JP2737174B2 - Capping device for inkjet printer - Google Patents
Capping device for inkjet printerInfo
- Publication number
- JP2737174B2 JP2737174B2 JP27790988A JP27790988A JP2737174B2 JP 2737174 B2 JP2737174 B2 JP 2737174B2 JP 27790988 A JP27790988 A JP 27790988A JP 27790988 A JP27790988 A JP 27790988A JP 2737174 B2 JP2737174 B2 JP 2737174B2
- Authority
- JP
- Japan
- Prior art keywords
- cap
- cap member
- capping device
- print head
- ink jet
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 description 4
- 238000011109 contamination Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/165—Prevention or detection of nozzle clogging, e.g. cleaning, capping or moistening for nozzles
- B41J2/16517—Cleaning of print head nozzles
- B41J2/1652—Cleaning of print head nozzles by driving a fluid through the nozzles to the outside thereof, e.g. by applying pressure to the inside or vacuum at the outside of the print head
- B41J2/16523—Waste ink transport from caps or spittoons, e.g. by suction
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Ink Jet (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明はノズルよりインク滴を噴射して記録媒体に文
字等の記録を行うインクジェット記録装置の中で、特に
その記録ヘッドにおけるインクの乾燥を防止するととも
に、インクの漏れによる周辺部の汚れを防ぐようなイン
クジェット記録ヘッドのキャッピング装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an ink jet recording apparatus for recording characters and the like on a recording medium by ejecting ink droplets from nozzles. The present invention relates to a capping device for an ink jet recording head that prevents contamination of a peripheral portion due to leakage of ink.
［従来の技術］ 従来、インクジェット記録装置のキャッピング装置に
関しては、キャップをある一方向のみに回転可能に構成
しキャッピングする方法があった。[Prior Art] Conventionally, as for a capping device of an ink jet recording device, there has been a method in which a cap is configured to be rotatable in only one direction and capping is performed.
第４図にその概略図を示す。キャップ２は支点2aでキ
ャップ支持部材３に回転可能に支持されており、キャッ
プ支持部材３は、支点3aを中心に回転可能でカム機構５
によりキャップの開閉運動を行い、キャップしている状
態では引張りコイルばね４によりキャップ２を常に印字
ヘッド１へ押圧している。例えば、印字ヘッド１が矢印
Ａのようにキャップ２に対して前後した場合でもキャッ
プ支持部材３は支点3aを中心に矢印Ｂのように回転し、
それとともにキャップ２は支点2aを中心に矢印Ｃのよう
に回転し常に同じ姿勢でキャッピングできるように構成
されていた。FIG. 4 shows a schematic diagram thereof. The cap 2 is rotatably supported by a cap support member 3 at a fulcrum 2a, and the cap support member 3 is rotatable about the fulcrum 3a and a cam mechanism 5 is provided.
The cap 2 is constantly pressed against the print head 1 by the tension coil spring 4 when the cap is closed. For example, even when the print head 1 moves back and forth with respect to the cap 2 as shown by an arrow A, the cap support member 3 rotates around the fulcrum 3a as shown by an arrow B,
At the same time, the cap 2 is configured to rotate around the fulcrum 2a as shown by the arrow C so that capping can always be performed in the same posture.
［発明が解決しようとする課題及び目的］ しかし、従来のキャッピング装置では、キャッピング
がある一方向のみしか回転できないため、その方向と直
交する方向に関しては、弾性体であるキャップの弾性を
利用してキャップと印字ヘッドと平行度のずれを補って
おり、キャップの印字ヘッドとの当接面の面圧分布に偏
りが生じていた。ただし、キャップの回転方向と直交す
る幅方向に関してはキャップの幅が狭かったため、前記
の方法でも所定の目的は達せられていたが、印字ヘッド
のノズルを複数列にするため等でキャップを大型化する
必要が生じると、キャップの姿勢のばらつきによるキャ
ッピング不良が生じて、ノズル付近のインクの乾燥によ
るインクの吐出不良や、キャップからのインクの漏れに
よる電子機器内の汚染を引き起こすという問題点を有し
ていた。また、キャップを行う際キャップの姿勢がばら
つくとその都度安定したキャップを行うことはむずかし
いという問題点も有していた。[Problems and Object to be Solved by the Invention] However, in the conventional capping device, since capping can be rotated only in one direction, the elasticity of the cap, which is an elastic body, is used in the direction orthogonal to that direction. The gap in the parallelism between the cap and the print head was compensated for, and the surface pressure distribution on the contact surface of the cap with the print head was biased. However, in the width direction perpendicular to the rotation direction of the cap, the width of the cap was narrow, and thus the above-mentioned method also achieved the predetermined purpose.However, the cap was enlarged by, for example, providing a plurality of rows of nozzles of the print head. If the need arises, capping failures due to variations in the posture of the cap may occur, causing ink ejection failure due to drying of the ink near the nozzles, and causing contamination of the electronic device due to ink leakage from the cap. Was. In addition, there is also a problem that it is difficult to perform a stable cap every time when the posture of the cap varies when performing the cap.
そこで、本発明はこのような問題点を解決するもの
で、その目的とするところは、印字ヘッドへのキャップ
の密着不良を防止してインクの乾燥、インクの漏れ等の
無い極めて信頼性の高いインクジェットプリンタのキャ
ッピング装置を提供することにある。Therefore, the present invention solves such a problem, and the object thereof is to prevent poor adhesion of the cap to the print head, to dry the ink, to prevent the ink from leaking, etc. An object of the present invention is to provide a capping device for an ink jet printer.
［課題を解決するための手段］ すなわち、本発明はかかる課題を解決するために、非
印字時に印字ヘッドのノズル部分を封止するキャッピン
グ装置を、ノズル部分を封止するキャップ部材と、この
キャップ部材を、その面に対して平行でかつ互いに直交
する２つの軸回りに回動可能に支持する支持部材とによ
り構成して、印字ヘッドとこの面を封止するキャップ部
材との間の位置関係に例えばら付きがあっても、互いに
平行に密着させることができるようにしたものである。Means for Solving the Problems In order to solve the problems, the present invention provides a capping device for sealing a nozzle portion of a print head during non-printing, a cap member for sealing the nozzle portion, and a cap for sealing the nozzle portion. A positional relationship between the print head and a cap member that seals this surface, the member being constituted by a supporting member that rotatably supports the member about two axes parallel to and orthogonal to the surface. For example, even if there is some variation, they can be brought into close contact with each other in parallel.
［作用］ 本発明の上記構成によれば、キャップの当接面と印字
ヘッド当接面との平行度が正確に得られていなくとも、
キャップを印字ヘッドに押し付けて行くと、キャップの
当接面は半球状の凸部と凹部との作用により首振り運動
をして正確に印字ヘッドに密着する。また、キャップの
印字ヘッドへの押圧力は、半球状の凸部と凹部との接点
のみによってキャップに与えられるため、キャップ当接
面の面圧分布はほぼ一定になり、インクの乾燥やインク
の漏れ等の無い安定したキャッピングが可能となる。[Operation] According to the above configuration of the present invention, even if the parallelism between the contact surface of the cap and the print head contact surface is not accurately obtained,
As the cap is pressed against the print head, the contact surface of the cap swings due to the action of the hemispherical projections and recesses, and accurately contacts the print head. In addition, since the pressing force of the cap to the print head is given to the cap only by the contact between the hemispherical convex portion and the concave portion, the surface pressure distribution on the cap contact surface becomes substantially constant, and the ink is dried or the ink is dried. Capable of stable capping without leakage.
さらに、キャップの姿勢を一定に保つ構造にすること
により、常に同じ状態でキャップを印字ヘッドに押し付
けることができるため安定したキャップ動作が可能とな
る。Further, by adopting a structure in which the posture of the cap is kept constant, the cap can always be pressed against the print head in the same state, so that a stable cap operation can be performed.
［実施例］ 本発明のインクジェットプリンタのキャッピング装置
を図面に基づき説明する。[Embodiment] A capping device for an inkjet printer according to the present invention will be described with reference to the drawings.
第１図は、本発明の一実施例であり、５はゴム材料な
どの弾性体よりなるキャップを固定するキャップ固定枠
であり、その中央付近に半球状の凹部5aを設け、キャッ
プ固定枠５の両側面には、キャップ固定枠５をキャップ
２とともに首振り可能に係止するための円筒状の突起5b
を設ける。３は、キャップ２及びキャップ固定枠５を係
止するキャップ支持部材であり、半球状の凸部3cとその
両側に円筒状の突起5bを首振り可能に係止するためのト
ラック穴3bを設けて、第１図中に示すように係合され
る。６は、キャップ２を通してインクを吸引する図示し
ないポンプ装置へ通ずるチューブである。７は、キャッ
プ２内を大気と連通、遮断するための図示しないバルブ
へ通ずるチューブである。FIG. 1 shows an embodiment of the present invention. Reference numeral 5 denotes a cap fixing frame for fixing a cap made of an elastic material such as a rubber material, and a hemispherical concave portion 5a is provided near the center of the cap fixing frame. Cylindrical projections 5b for locking the cap fixing frame 5 together with the cap 2 so as to be able to swing.
Is provided. Reference numeral 3 denotes a cap support member for locking the cap 2 and the cap fixing frame 5, and has a hemispherical projection 3c and track holes 3b on both sides thereof for locking the cylindrical projections 5b so as to swing. Thus, they are engaged as shown in FIG. Reference numeral 6 denotes a tube that leads to a pump device (not shown) that sucks ink through the cap 2. Reference numeral 7 denotes a tube that communicates with the atmosphere inside the cap 2 and communicates with a valve (not shown).
第２図は、第１図に示したキャッピング装置の側面図
及び断面図である。第２図（イ）に示すように印字ヘッ
ド１が矢印Ａのようにキャップ２に対して前後した場合
でもキャップ支持部材３は支点3aを中心に矢印Ｂのよう
に回転しそれとともにキャップ２は、キャップ固定枠５
の突起5bを中心に矢印Ｃのように回転し常に同じ姿勢で
キャッピング可能なように構成されることは従来例と同
じである。さらに、本発明においては、第２図（ロ）に
示すようにヘッド１がキャップ支持部材３に対してθ１
だけ回転しているような場合においてもキャップ２を固
定しているキャップ固定枠５は、キャップ支持部材の半
球状の突起3cとキャップ固定枠の半球状の凹部5aで接し
ながら、またキャップ固定枠の円筒状の突起5bはキャッ
プ支持部材のトラック穴3bの中を動きながら、 θ１＝θ２ となる角度θ２だけ回転し図に示すようにキャッピング
される。このときキャップ２をヘッド１に押し付ける力
は半球状の凸部3cの１点と半球状の凹部5aの１点による
点接触状態にて伝わる。従って、キャップ２の面圧分布
が均一になるためには、キャップ固定枠５の半球状の凹
部5aを、キャップ２のヘッド１への当接面の中心に配置
すれば良い。FIG. 2 is a side view and a cross-sectional view of the capping device shown in FIG. As shown in FIG. 2A, even when the print head 1 moves back and forth with respect to the cap 2 as indicated by the arrow A, the cap support member 3 rotates about the fulcrum 3a as indicated by the arrow B, and the cap 2 is simultaneously moved. , Cap fixing frame 5
It is the same as the conventional example that it is configured to rotate about the projection 5b as a center as shown by the arrow C and always be able to cap in the same posture. Further, in the present invention, as shown in FIG.
The cap fixing frame 5 fixing the cap 2 even when the cap fixing frame is rotated only while the cap fixing frame 5 is in contact with the hemispherical projection 3c of the cap support member and the hemispherical concave portion 5a of the cap fixing frame. While moving in the track hole 3b of the cap support member, the cylindrical projection 5b rotates by an angle θ2 such that θ1 = θ2 and is capped as shown in the figure. At this time, the force pressing the cap 2 against the head 1 is transmitted in a point contact state by one point of the hemispherical convex portion 3c and one point of the hemispherical concave portion 5a. Therefore, in order to make the surface pressure distribution of the cap 2 uniform, the hemispherical concave portion 5a of the cap fixing frame 5 may be arranged at the center of the contact surface of the cap 2 with the head 1.
さらに、この実施例においては、キャップ支持部材３
に半球状の凸部を設けた例に付いて述べたが、キャップ
支持部材３に半球状の凹部を設け、キャップ固定枠５に
半球状の凸部を設けた場合にも同様の作用が得られるこ
とは言うまでもない。Further, in this embodiment, the cap support member 3
However, the same effect can be obtained when a hemispherical concave portion is provided in the cap support member 3 and a hemispherical convex portion is provided in the cap fixing frame 5. Needless to say,
第３図は、本発明の第２の実施例を示すもので、キャ
ップ固定枠５の一部にフック5dを設け、そこにキャップ
の姿勢を一定に保つキャップ姿勢制御ばね８を掛けキャ
ップ２の下部を常に印字ヘッド１と反対側へ引くように
構成されている。印字ヘッド１にキャップ２が接してい
ない状態では、キャップ姿勢制御ばね８の働きでキャッ
プ２はわずかに下を向いた状態となっており、このよう
な状態で図示しないキャップ開閉機構と引っ張りコイル
ばね４の働きにより、キャップする動作を行うと、キャ
ップ支持部材３は矢印Ｂのように回転し常にキャップ２
のシール面の上端2aから印字ヘッド１に接触してキャッ
プされる。このときキャップ姿勢制御ばねの力が強すぎ
るとシール面の面圧分布を不均一にして、キャッピング
不良の原因となるためキャップ２の姿勢を制御できる最
小の値が望ましい。FIG. 3 shows a second embodiment of the present invention, in which a hook 5d is provided on a part of a cap fixing frame 5, and a cap attitude control spring 8 for keeping the attitude of the cap constant is hung thereon. The lower portion is always pulled to the opposite side of the print head 1. When the cap 2 is not in contact with the print head 1, the cap 2 is slightly turned down by the action of the cap attitude control spring 8, and in this state, a cap opening / closing mechanism (not shown) and a tension coil spring When the capping operation is performed by the operation of the cap 4, the cap support member 3 rotates as shown by the arrow B and the cap 2
The cap 2 comes in contact with the print head 1 from the upper end 2a of the seal surface. At this time, if the force of the cap attitude control spring is too strong, the surface pressure distribution on the sealing surface becomes non-uniform, which causes poor capping. Therefore, the minimum value that can control the attitude of the cap 2 is desirable.
［発明の効果］ 以上述べたように本発明によれば、印字ヘッドとそれ
を被覆するキャップ部材の位置関係が比較的ばらついた
としても、キャップのシール面が印字ヘッドに対し平行
に密着できる機構を付与することにより、シール面の面
圧分布の偏りを最小限に抑えるという大きな効果を有す
る。さらに、キャップ姿勢制御ばねを設けキャップの姿
勢を一定に保つように構成することによって常に安定し
たキャッピングを可能にするという大きな効果を有す
る。[Effects of the Invention] As described above, according to the present invention, even if the positional relationship between the print head and the cap member covering the print head is relatively varied, the mechanism by which the sealing surface of the cap can be in close contact with the print head in parallel. Has a great effect of minimizing the deviation of the surface pressure distribution on the sealing surface. Furthermore, by providing a cap attitude control spring to keep the attitude of the cap constant, there is a great effect that stable capping is always enabled.
第１図は本発明のインクジェットプリンタのキャッピン
グ装置の一実施例を示す斜視図。 第２図は第１図の側面図及びＤ−Ｄ断面図。 第３図は本発明の第２の実施例を示す側面図。 第４図は、従来のインクジェットプリンタのキャッピン
グ装置を示す側面図。 １……印字ヘッド ２……キャップ ３……キャップ支持部材 3c……半球状の凸部 5a……半球状の凹部 ８……キャップ姿勢制御ばねFIG. 1 is a perspective view showing one embodiment of a capping device of an ink jet printer according to the present invention. FIG. 2 is a side view and DD sectional view of FIG. FIG. 3 is a side view showing a second embodiment of the present invention. FIG. 4 is a side view showing a capping device of a conventional ink jet printer. DESCRIPTION OF SYMBOLS 1 ... Print head 2 ... Cap 3 ... Cap support member 3c ... Hemispheric convex part 5a ... Hemispheric concave part 8 ... Cap attitude control spring
Claims (3)
するキャッピング装置を備えたインクジェットプリンタ
において、 上記キャッピング装置は、上記ノズル部分を封止するキ
ャップ部材と、該キャップ部材の面に対して平行でかつ
互いに直交する２つの軸回りに回動可能に上記キャップ
部材を支持する支持部材と、により構成したことを特徴
とするインクジェットプリンタのキャッピング装置。1. An ink jet printer comprising a capping device for sealing a nozzle portion of a print head during non-printing, wherein the capping device comprises: a cap member for sealing the nozzle portion; A capping device for an ink jet printer, comprising: a support member that supports the cap member so as to be rotatable about two axes that are parallel and mutually orthogonal.
背面略中央に点状の当接部を設ける一方、上記キャップ
部材を支持する上記支持部材には、上記キャップ部材の
枢着部と係合して上記キャップ部材をその面と直交する
向きに変位可能にかつ該枢着部回りに回動可能に支持す
る支承部を両側に、上記キャップ部材背面の点状当接部
に当接して上記キャップ部材を首振り可能に支持する点
状の当接部を上記２つの支承部間に設けたことを特徴と
する請求項１記載のインクジェットプリンタのキャッピ
ング装置。2. The cap member according to claim 1, wherein the cap member has pivotal portions on both sides thereof.
A point-like contact portion is provided substantially at the center of the back surface, and the support member that supports the cap member is displaced in a direction orthogonal to the plane by engaging with a pivotal portion of the cap member. Point-like abutment for supporting the cap member so that it can swing around the pivotable portion on both sides and a point-like abutment portion on the back surface of the cap member so as to support the cap member in a swingable manner. 2. A capping device for an ink jet printer according to claim 1, wherein a portion is provided between said two bearing portions.
ップ部材をその面と直交する向きに付勢する付勢部材を
結合する一方、上記キャップ部材を支持する支持部材に
はその両側に、上記キャップ部材の枢着部と係合して上
記キャップ部材をその面と直交する向きに変位可能にか
つ上記枢着部回りに回動可能に支持する支承部を設けた
ことを特徴とする請求項１記載のインクジェットプリン
タのキャッピング装置。3. A biasing member for biasing the cap member in a direction perpendicular to the surface thereof is connected to a center of one end of the cap member, and a supporting member for supporting the cap member is provided on both sides thereof. A support portion is provided, which is engaged with a pivot portion of the cap member to support the cap member so as to be displaceable in a direction perpendicular to the surface thereof and to be rotatable around the pivot portion. Item 2. A capping device for an ink jet printer according to Item 1.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27790988A JP2737174B2 (en) | 1988-11-02 | 1988-11-02 | Capping device for inkjet printer |
| DE68919775T DE68919775T2 (en) | 1988-09-07 | 1989-09-06 | Sealing for inkjet printers. |
| EP89309028A EP0358487B1 (en) | 1988-09-07 | 1989-09-06 | Ink jet printer sealing apparatus |
| US07/403,435 US5055856A (en) | 1988-09-07 | 1989-09-06 | Capping device for ink jet printers |
| EP93200241A EP0541519B1 (en) | 1988-09-07 | 1989-09-06 | Ink jet printer sealing method and apparatus |
| DE68927712T DE68927712T2 (en) | 1988-09-07 | 1989-09-06 | Method and device for sealing an inkjet printer |
| SG1996004732A SG47854A1 (en) | 1988-09-07 | 1989-09-06 | Ink jet printer sealing method and apparatus |
| US07/748,217 US5252993A (en) | 1988-09-07 | 1991-08-21 | Capping apparatus for an ink jet printer |
| HK117795A HK117795A (en) | 1988-09-07 | 1995-07-20 | Ink jet printer sealing apparatus |
| HK97101838A HK1000463A1 (en) | 1988-09-07 | 1997-09-25 | Ink jet printer sealing method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27790988A JP2737174B2 (en) | 1988-11-02 | 1988-11-02 | Capping device for inkjet printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02122933A JPH02122933A (en) | 1990-05-10 |
| JP2737174B2 true JP2737174B2 (en) | 1998-04-08 |
Family
ID=17589985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27790988A Expired - Lifetime JP2737174B2 (en) | 1988-09-07 | 1988-11-02 | Capping device for inkjet printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2737174B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2799720B2 (en) * | 1989-01-13 | 1998-09-21 | キヤノン株式会社 | Ink jet recording device |
| JP2774640B2 (en) * | 1990-02-13 | 1998-07-09 | キヤノン株式会社 | Ink jet recording device |
| JP4958533B2 (en) * | 2006-12-19 | 2012-06-20 | キヤノン株式会社 | Inkjet recording device |
-
1988
- 1988-11-02 JP JP27790988A patent/JP2737174B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02122933A (en) | 1990-05-10 |
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