(本実施形態では4つ)の液体収容体30a〜30dの個数と等しい複数本(本実施形態では4本)が引き回されるものであるが、図面の簡略化のため、4本のうち3本を省略して1本だけ描いている。これら複数の液体供給チューブ42は互いに一体に形成された多連チューブで構成することが好ましい。液体供給チューブ42は、液体収容体30(30a〜30d)が収容する液体を液体噴射部36に供給可能に液体収容体30と液体噴射部36とを接続する液体供給流路46の一部を構成している。 The intermediate reservoir 45 temporarily stores each liquid supplied by the liquid supply tube 42 before supplying the liquid to the liquid ejecting unit 36. In FIG. 2 and the like, although the liquid supply tube 42 is a plurality (four in the present embodiment) of the plurality (four in the present embodiment) of liquid containers 30a to 30d, the number of the liquid containers 30a to 30d is four. For simplification of the drawing, three of the four are omitted and only one is drawn. It is preferable that the plurality of liquid supply tubes 42 be configured as multiple tubes integrally formed with each other. The liquid supply tube 42 forms a part of the liquid supply flow path 46 that connects the liquid container 30 and the liquid ejecting unit 36 so that the liquid contained in the liquid container 30 (30 a to 30 d) can be supplied to the liquid ejecting unit 36. I am configuring.

また、キャリッジ34の接続部44から導出し一端側が液体噴射部36などに接続された信号線47の他端と、一端側が液体供給ユニット29に接続された信号線48の他端とは、別々のコネクター49を介して制御部50に接続されている。 Further, the other end of the signal line 47, which is led out from the connection part 44 of the carriage 34 and has one end side connected to the liquid ejecting part 36 and the like, and the other end of the signal line 48 whose one end side is connected to the liquid supply unit 29 are separate. It is connected to the control unit 50 via the connector 49.

次に、液体供給ユニット29について説明する。図2に示すように、液体供給ユニット29は、複数の液体収容体30a〜30dと、液体収容体30a〜30dに接続された流路を内部に形成した流路形成部材51と、複数の液体収容体30a〜30dが隣合うように並べた状態で流路形成部材51と共にセットされるセット部材52(図2参照)とを含んで構成されている。そして、液体供給ユニット29は、筐体14内のホルダー53(保持部材)に対して所定位置に位置決めされた状態で保持される。 Next, the liquid supply unit 29 will be described. As shown in FIG. 2, the liquid supply unit 29 includes a plurality of liquid containers 30a to 30d, a flow path forming member 51 having therein a flow path connected to the liquid containers 30a to 30d, and a plurality of liquids. It is configured to include a set member 52 (see FIG. 2) that is set together with the flow path forming member 51 in a state where the containers 30a to 30d are arranged side by side. Then, the liquid supply unit 29 is held in a state of being positioned at a predetermined position with respect to the holder 53 (holding member) in the housing 14.

複数の液体収容体30a〜30dは、略直方体状のインクタンクである。複数の液体収容体30a〜30dには、ブラック、シアン、マゼンタおよびイエローの異なる複数種(複数色)の液体がそれぞれ収容される。なお、図2の例では、複数の液体収容体30a〜30dのうち一番外側に配置された大容量タイプのブラックの液体が収容される液体収容体30aが、他の3つの液体収容体30b〜30dよりも厚い大サイズとなっているが、各液体収容体30a〜30dが全て同じサイズ(厚さ)であってもよい。 The plurality of liquid containers 30a to 30d are ink tanks having a substantially rectangular parallelepiped shape. A plurality of liquids (a plurality of colors) different in black, cyan, magenta, and yellow are stored in the plurality of liquid containers 30a to 30d, respectively. In addition, in the example of FIG. 2, the liquid container 30a in which the large-capacity type black liquid is arranged on the outermost side of the plurality of liquid containers 30a to 30d is the other three liquid containers 30b. Although the liquid containers 30a to 30d have a large size thicker than ˜30d, all the liquid containers 30a to 30d may have the same size (thickness).

図2に示すように、カバー部材26が閉じ位置から開き位置に回動すると、液体収容体30の注入口54が外部に露出する。カバー部材26は開き位置にある場合、液体収容体30の注入口54の軸線とほぼ平行な所定角度だけ水平面から傾けた斜めの姿勢に保持される。注入口54はゴム等の栓55によって通常時には閉栓されている。例えばユーザーはカバー部材26の裏面に液体ボトル100(液体注入部材)(図6参照)を載せて、液体ボトル100の注出口部を注入口54に挿入し、液体ボトル100から液体収容体30に液体を注入する。 As shown in FIG. 2, when the cover member 26 is rotated from the closed position to the open position, the injection port 54 of the liquid container 30 is exposed to the outside. When the cover member 26 is in the open position, the cover member 26 is held in an inclined posture inclined from the horizontal plane by a predetermined angle substantially parallel to the axis of the injection port 54 of the liquid container 30. The inlet 54 is normally closed by a rubber stopper 55. For example, the user puts the liquid bottle 100 (liquid injection member) (see FIG. 6) on the back surface of the cover member 26, inserts the spout of the liquid bottle 100 into the injection port 54, and the liquid bottle 100 is transferred to the liquid container 30. Inject liquid.

次に、図3を参照して、液体噴射部36が噴射する液体の種類毎に設けられる液体供給機構60について詳しく説明する。
図3に示すように、液体供給機構60は、液体収容体30が収容する液体を液体噴射部36に供給可能に液体収容体30と液体噴射部36とを接続する液体供給流路46を備えている。液体供給流路46は、液体収容体30と液体噴射部36との間となる位置に、液体を貯留可能な中間貯留部61を有する中間貯留体45を接続可能な中間貯留体接続部62を有している。
Next, the liquid supply mechanism 60 provided for each type of liquid ejected by the liquid ejecting unit 36 will be described in detail with reference to FIG.
As shown in FIG. 3, the liquid supply mechanism 60 includes a liquid supply channel 46 that connects the liquid container 30 and the liquid ejecting unit 36 so that the liquid contained in the liquid container 30 can be supplied to the liquid ejecting unit 36. ing. The liquid supply flow path 46 has an intermediate storage body connecting portion 62 capable of connecting the intermediate storage body 45 having the intermediate storage portion 61 capable of storing the liquid, at a position between the liquid container 30 and the liquid ejecting portion 36. Have

中間貯留体45は、キャリッジ34の上側に設けられた中間貯留体接続部62に対して着脱可能に装着されるサブタンクとして機能する。本実施形態の中間貯留体45は、液体噴射部36内の液体の圧力(液圧)を所定範囲の設定圧に調整しつつ液体噴射部36へ液体を供給可能な圧力調整機構63を内蔵する。中間貯留体接続部62は、キャリッジ34の上側に突設された導入針部64と供給針部65とを含む。導入針部64と供給針部65は、先端部が針形状でゴム等の弾性部材に刺し込み可能でその内部に液体が流動可能な流路を有する管状部材からなる。なお、中間貯留体45の詳細な構成は後述する。 The intermediate storage body 45 functions as a sub-tank that is detachably attached to the intermediate storage body connecting portion 62 provided on the upper side of the carriage 34. The intermediate reservoir 45 of the present embodiment has a built-in pressure adjusting mechanism 63 capable of supplying the liquid to the liquid ejecting unit 36 while adjusting the pressure (liquid pressure) of the liquid in the liquid ejecting unit 36 to a set pressure within a predetermined range. .. The intermediate storage body connecting portion 62 includes an introduction needle portion 64 and a supply needle portion 65 that are provided to project above the carriage 34. The introduction needle portion 64 and the supply needle portion 65 are tubular members each having a needle-shaped tip and capable of being pierced into an elastic member such as rubber and having therein a flow passage through which a liquid can flow. The detailed configuration of the intermediate storage body 45 will be described later.

液体収容体30と液体噴射部36とを接続する液体供給流路46は、中間貯留体接続部62(詳しくは導入針部64)より上流側となる上流側液体供給流路66と、中間貯留体接続部62(詳しくは供給針部65)より下流側となる下流側液体供給流路67とを含む。本実施形態では、中間貯留体接続部62に接続した中間貯留体45の中間貯留部61内の液体を用いて液体供給流路46を液体で充填する液体充填方法を採用する。この液体充填方法には、中間貯留体接続部62に接続された中間貯留体45から上流側の液体収容体30へ向かって流動する液体によって上流側液体供給流路66に液体を充填する第1充填工程と、中間貯留体45から下流側の液体噴射部36に向かって流動する液体によって下流側液体供給流路67に液体を充填する第2充填工程とが含まれる。 The liquid supply flow path 46 that connects the liquid container 30 and the liquid ejecting unit 36 includes an upstream liquid supply flow path 66 that is on the upstream side of the intermediate reservoir connection unit 62 (specifically, the introduction needle portion 64), and the intermediate reservoir. It includes a downstream liquid supply flow channel 67 which is on the downstream side of the body connecting portion 62 (specifically, the supply needle portion 65). In this embodiment, a liquid filling method of filling the liquid supply flow path 46 with a liquid by using the liquid in the intermediate storage portion 61 of the intermediate storage body 45 connected to the intermediate storage body connecting portion 62 is adopted. In this liquid filling method, the first side is filled with the liquid by the liquid flowing from the intermediate reservoir 45 connected to the intermediate reservoir connection portion 62 toward the upstream liquid container 30. The filling step and the second filling step of filling the downstream liquid supply flow path 67 with the liquid by the liquid flowing from the intermediate reservoir 45 toward the downstream liquid ejecting unit 36 are included.

図3に示すように、液体収容体30は液体を収容可能な液体収容室57を有している。液体収容体30は、液体収容室57内に外部からインクを注入可能とする前述の注入口54と、液体収容室57内の液体を上流側液体供給流路66側へ供給する供給口部68と、液体収容室57内の液体が収容されない領域(つまり気体が収容される領域)を大気と連通させる大気連通孔69とを有している。注入口54は栓55によって通常時は閉栓されている。液体収容体30がホルダー53(図2参照)に装着された状態では、図3に示す供給口部68は流路形成部材51内の不図示の流路を通じて液体供給チューブ42の上流側端部と接続される。液体供給チューブ42の下流側端部は前述の導入針部64の基端部に接続されている。よって、上流側液体供給流路66は、流路形成部材51の内部に形成された流路、液体供給チューブ42および導入針部64の流路を含む。なお、液体収容室57内には、供給口部68の近傍に液面を局所的に高くする液体収容領域を区画するガイド板70が設けられている。このため、液体収容室57に収容された液体の液面がガイド板70の下端を下側へ超えないうちは、ガイド板70で区画された液体収容領域の液面が供給口部68よりも上方に高く保持され、液体収容体30の液体がエンドになるまで供給口部68からの液体の供給が可能になっている。 As shown in FIG. 3, the liquid container 30 has a liquid storage chamber 57 that can store a liquid. The liquid container 30 has the above-described inlet 54 that allows the ink to be injected into the liquid container 57 from the outside, and the supply port portion 68 that supplies the liquid in the liquid container 57 to the upstream liquid supply channel 66 side. And an atmosphere communication hole 69 for communicating the region in the liquid storage chamber 57 where the liquid is not stored (that is, the region where the gas is stored) with the atmosphere. The inlet 54 is normally closed by a stopper 55. When the liquid container 30 is attached to the holder 53 (see FIG. 2), the supply port portion 68 shown in FIG. 3 has the upstream end portion of the liquid supply tube 42 through the flow passage (not shown) in the flow passage forming member 51. Connected with. The downstream end of the liquid supply tube 42 is connected to the base end of the above-mentioned introduction needle portion 64. Therefore, the upstream liquid supply flow path 66 includes the flow path formed inside the flow path forming member 51, the liquid supply tube 42, and the flow path of the introduction needle portion 64. A guide plate 70 is provided in the liquid storage chamber 57 in the vicinity of the supply port 68 to define a liquid storage region that locally raises the liquid surface. Therefore, as long as the liquid level of the liquid stored in the liquid storage chamber 57 does not exceed the lower end of the guide plate 70 downward, the liquid level of the liquid storage area defined by the guide plate 70 is lower than that of the supply port 68. The liquid is held high upward, and the liquid can be supplied from the supply port 68 until the liquid in the liquid container 30 reaches the end.

また、図3に示すように、供給針部65の基端部は、キャリッジ34の下側に配置された液体噴射部36のノズル71と連通する液室72と連通している。よって、下流側液体供給流路67は、供給針部65の流路、液体噴射部36の液室72およびノズル71の一部を含む。そして、液体を充填する対象となる液体供給流路46は、液体収容体30の供給口部68から液体噴射部36のノズル71までの流路によって構成される。 Further, as shown in FIG. 3, the base end portion of the supply needle portion 65 communicates with the liquid chamber 72 that communicates with the nozzle 71 of the liquid ejecting portion 36 disposed on the lower side of the carriage 34. Therefore, the downstream liquid supply flow path 67 includes the flow path of the supply needle part 65, the liquid chamber 72 of the liquid ejecting part 36, and a part of the nozzle 71. The liquid supply flow path 46 to be filled with the liquid is composed of a flow path from the supply port 68 of the liquid container 30 to the nozzle 71 of the liquid ejecting unit 36.

上流側液体供給流路66には、上流側から順番に開閉弁73と供給ポンプ74とが設けられている。供給ポンプ74は、駆動されると、液体収容体30側から中間貯留体45を経由して液体噴射部36へ向かう供給方向へ液体を圧送する。供給ポンプ74は駆動停止状態で供給ポンプ74の両側で上流側液体供給流路66を連通させるレリース状態への切換えが可能となっている。なお、供給ポンプ74は、チューブポンプ等の回転式ポンプやダイアフラムポンプ等の往復動式ポンプを使用することができる。 The upstream liquid supply passage 66 is provided with an opening/closing valve 73 and a supply pump 74 in order from the upstream side. When driven, the supply pump 74 pumps the liquid in the supply direction from the liquid container 30 side to the liquid ejecting unit 36 via the intermediate reservoir 45. The supply pump 74 can be switched to a release state in which the upstream liquid supply passage 66 is communicated on both sides of the supply pump 74 in a drive stopped state. The supply pump 74 may be a rotary pump such as a tube pump or a reciprocating pump such as a diaphragm pump.

図3に示すように、液体噴射装置12の筐体14内におけるホームポジションHP(図2参照)に相当する位置には、液体噴射部36のメンテナンスを行うメンテナンス装置75が配置されている。メンテナンス装置75は、液体噴射部36に対して接近と離間とが可能な方向に相対移動可能なキャップ76と、キャップ76の下部に接続された流路77と、流路77を通じてキャップ76内の空気を吸引するために駆動される吸引ポンプ78とを備えている。吸引ポンプ78は駆動停止状態で流路77を大気と連通させるレリース状態への切換えが可能となっている。また、流路77における吸引ポンプ78とキャップ76との間には方向切換弁79が設けられている。方向切換弁79は吸引ポンプ78と接続される方向をキャップ76と気体流路80との間で切り換える。方向切換弁79に一端が接続された気体流路80の他端は流路形成部材51の流路を経由して液体収容体30の大気連通孔69に接続されている。また、気体流路80の途中には大気開放弁81が設けられている。 As shown in FIG. 3, a maintenance device 75 that performs maintenance of the liquid ejecting unit 36 is arranged at a position corresponding to the home position HP (see FIG. 2) in the housing 14 of the liquid ejecting device 12. The maintenance device 75 includes a cap 76 capable of relatively moving in a direction in which it can approach and separate from the liquid ejecting unit 36, a flow passage 77 connected to a lower portion of the cap 76, and a flow passage 77 to prevent the inside of the cap 76. And a suction pump 78 that is driven to suck air. The suction pump 78 can be switched to a release state in which the flow passage 77 is in communication with the atmosphere while the driving is stopped. Further, a direction switching valve 79 is provided between the suction pump 78 and the cap 76 in the flow path 77. The direction switching valve 79 switches the direction in which the suction pump 78 is connected between the cap 76 and the gas passage 80. The other end of the gas flow path 80, one end of which is connected to the direction switching valve 79, is connected to the atmosphere communication hole 69 of the liquid container 30 via the flow path of the flow path forming member 51. Further, an air release valve 81 is provided in the middle of the gas flow path 80.

方向切換弁79は、接続方向としてキャップ76を選択するメンテナンス位置と、気体流路80を選択する気体流路選択位置とに切り換えられる。大気開放弁81は、気体流路80を大気に開放する大気開放位置と大気に開放しない非開放位置とに切り換えられる。開閉弁73、方向切換弁79、大気開放弁81、供給ポンプ74および吸引ポンプ78は、図2に示す制御部50により制御される。なお、キャップ76と液体噴射部36とを接近と離間が可能な方向に相対移動させる不図示の相対移動機構の動力源も、制御部50により駆動制御される。相対移動機構は、例えばキャップ76の昇降機構またはキャリッジ34の昇降機構により構成される。 The direction switching valve 79 is switched between a maintenance position that selects the cap 76 as a connection direction and a gas flow path selection position that selects the gas flow path 80. The atmosphere opening valve 81 is switched between an atmosphere opening position that opens the gas flow path 80 to the atmosphere and a non-opening position that does not open the atmosphere. The on-off valve 73, the direction switching valve 79, the atmosphere opening valve 81, the supply pump 74 and the suction pump 78 are controlled by the control unit 50 shown in FIG. The controller 50 also drives and controls a power source of a relative movement mechanism (not shown) that relatively moves the cap 76 and the liquid ejecting unit 36 in a direction in which they can approach and separate from each other. The relative movement mechanism is composed of, for example, a lifting mechanism for the cap 76 or a lifting mechanism for the carriage 34.

次に図3を参照して、中間貯留体45の詳細な構成を説明する。図3に示すように、中間貯留体45は、中間貯留部61として供給室82と圧力室83とを備えている。供給室82と圧力室83との間には圧力調整機構63が配置されている。圧力調整機構63は、液体噴射部36の背圧を決める圧力室83の液圧を所定範囲の設定圧に調整する機能を有する。 Next, a detailed configuration of the intermediate storage body 45 will be described with reference to FIG. As shown in FIG. 3, the intermediate reservoir 45 includes a supply chamber 82 and a pressure chamber 83 as the intermediate reservoir 61. A pressure adjusting mechanism 63 is arranged between the supply chamber 82 and the pressure chamber 83. The pressure adjusting mechanism 63 has a function of adjusting the hydraulic pressure of the pressure chamber 83 that determines the back pressure of the liquid ejecting unit 36 to a set pressure within a predetermined range.

中間貯留体45は、供給室82の外側の一面に第1ダイアフラム84を有し、第1ダイアフラム84は外圧(大気圧)と内圧(液圧)との差圧に応じて変位する。また、中間貯留体45は、圧力室83の第1ダイアフラム84とは反対側となる外側の一面に第2ダイアフラム85を有し、その第2ダイアフラム85は外圧(大気圧)と内圧(液圧)との差圧に応じて変位する。 The intermediate reservoir 45 has a first diaphragm 84 on one surface outside the supply chamber 82, and the first diaphragm 84 is displaced according to the differential pressure between the external pressure (atmospheric pressure) and the internal pressure (liquid pressure). Further, the intermediate storage body 45 has a second diaphragm 85 on one surface on the outer side of the pressure chamber 83 opposite to the first diaphragm 84, and the second diaphragm 85 has an external pressure (atmospheric pressure) and an internal pressure (hydraulic pressure). ) Displaces according to the pressure difference between

中間貯留体45は、供給室82の端部に導入針部64が接続される導入口部86を有している。供給室82は、導入口部86に導入針部64が接続された状態において上流側液体供給流路66と連通する。また、中間貯留体45は、圧力室83の端部に供給針部65が接続される導出口部87を有している。圧力室83は、導出口部87に供給針部65が接続された状態において液体噴射部36内の液室72を含む下流側液体供給流路67と連通する。 The intermediate reservoir 45 has an introduction port portion 86 to which the introduction needle portion 64 is connected at the end of the supply chamber 82. The supply chamber 82 communicates with the upstream liquid supply flow path 66 with the introduction needle portion 64 connected to the introduction port portion 86. Further, the intermediate storage body 45 has an outlet port portion 87 to which the supply needle portion 65 is connected at the end portion of the pressure chamber 83. The pressure chamber 83 communicates with the downstream liquid supply flow path 67 including the liquid chamber 72 in the liquid ejecting unit 36 in a state where the supply needle portion 65 is connected to the outlet 87.

次に図3を参照して圧力調整機構63の構成を説明する。圧力調整機構63は、一例として、供給室82と圧力室83との間に設けられた差圧式の圧力調整弁(例えば減圧弁)からなる。圧力調整機構63は、供給室82と圧力室83との隔壁45aに形成された連通孔88に軸部90が挿通された弁体89と、弁体89を供給室82から圧力室83へ向かう方向へ付勢するばね91とを備える。弁体89の軸部90のうち圧力室83内に突出した先端が第2ダイアフラム85の内面側に固定された当接部材92に当接している。また、供給室82と圧力室83との間にはフィルター93が設けられ、圧力調整機構63が開弁したときに液体がフィルター93を通過することにより液体から気泡等の異物が除去される。 Next, the configuration of the pressure adjusting mechanism 63 will be described with reference to FIG. The pressure adjusting mechanism 63 includes, for example, a differential pressure type pressure adjusting valve (for example, a pressure reducing valve) provided between the supply chamber 82 and the pressure chamber 83. The pressure adjusting mechanism 63 directs the valve body 89 from the supply chamber 82 to the pressure chamber 83, and the valve body 89 in which the shaft portion 90 is inserted into the communication hole 88 formed in the partition wall 45 a between the supply chamber 82 and the pressure chamber 83. And a spring 91 that biases in the direction. A tip portion of the shaft portion 90 of the valve body 89 protruding into the pressure chamber 83 is in contact with a contact member 92 fixed to the inner surface side of the second diaphragm 85. Further, a filter 93 is provided between the supply chamber 82 and the pressure chamber 83, and when the pressure adjusting mechanism 63 opens, the liquid passes through the filter 93 to remove foreign matters such as bubbles from the liquid.

弁体89は、ばね91の付勢力と、第2ダイアフラム85の両面にかかる液圧と大気圧との差圧等に応じて移動する。圧力調整機構63は、液体噴射部36で液体が消費されて圧力室83の液圧が設定圧を下回ると、弁体89がばね91の付勢力に抗して開弁側(図3における左側)へ移動して開弁する。この開弁により供給室82から液体が連通孔88を通じて圧力室83へ供給され、圧力室83の液圧が設定圧に達すると、弁体89が閉弁側(図3における右側)へ移動して閉弁する。 The valve body 89 moves according to the biasing force of the spring 91, the pressure difference between the hydraulic pressure applied to both surfaces of the second diaphragm 85, and the atmospheric pressure, and the like. In the pressure adjusting mechanism 63, when the liquid is consumed in the liquid ejecting unit 36 and the hydraulic pressure in the pressure chamber 83 falls below the set pressure, the valve body 89 resists the urging force of the spring 91 to open the valve (the left side in FIG. 3). ) To open the valve. By this valve opening, liquid is supplied from the supply chamber 82 to the pressure chamber 83 through the communication hole 88, and when the hydraulic pressure in the pressure chamber 83 reaches the set pressure, the valve body 89 moves to the valve closing side (right side in FIG. 3). To close the valve.

また、中間貯留体接続部62に接続される前の中間貯留体45は、中間貯留部61の外側空間より圧力が高くなるように中間貯留部61に予め液体が充填された状態にある。供給室82は、充填された液体により第1ダイアフラム84が外側へ膨出した状態にある。供給室82内の液体は、外側へ膨出した第1ダイアフラム84の弾性復元力によって中間貯留部61の外側空間の大気圧よりも高い圧力に加圧された状態にある。また、圧力室83の液圧は、所定範囲の設定圧または設定圧となる液量よりも多くの液体が充填されて設定圧よりも高い圧力値となっている。そして、液体収容体30が大気に開放された注ぎ足しタイプの開放系のタンクであるのに対して、中間貯留体45は大気に開放されない状態で中間貯留部61に液体のみが充填された密閉系のサブタンクとなっている。 Further, the intermediate storage body 45 before being connected to the intermediate storage body connecting portion 62 is in a state in which the intermediate storage portion 61 is preliminarily filled with liquid so that the pressure becomes higher than the outer space of the intermediate storage portion 61. The supply chamber 82 is in a state where the first diaphragm 84 bulges outward due to the filled liquid. The liquid in the supply chamber 82 is in a state of being pressurized to a pressure higher than the atmospheric pressure of the outer space of the intermediate storage portion 61 by the elastic restoring force of the first diaphragm 84 that bulges outward. In addition, the hydraulic pressure of the pressure chamber 83 is set to a predetermined range or is filled with a larger amount of liquid than the set amount, and has a pressure value higher than the set pressure. Further, while the liquid container 30 is an open-type tank of a refilling type that is open to the atmosphere, the intermediate reservoir 45 is a hermetically sealed container in which the intermediate reservoir 61 is filled with only liquid in a state where it is not exposed to the atmosphere. It is a sub tank of the system.

また、図3に示すように、第1ダイアフラム84の外側の位置に、第1ダイアフラム84の内側に固定された当接部材94と対応する外面を押すことが可能な押圧部材95を配置することが好ましい。押圧部材95が供給室82を外側から押すことにより供給室82内の液体を加圧可能となっている。特に本例では、供給室82内の液体を加圧する方向への第1ダイアフラム84の弾性復元力が無くなっても、押圧部材95が第1ダイアフラム84を外側から押すことにより供給室82内の液体を加圧することが可能となっている。 Further, as shown in FIG. 3, a pressing member 95 capable of pressing the outer surface corresponding to the contact member 94 fixed inside the first diaphragm 84 is arranged at a position outside the first diaphragm 84. Is preferred. The pressing member 95 pushes the supply chamber 82 from the outside so that the liquid in the supply chamber 82 can be pressurized. In particular, in this example, even if the elastic restoring force of the first diaphragm 84 in the direction of pressurizing the liquid in the supply chamber 82 disappears, the pressing member 95 pushes the first diaphragm 84 from the outside so that the liquid in the supply chamber 82 is It is possible to pressurize.

また、液体噴射装置12は、中間貯留体接続部62に接続された中間貯留体45の中間貯留部61が貯留する液体を、上流側液体供給流路66内に流動させるために液体流動機構を備える。液体流動機構として主に3つがある。1つ目は、上流側液体供給流路66より重力方向において上方となる位置に中間貯留体接続部62を配置し、高低差(水頭差)を利用して液体を上流側液体供給流路66内に流動させる液体流動機構(水頭差流動機構)である。 Further, the liquid ejecting apparatus 12 has a liquid flow mechanism for causing the liquid stored in the intermediate storage portion 61 of the intermediate storage body 45 connected to the intermediate storage body connecting portion 62 to flow into the upstream liquid supply passage 66. Prepare There are mainly three liquid flow mechanisms. The first is to arrange the intermediate storage body connecting portion 62 at a position above the upstream liquid supply passage 66 in the gravity direction, and use the height difference (head difference) to transfer the liquid to the upstream liquid supply passage 66. It is a liquid flow mechanism (head difference flow mechanism) that causes the liquid to flow inside.

2つ目は、液体流動機構として、中間貯留体接続部62に接続された中間貯留体45の中間貯留部61内の液体を加圧する加圧機構96を備えている。加圧機構96には、中間貯留部61に液体を外部空間よりも高い圧力で加圧した状態で貯留した第1の加圧機構と、中間貯留部61内の液体を中間貯留体45の外部から外力で加圧(例えば押圧)する第2の加圧機構とが含まれる。なお、図3において、供給室82内の液体を加圧する可撓膜の一例として設けられた第1ダイアフラム84が第1の加圧機構の一例に相当し、供給室82内の液体を外部から外力で押圧可能な押圧部材95が第2の加圧機構の一例に相当する。 The second is provided with a pressurizing mechanism 96 for pressurizing the liquid in the intermediate storage part 61 of the intermediate storage body 45 connected to the intermediate storage body connection part 62 as the liquid flow mechanism. The pressurizing mechanism 96 includes a first pressurizing mechanism that stores the liquid in the intermediate reservoir 61 in a state of being pressurized with a pressure higher than the external space, and a liquid in the intermediate reservoir 61 outside the intermediate reservoir 45. And a second pressurizing mechanism for pressurizing (for example, pressing) with an external force. Note that, in FIG. 3, the first diaphragm 84 provided as an example of a flexible film that pressurizes the liquid in the supply chamber 82 corresponds to an example of the first pressurizing mechanism, and the liquid in the supply chamber 82 is supplied from the outside. The pressing member 95 that can be pressed by an external force corresponds to an example of the second pressing mechanism.

3つ目は、液体流動機構として、上流側液体供給流路66内を減圧する減圧機構97を備える構成である。本例では、液体収容体30の液体収容室57内を減圧することにより、上流側液体供給流路66内を減圧し、液体を上流側液体供給流路66内に流動させる減圧機構97を採用する。一例として、ポンプで液体収容体30の液体収容室57を減圧する。特に本例では、メンテナンス装置75の吸引ポンプ78を利用して液体収容室57を減圧する。具体的には、方向切換弁79を吸引ポンプ78が気体流路80に接続される気体流路選択位置に切り換えるとともに大気開放弁81を非大気開放位置に切り換えたうえで、吸引ポンプ78を駆動して気体流路80を通じて液体収容室57内の空気を吸引することにより液体収容室57を減圧する。 The third is a configuration including a decompression mechanism 97 for decompressing the inside of the upstream liquid supply passage 66 as a liquid flow mechanism. In this example, a pressure reducing mechanism 97 that reduces the pressure inside the liquid storage chamber 57 of the liquid container 30 to reduce the pressure inside the upstream liquid supply passage 66 and causes the liquid to flow into the upstream liquid supply passage 66 is adopted. To do. As an example, the pressure of the liquid storage chamber 57 of the liquid storage body 30 is reduced by a pump. Particularly in this example, the suction pump 78 of the maintenance device 75 is used to depressurize the liquid storage chamber 57. Specifically, the suction pump 78 is driven after switching the direction switching valve 79 to a gas flow path selecting position where the suction pump 78 is connected to the gas flow path 80 and switching the atmosphere opening valve 81 to the non-atmosphere opening position. Then, the liquid storage chamber 57 is depressurized by sucking the air in the liquid storage chamber 57 through the gas flow path 80.

次に、液体噴射装置12の作用を説明する。まず図3〜図7を参照して、ユーザーが液体噴射装置12を初めて使用するときに行われる液体充填動作(初期充填動作)を説明する。なお、複数の液体収容体30に接続された異なる種類(例えば色種)の液体が流動する複数の液体供給流路46にそれぞれ液体を充填するが、複数の液体供給流路46への液体充填動作は基本的に同じなので、以下の説明では、そのうち1つの液体供給流路46への液体充填動作について説明する。また、図4〜図7では、液体が充填等されている領域を網掛け領域で示している。 Next, the operation of the liquid ejecting apparatus 12 will be described. First, the liquid filling operation (initial filling operation) performed when the user uses the liquid ejecting apparatus 12 for the first time will be described with reference to FIGS. 3 to 7. It should be noted that although a plurality of liquid supply channels 46 connected to the plurality of liquid containers 30 and in which liquids of different types (for example, color types) flow are filled with liquid, the liquid filling channels 46 are filled with liquid. Since the operation is basically the same, the liquid filling operation into one of the liquid supply flow paths 46 will be described in the following description. Further, in FIGS. 4 to 7, a region filled with the liquid or the like is shown by a shaded region.

さて、ユーザーが液体噴射装置12を初めて使用するときは、液体供給流路46内にはまだ液体が充填されておらず初期的に空気が充填された状態にある。ユーザーは液体供給流路46内に液体を充填させる初期充填作業を行う。まずユーザーは、液体噴射装置12の筐体14の蓋部を兼ねる画像読取装置13を、ヒンジ18を支点として所定開度まで開く。すると、筐体14内におけるキャリッジ34と共にその上面に突設された中間貯留体接続部62が露出する。 Now, when the user uses the liquid ejecting apparatus 12 for the first time, the liquid supply passage 46 is not yet filled with the liquid but is initially in the state of being filled with air. The user performs an initial filling operation for filling the liquid in the liquid supply flow path 46. First, the user opens the image reading device 13, which also serves as the lid of the housing 14 of the liquid ejecting apparatus 12, to a predetermined opening with the hinge 18 as a fulcrum. Then, the carriage 34 in the housing 14 and the intermediate storage body connecting portion 62 protruding from the upper surface thereof are exposed.

ユーザーは、初期充填を行うときは、操作部16を操作して液体充填を行う旨を液体噴射装置12に指示する。制御部50は、操作部16からの操作信号に基づく液体充填を行う旨の指示を受け付けると、液体充填準備動作を行う。制御部50は、方向切換弁79を大気開放選択位置に切り換えるとともに大気開放弁81を非大気開放位置に切り換える。この結果、吸引ポンプ78は気体流路80を通じて液体収容室57と連通する。また、制御部50は、開閉弁73を開弁状態にするとともに供給ポンプ74をレリース状態とする。この結果、中間貯留体接続部62の導入針部64と液体収容室57とが上流側液体供給流路66を通じて連通する。さらに、制御部50は、相対移動機構の動力源を駆動し、キャップ76と液体噴射部36とを互いが接近する方向へ相対移動させてキャップ76と液体噴射部36とに囲まれた閉空間を形成する。このときキャップ76は液体噴射部36のノズル71から漏れ出た液体を受け止め可能なキャッピング位置にある。また、キャップ76内は大気開放されていない。 When performing the initial filling, the user operates the operation unit 16 to instruct the liquid ejecting apparatus 12 to perform the liquid filling. When the control unit 50 receives an instruction to perform liquid filling based on the operation signal from the operation unit 16, the control unit 50 performs the liquid filling preparation operation. The control unit 50 switches the direction switching valve 79 to the atmosphere opening selection position and switches the atmosphere opening valve 81 to the non-atmosphere opening position. As a result, the suction pump 78 communicates with the liquid storage chamber 57 through the gas passage 80. Further, the control unit 50 sets the open/close valve 73 to the open state and sets the supply pump 74 to the release state. As a result, the introduction needle portion 64 of the intermediate storage body connecting portion 62 and the liquid storage chamber 57 communicate with each other through the upstream liquid supply flow path 66. Further, the control unit 50 drives the power source of the relative movement mechanism to relatively move the cap 76 and the liquid ejecting unit 36 in a direction in which the cap 76 and the liquid ejecting unit 36 approach each other, and thereby the closed space surrounded by the cap 76 and the liquid ejecting unit 36. To form. At this time, the cap 76 is in a capping position capable of receiving the liquid leaking from the nozzle 71 of the liquid ejecting unit 36. The inside of the cap 76 is not open to the atmosphere.

中間貯留体接続部62に接続される前の中間貯留体45は、図3に示すように第1ダイアフラム84が外側へ膨出するほどの体積の液体が収容され、供給室82内の液体は、加圧機構96として機能する第1ダイアフラム84の弾性復元力によって大気圧よりも高い圧力に加圧されている。また、圧力室83に貯留された液体が設定圧または設定圧を超える液圧である場合は、圧力調整機構63は閉弁している。また、中間貯留体45の導入口部86と導出口部87は、中間貯留体接続部62に接続される前においては共に不図示の弾性体または弁機構により閉塞されている。 As shown in FIG. 3, the intermediate storage body 45 before being connected to the intermediate storage body connecting portion 62 stores a liquid having a volume such that the first diaphragm 84 bulges outward, and the liquid in the supply chamber 82 is The elastic restoring force of the first diaphragm 84 functioning as the pressurizing mechanism 96 pressurizes the pressure higher than the atmospheric pressure. Further, when the liquid stored in the pressure chamber 83 has a set pressure or a liquid pressure exceeding the set pressure, the pressure adjusting mechanism 63 is closed. Further, the inlet 86 and the outlet 87 of the intermediate storage body 45 are both closed by an elastic body or a valve mechanism (not shown) before being connected to the intermediate storage body connecting portion 62.

ユーザーは、この中間貯留体45を中間貯留体接続部62に接続する。この接続の結果、中間貯留体45の導入口部86と導出口部87に、導入針部64と供給針部65がそれぞれ刺し込まれ、供給室82が導入針部64を通じて上流側液体供給流路66と連通し、かつ圧力室83が導出口部87を通じて下流側液体供給流路67と連通する。 The user connects the intermediate storage body 45 to the intermediate storage body connecting portion 62. As a result of this connection, the introduction needle portion 64 and the supply needle portion 65 are inserted into the introduction opening portion 86 and the discharge opening portion 87 of the intermediate reservoir 45, respectively, and the supply chamber 82 passes through the introduction needle portion 64 and the upstream side liquid supply flow. The pressure chamber 83 communicates with the passage 66, and the pressure chamber 83 communicates with the downstream liquid supply passage 67 through the outlet 87.

この接続状態において中間貯留体45は、上流側液体供給流路66よりも重力方向において上方となる位置に配置される。この結果、図4に示すように、中間貯留体接続部62に接続された中間貯留体45の供給室82に貯留された液体は、水頭差を利用した液体流動機構(水頭差流動機構)によって上流側液体供給流路66内を液体収容体30に向かって流動する。 In this connected state, the intermediate reservoir 45 is arranged at a position above the upstream liquid supply flow path 66 in the gravity direction. As a result, as shown in FIG. 4, the liquid stored in the supply chamber 82 of the intermediate storage body 45 connected to the intermediate storage body connecting portion 62 is processed by the liquid flow mechanism (head difference flow mechanism) using the head difference. The liquid flows in the upstream liquid supply passage 66 toward the liquid container 30.

また、供給室82に貯留された液体は、第1ダイアフラム84の弾性復元力を利用した液体流動機構(第1の加圧機構)により大気圧よりも高い圧力に加圧されているので、その加圧力によって供給室82に貯留された液体は導入針部64を通って上流側液体供給流路66内を液体収容体30に向かって流動する。 Further, the liquid stored in the supply chamber 82 is pressurized to a pressure higher than atmospheric pressure by the liquid flow mechanism (first pressurizing mechanism) utilizing the elastic restoring force of the first diaphragm 84, The liquid stored in the supply chamber 82 by the pressing force flows toward the liquid container 30 through the introduction needle portion 64 and inside the upstream liquid supply flow path 66.

そして、上流側液体供給流路66内への液体の流動が進み、中間貯留部61内の液体が減少すると中間貯留部61内が負圧になり液体の流動が止まる。このとき、供給室82の液圧が負圧になっても、弁体89の供給室82側の受圧面積が比較的小さいことから、圧力調整機構63は開弁しない。仮に圧力調整機構63が開弁すると、圧力室83内の液圧が設定圧(負圧)よりも高くなって液体噴射部36のノズル71から液体が漏れ出る場合もありうるが、キャップ76が液体噴射部36に接近したキャッピング位置に配置されているため、ノズル71から漏れ出た液体はキャップ76が受け止める。 Then, when the flow of the liquid into the upstream liquid supply channel 66 progresses and the amount of the liquid in the intermediate storage 61 decreases, the inside of the intermediate storage 61 becomes negative pressure and the flow of the liquid stops. At this time, even if the hydraulic pressure in the supply chamber 82 becomes negative, the pressure adjusting mechanism 63 does not open because the pressure receiving area of the valve body 89 on the supply chamber 82 side is relatively small. If the pressure adjusting mechanism 63 opens, the liquid pressure in the pressure chamber 83 may become higher than the set pressure (negative pressure), and the liquid may leak from the nozzle 71 of the liquid ejecting unit 36. Since the cap 76 is arranged at the capping position close to the liquid ejecting unit 36, the liquid leaking from the nozzle 71 is received by the cap 76.

また、制御部50は、上流側液体供給流路66の液圧を検知または中間貯留体45の中間貯留体接続部62への接続完了を検知する不図示のセンサーまたはタイマーに基づき上流側液体供給流路66内の液体の充填が開始され、かつその液体の充填が終わっていない状態にあることを検知する。すると、制御部50は、不図示のアクチュエーターを駆動して押圧部材95を、第1ダイアフラム84を外側から押圧可能な方向へ変位させる。押圧部材95は第1ダイアフラム84を外側から押圧することにより供給室82に貯留された液体を加圧する。この押圧部材95を用いた加圧機構96によって加圧された液体は、供給室82から導入針部64を通って上流側液体供給流路66内を液体収容体30に向かって流動する。 In addition, the control unit 50 supplies the upstream liquid based on a sensor or a timer (not shown) that detects the fluid pressure in the upstream liquid supply passage 66 or the completion of connection of the intermediate storage body 45 to the intermediate storage body connection portion 62. It is detected that the filling of the liquid in the channel 66 is started and the filling of the liquid is not finished. Then, the control unit 50 drives an actuator (not shown) to displace the pressing member 95 in a direction in which the first diaphragm 84 can be pressed from the outside. The pressing member 95 presses the first diaphragm 84 from the outside to pressurize the liquid stored in the supply chamber 82. The liquid pressurized by the pressurizing mechanism 96 using the pressing member 95 flows from the supply chamber 82 through the introduction needle portion 64 to the inside of the upstream liquid supply passage 66 toward the liquid container 30.

さらに、減圧機構97によって上流側液体供給流路66内を減圧することにより、供給室82から導入針部64を通って上流側液体供給流路66内に液体を液体収容体30に向かって流動させる。本実施形態の減圧機構97は、液体収容体30の液体収容室57を減圧することにより、上流側液体供給流路66内を減圧する。詳しくは、制御部50は、操作部16からユーザーが液体充填動作を行う旨の指示を受け付けるか、またはセンサー等による中間貯留体45の中間貯留体接続部62への接続を検知すると、メンテナンス装置75の吸引ポンプ78を駆動する。この結果、吸引ポンプ78からの吸引力が気体流路80を通じて液体収容室57に及び、液体収容室57内の気体(空気)が吸引されることにより、液体収容室57が減圧する。この液体収容室57の減圧の結果、液体収容室57に連通する上流側液体供給流路66も減圧され、供給室82に貯留された液体が導入針部64を通って上流側液体供給流路66内を液体収容室57に向かって流動する。 Further, by decompressing the inside of the upstream liquid supply passage 66 by the decompression mechanism 97, the liquid flows from the supply chamber 82 through the introduction needle portion 64 into the upstream liquid supply passage 66 toward the liquid container 30. Let The depressurization mechanism 97 of the present embodiment depressurizes the liquid storage chamber 57 of the liquid container 30 to depressurize the inside of the upstream liquid supply passage 66. Specifically, when the control unit 50 receives an instruction from the operation unit 16 that the user performs the liquid filling operation, or detects the connection of the intermediate storage body 45 to the intermediate storage body connecting portion 62 by a sensor or the like, the maintenance device is performed. The suction pump 78 of 75 is driven. As a result, the suction force from the suction pump 78 reaches the liquid storage chamber 57 through the gas flow path 80, and the gas (air) in the liquid storage chamber 57 is sucked, so that the liquid storage chamber 57 is depressurized. As a result of the depressurization of the liquid storage chamber 57, the upstream liquid supply passage 66 communicating with the liquid storage chamber 57 is also depressurized, and the liquid stored in the supply chamber 82 passes through the introduction needle portion 64 and the upstream liquid supply passage. It flows through the inside of 66 toward the liquid storage chamber 57.

こうして液体流動機構によって、上流側液体供給流路66内に初期的に存在する空気を液体収容体30側に排出するとともに上流側液体供給流路66に液体が充填される。このとき、中間貯留体接続部62に接続された中間貯留体45が上流側液体供給流路66より重力方向における上方となる位置に配置されることによる水頭差流動機構によって水頭差充填が行われるのに加え、加圧機構96によって、中間貯留部61内の液体を効果的に加圧する。この結果、液体が上流側液体供給流路66内を流動する際の流量(単位時間当たりに流れる液体量)が効果的に多くなる。また、減圧機構97によって、上流側液体供給流路66を減圧でき、液体が上流側液体供給流路66内を流動する際の流量が効果的に多くなる。 In this way, the liquid flow mechanism discharges the air initially present in the upstream liquid supply passage 66 to the liquid container 30 side and fills the upstream liquid supply passage 66 with the liquid. At this time, the head difference filling is performed by the head difference flow mechanism by arranging the intermediate reservoir 45 connected to the intermediate reservoir connection portion 62 at a position above the upstream liquid supply flow path 66 in the gravity direction. In addition to the above, the pressurizing mechanism 96 effectively pressurizes the liquid in the intermediate reservoir 61. As a result, the flow rate of the liquid flowing in the upstream liquid supply passage 66 (the amount of liquid flowing per unit time) effectively increases. Further, the depressurization mechanism 97 can depressurize the upstream liquid supply passage 66, and the flow rate of the liquid flowing in the upstream liquid supply passage 66 effectively increases.

この上流側液体供給流路66に液体を充填する第1の充填動作によって、図5に示すように、供給室82から上流側液体供給流路66内を液体収容体30に向かって流動した液体の一部が、供給口部68から液体収容室57内に流れ込む。例えばガイド板70で区画された領域を液体で満たしたうえ、ガイド板70の下端位置よりも重力方向において上方の位置まで液体が流れ込む。こうして第1の充填動作を終える。 As a result of the first filling operation for filling the upstream liquid supply passage 66 with the liquid, as shown in FIG. 5, the liquid flowing from the supply chamber 82 toward the liquid container 30 in the upstream liquid supply passage 66. Part of the liquid flows into the liquid storage chamber 57 from the supply port 68. For example, the area partitioned by the guide plate 70 is filled with the liquid, and the liquid flows to a position above the lower end position of the guide plate 70 in the gravity direction. Thus, the first filling operation is completed.

次に図6に示すように、ユーザーは液体収容体30に液体を注入する注入作業を行う。ユーザーは、カバー部材26を閉じ位置から開き位置へ回動し、露出した注入口54から栓55を取り外した後、液体ボトル100の注出口部100aを注入口54に差し込んで、液体ボトル100から液体収容室57に液体を注入する。このとき、ユーザーは、注入口54の軸線方向と平行な開き姿勢に保持されたカバー部材26の裏面上に、液体ボトル100を凹溝28aに係合させた状態で載置する。液体ボトル100は、注出口部100aが注入口54に差し込まれた状態で斜めの姿勢に保持されるため、ユーザーは液体ボトル100を手で保持していなくても、液体ボトル100から液体収容体30内へ液体が注入される。 Next, as shown in FIG. 6, the user performs an injection operation for injecting the liquid into the liquid container 30. The user rotates the cover member 26 from the closed position to the open position, removes the plug 55 from the exposed inlet 54, and then inserts the spout 100a of the liquid bottle 100 into the inlet 54 to remove the liquid from the liquid bottle 100. Liquid is injected into the liquid storage chamber 57. At this time, the user places the liquid bottle 100 on the back surface of the cover member 26 held in the open posture parallel to the axial direction of the injection port 54 in a state of being engaged with the concave groove 28a. Since the liquid bottle 100 is held in an oblique posture with the spout portion 100a being inserted into the inlet 54, the liquid bottle 100 can be held in the liquid container 100 even if the user does not hold the liquid bottle 100 by hand. Liquid is injected into 30.

この注入作業時にユーザーは液体収容体30内の液面の変化を視認部56で確認し、液面の高さが上限部58に達すると、注入を止め、注入口54を栓55で塞ぐ。そして、カバー部材26を閉じる。これで液体注入作業が完了する。なお、液体収容体30への液体の注入量は、その後に行われる第2の充填動作で必要な液量に達する分だけでもよい。こうして液体注入作業を終えたユーザーは操作部16を操作して液体注入作業終了の旨を液体噴射装置12に通知する。なお、第1の充填動作の終了時点で、第2の充填動作で必要な液量が液体収容室57に確保されていれば、液体注入作業は省くことができる。 At the time of this injection work, the user confirms the change of the liquid level in the liquid container 30 with the visual recognition part 56, and when the height of the liquid level reaches the upper limit part 58, the injection is stopped and the injection port 54 is closed with the plug 55. Then, the cover member 26 is closed. This completes the liquid injection work. The amount of liquid to be injected into the liquid container 30 may be only the amount required to reach the required liquid amount in the second filling operation performed thereafter. The user who finishes the liquid injection work operates the operation unit 16 to notify the liquid ejecting apparatus 12 of the end of the liquid injection work. If the liquid amount required for the second filling operation is secured in the liquid storage chamber 57 at the end of the first filling operation, the liquid injection work can be omitted.

制御部50は、液体注入作業終了の旨の通知を受け付けると、方向切換弁79をメンテナンス位置に切り換えるとともに大気開放弁81を大気開放位置に切り換える。この結果、大気開放されていない状態のキャップ76と吸引ポンプ78とが連通するとともに、液体収容室57が大気開放される。なお、第1の充填動作時に液体噴射部36のノズル71から液体が漏れ出る心配がない場合は、キャップ76を液体噴射部36から離間した退避位置に配置しておいてもよい。この場合、第1の充填動作の終了後または液体注入作業終了後に、制御部50が相対移動機構の動力源を駆動し、キャップ76をキャッピング位置に移動させ、キャップ76と液体噴射部36とに囲まれた閉空間を形成する。 When the control unit 50 receives the notification that the liquid injection work is completed, the control unit 50 switches the direction switching valve 79 to the maintenance position and switches the atmosphere opening valve 81 to the atmosphere opening position. As a result, the cap 76 and the suction pump 78, which are not open to the atmosphere, communicate with each other, and the liquid storage chamber 57 is opened to the atmosphere. If there is no risk of liquid leaking from the nozzle 71 of the liquid ejecting unit 36 during the first filling operation, the cap 76 may be placed at a retracted position separated from the liquid ejecting unit 36. In this case, after the end of the first filling operation or the end of the liquid injection work, the control unit 50 drives the power source of the relative movement mechanism to move the cap 76 to the capping position, and the cap 76 and the liquid ejecting unit 36 are separated. Form an enclosed space.

そして、制御部50は、吸引ポンプ78を駆動させてノズル71と連通する閉空間を負圧とし、その負圧による吸引力によって、圧力室83に貯留された液体が下流側液体供給流路67内をノズル71に向かって流動する。このとき、圧力室83に貯留された液体が減少してその液圧が低下するに伴って、第2ダイアフラム85が外側の大気圧と内側の液圧との差圧によって圧力室83の容積を減少させる方向へ変位し、その液圧が設定圧を下回ると、圧力調整機構63が開弁し、供給室82から圧力室83へ液体が流動する。こうしてノズル71からの吸引力によって圧力室83に貯留された液体が下流側液体供給流路67内を下流側へ流動し、ノズル71から気体および液体がキャップ76内に吸引排出される。そして、吸引ポンプ78の駆動が停止し、圧力室83内の液圧が設定圧になると圧力調整機構63が閉弁する。こうして第2の充填動作によって、下流側液体供給流路67に液体が充填される。 Then, the control unit 50 drives the suction pump 78 to make the closed space communicating with the nozzle 71 a negative pressure, and the suction force by the negative pressure causes the liquid stored in the pressure chamber 83 to cause the liquid stored in the pressure chamber 83 to flow downstream. It flows inside toward the nozzle 71. At this time, as the liquid stored in the pressure chamber 83 decreases and the liquid pressure thereof decreases, the second diaphragm 85 reduces the volume of the pressure chamber 83 by the pressure difference between the outer atmospheric pressure and the inner liquid pressure. When the liquid pressure is displaced in the decreasing direction and the liquid pressure falls below the set pressure, the pressure adjusting mechanism 63 opens, and the liquid flows from the supply chamber 82 to the pressure chamber 83. In this way, the liquid stored in the pressure chamber 83 flows to the downstream side in the downstream liquid supply channel 67 by the suction force from the nozzle 71, and the gas and the liquid are sucked and discharged from the nozzle 71 into the cap 76. Then, the driving of the suction pump 78 is stopped, and when the hydraulic pressure in the pressure chamber 83 reaches the set pressure, the pressure adjusting mechanism 63 is closed. In this way, the second filling operation fills the downstream liquid supply passage 67 with the liquid.

こうして第2の充填動作(第2の充填工程)を終えると、初期充填が完了する。次に制御部50は、相対移動機構を駆動し、キャップ76を液体噴射部36から少し離間したフラッシング位置に配置する。そして、制御部50は、メンテナンス装置75を駆動させて不図示のワイパーにより液体噴射部36のノズル開口面を払拭し、続いて液体噴射部36の全てのノズル71からキャップ76に向けて1〜数滴の液体を噴射するフラッシングを行わせる。これによりノズル71内の液体に適切な形状のメニスカスが形成されるため、その後、媒体Mに向けてノズル71から液体を正常な状態で噴射できる。 When the second filling operation (second filling step) is completed in this way, the initial filling is completed. Next, the control unit 50 drives the relative movement mechanism to place the cap 76 at the flushing position slightly separated from the liquid ejecting unit 36. Then, the control unit 50 drives the maintenance device 75 to wipe the nozzle opening surface of the liquid ejecting unit 36 with a wiper (not shown), and subsequently 1 to 1 from all the nozzles 71 of the liquid ejecting unit 36 toward the cap 76. Flushing with a few drops of liquid. As a result, a meniscus having an appropriate shape is formed in the liquid inside the nozzle 71, and then the liquid can be ejected from the nozzle 71 toward the medium M in a normal state.

本実施形態では、上流側液体供給流路66の液体充填と下流側液体供給流路67の液体充填とを別々に行っている。このため、中間貯留体45から液体を供給する場合、上流側液体供給流路66と下流側液体供給流路67との両側に同時に液体を供給する場合に比べ、上流側液体供給流路66への液体充填が短時間で安定して行える。 In the present embodiment, the liquid filling of the upstream liquid supply passage 66 and the liquid filling of the downstream liquid supply passage 67 are performed separately. Therefore, when the liquid is supplied from the intermediate reservoir 45, the liquid is supplied to the upstream liquid supply passage 66 as compared with the case where the liquid is supplied to both sides of the upstream liquid supply passage 66 and the downstream liquid supply passage 67 at the same time. The liquid filling can be performed stably in a short time.

ここで、特許文献1に記載された従来の液体噴射装置のように、ノズルから液体を吸引排出するだけの液体充填動作を採用した場合、液体収容体30側に存在した空気もノズルに至るまで比較的長い距離の液体供給流路46を移動することになるため、液体供給流路46内に気泡が比較的残りやすい。また、液体収容体30はその内部に液体領域と空気領域とが存在する開放系なので、液体ボトル100から液体収容体30に液体を注入する際に空気を巻き込んで液体中に気泡が発生しやすい。この場合、液体充填時に液体収容体からの気泡が存在しやすい液体を液体供給流路に充填することになるので、この点からも液体供給流路を充填した液体に気泡が残りやすい。この場合、気泡に起因する液体の噴射不良を招き易くなる。 Here, when the liquid filling operation of only sucking and discharging the liquid from the nozzle is adopted like the conventional liquid ejecting apparatus described in Patent Document 1, even the air existing on the liquid container 30 side reaches the nozzle. Since the liquid supply channel 46 moves over a relatively long distance, bubbles are relatively likely to remain in the liquid supply channel 46. Further, since the liquid container 30 is an open system in which the liquid region and the air region exist, when the liquid is injected into the liquid container 30 from the liquid bottle 100, air is entangled and bubbles are easily generated in the liquid. .. In this case, since the liquid from which the bubbles from the liquid container are likely to exist is filled into the liquid supply channel when the liquid is filled, bubbles also tend to remain in the liquid filling the liquid supply channel from this point as well. In this case, defective ejection of the liquid due to the bubbles is likely to occur.

これに対して、本実施形態では、液体充填時に、液体供給流路46のうち中間貯留体接続部62よりも上流側に位置する上流側液体供給流路66内の空気は液体収容体30に排出し、かつ下流側液体供給流路67内の空気は液体噴射部36のノズル71から排出される。このため、液体供給流路46を通って排出される空気の移動距離が比較的短く済むため、液体充填後において液体供給流路46内に空気(気泡)が残りにくい。また、液体充填に使用される液体供給源が、液体のみが貯留された密閉系の中間貯留体45なので、中間貯留体45から液体供給流路46に極めて気泡の少ない液体が充填される。 On the other hand, in the present embodiment, at the time of filling the liquid, the air in the upstream liquid supply passage 66 located on the upstream side of the intermediate reservoir connecting portion 62 in the liquid supply passage 46 is transferred to the liquid container 30. The air discharged and in the downstream liquid supply passage 67 is discharged from the nozzle 71 of the liquid ejecting unit 36. For this reason, since the moving distance of the air discharged through the liquid supply flow path 46 is relatively short, air (air bubbles) is unlikely to remain in the liquid supply flow path 46 after the liquid is filled. Further, since the liquid supply source used for filling the liquid is the closed intermediate storage body 45 in which only the liquid is stored, the liquid having a very small number of bubbles is filled from the intermediate storage body 45 into the liquid supply flow path 46.

その後、開閉弁73が開いた状態で供給ポンプ74が駆動されることにより液体収容体30から上流側液体供給流路66を通じて中間貯留体45の供給室82に液体が供給され、供給室82に所定量の液体が貯留される。液体噴射動作が開始されると、液体噴射部36のノズル71から媒体Mに向かって液体が噴射されることにより液体が消費される。液体の消費により圧力室83内の液圧が設定圧を下回ると、圧力調整機構63が開弁し、供給室82から連通孔88を通じて圧力室83に液体が供給される。そして、圧力室83内の液圧が設定圧に達すると、圧力調整機構63が閉弁する。こうして液体噴射部36の背圧を決める圧力室83の液圧が設定圧に維持される。これによりノズル71内の液体に適切な形状のメニスカスが形成されるため、ノズル71から媒体Mに向けて正常な液体を噴射できる。この結果、液体噴射部36から噴射された液体が媒体Mに着弾して形成される例えば印刷等の液体着弾形成物の品質を高く維持できる。また、初期充填終了直後の液体供給流路46内の液体は気泡が相対的に少ないことから、気泡に起因する液体噴射不良の発生頻度が低減する。この点からも、高品質の液体着弾形成物を形成できる。 After that, the supply pump 74 is driven with the opening/closing valve 73 opened, whereby the liquid is supplied from the liquid container 30 to the supply chamber 82 of the intermediate reservoir 45 through the upstream liquid supply flow path 66, and the liquid is supplied to the supply chamber 82. A predetermined amount of liquid is stored. When the liquid ejecting operation is started, the liquid is ejected from the nozzle 71 of the liquid ejecting unit 36 toward the medium M to consume the liquid. When the liquid pressure in the pressure chamber 83 falls below the set pressure due to the consumption of the liquid, the pressure adjusting mechanism 63 opens, and the liquid is supplied from the supply chamber 82 to the pressure chamber 83 through the communication hole 88. When the hydraulic pressure in the pressure chamber 83 reaches the set pressure, the pressure adjusting mechanism 63 closes. In this way, the hydraulic pressure in the pressure chamber 83 that determines the back pressure of the liquid ejecting unit 36 is maintained at the set pressure. As a result, a meniscus having an appropriate shape is formed in the liquid inside the nozzle 71, so that a normal liquid can be ejected from the nozzle 71 toward the medium M. As a result, it is possible to maintain high quality of a liquid landing formed product such as printing formed by landing the liquid ejected from the liquid ejecting unit 36 on the medium M. Further, since the liquid in the liquid supply flow path 46 immediately after the completion of the initial filling has relatively few bubbles, the frequency of occurrence of liquid ejection failure due to the bubbles is reduced. From this point as well, it is possible to form a high-quality liquid landing product.

以上詳述したように、上記第1実施形態によれば、以下の効果を得ることができる。
(1)液体を噴射する液体噴射部36と、液体収容体30が収容する液体を液体噴射部36に供給可能に液体収容体30と液体噴射部36とを接続する液体供給流路46を備える。液体収容体30と液体噴射部36との間となる位置に、液体を貯留可能な中間貯留部61を有する中間貯留体45を接続可能な中間貯留体接続部62を有する液体供給流路46を備える。液体噴射装置12に液体を充填する液体充填方法において、液体供給流路46のうち中間貯留体接続部62より上流側となる上流側液体供給流路66内に中間貯留体接続部62から液体を流動させて、上流側液体供給流路66に液体を充填する。よって、上流側液体供給流路66に液体を充填する際に上流側液体供給流路66内に初期的に存在する空気を上流側に排出することができるので、液体噴射部36内を経由して外部に排出する空気の量を低減でき、効率的な充填動作が行える。この場合、液体収容体30が注ぎ足しタイプの開放系のタンクであっても、液体供給流路46に気泡の取り込みを抑えつつ効率よく液体を充填することができる。
As described in detail above, according to the first embodiment, the following effects can be obtained.
(1) A liquid ejecting unit 36 that ejects a liquid, and a liquid supply channel 46 that connects the liquid container 30 and the liquid ejecting unit 36 so that the liquid contained in the liquid container 30 can be supplied to the liquid ejecting unit 36. .. At a position between the liquid container 30 and the liquid ejecting unit 36, the liquid supply flow path 46 having the intermediate reservoir connecting portion 62 capable of connecting the intermediate reservoir 45 having the intermediate reservoir 61 capable of retaining the liquid is provided. Prepare In the liquid filling method of filling the liquid ejecting apparatus 12 with liquid, the liquid is supplied from the intermediate reservoir connecting portion 62 into the upstream side liquid supply passage 66 of the liquid supply passage 46 which is upstream of the intermediate reservoir connecting portion 62. The liquid is flowed to fill the upstream liquid supply channel 66 with the liquid. Therefore, when the upstream liquid supply passage 66 is filled with the liquid, the air initially present in the upstream liquid supply passage 66 can be discharged to the upstream side, so that the air is passed through the inside of the liquid ejecting unit 36. The amount of air discharged to the outside can be reduced, and efficient filling operation can be performed. In this case, even if the liquid container 30 is an open-type tank of a full-filling type, it is possible to efficiently fill the liquid supply channel 46 with the liquid while suppressing the intake of bubbles.

(2)中間貯留部61に液体を予め充填された中間貯留体45を中間貯留体接続部62に接続し、上流側液体供給流路66に中間貯留部61の液体を充填する。よって、上流側液体供給流路66内に中間貯留体接続部62側から液体を流動させて、上流側液体供給流路66に液体を充填することが容易に行える。 (2) The intermediate reservoir 45, which is pre-filled with liquid in the intermediate reservoir 61, is connected to the intermediate reservoir connection portion 62, and the upstream side liquid supply channel 66 is filled with the liquid in the intermediate reservoir 61. Therefore, it is possible to easily flow the liquid from the side of the intermediate storage body connecting portion 62 into the upstream liquid supply passage 66 to easily fill the upstream liquid supply passage 66 with the liquid.

(3)中間貯留体45は、中間貯留部61内が中間貯留部61の外側空間より圧力が高くなるように液体を予め充填されている。よって、中間貯留部61内の液体が加圧された状態の中間貯留体45を使用することにより液体が上流側液体供給流路66内を流動する際の流量(単位時間当たりに流れる液体量)を多くできるので、効率的な充填動作が行える。 (3) The intermediate reservoir 45 is pre-filled with liquid such that the pressure inside the intermediate reservoir 61 is higher than that in the outer space of the intermediate reservoir 61. Therefore, by using the intermediate reservoir 45 in which the liquid in the intermediate reservoir 61 is pressurized, the flow rate of the liquid flowing in the upstream liquid supply passage 66 (the amount of liquid flowing per unit time) Since the number of charges can be increased, an efficient filling operation can be performed.

(4)液体供給流路46のうち中間貯留体接続部62より下流側となる下流側液体供給流路67内に中間貯留体接続部62から液体を流動させて、下流側液体供給流路67に液体を充填する。よって、下流側液体供給流路67に液体を充填することにより液体供給流路46内に液体を充填することができる。 (4) The liquid is flown from the intermediate storage body connecting portion 62 into the downstream side liquid supply flow passage 67 that is on the downstream side of the intermediate storage body connecting portion 62 in the liquid supply flow passage 46, and the downstream side liquid supply flow passage 67 is formed. Fill with liquid. Therefore, the liquid can be filled in the liquid supply passage 46 by filling the downstream liquid supply passage 67 with the liquid.

(5)液体噴射装置12は、液体収容体30と、液体を噴射する液体噴射部36とを有する。液体収容体30は、液体を収容可能な液体収容室57と、液体収容室57に液体を外部から注入可能な注入口54と、液体収容室57を大気に連通させる大気連通孔69とを有する。また、液体噴射装置12は、液体収容体30が収容する液体を液体噴射部36に供給可能に液体収容体30と液体噴射部36とを接続する液体供給流路46は、液体収容体30と液体噴射部36との間となる位置に、液体を貯留可能な中間貯留部61を有する中間貯留体45を接続可能な中間貯留体接続部62を有している。さらに、液体噴射装置12は、中間貯留体接続部62に接続された中間貯留体45の中間貯留部61が貯留する液体を、液体供給流路46のうち中間貯留体接続部62より上流側となる上流側液体供給流路66内に流動させる液体流動機構を備える。よって、上流側液体供給流路66に液体を充填する際に上流側液体供給流路66内に初期的に存在する空気を上流側に排出することができるので、液体噴射部36内を経由して外部に排出する空気の量を低減でき、効率的な充填動作が行える。 (5) The liquid ejecting apparatus 12 includes the liquid container 30 and the liquid ejecting unit 36 that ejects the liquid. The liquid container 30 has a liquid storage chamber 57 that can store the liquid, an injection port 54 that can inject the liquid into the liquid storage chamber 57 from the outside, and an atmosphere communication hole 69 that connects the liquid storage chamber 57 to the atmosphere. .. Further, in the liquid ejecting apparatus 12, the liquid supply flow path 46 that connects the liquid container 30 and the liquid ejecting unit 36 so that the liquid contained in the liquid container 30 can be supplied to the liquid ejecting unit 36 is connected to the liquid container 30. An intermediate storage body connecting portion 62 capable of connecting the intermediate storage body 45 having the intermediate storage portion 61 capable of storing the liquid is provided at a position between the liquid jetting portion 36. Further, in the liquid ejecting apparatus 12, the liquid stored in the intermediate storage portion 61 of the intermediate storage body 45 connected to the intermediate storage body connecting portion 62 is connected to the upstream side of the intermediate storage body connecting portion 62 in the liquid supply flow path 46. And a liquid flow mechanism for causing the liquid to flow into the upstream liquid supply flow path 66. Therefore, when the upstream liquid supply passage 66 is filled with the liquid, the air initially present in the upstream liquid supply passage 66 can be discharged to the upstream side, so that the air is passed through the inside of the liquid ejecting unit 36. The amount of air discharged to the outside can be reduced, and efficient filling operation can be performed.

(6)液体流動機構として、上流側液体供給流路66より重力方向において上方となる位置に中間貯留体接続部62を備える。よって、中間貯留部61内の液体と上流側液体供給流路66との高低差(水頭差)を利用することにより中間貯留部61内の液体を上流側液体供給流路66内に流動させることができる。 (6) As the liquid flow mechanism, the intermediate reservoir connection portion 62 is provided at a position above the upstream liquid supply flow path 66 in the gravity direction. Therefore, by utilizing the height difference (head difference) between the liquid in the intermediate reservoir 61 and the upstream liquid supply passage 66, the liquid in the intermediate reservoir 61 can flow into the upstream liquid supply passage 66. You can

(7)液体流動機構として、中間貯留体接続部62に接続された中間貯留体45の中間貯留部61内の液体を加圧する加圧機構96を備える。よって、中間貯留部61内の液体を加圧することにより液体が上流側液体供給流路66内を流動する際の流量(単位時間当たりに流れる液体量)を多くできるので、効率的な充填動作が行える。また、加圧機構として、加圧機構96には、中間貯留部61に液体を外部空間よりも高い圧力に加圧した状態で貯留した第1の加圧機構と、中間貯留部61内の液体を中間貯留体45の外部から外力で加圧(例えば押圧)する第2の加圧機構とが含まれる。よって、中間貯留部61内の液体を効果的に加圧でき、液体が上流側液体供給流路66内を流動する際の流量(単位時間当たりに流れる液体量)を効果的に多くできるので、より効率的な充填動作が行える。 (7) As a liquid flow mechanism, a pressure mechanism 96 that pressurizes the liquid in the intermediate storage portion 61 of the intermediate storage body 45 connected to the intermediate storage body connecting portion 62 is provided. Therefore, the flow rate (the amount of liquid flowing per unit time) when the liquid flows in the upstream liquid supply flow path 66 can be increased by pressurizing the liquid in the intermediate storage portion 61, so that an efficient filling operation can be performed. You can do it. Further, as a pressurizing mechanism, the pressurizing mechanism 96 includes a first pressurizing mechanism that stores the liquid in the intermediate reservoir 61 in a state of being pressurized to a pressure higher than the external space, and a liquid in the intermediate reservoir 61. And a second pressurizing mechanism that pressurizes (for example, presses) with an external force from the outside of the intermediate storage body 45. Therefore, the liquid in the intermediate reservoir 61 can be effectively pressurized, and the flow rate (the amount of liquid flowing per unit time) when the liquid flows in the upstream liquid supply passage 66 can be effectively increased. More efficient filling operation can be performed.

(8)液体流動機構として、上流側液体供給流路66内を減圧する減圧機構97を備える。よって、上流側液体供給流路66内を減圧することにより液体が上流側液体供給流路66内を流動する際の流量(単位時間当たりに流れる液体量)を多くできるので、効率的な充填動作が行える。 (8) As a liquid flow mechanism, a pressure reducing mechanism 97 for reducing the pressure inside the upstream liquid supply passage 66 is provided. Therefore, by reducing the pressure in the upstream liquid supply passage 66, the flow rate (the amount of liquid flowing per unit time) when the liquid flows in the upstream liquid supply passage 66 can be increased, so that an efficient filling operation can be performed. Can be done.

(第2実施形態)
次に図面を参照して第2実施形態を説明する。第1実施形態における中間貯留体45は、圧力調整機構63を備えていたが、本実施形態の中間貯留体45は圧力調整機構63を備えておらず液体を貯留する液体貯留機能だけを有する。図8に示す中間貯留体45は、外側の一面にダイアフラム110を有する液体貯留室111を備える。中間貯留体45には、液体貯留室111の端部に導入口部86が設けられ、液体貯留室111とフィルター112を挟んだ反対側に設けられた流路113の端部に導出口部87が設けられている。図8の例では、中間貯留体45内の液体貯留室111と流路113とにより、液体が貯留される中間貯留部61が構成される。中間貯留体45は、中間貯留部61の外側空間より圧力が高くなるように中間貯留部61に予め液体が充填された状態にある。
(Second embodiment)
Next, a second embodiment will be described with reference to the drawings. The intermediate storage body 45 in the first embodiment includes the pressure adjusting mechanism 63, but the intermediate storage body 45 in the present embodiment does not include the pressure adjusting mechanism 63 and has only a liquid storage function of storing a liquid. The intermediate storage body 45 shown in FIG. 8 includes a liquid storage chamber 111 having a diaphragm 110 on one outer surface. The intermediate storage body 45 is provided with an inlet port portion 86 at an end portion of the liquid storage chamber 111, and an outlet port portion 87 at an end portion of the flow path 113 provided on the opposite side of the liquid storage chamber 111 and the filter 112. Is provided. In the example of FIG. 8, the liquid storage chamber 111 in the intermediate storage body 45 and the flow path 113 configure an intermediate storage portion 61 in which liquid is stored. The intermediate reservoir 45 is in a state in which the intermediate reservoir 61 is pre-filled with liquid so that the pressure is higher than that of the outer space of the intermediate reservoir 61.

液体噴射装置12は、中間貯留体接続部62に接続された中間貯留体45の中間貯留部61が貯留する液体を、上流側液体供給流路66内に流動させるために液体流動機構を備える。液体流動機構は、前記第1実施形態と同様に、液体流動機構(水頭差流動機構)と、加圧機構96(第1の加圧機構およびる第2の加圧機構)と、減圧機構97とを備えている。 The liquid ejecting apparatus 12 includes a liquid flowing mechanism for causing the liquid stored in the intermediate storage portion 61 of the intermediate storage body 45 connected to the intermediate storage body connecting portion 62 to flow into the upstream liquid supply passage 66. Similar to the first embodiment, the liquid flow mechanism includes a liquid flow mechanism (head difference flow mechanism), a pressurizing mechanism 96 (first pressurizing mechanism and second pressurizing mechanism), and a depressurizing mechanism 97. It has and.

次に液体噴射装置12の作用を説明する。ユーザーは、初期充填を行うときは、操作部16を操作して液体充填を行う旨を液体噴射装置12に指示する。制御部50は、液体充填を行う旨の指示を受け付けると、液体充填準備動作を行う。制御部50は、方向切換弁79を大気開放選択位置、大気開放弁81を大気開放位置にそれぞれ切り換えるとともに、開閉弁73を開弁状態、供給ポンプ74をレリース状態とする。また、制御部50は、吸引ポンプ78をレリース状態とし、相対移動機構の動力源を駆動し、キャップ76をキャッピング位置に配置する。 Next, the operation of the liquid ejecting apparatus 12 will be described. When performing the initial filling, the user operates the operation unit 16 to instruct the liquid ejecting apparatus 12 to perform the liquid filling. When the control unit 50 receives the instruction to perform the liquid filling, the control unit 50 performs the liquid filling preparation operation. The control unit 50 switches the direction switching valve 79 to the atmosphere open selection position and the atmosphere open valve 81 to the atmosphere open position, respectively, and sets the open/close valve 73 to the open state and the supply pump 74 to the release state. Further, the control unit 50 puts the suction pump 78 in the release state, drives the power source of the relative movement mechanism, and positions the cap 76 at the capping position.

そして、ユーザーは、初期充填時に中間貯留体45をキャリッジ34上の中間貯留体接続部62(導入針部64と導出針部65)に接続する、液体流動機構によって中間貯留部61内の液体が導入針部64から上流側液体供給流路66に流動する。このため、上流側液体供給流路66内に初期的に存在する空気を上流側の液体収容体30内へ排出しつつ、上流側液体供給流路66に液体が充填される。また、このとき並行して、中間貯留部61内の液体が供給針部65から下流側液体供給流路67に流動し、下流側液体供給流路67内の空気が液体噴射部36のノズル71から排出されることで、ノズル71まで液体が充填される。この結果、初期充填時に液体供給流路46内の気体(空気)を効率よく排出することができる。また、本実施形態では、上流側液体供給流路66と下流側液体供給流路67とに同時に液体充填が開始されるので、液体充填動作の全体の所要時間を相対的に短くすることができる。また、第2実施形態では、中間貯留体45が、第1実施形態とは異なり圧力調整機構63を備えず、1つの室からなる中間貯留部61を有する構成であるものの、前記第1実施形態における前記(1)〜(8)と同様の効果を得ることができる。 Then, the user connects the intermediate reservoir 45 to the intermediate reservoir connection portion 62 (introducing needle portion 64 and outlet needle portion 65) on the carriage 34 at the time of initial filling. It flows from the introduction needle portion 64 to the upstream liquid supply flow path 66. Therefore, while the air initially present in the upstream liquid supply passage 66 is discharged into the upstream liquid container 30, the upstream liquid supply passage 66 is filled with the liquid. In addition, at this time, in parallel, the liquid in the intermediate reservoir 61 flows from the supply needle portion 65 to the downstream liquid supply flow path 67, and the air in the downstream liquid supply flow path 67 causes the nozzle 71 of the liquid ejecting unit 36 to flow. The liquid is filled up to the nozzle 71 by being discharged from. As a result, the gas (air) in the liquid supply flow path 46 can be efficiently discharged during the initial filling. Further, in the present embodiment, liquid filling is simultaneously started in the upstream liquid supply passage 66 and the downstream liquid supply passage 67, so that the total time required for the liquid filling operation can be relatively shortened. .. Further, in the second embodiment, unlike the first embodiment, the intermediate storage body 45 does not include the pressure adjusting mechanism 63 and has the intermediate storage portion 61 formed of one chamber, but the first embodiment is the same as the first embodiment. The same effects as the above (1) to (8) can be obtained.

なお、実施形態は、以下に示す形態に変更できる。
・液体流動機構として減圧機構97を用いない構成の場合、大気開放弁81を大気開放位置に切り換えることで液体収容体30を大気開放てしておくことが好ましい。この場合、液体が流入したことによる液体収容体30内の圧力が高まることに起因する上流側液体供給流路66の充填効率の低下を抑制できる。
The embodiment can be changed to the following modes.
In the case where the decompression mechanism 97 is not used as the liquid flow mechanism, it is preferable to open the liquid container 30 to the atmosphere by switching the atmosphere opening valve 81 to the atmosphere opening position. In this case, it is possible to suppress a decrease in the filling efficiency of the upstream liquid supply flow channel 66 due to an increase in the pressure inside the liquid container 30 due to the inflow of the liquid.

・前記各実施形態において、タイマーや液体収容体30に設けたセンサー等を用いて上流側液体供給流路66の液体充填が完了したことを制御部50が検知すると、上流側液体供給流路66に設けた開閉弁73を閉じて液体の流動を停止させてもよい。この場合、液体収容体は上流側液体供給流路66の上流端に接続されていなくてもよい。 In each of the above-described embodiments, when the control unit 50 detects that the upstream side liquid supply channel 66 has been filled with liquid using a timer or a sensor provided in the liquid container 30, the upstream side liquid supply channel 66 is detected. The liquid flow may be stopped by closing the on-off valve 73 provided in the. In this case, the liquid container does not have to be connected to the upstream end of the upstream liquid supply passage 66.

・液体収容体30に替え、充填用アタッチメント(充填専用液体収容体)を装着した状態で、中間貯留体接続部62から上流側液体供給流路66への液体充填を行ってもよい。充填用アタッチメントは液体充填時に上流側液体供給流路66の上流端から流出した液体を回収する液体回収室と、液体回収室を大気に開放する大気開放連通部と、液体収容室から大気開放連通部を通るときに液体と気体を分離して気体のみを通す気液分離部(例えば気液分離膜)とを有する。上流側液体供給流路66の液体充填終了後、充填用アタッチメントを取外し、液体収容体30を装着する。 -Instead of the liquid container 30, a filling attachment (liquid container for exclusive use of filling) may be mounted, and liquid may be filled from the intermediate reservoir connecting portion 62 to the upstream liquid supply passage 66. The filling attachment is a liquid recovery chamber that recovers the liquid that has flowed out from the upstream end of the upstream liquid supply flow path 66 during liquid filling, an atmosphere opening communication portion that opens the liquid recovery chamber to the atmosphere, and an atmosphere opening communication from the liquid storage chamber. And a gas-liquid separation unit (for example, a gas-liquid separation membrane) that separates a liquid and a gas and passes only the gas when passing through the section. After the liquid filling of the upstream liquid supply channel 66 is completed, the filling attachment is removed and the liquid container 30 is attached.

・減圧機構は、前記各実施形態における液体収容室57を減圧する減圧機構97に替え、供給ポンプ74を液体噴射動作時(液体供給時)の駆動とは反対側に逆駆動させることにより上流側液体供給流路66の少なくとも一部を減圧する減圧機構でもよい。詳しくは、供給ポンプ74は、液体収容体30から液体噴射部36に向かう第1方向へ液体を流動させる第1駆動(例えば正転駆動)と、中間貯留部61から液体収容体30に向かう第2方向へ液体を流動させる第2駆動(例えば逆転駆動)とが可能な構成とする。液体充填時は、開閉弁73は開弁状態にあって上流側液体供給流路66を連通状態とし、大気開放弁81は大気開放位置にあって液体収容室57を大気開放させる。そして、液体充填動作時は、供給ポンプ74を液体噴射動作時の第1駆動と異なる第2駆動で駆動し、上流側液体供給流路66のうちポンプ74より下流側の部分を減圧することにより、中間貯留部61内の液体を上流側に向かって流動させて上流側液体供給流路66に液体を充填する。この場合、上流側液体供給流路66のうち供給ポンプ74より上流側の部分は、供給ポンプ74からの液体の圧送によって充填される。なお、供給ポンプ74は、第1駆動と第2駆動の他、供給ポンプ74の両側で上流側液体供給流路66を連通させるレリース状態へ切換え可能であることが好ましい。 The depressurizing mechanism is replaced with the depressurizing mechanism 97 for depressurizing the liquid storage chamber 57 in each of the above-described embodiments, and the supply pump 74 is reversely driven to the side opposite to the drive during liquid ejecting operation (during liquid supply) to the upstream side. A decompression mechanism that decompresses at least a part of the liquid supply channel 66 may be used. Specifically, the supply pump 74 has a first drive (for example, a normal rotation drive) that causes the liquid to flow in a first direction from the liquid container 30 toward the liquid ejecting unit 36, and a first drive from the intermediate storage unit 61 toward the liquid container 30. The second drive (for example, reverse drive) that causes the liquid to flow in two directions is configured to be possible. At the time of liquid filling, the opening/closing valve 73 is in the open state and the upstream liquid supply flow path 66 is in the communicating state, and the atmosphere opening valve 81 is in the atmosphere opening position to open the liquid storage chamber 57 to the atmosphere. Then, during the liquid filling operation, the supply pump 74 is driven by the second drive different from the first drive during the liquid ejecting operation, and the portion of the upstream liquid supply passage 66 on the downstream side of the pump 74 is depressurized. The liquid in the intermediate reservoir 61 is caused to flow toward the upstream side to fill the upstream liquid supply passage 66 with the liquid. In this case, the part of the upstream liquid supply flow path 66 on the upstream side of the supply pump 74 is filled by pumping the liquid from the supply pump 74. In addition to the first drive and the second drive, it is preferable that the supply pump 74 can be switched to a release state in which the upstream liquid supply passage 66 is communicated on both sides of the supply pump 74.

・液体流動機構は、水頭差流動機構と加圧機構と減圧機構のうち少なくとも1つを備えるだけでもよい。また、加圧機構を備える場合、第1の加圧機構と第2の加圧機構とのうち一方を備えるだけでもよい。また、減圧機構を備える場合、液体収容室57を減圧する第1の減圧機構と供給ポンプ74を逆駆動させる第2の減圧機構とのうち少なくとも一方を備えればよい。第1の減圧機構と第2の減圧機構との両方を備えた場合は、上流側液体供給流路66の液体充填をより効率的に行える。 The liquid flow mechanism may include only at least one of the head differential flow mechanism, the pressurizing mechanism, and the depressurizing mechanism. When the pressure mechanism is provided, only one of the first pressure mechanism and the second pressure mechanism may be provided. In the case where the decompression mechanism is provided, at least one of the first decompression mechanism that decompresses the liquid storage chamber 57 and the second decompression mechanism that reversely drives the supply pump 74 may be provided. When both the first pressure reducing mechanism and the second pressure reducing mechanism are provided, liquid filling of the upstream liquid supply flow path 66 can be performed more efficiently.

・前記各実施形態において、下流側液体供給流路67の液体充填を先に行ってもよい。この場合、大気開放弁81を遮断するか、上流側液体供給流路66に設けた開閉弁73を閉じておく。この構成によれば、下流側液体供給流路67への液体充填を先に行ってから、全体の液体充填が終了するまでの時間が長くなるので、液体充填後に印刷に影響する気泡が無くなるまで印刷の開始を待機する待機工程を上流側液体供給流路66への液体充填と並行して行える。この結果、液体充填終了時点から印刷開始可能時期までの待機時間を短くすることができる。 In each of the above-described embodiments, the liquid filling of the downstream side liquid supply channel 67 may be performed first. In this case, the atmosphere opening valve 81 is shut off or the opening/closing valve 73 provided in the upstream liquid supply flow path 66 is closed. According to this configuration, since it takes a long time from the first liquid filling to the downstream liquid supply channel 67 until the entire liquid filling is completed, until the bubbles that affect printing disappear after the liquid filling. The standby step of waiting for the start of printing can be performed in parallel with the filling of the upstream liquid supply flow path 66 with the liquid. As a result, it is possible to shorten the waiting time from the end of liquid filling to the start of printing.

・上流側液体供給流路66と下流側液体供給流路67との液体充填を同時に行ってもよい。この場合、下流側液体供給流路67の液体充填では、キャップ76で液体噴射部36をキャッピングし、吸引ポンプ78を駆動させずにレリース状態にしておくことが好ましい。また、中間貯留部61が圧力調整機構63の供給室82である場合、圧力室83を押圧する等して開弁するのが好ましい。この場合、全体の液体充填を短時間で行える。 The liquid filling of the upstream liquid supply passage 66 and the downstream liquid supply passage 67 may be performed simultaneously. In this case, when filling the downstream side liquid supply flow path 67 with liquid, it is preferable that the liquid ejecting unit 36 is capped with the cap 76 and the suction pump 78 is not driven to be in the release state. Further, when the intermediate storage portion 61 is the supply chamber 82 of the pressure adjusting mechanism 63, it is preferable to open the valve by pressing the pressure chamber 83 or the like. In this case, the entire liquid can be filled in a short time.

・中間貯留部61に予め液体が充填されていない場合は、中間貯留部61に注入口を設けておき、外部から液体を供給することにより、液体供給流路に液体を圧送することにより液体充填を行ってもよい。 When the intermediate storage 61 is not filled with liquid in advance, an injection port is provided in the intermediate storage 61, and the liquid is supplied from the outside so that the liquid is pumped to the liquid supply channel to fill the liquid. You may go.

・中間貯留部61の少なくとも一部が可撓性を有する可撓部を備える場合、可撓部を外力により加圧する方法は、押圧部材95が可撓部を押圧する方法に限定されない。例えば、中間貯留体45の可撓部(例えば第1ダイアフラム84)の外側に加圧室を設け、加圧室に気体(例えば空気)を供給することにより加圧室内の気体の圧力を外力として可撓部に与えて中間貯留部61を加圧してもよい。この場合、加圧気体により外力を与えて中間貯留部内を加圧する加圧機構と、水頭差流動機構(水頭差充填)とを併用してもよい。 When at least a part of the intermediate storage portion 61 includes a flexible portion having flexibility, the method of pressing the flexible portion with an external force is not limited to the method in which the pressing member 95 presses the flexible portion. For example, a pressurizing chamber is provided outside the flexible portion (for example, the first diaphragm 84) of the intermediate storage body 45, and gas (for example, air) is supplied to the pressurizing chamber so that the pressure of the gas in the pressurizing chamber is used as an external force. You may give to a flexible part and pressurize the intermediate|middle storage part 61. In this case, a pressurizing mechanism for applying an external force by a pressurized gas to pressurize the inside of the intermediate reservoir and a head difference flow mechanism (head difference filling) may be used together.

・供給ポンプ74を備えなくてもよい。
・中間貯留体接続部62に接続される前の中間貯留体45は、供給室82の圧力が中間貯留部61の外側空間の圧力(大気圧)より高くなるように供給室82に予め液体が充填され、圧力室83の圧力が中間貯留部61の外側空間の圧力(大気圧)と同じか低くなるように圧力室83に予め液体が充填されていてもよい。
-The supply pump 74 may not be provided.
In the intermediate storage body 45 before being connected to the intermediate storage body connecting portion 62, liquid is previously stored in the supply chamber 82 so that the pressure of the supply chamber 82 becomes higher than the pressure (atmospheric pressure) of the outer space of the intermediate storage portion 61. The pressure chamber 83 may be filled with liquid in advance so that the pressure of the pressure chamber 83 is the same as or lower than the pressure (atmospheric pressure) of the outer space of the intermediate reservoir 61.

・液体収容体30が着脱可能な場合、液体収容体30が接続されていない状態で、充填動作を行ってもよい。この場合、上流側液体供給流路66に液体が充填された時点で上流側液体供給流路66に設けた開閉弁を閉じればよい。またはメインタンクに替えて、アタッチメントを装着した状態で上流側液体供給流路66への液体充填を行ってもよい。アタッチメントとしては、液体充填されていない袋体や大気連通部に気液分離膜を貼り付けたものが好適である。 -When the liquid container 30 is removable, the filling operation may be performed in a state where the liquid container 30 is not connected. In this case, the on-off valve provided in the upstream liquid supply passage 66 may be closed when the upstream liquid supply passage 66 is filled with the liquid. Alternatively, instead of the main tank, the upstream liquid supply channel 66 may be filled with the liquid with the attachment attached. As the attachment, a bag which is not filled with a liquid or one in which a gas-liquid separation membrane is attached to an atmosphere communicating portion is suitable.

・中間貯留部61を無くしてもよい。例えば液体収容袋に連通するチューブを導入針部64に接続して液体収容袋から上流側液体供給流路66へ液体を充填してもよい。
・圧力調整機構63を中間貯留体45ではなく、液体噴射部36に設けてもよい。
-The intermediate storage part 61 may be omitted. For example, a tube communicating with the liquid containing bag may be connected to the introduction needle portion 64 to fill the upstream liquid supply channel 66 with the liquid from the liquid containing bag.
The pressure adjusting mechanism 63 may be provided in the liquid ejecting unit 36 instead of the intermediate reservoir 45.

・押圧部材95をユーザーが手動で押して中間貯留体45を外側から加圧してもよい。また、中間貯留体45の第1ダイアフラム84をユーザーが手で押圧してもよい。
・液体収容体は、開放系のタンクに限定されない。例えば液体が充填された袋体と袋体を気体で加圧する加圧室とを備えたタイプの密閉系の液体収容体でもよい。
The user may manually press the pressing member 95 to pressurize the intermediate storage body 45 from the outside. Further, the user may manually press the first diaphragm 84 of the intermediate storage body 45.
-The liquid container is not limited to an open tank. For example, a closed type liquid container including a bag body filled with a liquid and a pressurizing chamber for pressurizing the bag body with gas may be used.

・液体収容体は液体噴射装置の筐体の外側に配置される外付けタイプでもよい。この場合、液体収容体は筐体の側面に取り付けられてもよいし、液体供給チューブを通じて筐体から離れた位置に配置されてもよい。 The liquid container may be an external type arranged outside the housing of the liquid ejecting apparatus. In this case, the liquid container may be attached to the side surface of the housing, or may be arranged at a position separated from the housing through the liquid supply tube.

・液体噴射装置は、シリアルプリンターに限定されず、液体噴射部が主走査方向と副走査方向との2方向に移動して媒体に液体を噴射するラテラル式プリンターでもよい。また、液体噴射部がターゲット(例えば媒体)の幅方向全域に液体を噴射可能な所定長さを有し、一定速度で搬送される搬送中の媒体に対して液体を噴射するラインプリンターでもよい。ラインプリンターの場合、液体噴射部を保持する保持部材の例えば液体噴射部側と異なる面(一例として上面)に中間貯留体を接続可能な中間貯留体接続部を設ければよい。この中間貯留体接続部は、液体噴射装置の筐体内または筐体外に配置された液体収容体と、筐体内の液体噴射部とを接続する液体供給流路の途中の位置に設けられる。 The liquid ejecting apparatus is not limited to the serial printer, and may be a lateral printer in which the liquid ejecting unit moves in two directions of the main scanning direction and the sub scanning direction to eject the liquid on the medium. Further, a line printer may be used in which the liquid ejecting unit has a predetermined length capable of ejecting the liquid over the entire width direction of the target (for example, the medium) and ejects the liquid onto the medium being conveyed at a constant speed. In the case of a line printer, an intermediate storage body connecting portion capable of connecting the intermediate storage body may be provided on, for example, a surface (upper surface as an example) different from the liquid ejection portion side of the holding member that holds the liquid ejection portion. The intermediate storage body connecting portion is provided at a position in the middle of a liquid supply flow path that connects the liquid container arranged inside or outside the housing of the liquid ejecting apparatus and the liquid ejecting portion inside the housing.

・液体噴射装置は、複合機に備えられたものではなく、印刷専用機でもよい。
・媒体は、用紙に限定されず、樹脂製のフィルムやシート、樹脂と金属の複合体フィルム(ラミネートフィルム)、織物、不織布、金属箔、金属フィルム、セラミックシートなどの媒体であってもよい。
The liquid ejecting apparatus may be a printing-only machine instead of being provided in the multifunction machine.
The medium is not limited to paper, and may be a resin film or sheet, a composite film of resin and metal (laminate film), a woven fabric, a non-woven fabric, a metal foil, a metal film, a ceramic sheet, or the like.

・液体噴射装置は、用紙等の平面状の媒体に印刷を行う液体噴射装置に限らず、例えばインクジェット方式で樹脂液滴を噴射して三次元立体物を成形する三次元立体物成形用の液体噴射装置でもよい。この場合、媒体は樹脂液滴の吐出対象の台紙又はシート状基板でもよい。 The liquid ejecting apparatus is not limited to a liquid ejecting apparatus that prints on a flat medium such as paper, but is a liquid for forming a three-dimensional three-dimensional object that ejects resin droplets by an inkjet method to form a three-dimensional three-dimensional object. It may be an injection device. In this case, the medium may be a mount or a sheet-shaped substrate on which the resin droplets are ejected.

11…複合機、12…液体噴射装置、13…画像読取装置、14…筐体、18…ヒンジ、26…カバー、30,30a〜30d…液体収容体、34…キャリッジ、36…液体噴射部、37…レール、39…搬送部、42…液体供給チューブ、45…中間貯留体、46…液体供給流路、50…制御部、51…流路形成部材、54…注入口、55…栓、57…液体収容部の一例としての液体収容室、60…液体供給機構、61…中間貯留部、62…中間貯留体接続部、63…圧力調整機構、64…導入針部、65…供給針部、66…上流側液体供給流路、67…下流側液体供給流路、68…供給口部、69…大気連通孔、70…ガイド板、71…ノズル、72…液室、73…開閉弁、74…供給ポンプ、75…メンテナンス装置、76…キャップ、77…流路、78…吸引ポンプ、79…方向切換弁、80…気体流路、81…大気開放弁、82…供給室、83…圧力室、84…第1ダイアフラム、85…第2ダイアフラム、86…導入口部、87…導出口部、88…連通孔、89…弁体、91…ばね、95…押圧部材、96…液体流動機構の一例としての加圧機構、97…液体流動機構の一例としての減圧機構、100…液体ボトル、110…ダイアフラム、111…液体貯留室、113…流路、M…媒体、X…走査方向、Y…搬送方向。 11... Multifunction device, 12... Liquid ejecting device, 13... Image reading device, 14... Housing, 18... Hinge, 26... Cover, 30, 30a to 30d... Liquid container, 34... Carriage, 36... Liquid ejecting section, 37... Rail, 39... Conveying part, 42... Liquid supply tube, 45... Intermediate storage body, 46... Liquid supply flow path, 50... Control part, 51... Flow path forming member, 54... Injection port, 55... Plug, 57 ... liquid storage chamber as an example of liquid storage portion, 60... liquid supply mechanism, 61... intermediate storage portion, 62... intermediate storage body connection portion, 63... pressure adjusting mechanism, 64... introduction needle portion, 65... supply needle portion, 66... Upstream liquid supply channel, 67... Downstream liquid supply channel, 68... Supply port, 69... Atmosphere communicating hole, 70... Guide plate, 71... Nozzle, 72... Liquid chamber, 73... Open/close valve, 74 ... Supply pump, 75... Maintenance device, 76... Cap, 77... Flow path, 78... Suction pump, 79... Direction switching valve, 80... Gas flow path, 81... Atmosphere release valve, 82... Supply chamber, 83... Pressure chamber , 84... First diaphragm, 85... Second diaphragm, 86... Inlet port portion, 87... Outlet port portion, 88... Communication hole, 89... Valve body, 91... Spring, 95... Pressing member, 96... Liquid flow mechanism Pressurization mechanism as an example, 97... Decompression mechanism as an example of liquid flow mechanism, 100... Liquid bottle, 110... Diaphragm, 111... Liquid storage chamber, 113... Flow path, M... Medium, X... Scan direction, Y... Transport direction.

Claims (8)

液体を噴射する液体噴射部と、
液体収容体が収容する前記液体を前記液体噴射部に供給可能に該液体収容体と該液体噴射部とを接続する液体供給流路であって、前記液体収容体と前記液体噴射部との間となる位置に、前記液体を貯留可能な中間貯留部を有する中間貯留体を接続可能な中間貯留体接続部を有する液体供給流路と、
を備える液体噴射装置に前記液体を充填する液体充填方法であって、
前記液体供給流路のうち前記中間貯留体接続部より上流側となる上流側液体供給流路内に該中間貯留体接続部から前記液体を流動させて、該上流側液体供給流路に該液体を充填する液体充填方法。
A liquid ejecting section for ejecting liquid,
A liquid supply flow path that connects the liquid container and the liquid ejecting unit such that the liquid contained in the liquid container can be supplied to the liquid ejecting unit, and is between the liquid container and the liquid ejecting unit. And a liquid supply flow path having an intermediate storage body connecting portion capable of connecting an intermediate storage body having an intermediate storage portion capable of storing the liquid,
A liquid filling method for filling the liquid into a liquid ejecting apparatus comprising:
The liquid is caused to flow from the intermediate reservoir connecting portion into the upstream liquid supply passage upstream of the intermediate reservoir connecting portion of the liquid supply passage, and the liquid is supplied to the upstream liquid supply passage. Liquid filling method for filling.
前記中間貯留部に前記液体が予め充填された前記中間貯留体を前記中間貯留体接続部に接続し、前記上流側液体供給流路に前記中間貯留部の前記液体を充填する請求項1に記載の液体充填方法。 The said intermediate|middle storage body with which the said intermediate|middle storage part was previously filled with the said liquid is connected to the said intermediate|middle storage body connection part, The said upstream side liquid supply flow path is filled with the said liquid of the said intermediate|middle storage part. Liquid filling method. 前記中間貯留体には、前記中間貯留部内が該中間貯留部の外側空間より圧力が高くなるように前記液体が予め充填されていることを特徴とする請求項2に記載の液体充填方法。 The liquid filling method according to claim 2, wherein the intermediate reservoir is pre-filled with the liquid such that a pressure inside the intermediate reservoir is higher than a pressure in an outer space of the intermediate reservoir. 前記液体供給流路のうち前記中間貯留体接続部より下流側となる下流側液体供給流路内に該中間貯留体接続部から前記液体を流動させて、該下流側液体供給流路に該液体を充填することを特徴とする請求項1〜請求項3のいずれか一項に記載の液体充填方法。 The liquid is flowed from the intermediate reservoir connecting portion into the downstream liquid supply passage that is downstream of the intermediate reservoir connecting portion in the liquid supply passage, and the liquid is supplied to the downstream liquid supply passage. The liquid filling method according to any one of claims 1 to 3, wherein the liquid filling method is used. 液体を噴射する液体噴射部と、
前記液体を収容可能な液体収容部と該液体収容部に該液体を外部から注入可能な注入口と該液体収容部を大気に連通させる大気連通孔とを有する液体収容体と、
前記液体収容体が収容する前記液体を前記液体噴射部に供給可能に該液体収容体と該液体噴射部とを接続する液体供給流路であって、前記液体収容体と前記液体噴射部との間となる位置に、前記液体を貯留可能な中間貯留部を有する中間貯留体を接続可能な中間貯留体接続部を有する液体供給流路と、
前記中間貯留体接続部に接続された前記中間貯留体の前記中間貯留部が貯留する前記液体を、前記液体供給流路のうち該中間貯留体接続部より上流側となる上流側液体供給流路内に流動させる液体流動機構と、
を備えることを特徴とする液体噴射装置。
A liquid ejecting section for ejecting liquid,
A liquid container having a liquid container capable of containing the liquid, an injection port capable of injecting the liquid into the liquid container from the outside, and an atmosphere communication hole for communicating the liquid container with the atmosphere;
A liquid supply flow path that connects the liquid container and the liquid ejecting unit so that the liquid contained in the liquid container can be supplied to the liquid ejecting unit, and includes a liquid container and the liquid ejecting unit. A liquid supply flow path having an intermediate storage body connection part capable of connecting an intermediate storage body having an intermediate storage part capable of storing the liquid, at a position between
An upstream side liquid supply flow path that is the upstream side of the intermediate storage body connection part in the liquid stored in the intermediate storage part of the intermediate storage body connected to the intermediate storage body connection part A liquid flow mechanism to flow inside,
A liquid ejecting apparatus comprising:
前記液体流動機構として、前記上流側液体供給流路より重力方向において上方となる位置に前記中間貯留体接続部を備えることを特徴とする請求項5に記載の液体噴射装置。 The liquid ejecting apparatus according to claim 5, wherein the liquid flow mechanism includes the intermediate storage body connecting portion at a position above the upstream liquid supply flow path in the gravity direction. 前記液体流動機構として、前記中間貯留体接続部に接続された前記中間貯留体の前記中間貯留部内の前記液体を加圧する加圧機構を備えることを特徴とする請求項5又は請求項6に記載の液体噴射装置。 The pressurizing mechanism for pressurizing the liquid in the intermediate storage part of the intermediate storage body connected to the intermediate storage body connection part is provided as the liquid flow mechanism. Liquid ejector. 前記液体流動機構として、前記上流側液体供給流路内を減圧する減圧機構を備えることを特徴とする請求項5〜請求項7のいずれか一項に記載の液体噴射装置。 The liquid ejecting apparatus according to any one of claims 5 to 7, wherein a depressurizing mechanism that depressurizes the inside of the upstream liquid supply flow path is provided as the liquid flowing mechanism.
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