JPH05104732A - Deaerator for ink delivery nozzle - Google Patents
Deaerator for ink delivery nozzleInfo
- Publication number
- JPH05104732A JPH05104732A JP27259591A JP27259591A JPH05104732A JP H05104732 A JPH05104732 A JP H05104732A JP 27259591 A JP27259591 A JP 27259591A JP 27259591 A JP27259591 A JP 27259591A JP H05104732 A JPH05104732 A JP H05104732A
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- cap
- fiber bundle
- porous member
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Ink Jet (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明はインクジェット記録ヘッ
ド等のインク吐出ノズルからエアーを排出するための脱
気装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deaerator for discharging air from an ink ejection nozzle of an ink jet recording head or the like.
【0002】[0002]
【従来の技術】図4は従来のこの種の脱気装置の一例を
説明するための断面図ある。2. Description of the Related Art FIG. 4 is a sectional view for explaining an example of a conventional deaerator of this type.
【0003】同図において、10はインクジェット記録
ヘッドのインク吐出ノズル、11はゲート12を介して
このインク吐出ノズル10に連通可能なインクタンクを
それぞれ示している。同図にはさらに、このようなイン
クジェット記録ヘッドのインク吐出ノズル10からエア
ーを排出する脱気装置の構成要素として、ノズル10の
前面に密封被着されたキャップ13と、このキャップ1
3に電磁弁14を介して連結されたメンテナンス液用タ
ンク15と、キャップ13に吸引口が連結された吸引用
真空ポンプ16と、ポンプ16の排出口に連結された廃
液タンク17と、インク吐出ノズル10及びキャップ1
3の当接部の下方に配置されており電磁弁18を介して
ポンプ16の排出口に連結されたガター19とを示して
いる。In the figure, 10 is an ink ejection nozzle of an ink jet recording head, and 11 is an ink tank which can communicate with the ink ejection nozzle 10 through a gate 12. The figure further shows a cap 13 hermetically attached to the front surface of the nozzle 10 as a constituent element of a degassing device for discharging air from the ink discharge nozzle 10 of such an ink jet recording head, and the cap 1
3, a maintenance liquid tank 15 connected to the No. 3 via an electromagnetic valve 14, a suction vacuum pump 16 having a suction port connected to the cap 13, a waste liquid tank 17 connected to the discharge port of the pump 16, and an ink discharge Nozzle 10 and cap 1
3 is a gutter 19 which is disposed below the contact portion of the pump 3 and is connected to the discharge port of the pump 16 via a solenoid valve 18.
【0004】インク吐出ノズル10からエアーを排出す
るには、まず、ゲート12、電磁弁14及び18を共に
閉じた状態でキャップ13をノズル10の前面に密封的
に押し当ててポンプ16を作動させる。これによりキャ
ップ13内の真空度を増大させた後、電磁弁14を開成
させてタンク15からメンテナンス液をキャップ13内
に注入する。その後、電磁弁14を閉成してポンプ16
を再び作動させることによりキャップ13及びノズル1
0内の真空度を増大させる。次いでゲート12及び電磁
弁18を開成し、その直後に、キャップ13をノズル1
0から引き離す。これにより、キャップ13及びノズル
10内の廃液が廃液タンク17へ排出されると共にノズ
ル10内のエアーが吸引排出される。同時に、キャップ
13及びノズル10からこぼれ落ちてガター19内に溜
まっていた廃液が吸引され廃液タンク17へ排出され
る。In order to discharge air from the ink discharge nozzle 10, first, with the gate 12 and the solenoid valves 14 and 18 closed, the cap 13 is hermetically pressed against the front surface of the nozzle 10 to operate the pump 16. .. As a result, the degree of vacuum in the cap 13 is increased, and then the solenoid valve 14 is opened to inject the maintenance liquid into the cap 13 from the tank 15. After that, the solenoid valve 14 is closed and the pump 16 is closed.
The cap 13 and the nozzle 1 by reactivating the
Increase the degree of vacuum in zero. Next, the gate 12 and the solenoid valve 18 are opened, and immediately after that, the cap 13 is attached to the nozzle 1.
Separate from 0. As a result, the waste liquid in the cap 13 and the nozzle 10 is discharged to the waste liquid tank 17, and the air in the nozzle 10 is sucked and discharged. At the same time, the waste liquid spilled from the cap 13 and the nozzle 10 and accumulated in the gutter 19 is sucked and discharged to the waste liquid tank 17.
【0005】[0005]
【発明が解決しようとする課題】上述したごとき従来技
術では、ガター内に溜まっている少量の廃液を廃液タン
クへ搬送するにも真空ポンプと電磁弁とを使用する必要
があり、部品点数が多くなって構成が複雑となるばかり
か、電磁弁のような高価な部品を用いるためにコストが
上昇してしまう。しかも、高価な部品を用いる割りには
動作不良が多く発生し、信頼性がかなり低かった。In the prior art as described above, it is necessary to use the vacuum pump and the solenoid valve to convey the small amount of waste liquid accumulated in the gutter to the waste liquid tank, and the number of parts is large. Not only does the structure become complicated, but the cost increases due to the use of expensive parts such as solenoid valves. In addition, there are many malfunctions in spite of using expensive parts, and the reliability is considerably low.
【0006】従って本発明は、構成が簡単でありかつ大
幅なコストダウンを図ることのできるインク吐出ノズル
の脱気装置を提供するものである。Therefore, the present invention provides a degassing device for an ink discharge nozzle, which has a simple structure and can significantly reduce the cost.
【0007】[0007]
【課題を解決するための手段】本発明によれば、インク
吐出ノズルからエアーを吸引するためにこのインク吐出
ノズルに密封被着可能なキャップ部材と、キャップ部材
に連結されておりこのキャップ部材から吸引を行う真空
ポンプと、キャップ部材の下方に設けられておりこのキ
ャップ部材及び上述のインク吐出ノズルから滴下された
廃液を受け取る廃液溜め部と、内部に多孔質部材が充填
された廃液タンクと、一端が廃液タンクに連通すると共
に他端が廃液溜め部に連通しており毛細管現象効果を有
する繊維束部材を内部に具備した導管とを備えており、
この導管の繊維束部材の廃液タンク側の端が上述の多孔
質部材に接触した斜め切断面を有しているインク吐出ノ
ズルの脱気装置が提供される。According to the present invention, a cap member which can be hermetically attached to an ink discharge nozzle for sucking air from the ink discharge nozzle, and a cap member connected to the cap member. A vacuum pump for suctioning, a waste liquid reservoir provided below the cap member for receiving the waste liquid dropped from the cap member and the above-described ink discharge nozzle, and a waste liquid tank filled with a porous member inside, One end communicates with the waste liquid tank and the other end communicates with the waste liquid reservoir, and a conduit having a fiber bundle member having a capillary effect is provided therein.
There is provided a degassing device for an ink discharge nozzle in which an end of a fiber bundle member of the conduit on the waste liquid tank side has an oblique cutting surface in contact with the porous member.
【0008】[0008]
【作用】キャップ部材及びインク吐出ノズルから滴下さ
れた廃液を受け取る廃液溜め部内に溜められた廃液は、
繊維束部材の毛細管現象によって導管内を廃液タンク側
の端へ自動的に運ばれ、その端に形成されている繊維束
部材の斜め切断面から廃液タンクの多孔質部材内に吸収
されて蓄積される。The operation of the waste liquid stored in the waste liquid storage portion that receives the waste liquid dropped from the cap member and the ink discharge nozzle
Due to the capillary action of the fiber bundle member, it is automatically carried inside the conduit to the end on the waste liquid tank side, and is absorbed and accumulated in the porous member of the waste liquid tank from the diagonal cut surface of the fiber bundle member formed at that end. It
【0009】[0009]
【実施例】以下本発明を実施例により詳細に説明する。EXAMPLES The present invention will be described in detail below with reference to examples.
【0010】図1は本発明の一実施例である脱気装置を
インクジェット記録ヘッドのインク吐出ノズルに装着し
た状態を表す断面図、図2はこの脱気装置をインク吐出
ノズルから引き離した状態を表す断面図である。FIG. 1 is a sectional view showing a state in which a deaeration device according to an embodiment of the present invention is attached to an ink ejection nozzle of an ink jet recording head, and FIG. 2 shows a state in which the deaeration device is separated from the ink ejection nozzle. FIG.
【0011】図1において、20はインクジェット記録
ヘッドのインク吐出ノズル、21はこのノズル20から
エアーを排出するべくノズル20の前面に密封被着され
たキャップ(本発明のキャップ部材に対応している)を
示している。このキャップ21には、吸引用真空ポンプ
22の吸引口が連結されており、この真空ポンプ22の
排出口は廃液タンク23に連結されている。この廃液タ
ンク23内には、例えばポリエステル又は他の材質のス
ポンジもしくはフェルトのように液体を含浸しやすい部
材からなる多孔質部材24が充填されている。In FIG. 1, 20 is an ink discharge nozzle of an ink jet recording head, 21 is a cap which is hermetically attached to the front surface of the nozzle 20 to discharge air from the nozzle 20 (corresponding to the cap member of the present invention. ) Is shown. A suction port of a suction vacuum pump 22 is connected to the cap 21, and a discharge port of the vacuum pump 22 is connected to a waste liquid tank 23. The waste liquid tank 23 is filled with a porous member 24 made of a material such as polyester or other material such as sponge or felt that is easily impregnated with liquid.
【0012】インク吐出ノズル20の前面及びキャップ
21の下方には、ガター、即ち廃液溜め部25が設けら
れている。この廃液溜め部25は、本実施例ではキャッ
プ21と一体化されているがこれは本発明の必須要件で
はなく互いに独立していてもよい。廃液溜め部25内に
は、本発明の必須要件ではないが、本実施例では多孔質
部材24と同様の液体を含浸しやすい多孔質部材26が
充填されている。A gutter, that is, a waste liquid reservoir 25 is provided on the front surface of the ink discharge nozzle 20 and below the cap 21. The waste liquid reservoir 25 is integrated with the cap 21 in this embodiment, but this is not an essential requirement of the present invention and may be independent of each other. Although not essential in the present invention, the waste liquid reservoir 25 is filled with a porous member 26 similar to the porous member 24 that is easily impregnated with liquid in the present embodiment.
【0013】廃液溜め部25とこれより上方に位置する
廃液タンク23とは導管27によって連結されている。
導管27内には、毛細管現象効果を有する例えばポリエ
ステル等の樹脂製の繊維束部材27aが充填されてい
る。本実施例では、樹脂の繊維束部材27aを内部に詰
めた可撓性のチューブが用いられているが、チューブを
用いることなく繊維束の外周面を溶かして外面をシール
したものを用いてもよい。The waste liquid reservoir 25 and the waste liquid tank 23 located above it are connected by a conduit 27.
The conduit 27 is filled with a fiber bundle member 27a made of a resin such as polyester having a capillary effect. In this embodiment, a flexible tube in which a resin fiber bundle member 27a is packed is used, but it is also possible to use the one in which the outer peripheral surface of the fiber bundle is melted and the outer surface is sealed without using the tube. Good.
【0014】繊維束部材27aの廃液溜め部25側の端
面は多孔質部材26の底面に接触している。廃液溜め部
25内に多孔質部材26が充填されていない場合は、内
部の液体に直接接触するように構成される。図3は、繊
維束部材27aの廃液タンク23側の端面の様子を詳細
に示す断面図である。同図に示すように、繊維束部材2
7aの廃液タンク23側の端面は、斜め切断面となって
いて多孔質部材24の上面に押し当てられ接触してい
る。斜め切断面とすることにより、端面の接触面積が大
きくなり、その分繊維束部材27aから多孔質部材24
への吸収率が大きくなる。The end surface of the fiber bundle member 27a on the waste liquid reservoir 25 side is in contact with the bottom surface of the porous member 26. When the waste liquid reservoir 25 is not filled with the porous member 26, the waste liquid reservoir 25 is configured to come into direct contact with the liquid inside. FIG. 3 is a cross-sectional view showing in detail the state of the end surface of the fiber bundle member 27a on the waste liquid tank 23 side. As shown in the figure, the fiber bundle member 2
The end surface of the 7a on the waste liquid tank 23 side is an obliquely cut surface and is pressed against and contacts the upper surface of the porous member 24. By making the slanted cut surface, the contact area of the end surface becomes large, and the fiber bundle member 27a to the porous member 24 are correspondingly increased.
Absorption rate is increased.
【0015】廃液溜め部25と廃液タンク23との間の
廃液の搬送高さhと搬送量とに応じて、繊維束部材27
aの密度及び断面積が適切に選択される。The fiber bundle member 27 is arranged in accordance with the transport height h and the transport amount of the waste liquid between the waste liquid reservoir 25 and the waste liquid tank 23.
The density and cross-sectional area of a are selected appropriately.
【0016】インク吐出ノズル20からエアーを排出す
るには、まず、図1に示すように、キャップ21をノズ
ル20の前面に密封的に押し当ててポンプ22を作動さ
せる。これによりキャップ21内の真空度を増大させて
ノズル20内のインク廃液が廃液タンク22へ排出され
ると共にノズル20内のエアーが吸引排出される。この
吸引を必要時間だけ行った後、図2に示すように、キャ
ップ21をノズル20から引き離す。これにより、キャ
ップ21内及びノズル20の前面からインク廃液が廃液
溜め部25内に落ち込み、多孔質部材26に含浸され
る。廃液溜め部25内の多孔質部材26に含浸されたイ
ンク廃液は、繊維束部材27aの毛細管現象によって導
管27内を廃液タンク23側の端へ自動的に運ばれる。
そして、インク廃液は、その端に形成されている繊維束
部材27aの斜め切断面から廃液タンク23の多孔質部
材24内に吸収されここに蓄積される。In order to discharge air from the ink discharge nozzle 20, first, as shown in FIG. 1, the cap 21 is hermetically pressed against the front surface of the nozzle 20 to operate the pump 22. As a result, the degree of vacuum in the cap 21 is increased, the ink waste liquid in the nozzle 20 is discharged to the waste liquid tank 22, and the air in the nozzle 20 is sucked and discharged. After performing this suction for a required time, as shown in FIG. 2, the cap 21 is separated from the nozzle 20. As a result, the ink waste liquid falls from the inside of the cap 21 and the front surface of the nozzle 20 into the waste liquid reservoir 25 and is impregnated into the porous member 26. The ink waste liquid impregnated in the porous member 26 in the waste liquid reservoir 25 is automatically carried in the conduit 27 to the end on the waste liquid tank 23 side by the capillary phenomenon of the fiber bundle member 27a.
Then, the ink waste liquid is absorbed and accumulated in the porous member 24 of the waste liquid tank 23 from the oblique cut surface of the fiber bundle member 27a formed at the end thereof.
【0017】このように本実施例では、真空ポンプ等の
動力を用いることなくまた電磁弁等の高価な部品を用い
ることなく、簡単な構造で廃液溜め部25内のインク廃
液を自動的に廃液タンク23へ搬送することができる。
従って、脱気装置の構造を簡易化でき大幅なコストダウ
ンを図ることができる。As described above, in this embodiment, the ink waste liquid in the waste liquid reservoir 25 is automatically drained with a simple structure without using power such as a vacuum pump and without using expensive parts such as a solenoid valve. It can be transported to the tank 23.
Therefore, the structure of the deaerator can be simplified and the cost can be significantly reduced.
【0018】[0018]
【発明の効果】以上詳細に説明したように本発明によれ
ば、インク吐出ノズルからエアーを吸引するためにこの
インク吐出ノズルに密封被着可能なキャップ部材と、キ
ャップ部材に連結されておりこのキャップ部材から吸引
を行う真空ポンプと、キャップ部材の下方に設けられて
おりこのキャップ部材及び上述のインク吐出ノズルから
滴下された廃液を受け取る廃液溜め部と、内部に多孔質
部材が充填された廃液タンクと、一端が廃液タンクに連
通すると共に他端が廃液溜め部に連通しており毛細管現
象効果を有する繊維束部材を内部に具備した導管とを備
えており、この導管の繊維束部材の廃液タンク側の端が
上述の多孔質部材に接触した斜め切断面を有しているた
め、構成が簡単でありかつ大幅なコストダウンを図るこ
とのできるインク吐出ノズルの脱気装置を得ることがで
きる。As described in detail above, according to the present invention, a cap member which can be hermetically attached to the ink discharge nozzle for sucking air from the ink discharge nozzle, and the cap member is connected to the cap member. A vacuum pump for sucking from the cap member, a waste liquid reservoir provided below the cap member for receiving the waste liquid dropped from the cap member and the above-mentioned ink discharge nozzle, and a waste liquid filled with a porous member inside. A tank and a conduit having one end communicating with the waste liquid tank and the other end communicating with the waste liquid reservoir and having therein a fiber bundle member having a capillary effect, the waste liquid of the fiber bundle member of the conduit. Ink with a simple structure and a large cost reduction because the end on the tank side has an oblique cutting surface in contact with the above-mentioned porous member It is possible to obtain the degassing unit of output nozzle.
【図1】本発明の一実施例である脱気装置をインクジェ
ット記録ヘッドのインク吐出ノズルに装着した状態を表
す断面図である。FIG. 1 is a cross-sectional view showing a state in which a deaerator according to an embodiment of the present invention is attached to an ink ejection nozzle of an inkjet recording head.
【図2】図1の脱気装置をインク吐出ノズルから引き離
した状態を表す断面図である。FIG. 2 is a cross-sectional view showing a state in which the deaerator of FIG. 1 is separated from an ink ejection nozzle.
【図3】図1の脱気装置における繊維束部材と廃液タン
クの多孔質部材との接触部分を拡大して示す断面図であ
る。3 is an enlarged sectional view showing a contact portion between a fiber bundle member and a porous member of a waste liquid tank in the deaerator of FIG.
【図4】従来の脱気装置をインク吐出ノズルに装着した
状態を表す断面図である。FIG. 4 is a cross-sectional view showing a state in which a conventional deaerator is attached to an ink ejection nozzle.
20 インク吐出ノズル 21 キャップ 22 吸引用真空ポンプ 23 廃液タンク 24、26 多孔質部材 25 廃液溜め部 27 導管 27a 繊維束部材 20 Ink Ejection Nozzle 21 Cap 22 Vacuum Pump for Suction 23 Waste Liquid Tank 24, 26 Porous Member 25 Waste Liquid Reservoir 27 Conduit 27a Fiber Bundle Member
Claims (1)
ために該インク吐出ノズルに密封被着可能なキャップ部
材と、該キャップ部材に連結されており該キャップ部材
から吸引を行う真空ポンプと、該キャップ部材の下方に
設けられており該キャップ部材及び前記インク吐出ノズ
ルから滴下された廃液を受け取る廃液溜め部と、内部に
多孔質部材が充填された廃液タンクと、一端が該廃液タ
ンクに連通すると共に他端が前記廃液溜め部に連通して
おり毛細管現象効果を有する繊維束部材を内部に具備し
た導管とを備えており、該導管の前記繊維束部材の前記
廃液タンク側の端が前記多孔質部材に接触した斜め切断
面を有していることを特徴とするインク吐出ノズルの脱
気装置。1. A cap member which can be hermetically attached to the ink discharge nozzle for sucking air from the ink discharge nozzle, a vacuum pump which is connected to the cap member and sucks air from the cap member, and the cap. A waste liquid reservoir provided below the member for receiving the waste liquid dripped from the cap member and the ink discharge nozzle, a waste liquid tank having a porous member filled therein, and one end communicating with the waste liquid tank. The other end communicates with the waste liquid reservoir, and a conduit having a fiber bundle member having a capillary effect is provided therein, and the end of the conduit on the waste liquid tank side of the fiber bundle member is the porous member. A degassing device for an ink discharge nozzle, which has an oblique cutting surface in contact with a member.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27259591A JP2667602B2 (en) | 1991-10-21 | 1991-10-21 | Degassing device for ink discharge nozzle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP27259591A JP2667602B2 (en) | 1991-10-21 | 1991-10-21 | Degassing device for ink discharge nozzle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05104732A true JPH05104732A (en) | 1993-04-27 |
JP2667602B2 JP2667602B2 (en) | 1997-10-27 |
Family
ID=17516111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP27259591A Expired - Fee Related JP2667602B2 (en) | 1991-10-21 | 1991-10-21 | Degassing device for ink discharge nozzle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2667602B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0781083A (en) * | 1993-07-20 | 1995-03-28 | Canon Inc | Ink cartridge, ink jet recorcing device having the cartridge, and recording apparatus having the ink jet recording device |
US6511153B1 (en) * | 1999-09-03 | 2003-01-28 | Canon Kabushiki Kaisha | Preliminary discharge acceptor mechanism and printing apparatus provided with the preliminary discharge acceptor mechanism |
JP2004209980A (en) * | 2002-12-27 | 2004-07-29 | Hewlett-Packard Development Co Lp | Inkjet printing system, method for printing on printing medium, and system for absorbing waste ink from the inkjet printing system |
JP2012035503A (en) * | 2010-08-06 | 2012-02-23 | Ricoh Co Ltd | Image forming apparatus |
JP2012179814A (en) * | 2011-03-02 | 2012-09-20 | Ricoh Co Ltd | Image forming apparatus |
JP2013144411A (en) * | 2012-01-16 | 2013-07-25 | Ricoh Co Ltd | Image forming apparatus |
-
1991
- 1991-10-21 JP JP27259591A patent/JP2667602B2/en not_active Expired - Fee Related
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0781083A (en) * | 1993-07-20 | 1995-03-28 | Canon Inc | Ink cartridge, ink jet recorcing device having the cartridge, and recording apparatus having the ink jet recording device |
US6511153B1 (en) * | 1999-09-03 | 2003-01-28 | Canon Kabushiki Kaisha | Preliminary discharge acceptor mechanism and printing apparatus provided with the preliminary discharge acceptor mechanism |
JP2004209980A (en) * | 2002-12-27 | 2004-07-29 | Hewlett-Packard Development Co Lp | Inkjet printing system, method for printing on printing medium, and system for absorbing waste ink from the inkjet printing system |
JP2012035503A (en) * | 2010-08-06 | 2012-02-23 | Ricoh Co Ltd | Image forming apparatus |
JP2012179814A (en) * | 2011-03-02 | 2012-09-20 | Ricoh Co Ltd | Image forming apparatus |
JP2013144411A (en) * | 2012-01-16 | 2013-07-25 | Ricoh Co Ltd | Image forming apparatus |
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JP2667602B2 (en) | 1997-10-27 |
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