JP6818634B2 - Liquid storage container and recording device for mounting the liquid storage container - Google Patents

Liquid storage container and recording device for mounting the liquid storage container Download PDF

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JP6818634B2
JP6818634B2 JP2017112022A JP2017112022A JP6818634B2 JP 6818634 B2 JP6818634 B2 JP 6818634B2 JP 2017112022 A JP2017112022 A JP 2017112022A JP 2017112022 A JP2017112022 A JP 2017112022A JP 6818634 B2 JP6818634 B2 JP 6818634B2
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liquid storage
inclined surface
liquid
storage container
recording device
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JP2017144745A (en
JP2017144745A5 (en
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岳穂 宮下
岳穂 宮下
小瀧　靖夫
小瀧　　靖夫
大橋　哲也
哲也 大橋
林　弘毅
弘毅 林
学 小原
学 小原
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Canon Inc
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Canon Inc
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Description

本発明は、液体を収納する液体収納容器、及び液体収納容器を装着する装置に関する。 The present invention relates to a liquid storage container for storing a liquid and a device for mounting the liquid storage container.

インクジェットプリンタに代表される記録装置には、液体収納容器（例えばインクタンク）が用いられる。このような記録装置においては、液体収納容器が収納する液体を液体吐出ヘッドに供給し、液体吐出ヘッドから記録媒体に吐出することによって、画像や文字等の記録を行う。 A liquid storage container (for example, an ink tank) is used in a recording device typified by an inkjet printer. In such a recording device, the liquid stored in the liquid storage container is supplied to the liquid discharge head, and the liquid is discharged from the liquid discharge head to the recording medium to record images, characters, and the like.

記録装置に用いられる液体収納容器を長時間放置していると、液体収納部の内部で液体に含まれる色材や樹脂等が沈殿し、画像や文字のムラにつながることがある。特に色材として顔料を用いた場合、顔料は沈殿しやすく、液体の濃度が液体収納容器の底面側で高くなってしまうことがある。 If the liquid storage container used for the recording device is left for a long time, the coloring material, resin, etc. contained in the liquid may precipitate inside the liquid storage unit, which may lead to unevenness of images and characters. In particular, when a pigment is used as the coloring material, the pigment tends to precipitate, and the concentration of the liquid may increase on the bottom surface side of the liquid storage container.

かかる課題に対して、液体収納容器内の液体を撹拌し、色材等の沈殿を抑制する方法がある。特許文献１には、液体吐出ヘッドと液体収納容器の間に設けられたポンプによって、液体収納容器内から供給管を介して液体を吸引し、供給管から吸引した液体を再度液体収納容器内に吹き込む方法が記載されている。これにより、液体収納容器の内部に対流を発生させて、撹拌を行うことができる。 To solve this problem, there is a method of stirring the liquid in the liquid storage container to suppress the precipitation of the coloring material or the like. In Patent Document 1, a pump provided between the liquid discharge head and the liquid storage container sucks the liquid from the inside of the liquid storage container through the supply pipe, and the liquid sucked from the supply pipe is put into the liquid storage container again. The method of blowing is described. As a result, convection can be generated inside the liquid storage container to perform stirring.

特許第４３３６５０５号公報Japanese Patent No. 43365505

液体収納容器を記録装置に装着する際に、液体収納容器を水平方向に移動させて装着させることがある。このような場合、装着時における液体収納容器の装着面（前面）に供給口が開口しており、この供給口に記録装置の供給管が挿入される方式が一般的である。また、重力方向下方に溜まる液体の使い切りの観点から、供給口は装着面の重力方向下方に配置され、かつ液体収納容器に挿入された供給管が重力方向下方に開口していることが求められる。このような構成において、特許文献１に記載のように供給管から液体収納容器内に液体を吹き込むと、液体は液体収納容器内の底面に吹きつけられ、様々な方向へ分散する。よって、液体収納容器内全体に行き渡るような液体の流れが発生しづらく、液体収納容器内の液体を良好に撹拌することが困難となる。 When mounting the liquid storage container on the recording device, the liquid storage container may be moved horizontally to be mounted. In such a case, a supply port is opened on the mounting surface (front surface) of the liquid storage container at the time of mounting, and the supply pipe of the recording device is generally inserted into this supply port. Further, from the viewpoint of using up the liquid that collects in the lower direction of gravity, the supply port is required to be arranged below the mounting surface in the direction of gravity, and the supply pipe inserted into the liquid storage container is required to open downward in the direction of gravity. .. In such a configuration, when the liquid is blown into the liquid storage container from the supply pipe as described in Patent Document 1, the liquid is sprayed on the bottom surface of the liquid storage container and dispersed in various directions. Therefore, it is difficult to generate a flow of the liquid that spreads throughout the liquid storage container, and it is difficult to satisfactorily stir the liquid in the liquid storage container.

従って、本発明は、内部の液体を良好に撹拌することが可能な液体収納容器及び該液体収納容器を装着する記録装置を提供することを目的とする。 Therefore, an object of the present invention is to provide a liquid storage container capable of satisfactorily stirring the liquid inside and a recording device equipped with the liquid storage container.

上記課題は、以下の本発明によって解決される。即ち本発明は、記録装置に装着可能な、液体収納部に液体を収納する液体収納容器であって、前記記録装置に装着される際に前記記録装置側の面となる第一の面と、前記第一の面と反対側の面である第二の面とを有し、前記第一の面には、液体を供給する供給口が開口しており、前記液体収納部は、重力方向下方の面となる底面に、前記第一の面側から前記第二の面側に向かって重力方向下方に傾斜する第一の傾斜面と、前記第一の面側から前記第二の面側に向かって重力方向上方に傾斜する第二の傾斜面と、前記第一の面側から第二の面側に向かって重力方向上方に傾斜する第三の傾斜面とを、前記第一の面側からこの順に有し、前記第二の傾斜面の水平方向に対する傾斜角は、前記第三の傾斜面の水平方向に対する傾斜角と異なることを特徴とする液体収納容器である。 The above problem is solved by the following invention. That is, the present invention is a liquid storage container that can be attached to a recording device and stores liquid in a liquid storage unit, and has a first surface that becomes a surface on the recording device side when attached to the recording device . It has a second surface that is opposite to the first surface, and a supply port for supplying liquid is opened in the first surface, and the liquid storage portion is downward in the direction of gravity. On the bottom surface to be the surface of, a first inclined surface that inclines downward in the direction of gravity from the first surface side toward the second surface side, and from the first surface side to the second surface side. The second inclined surface that inclines upward in the direction of gravity and the third inclined surface that inclines upward in the direction of gravity from the first surface side to the second surface side are formed on the first surface side. The liquid storage container is provided in this order from the above, and the inclination angle of the second inclined surface with respect to the horizontal direction is different from the inclination angle of the third inclined surface with respect to the horizontal direction.

本発明によれば、内部の液体を良好に撹拌することが可能な液体収納容器及び該液体収納容器を装着する記録装置を提供することができる。 According to the present invention, it is possible to provide a liquid storage container capable of satisfactorily stirring the liquid inside and a recording device equipped with the liquid storage container.

液体収納容器が装着された記録装置を示す図。The figure which shows the recording apparatus which attached the liquid storage container. 液体収納容器を示す図。The figure which shows the liquid storage container. 液体収納部の内部の液体を撹拌する様子を示す図。The figure which shows the state of stirring the liquid inside a liquid storage part. 液体収納部の内部の液体を撹拌する様子を示す図。The figure which shows the state of stirring the liquid inside a liquid storage part. 液体収納部の第一の傾斜面及び第二の傾斜面を含む部分を拡大した図。The enlarged view of the part including the 1st inclined surface and the 2nd inclined surface of a liquid storage part. 液体収納部の内部の液体を撹拌する様子を示す図。The figure which shows the state of stirring the liquid inside a liquid storage part. 液体収納部の第一の傾斜面を示す図。The figure which shows the 1st inclined surface of a liquid storage part. 液体収納部の第一の傾斜面及び第二の傾斜面を含む部分を拡大した図。The enlarged view of the part including the 1st inclined surface and the 2nd inclined surface of a liquid storage part.

本発明の実施形態について、図面を参照しながら説明する。 An embodiment of the present invention will be described with reference to the drawings.

図１に、液体収納容器が装着された記録装置を示す。図１に示す記録装置は、記録装置の液体収納容器装着部や液体吐出ヘッドの付近を拡大したものである。記録装置１には、液体収納容器９が備えられている。液体収納容器９には、記録装置１の供給管４が挿入されている。供給管４は、液体収納容器内の液体を導出する液体導出口２と、経路７から液体収納容器内に空気を取り入れる空気導入口３とを備えている。供給管４を経由して導出される液体は、経路６を通って液体吐出ヘッド５側に供給される。 FIG. 1 shows a recording device equipped with a liquid storage container. The recording device shown in FIG. 1 is an enlarged view of the vicinity of the liquid storage container mounting portion and the liquid discharge head of the recording device. The recording device 1 is provided with a liquid storage container 9. The supply pipe 4 of the recording device 1 is inserted into the liquid storage container 9. The supply pipe 4 includes a liquid outlet 2 for leading out the liquid in the liquid storage container, and an air introduction port 3 for taking in air into the liquid storage container from the path 7. The liquid led out via the supply pipe 4 is supplied to the liquid discharge head 5 side through the path 6.

液体収納容器内において、供給管４の空気導入口３は重力方向上向きに開口し、液体導出口２は重力方向下向きに開口していることが好ましい。供給管４の根元で空気導入口３と連通している経路７において、供給管４と反対側の端部は大気と連通している。これにより、液体収納容器内において、液体導出口２から液体が吸引された際、空気導入口３から空気が入り込む。入り込んだ空気は液体収納容器内の重力方向上方に抜ける。このようにして、液体収納容器内で気液交換が行われる。液体導出口２を液体収納容器内で重力方向下向きに開口させることで、液体収納容器内の液体を効率よく導出することができる。尚、図１に示す供給管４は、液体導出口２と空気導入口３の２流路を一体で備えているが、液体導出口２と空気導入口３は別の部材に設けられていてもよい。経路６の先にはダイアフラム８があり、その先にバルブと、液体を吐出する液体吐出ヘッド５がある。液体吐出ヘッド５は、エネルギー発生素子や吐出口を有し、エネルギー発生素子が発生したエネルギーによって吐出口から液体を吐出し、紙等の記録媒体に液体を着弾させることで記録を行う。 In the liquid storage container, it is preferable that the air inlet 3 of the supply pipe 4 opens upward in the direction of gravity and the liquid outlet 2 opens downward in the direction of gravity. In the path 7 that communicates with the air inlet 3 at the base of the supply pipe 4, the end opposite to the supply pipe 4 communicates with the atmosphere. As a result, when the liquid is sucked from the liquid outlet 2 in the liquid storage container, air enters from the air introduction port 3. The air that has entered escapes upward in the direction of gravity inside the liquid storage container. In this way, gas-liquid exchange is performed in the liquid storage container. By opening the liquid outlet 2 downward in the direction of gravity in the liquid storage container, the liquid in the liquid storage container can be efficiently drawn out. The supply pipe 4 shown in FIG. 1 is integrally provided with two flow paths of the liquid outlet 2 and the air inlet 3, but the liquid outlet 2 and the air inlet 3 are provided in different members. May be good. There is a diaphragm 8 at the end of the path 6, and a valve and a liquid discharge head 5 for discharging the liquid at the end of the diaphragm 8. The liquid discharge head 5 has an energy generating element and a discharge port, and discharges the liquid from the discharge port by the energy generated by the energy generating element, and records by landing the liquid on a recording medium such as paper.

図２を用いて、液体収納容器の説明を行う。まず、図２（ａ）に、液体収納容器９の分解斜視図を示す。液体収納容器９は、液体を収納する液体収納部を有する筐体１０と、液体収納容器の第一の面１５に装着されるジョイント部材２０とを有する。ジョイント部材２０には開口２１が開口している。開口２１は、第一の面１５の供給口１７と対応した場所に位置しており、開口２１も供給口の一部と見なすことができる。液体収納容器９において、記録装置に装着される際に記録装置側の面となる面（装着面）が、第一の面１５である。そしてこの第一の面１５と液体収納部を挟んで反対側の面が第二の面１６である。第一の面１５と第二の面１６とは、下方の面である第三の面１１と、上方の面である第四の面１２と、側面である第五の面１３及び第六の面１４によってつながっている。 The liquid storage container will be described with reference to FIG. First, FIG. 2A shows an exploded perspective view of the liquid storage container 9. The liquid storage container 9 has a housing 10 having a liquid storage portion for storing the liquid, and a joint member 20 mounted on the first surface 15 of the liquid storage container. The joint member 20 has an opening 21. The opening 21 is located at a position corresponding to the supply port 17 on the first surface 15, and the opening 21 can also be regarded as a part of the supply port. In the liquid storage container 9, the surface (mounting surface) that becomes the surface on the recording device side when mounted on the recording device is the first surface 15. The surface on the opposite side of the first surface 15 and the liquid storage portion is the second surface 16. The first surface 15 and the second surface 16 are the lower surface, the third surface 11, the upper surface, the fourth surface 12, and the side surfaces, the fifth surface 13 and the sixth surface. It is connected by a surface 14.

図２（ａ）のＡ−Ａ´における液体収納容器の断面図を図２（ｂ）に示す。上述のように、液体収納容器は、装着方向の前面となる第一の面１５と、その反対側の第二の面１６、さらに第三の面１１と第四の面１２とを有する。第一の面１５には供給口１７が開口している。供給口１７は、記録装置に装着される際に、重力方向における第一の面１５の中心線よりも重力方向下方の位置に開口している。供給口１７は、供給管が挿入される方向に沿って延在している。液体収納容器９の筐体１０の内部には液体収納部１８がある。液体収納部１８は、内部に液体を収納しており、液体収納容器を記録装置に装着した際に重力方向下方の面となる底面２２を有する。底面２２は、第一の面１５側から第二の面１６側に向かって重力方向下方に傾斜する第一の傾斜面２３と、第一の面１５側から第二の面１６側に向かって重力方向上方に傾斜する第二の傾斜面２４とを、第一の面１５側からこの順に有する。即ち、底面２２の中で、第一の傾斜面２３は第二の傾斜面２４よりも第一の面１５に近い位置にある。第一の面１５と第二の面１６とは間隙をあけて配置されている。図２（ｂ）では、第一の傾斜面２３が第一の面１５から底面に向かって傾斜している状態が示されているが、第一の傾斜面２３は第二の傾斜面２４よりも第一の面１５側にあればよい。例えば、第一の面１５から底面と平行方向な面が延びていて、その先に、即ち第一の面１５とは離間して第一の傾斜面２３が配置されていてもよい。また、第二の傾斜面２４についても同様であり、図２（ｂ）に示すように第二の面１６から離間して形成されていてもよいし、第二の面１６から底面に向かって傾斜する面であってもよい。図２（ｂ）では、底面２２のうち第二の傾斜面２４よりも第二の面１６に近い側に、第一の面１５側から第二の面１６側に向かって重力方向上方に傾斜する第三の傾斜面２５がある。 A cross-sectional view of the liquid storage container in AA'of FIG. 2A is shown in FIG. 2B. As described above, the liquid storage container has a first surface 15 which is a front surface in the mounting direction, a second surface 16 on the opposite side thereof, and a third surface 11 and a fourth surface 12. A supply port 17 is open on the first surface 15. The supply port 17 opens at a position below the center line of the first surface 15 in the direction of gravity when it is attached to the recording device. The supply port 17 extends along the direction in which the supply pipe is inserted. There is a liquid storage unit 18 inside the housing 10 of the liquid storage container 9. The liquid storage unit 18 stores the liquid inside, and has a bottom surface 22 which is a lower surface in the direction of gravity when the liquid storage container is attached to the recording device. The bottom surface 22 has a first inclined surface 23 that inclines downward in the direction of gravity from the first surface 15 side toward the second surface 16 side, and the bottom surface 22 from the first surface 15 side toward the second surface 16 side. A second inclined surface 24 that inclines upward in the direction of gravity is provided in this order from the first surface 15 side. That is, in the bottom surface 22, the first inclined surface 23 is located closer to the first surface 15 than the second inclined surface 24. The first surface 15 and the second surface 16 are arranged with a gap. FIG. 2B shows a state in which the first inclined surface 23 is inclined from the first surface 15 toward the bottom surface, but the first inclined surface 23 is more inclined than the second inclined surface 24. Also needs to be on the first surface 15 side. For example, a surface parallel to the bottom surface may extend from the first surface 15, and the first inclined surface 23 may be arranged ahead of the first surface 15, that is, separated from the first surface 15. The same applies to the second inclined surface 24, which may be formed apart from the second surface 16 as shown in FIG. 2B, or from the second surface 16 toward the bottom surface. It may be an inclined surface. In FIG. 2B, the bottom surface 22 is inclined upward in the direction of gravity from the first surface 15 side to the second surface 16 side on the side closer to the second surface 16 than the second inclined surface 24. There is a third inclined surface 25.

第一の面１５において、供給口１７の部分にはジョイント部材２０が溶着されている。ジョイント部材２０には供給口ともなる開口２１が開口している。開口２１には、弾性部材２６、バルブ２７、及びシール部材２８がこの順に組み込まれている。液体収納容器が記録装置に装着されていない状態では、バルブ２７は弾性部材２６によってシール部材２８側に付勢されるよう配置されており、開口２１の先端にはシール部材２８を固定するためキャップ２９が取り付けられる。シール部材２８は柔軟性を有するものであり、例えばブチルゴム等のゴム材や、エラストマー等の熱可塑性樹脂材で形成する。シール部材２８は中心が開口した環状の形状となっており、その開口はバルブ２７が当接することでシールされる。さらに、シール部材２８の外周をジョイント部材２０の内壁に当接させることで、シール部材２８とジョイント部材２０の気密性が確保できる。シール部材２８における筐体１０内部側の開口周縁には、リップ状の突起３０が有り、この突起３０にバルブ２７を当接させることで密着性を向上させる。このようにシール部材２８の外周をジョイント部材２０と密着させ、シール部材２８の開口をバルブ２７と密着させることで、液体収納容器内部からの液体漏れや液体の蒸発による液体の変性を抑制することができる。尚、ここでは、弾性部材２６としてばねを用いた弁ばね方式で供給口を開閉する例を示したが、例えば供給口をゴム栓等で塞ぐ方式であっても、記録装置に装着していないときに供給口１７をシールし、記録装置に装着した時に開放するものであればよい。 On the first surface 15, the joint member 20 is welded to the portion of the supply port 17. The joint member 20 has an opening 21 that also serves as a supply port. An elastic member 26, a valve 27, and a seal member 28 are incorporated in the opening 21 in this order. When the liquid storage container is not attached to the recording device, the valve 27 is arranged so as to be urged toward the seal member 28 by the elastic member 26, and a cap is provided at the tip of the opening 21 to fix the seal member 28. 29 is attached. The sealing member 28 has flexibility, and is formed of, for example, a rubber material such as butyl rubber or a thermoplastic resin material such as an elastomer. The sealing member 28 has an annular shape with an opening at the center, and the opening is sealed when the valve 27 abuts. Further, by bringing the outer circumference of the seal member 28 into contact with the inner wall of the joint member 20, the airtightness of the seal member 28 and the joint member 20 can be ensured. A lip-shaped protrusion 30 is provided on the peripheral edge of the opening on the inner side of the housing 10 in the seal member 28, and the valve 27 is brought into contact with the protrusion 30 to improve the adhesion. By bringing the outer periphery of the seal member 28 into close contact with the joint member 20 and the opening of the seal member 28 in close contact with the valve 27 in this way, it is possible to suppress liquid leakage from the inside of the liquid storage container and liquid denaturation due to liquid evaporation. Can be done. Although an example of opening and closing the supply port by a valve spring method using a spring as the elastic member 26 is shown here, for example, even if the supply port is closed with a rubber stopper or the like, it is not attached to the recording device. The supply port 17 may be sealed at times and opened when attached to the recording device.

液体収納容器の液体収納部では、例えば長時間の放置によって液体中に色材等が沈殿する場合がある。特に色材が顔料であり、液体が顔料を含有している場合、液体内で沈殿が発生しやすい。図２（ｃ）に、液体収納部の内部で色材が沈殿した様子を模式的に示す。ここでは模式的に液体が三段階の層に分離した様子を示す。底面に近い側の領域３１では、色材が沈殿して溜まりやすくなっているので、色材濃度の高い領域となっている。その上方の領域３２では色材は平均的な濃度であり、最も上面に近い側の領域３３では、色材濃度の低い領域となっている。このような状態で液体収納容器から液体吐出ヘッドに液体を供給して記録を行うと、形成する画像や文字にムラが発生する。例えば、初期に形成した画像の色は濃い一方、後半に形成した画像の色は薄くなることがある。このようなことを抑制する為にも、液体収納部では液体の撹拌を行う必要がある。 In the liquid storage portion of the liquid storage container, for example, a coloring material or the like may precipitate in the liquid when left for a long time. In particular, when the coloring material is a pigment and the liquid contains the pigment, precipitation is likely to occur in the liquid. FIG. 2C schematically shows how the coloring material has settled inside the liquid storage unit. Here, the state in which the liquid is schematically separated into three layers is shown. In the region 31 on the side closer to the bottom surface, the coloring material is likely to settle and accumulate, so that the region has a high density of the coloring material. In the region 32 above it, the colorant has an average density, and in the region 33 closest to the upper surface, the colorant density is low. If liquid is supplied from the liquid storage container to the liquid discharge head and recording is performed in such a state, unevenness occurs in the formed images and characters. For example, the color of the image formed in the early stage may be dark, while the color of the image formed in the latter half may be light. In order to suppress such a situation, it is necessary to stir the liquid in the liquid storage unit.

図３に、液体収納容器の液体収納部を撹拌する様子を示す。記録装置１は、液体収納容器内の液体を吸引する、または液体収納容器内に液体を吹き込む為のダイアフラム８を有する。ダイアフラム８と液体吐出ヘッド５との間にはバルブが設けられ、撹拌時にはこのバルブが閉じられる。 FIG. 3 shows how the liquid storage portion of the liquid storage container is agitated. The recording device 1 has a diaphragm 8 for sucking the liquid in the liquid storage container or blowing the liquid into the liquid storage container. A valve is provided between the diaphragm 8 and the liquid discharge head 5, and the valve is closed during stirring.

まず、記録装置によってダイアフラム８を伸ばしたとき、図３（ａ）に示すように、供給口１７から、液体収納部の内部の液体が経路６を介してダイアフラム８内に吸引される。このとき、供給口１７が第一の面１５の重力方向下方に開口していると、色材等が沈殿しやすい底面側の液体を吸引することができる。よって、供給口１７は、第一の面１５のうち重力方向で中心よりも下側に開口していることが好ましい。 First, when the diaphragm 8 is extended by the recording device, as shown in FIG. 3A, the liquid inside the liquid storage portion is sucked into the diaphragm 8 from the supply port 17 through the path 6. At this time, if the supply port 17 is opened downward in the direction of gravity of the first surface 15, the liquid on the bottom surface side where the coloring material or the like is likely to settle can be sucked. Therefore, it is preferable that the supply port 17 is opened below the center in the direction of gravity of the first surface 15.

続いて、記録装置によってダイアフラム８が縮められると、図３（ｂ）に示すように、吸引された液体が経路６を介して液体収納部側に逆流し、供給口１７より液体収納部の内部に吹き込まれる。この液体収納部内からの液体の吸引と、その逆の液体収納部内への液体の吹き込みによって、液体収納部の底面側に溜まった色材等を液体収納部内の全域にまき散らし、液体の撹拌を行う。即ち、液体収納部の液体は、記録装置の内部に一旦吸引され、その後で液体収納部に戻されることで、再び液体収納部に供給される。このようにして、液体の撹拌を行う。 Subsequently, when the diaphragm 8 is contracted by the recording device, as shown in FIG. 3B, the sucked liquid flows back to the liquid storage portion side through the path 6, and the inside of the liquid storage portion is from the supply port 17. Is blown into. By sucking the liquid from the inside of the liquid storage and blowing the liquid into the liquid storage, the coloring material and the like accumulated on the bottom surface of the liquid storage are scattered over the entire area of the liquid storage, and the liquid is agitated. .. That is, the liquid in the liquid storage unit is once sucked into the recording device and then returned to the liquid storage unit to be supplied to the liquid storage unit again. In this way, the liquid is agitated.

次に、液体の撹拌と底面の傾斜面との関係を、図４を用いて説明する。液体は、供給管４の開口３４から液体収納部内に吹き込まれる。供給管４の開口３４は、重力方向下向きに開口していることが好ましい。液体収納部内に吹き込まれた液体は、第一の傾斜面２３によって、重力方向下方に、かつ第一の面１５から第二の面１６に向かって勢いよく流れる。即ち、供給口１７から供給管４を介して液体収納部に供給される液体は、まず、第一の傾斜面２３に沿って流れる。この点から、液体収納部に挿入された供給管４の開口３４は、第一の傾斜面２３と対向するように、第一の傾斜面２３の重力方向上方に開口していることが好ましい。言い換えれば、第一の傾斜面２３は、記録装置が有する供給管４が供給口１７に挿入された際に、供給管４の開口３４と対向する位置にあることが好ましい。第二の面１６に向かって流れた液体は、次に第二の傾斜面２４によって、重力方向上方に、かつ第二の面１６に向かって吹き上がる。即ち、第一の傾斜面２３に沿って流れた液体は、そのまま第二の面１６に向かって流れ、第二の傾斜面２４に到達すると第二の傾斜面２４に沿って重力方向上方に流れる。このとき、流れる液体は色材等が多く沈殿した領域３１を通って吹き上がるので、領域３１の液体を液体収納部の全体に拡散することができる。このように、本発明の液体収納部は、底面に第一の傾斜面２３と第二の傾斜面２４とを第一の面１５側からこの順に有することで、内部の液体を良好に撹拌することができる。 Next, the relationship between the stirring of the liquid and the inclined surface of the bottom surface will be described with reference to FIG. The liquid is blown into the liquid storage portion through the opening 34 of the supply pipe 4. The opening 34 of the supply pipe 4 is preferably opened downward in the direction of gravity. The liquid blown into the liquid storage portion flows vigorously downward in the direction of gravity and from the first surface 15 to the second surface 16 by the first inclined surface 23. That is, the liquid supplied from the supply port 17 to the liquid storage portion via the supply pipe 4 first flows along the first inclined surface 23. From this point, it is preferable that the opening 34 of the supply pipe 4 inserted into the liquid storage portion opens upward in the direction of gravity of the first inclined surface 23 so as to face the first inclined surface 23. In other words, the first inclined surface 23 is preferably located at a position facing the opening 34 of the supply pipe 4 when the supply pipe 4 of the recording device is inserted into the supply port 17. The liquid flowing toward the second surface 16 is then blown up by the second inclined surface 24 in the direction of gravity and toward the second surface 16. That is, the liquid that has flowed along the first inclined surface 23 flows toward the second surface 16 as it is, and when it reaches the second inclined surface 24, it flows upward in the direction of gravity along the second inclined surface 24. .. At this time, since the flowing liquid is blown up through the region 31 in which a large amount of coloring material or the like is precipitated, the liquid in the region 31 can be diffused to the entire liquid storage portion. As described above, the liquid storage portion of the present invention has the first inclined surface 23 and the second inclined surface 24 on the bottom surface in this order from the first surface 15 side, so that the liquid inside can be agitated satisfactorily. be able to.

図５を用い、第一の傾斜面２３及び第二の傾斜面２４についてさらに詳細に説明を行う。 The first inclined surface 23 and the second inclined surface 24 will be described in more detail with reference to FIG.

第一の傾斜面２３は、液体収納部に吹き込まれる液体を、重力方向下方に、かつ第一の面１５から第二の面１６に向かって勢いを付けて流す役割を果たす。液体収納部の内部において、第一の傾斜面２３と水平面とがなす角度θ１が大きすぎると、液体収納部に吹き込まれた液体と第一の傾斜面２３とが接触しづらくなり、上述の勢いが付きにくくなる。この点から、角度θ１は４５°以下とすることが好ましい。一方で、角度θ１が小さすぎると、液体の第二の面１６に向かう勢いが付きづらくなる。この点から、角度θ１は１０°以上とすることが好ましい。尚、第一の面１５には、供給口１７が開口している。供給口１７は、第一の面１５を貫通するように延在している。この供給口１７の延在方向は、水平面と平行である。即ち、角度θ１は、第一の傾斜面２３と、供給口１７の延在方向に平行な面とがなす角度ともいえる。 The first inclined surface 23 serves to flow the liquid blown into the liquid storage portion downward in the direction of gravity and with a force from the first surface 15 to the second surface 16. If the angle θ1 formed by the first inclined surface 23 and the horizontal plane is too large inside the liquid storage portion, it becomes difficult for the liquid blown into the liquid storage portion to come into contact with the first inclined surface 23, and the above-mentioned momentum It becomes difficult to attach. From this point, the angle θ1 is preferably 45 ° or less. On the other hand, if the angle θ1 is too small, it becomes difficult for the liquid to gain momentum toward the second surface 16. From this point, the angle θ1 is preferably 10 ° or more. The supply port 17 is open on the first surface 15. The supply port 17 extends so as to penetrate the first surface 15. The extending direction of the supply port 17 is parallel to the horizontal plane. That is, the angle θ1 can be said to be an angle formed by the first inclined surface 23 and the surface parallel to the extending direction of the supply port 17.

第二の傾斜面２４は、第一の傾斜面２３によって第二の面１６側に向かって流れてくる液体を、重力方向上方に、かつ再度第二の面１６に向かう方向に吹き上げる役割を果たす。この液体の流れにより、濃度の高い領域３１の液体を、平均的な濃度の領域３２、さらには低い濃度の領域３３に侵入させ、撹拌を行うことができる。また、領域３３に到達すると、吹き上げられた液体が図４に示すように第一の面１５及び第二の面１６の方向に分散する。この結果、液体収納部の全体で液体が撹拌される。液体収納部の内部において、第二の傾斜面２４と鉛直面（水平面に垂直な方向な面、即ち重力方向に平行な面）とがなす角度θ２が小さすぎると、第一の傾斜面２３から流れてくる液体に対して、第二の傾斜面２４が垂直に近い方向に立つことになる。よって、液体の流れが第二の傾斜面２４に衝突して失速、分散し、液体を重力方向上方に吹き上げたり、第二の面側に移動させたりすることが難しくなる。この点から、角度θ２は３０°以上とすることが好ましい。一方で、角度θ２が大きすぎると、第二の面１６側への流れは確保できるが、重力方向上方に吹き上げることが難しくなる。この点から、角度θ２は６０°以下とすることが好ましい。尚、供給口１７の延在方向に対して垂直な面は、鉛直面と平行である。即ち、角度θ２は、第二の傾斜面２４と、供給口１７の延在方向に対して垂直な面とがなす角度ともいえる。 The second inclined surface 24 plays a role of blowing up the liquid flowing toward the second surface 16 side by the first inclined surface 23 upward in the direction of gravity and again in the direction toward the second surface 16. .. This flow of liquid allows the liquid in the high-concentration region 31 to penetrate into the average-concentration region 32 and further into the low-concentration region 33 for stirring. Further, when the region 33 is reached, the blown-up liquid is dispersed in the directions of the first surface 15 and the second surface 16 as shown in FIG. As a result, the liquid is agitated throughout the liquid compartment. If the angle θ2 formed by the second inclined surface 24 and the vertical surface (the surface perpendicular to the horizontal plane, that is, the surface parallel to the direction of gravity) is too small inside the liquid storage portion, the angle θ2 formed from the first inclined surface 23 The second inclined surface 24 stands in a direction close to vertical with respect to the flowing liquid. Therefore, the flow of the liquid collides with the second inclined surface 24 and stalls and disperses, making it difficult to blow the liquid upward in the direction of gravity or move it to the second surface side. From this point, the angle θ2 is preferably 30 ° or more. On the other hand, if the angle θ2 is too large, the flow to the second surface 16 side can be secured, but it becomes difficult to blow up in the direction of gravity. From this point, the angle θ2 is preferably 60 ° or less. The plane perpendicular to the extending direction of the supply port 17 is parallel to the vertical plane. That is, the angle θ2 can be said to be an angle formed by the second inclined surface 24 and the surface perpendicular to the extending direction of the supply port 17.

尚、第一の傾斜面２３や第二の傾斜面２４は理想的には直線的に延在しており、上述の説明もこれを前提としているが、実際には湾曲していることも想定される。例えば筐体１０がブロー成形で製造されている場合には、第二の傾斜面２４は湾曲しやすい。この場合、第二の傾斜面２４と鉛直面とがなす角度θ２は、第二の傾斜面２４の重力方向の高さを「ｈ」とし、第二の傾斜面の重力方向の高さの中間点、即ち「ｈ／２」の点における第二の傾斜面２４の接線が鉛直面となす角度である。第一の傾斜面２３と水平面とがなす角度θ１も同様に考え、第一の傾斜面２３が湾曲している場合、角度θ１は第一の傾斜面の重力方向の高さの中間点における第一の傾斜面の接線が水平面となす角度である。 The first inclined surface 23 and the second inclined surface 24 ideally extend linearly, and the above description presupposes this, but it is also assumed that they are actually curved. Will be done. For example, when the housing 10 is manufactured by blow molding, the second inclined surface 24 is likely to be curved. In this case, the angle θ2 formed by the second inclined surface 24 and the vertical surface is intermediate between the height of the second inclined surface 24 in the gravity direction and the height of the second inclined surface 24 in the gravity direction. The angle at which the tangent of the second inclined surface 24 at the point, that is, the "h / 2" point, is the vertical plane. The angle θ1 formed by the first inclined surface 23 and the horizontal plane is also considered in the same manner, and when the first inclined surface 23 is curved, the angle θ1 is the first at the midpoint of the height of the first inclined surface in the direction of gravity. The angle at which the tangent of one inclined surface forms a horizontal plane.

上述のように、第二の傾斜面２４は、第一の傾斜面２３によって第二の面１６に向かって流れてくる液体を、重力方向上方に、かつ第二の面１６に向けて吹き上げる役割を果たすものである。吹き上がった液体は、第一の面１５と第二の面１６の方向に分散し、液体収納部の内部全体の撹拌を行う。ここで、図６に示すように、吹き上げられる液体は、第二の傾斜面２４によって第二の面１６方向の成分を有しており、吹き上げられた後は第一の面側よりも第二の面側に流れやすい性質を持つ。このことを考慮し、液体収納部の内部の全体を良好に撹拌する為に、液体が液面３５に到達する位置３６を、第一の面１５と第二の面１６の中間点か、もしくは中間点よりも第一の面１５側の位置とすることが好ましい。即ち、第一の面１５と第二の面１６との水平方向の距離を「Ｌ」とすると、液体が液面に到達する位置３６は、第一の面１５から「Ｌ／２」の位置か、もしくは「Ｌ／２」の位置よりも第一の面１５に近い位置であることが好ましい。図６では、位置３６が「Ｌ／２」の位置、即ち中間点に位置している様子を示している。 As described above, the second inclined surface 24 has a role of blowing the liquid flowing toward the second surface 16 by the first inclined surface 23 upward in the direction of gravity and toward the second surface 16. It fulfills. The blown-up liquid is dispersed in the directions of the first surface 15 and the second surface 16 to stir the entire inside of the liquid storage portion. Here, as shown in FIG. 6, the liquid to be blown up has a component in the direction of the second surface 16 by the second inclined surface 24, and after being blown up, it is second than the first surface side. It has the property of easily flowing to the surface side of. In consideration of this, in order to satisfactorily stir the entire inside of the liquid storage portion, the position 36 where the liquid reaches the liquid surface 35 is set to the midpoint between the first surface 15 and the second surface 16 or The position is preferably located on the first surface 15 side of the intermediate point. That is, assuming that the horizontal distance between the first surface 15 and the second surface 16 is "L", the position 36 where the liquid reaches the liquid surface is the position "L / 2" from the first surface 15. Alternatively, it is preferable that the position is closer to the first surface 15 than the position of "L / 2". FIG. 6 shows that the position 36 is located at the “L / 2” position, that is, at the intermediate point.

ここで、図６に示すように、第一の面１５から第二の傾斜面２４の重力方向で最下方の点３７までの水平方向の距離を「Ｘ」とし、点３７から液面３５までの重力方向の高さを「Ｈ」とする。このとき、「Ｘ」を「（Ｌ／２）／２−Ｈｔａｎθ２≦Ｘ≦Ｌ／２−Ｈｔａｎθ２」とすることで、上述のように、位置３６を第一の面１５から「Ｌ／２」の位置か、もしくは「Ｌ／２」の位置よりも第一の面１５に近い位置とすることができる。 Here, as shown in FIG. 6, the horizontal distance from the first surface 15 to the lowest point 37 in the gravity direction of the second inclined surface 24 is set to "X", and the distance from the point 37 to the liquid level 35 Let the height in the direction of gravity be "H". At this time, by setting "X" to "(L / 2) /2-Htanθ2≤X≤L / 2-Htanθ2", the position 36 is set to "L / 2" from the first surface 15 as described above. Or a position closer to the first surface 15 than the position of "L / 2".

尚、吹き上げられた液体は、必ずしも液面３５にまで到達する必要はない。液体が液面３５にまで到達せず、例えば液面３５の重力方向やや下方で留まる場合、液体が液面に到達する位置３６とは、第二の傾斜面２４から吹き上げられた液体がそのまま直線的に液面３５に到達したと仮定した位置と考える。 The blown-up liquid does not necessarily have to reach the liquid level 35. When the liquid does not reach the liquid level 35, for example, stays slightly below the gravity direction of the liquid level 35, the position 36 where the liquid reaches the liquid level is a straight line as the liquid blown up from the second inclined surface 24. It is considered that the position is assumed to have reached the liquid level 35.

図４に示す液体収納部において、図中「Ａ」で示す方向から供給管４を見た図を図７に示す。図７（ａ）に示すように、供給管４の開口３４からは液体が吹き込まれる。吹き込まれた液体は第一の傾斜面２３にあたり、第二の傾斜面に向かって流れる。ここで、図７（ｂ）に示すように、第一の傾斜面は側壁３８を備えていることが好ましい。側壁３８を備えていることで、液体の流れを規制し、第一の傾斜面から第二の傾斜面に向かう流れを高めることができ、撹拌の効率が高まる。 FIG. 7 shows a view of the supply pipe 4 from the direction indicated by "A" in the liquid storage portion shown in FIG. As shown in FIG. 7A, the liquid is blown from the opening 34 of the supply pipe 4. The blown liquid hits the first inclined surface 23 and flows toward the second inclined surface. Here, as shown in FIG. 7B, it is preferable that the first inclined surface includes the side wall 38. By providing the side wall 38, it is possible to regulate the flow of the liquid and increase the flow from the first inclined surface to the second inclined surface, and the efficiency of stirring is increased.

液体収納部を形成する筐体をブロー成形で形成すると、図８に示すように第一の傾斜面２３と第二の傾斜面２４との間や第二の傾斜面２４付近が肉厚となる場合がある。即ち、図８の「ｔ」で示す第三の面１１と底面２２との間の厚みが厚くなる。この結果、ジョイント部材２０と底面２２との間の距離「ｃ」が短くなり、液体の流れが弱まる。そこで、図８（ｂ）に示すように、筺体の、第一の傾斜面２３と第二の傾斜面２４との間の領域の重力方向下方の部分を、第一の面から第二の面に向かって重力方向下方に傾斜させる。これにより、ジョイント部材２０と底面２２との間の距離「ｃ」を確保し、液体の流れによって良好な撹拌を行うことができる。 When the housing forming the liquid storage portion is formed by blow molding, the wall thickness becomes thick between the first inclined surface 23 and the second inclined surface 24 and in the vicinity of the second inclined surface 24 as shown in FIG. In some cases. That is, the thickness between the third surface 11 and the bottom surface 22 indicated by “t” in FIG. 8 becomes thicker. As a result, the distance "c" between the joint member 20 and the bottom surface 22 is shortened, and the flow of liquid is weakened. Therefore, as shown in FIG. 8B, the lower portion of the housing in the region between the first inclined surface 23 and the second inclined surface 24 in the direction of gravity is changed from the first surface to the second surface. Tilt downward in the direction of gravity toward. As a result, the distance "c" between the joint member 20 and the bottom surface 22 can be secured, and good stirring can be performed by the flow of the liquid.

また、図２（ｂ）に示すように、液体収納容器は、第一の面１５側から第二の面１６側に向かって重力方向上方に傾斜する第三の傾斜面２５を有することが好ましい。このように傾斜する第三の傾斜面２５があると、底面２２に沈降する色材等は、第二の面１６側から第一の面１５側に移動しやすくなる。そうすることで、供給管４から吹き付けられる液体を、色材等が集まった部分になるべく直接当てることができ、結果として撹拌効果を高めることができる。また、第二の傾斜面２４は、第三の傾斜面２５よりも重力方向下方に位置させることが好ましい。このようにすることで、液体収納部内部のうち第一の面１５側に液体を集め、第一の面１５に開口する供給口１７から液体を良好に使い切ることができる。また、液体の撹拌効率を高めることができる。 Further, as shown in FIG. 2B, the liquid storage container preferably has a third inclined surface 25 that inclines upward in the direction of gravity from the first surface 15 side to the second surface 16 side. .. When there is a third inclined surface 25 that is inclined in this way, the coloring material or the like that settles on the bottom surface 22 can easily move from the second surface 16 side to the first surface 15 side. By doing so, the liquid sprayed from the supply pipe 4 can be directly applied to the portion where the coloring material or the like is gathered, and as a result, the stirring effect can be enhanced. Further, it is preferable that the second inclined surface 24 is located below the third inclined surface 25 in the direction of gravity. By doing so, the liquid can be collected on the first surface 15 side of the inside of the liquid storage portion, and the liquid can be satisfactorily used up from the supply port 17 opening in the first surface 15. In addition, the stirring efficiency of the liquid can be increased.

Claims (17)

記録装置に装着可能な、液体収納部に液体を収納する液体収納容器であって、
前記記録装置に装着される際に前記記録装置側の面となる第一の面と、前記第一の面と反対側の面である第二の面とを有し、
前記第一の面には、液体を供給する供給口が開口しており、
前記液体収納部は、重力方向下方の面となる底面に、前記第一の面側から前記第二の面側に向かって重力方向下方に傾斜する第一の傾斜面と、前記第一の面側から前記第二の面側に向かって重力方向上方に傾斜する第二の傾斜面と、前記第一の面側から第二の面側に向かって重力方向上方に傾斜する第三の傾斜面とを、前記第一の面側からこの順に有し、
前記第二の傾斜面の水平方向に対する傾斜角は、前記第三の傾斜面の水平方向に対する傾斜角と異なることを特徴とする液体収納容器。 A liquid storage container that can be attached to a recording device and stores liquid in a liquid storage unit.
It has a first surface that becomes a surface on the recording device side when mounted on the recording device, and a second surface that is a surface opposite to the first surface.
A supply port for supplying a liquid is opened on the first surface.
The liquid storage portion has a first inclined surface that inclines downward in the gravity direction from the first surface side toward the second surface side, and the first surface on the bottom surface that is the lower surface in the gravity direction. A second inclined surface that inclines upward in the direction of gravity from the side toward the second surface side, and a third inclined surface that inclines upward in the direction of gravity from the first surface side toward the second surface side. And in this order from the first surface side.
A liquid storage container characterized in that the inclination angle of the second inclined surface with respect to the horizontal direction is different from the inclination angle of the third inclined surface with respect to the horizontal direction. 前記供給口から前記液体収納部に供給される液体は、前記第一の傾斜面に沿って流れ、前記第二の傾斜面に到達すると前記第二の傾斜面に沿って重力方向上方に流れる請求項１に記載の液体収納容器。 The liquid supplied from the supply port to the liquid storage unit flows along the first inclined surface, and when it reaches the second inclined surface, it flows upward in the direction of gravity along the second inclined surface. Item 2. The liquid storage container according to item 1. 前記第一の傾斜面は、記録装置が有する供給管が前記第一の面側から前記供給口に挿入された際に、前記供給管の開口と対向する位置にある請求項１または２に記載の液体収納容器。 The first inclined surface is according to claim 1 or 2 at a position facing the opening of the supply tube when the supply tube of the recording device is inserted into the supply port from the first surface side. Liquid storage container. 前記第二の傾斜面は、前記第三の傾斜面よりも重力方向下方に位置する請求項１乃至３のいずれか１項に記載の液体収納容器。 The liquid storage container according to any one of claims 1 to 3 , wherein the second inclined surface is located below the third inclined surface in the direction of gravity. 前記第一の傾斜面と、前記供給口の延在方向に平行な面とがなす角度θ１は、１０°以上である請求項１乃至４のいずれか１項に記載の液体収納容器。 The liquid storage container according to any one of claims 1 to 4 , wherein the angle θ1 formed by the first inclined surface and the surface parallel to the extending direction of the supply port is 10 ° or more. 前記第一の傾斜面と、前記供給口の延在方向に平行な面とがなす角度θ１は、４５°以下である請求項１乃至５のいずれか１項に記載の液体収納容器。 The liquid storage container according to any one of claims 1 to 5 , wherein the angle θ1 formed by the first inclined surface and the surface parallel to the extending direction of the supply port is 45 ° or less. 前記第二の傾斜面と、前記供給口の延在方向に対して垂直な面とがなす角度θ２は、３０°以上である請求項１乃至６のいずれか１項に記載の液体収納容器。 The liquid storage container according to any one of claims 1 to 6 , wherein the angle θ2 formed by the second inclined surface and the surface perpendicular to the extending direction of the supply port is 30 ° or more. 前記第二の傾斜面と、前記供給口の延在方向に対して垂直な面とがなす角度θ２は、６０°以下である請求項１乃至７のいずれか１項に記載の液体収納容器。 The liquid storage container according to any one of claims 1 to 7 , wherein the angle θ2 formed by the second inclined surface and the surface perpendicular to the extending direction of the supply port is 60 ° or less. 前記第一の傾斜面は側壁を備えている請求項１乃至８のいずれか１項に記載の液体収納容器。 The liquid storage container according to any one of claims 1 to 8 , wherein the first inclined surface has a side wall. 前記第一の傾斜面と前記第二の傾斜面との間の領域の重力方向下方の部分は、前記第一の面から前記第二の面に向かって重力方向下方に傾斜している請求項１乃至９のいずれか１項に記載の液体収納容器。 Claim that the portion below the gravity direction of the region between the first inclined surface and the second inclined surface is inclined downward in the gravity direction from the first surface toward the second surface. The liquid storage container according to any one of 1 to 9 . 前記液体は顔料を含有する請求項１乃至１０のいずれか１項に記載の液体収納容器。 The liquid storage container according to any one of claims 1 to 10 , wherein the liquid contains a pigment. 前記供給口から前記液体収納部の内部に延在する弾性部材を有し、前記第一の傾斜面は前記弾性部材の重力方向下方で直下に位置する請求項１乃至１１のいずれか１項に記載の液体収納容器。 According to any one of claims 1 to 11 , the elastic member extends from the supply port to the inside of the liquid storage portion, and the first inclined surface is located directly below the elastic member in the direction of gravity. The liquid storage container described. 前記第二の傾斜面と前記第三の傾斜面とは、前記第二の傾斜面の前記第二の面側の端部と前記第三の傾斜面の前記第一の面側の端部とが接続することで連続的につながっている請求項１乃至１２のいずれか１項に記載の液体収納容器。 The second inclined surface and the third inclined surface are the end portion of the second inclined surface on the second surface side and the end portion of the third inclined surface on the first surface side. The liquid storage container according to any one of claims 1 to 12 , which is continuously connected by connecting the two. 請求項１乃至１３のいずれか１項に記載の液体収納容器が装着され、液体を吐出する液体吐出ヘッドを有することを特徴とする記録装置。 A recording device to which the liquid storage container according to any one of claims 1 to 13 is attached and having a liquid discharge head for discharging a liquid. 前記液体収納容器の供給口には記録装置が有する供給管が挿入されており、前記供給管の開口と前記第一の傾斜面とが対向している請求項１４に記載の記録装置。 The recording device according to claim 14 , wherein a supply pipe included in the recording device is inserted into the supply port of the liquid storage container, and the opening of the supply pipe and the first inclined surface face each other. 前記供給管から前記液体収納部に供給される液体は、前記第一の傾斜面に沿って流れ、前記第二の傾斜面に到達すると前記第二の傾斜面に沿って重力方向上方に流れる請求項１５に記載の記録装置。 The liquid supplied from the supply pipe to the liquid storage unit flows along the first inclined surface, and when it reaches the second inclined surface, it flows upward in the direction of gravity along the second inclined surface. Item 15. Recording device according to item 15 . 前記液体収納部の液体は、記録装置の内部に吸引され、その後で前記液体収納部に戻されることで前記液体収納部に供給される請求項１４乃至１６のいずれか１項に記載の記録装置。 The recording device according to any one of claims 14 to 16 , wherein the liquid in the liquid storage unit is sucked into the recording device and then returned to the liquid storage unit to be supplied to the liquid storage unit. ..
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JP5080747B2 (en) * 2006-03-28 2012-11-21 パナソニック株式会社 Bathtub
JP2009247749A (en) * 2008-04-09 2009-10-29 Toto Ltd Bathtub system

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