JPS6056558A - Removing method of clogging in ink jet printer - Google Patents
Removing method of clogging in ink jet printerInfo
- Publication number
- JPS6056558A JPS6056558A JP16601783A JP16601783A JPS6056558A JP S6056558 A JPS6056558 A JP S6056558A JP 16601783 A JP16601783 A JP 16601783A JP 16601783 A JP16601783 A JP 16601783A JP S6056558 A JPS6056558 A JP S6056558A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- nozzle
- pressure chamber
- clogging
- pressure
- 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.)
- Pending
Links
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
- B41J2/17—Ink jet characterised by ink handling
- B41J2/1707—Conditioning of the inside of ink supply circuits, e.g. flushing during start-up or shut-down
Landscapes
- Ink Jet (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分Ｉ！Ｆ）
１ｎ報処理装置などの出力装置とし゛ζ決用されるプリ
ンタは、文字の形成手段によっ′Ｃ母型文字型と画素型
（トンドア１−リソクス型）に分りられる。[Detailed description of the invention] [Technical part of the invention I! F) Printers used as output devices such as 1n information processing equipment can be classified into 'C matrix type character type and pixel type (tondoor 1-lithography type) depending on the means of forming characters.
画素型は文字だけでなく、グラフインク等のパターンも
表現できる。本発明は、後−ｈのトソト７１リソクス型
の印字手段の中の、インクを噴’ＩＪＬ’Ｃ文字やパタ
ーンを形成していくインフジエラ１．プリンタにおいて
、印字ヘッドのノズルの１１ｉｉｌＩ＋りを解除する方
法に関する。The pixel type can express not only characters but also patterns such as graph ink. The present invention is directed to the infusiera 1.1.1 in which ink is ejected to form 'IJL'C characters and patterns in a Tosoto 71 litho type printing means. The present invention relates to a method for releasing a nozzle of a print head in a printer.
第１図はインクジェットプリンタにおりる印字ヘッドと
インク供給機構を示す断面図である。１は印字ヘッドで
、圧力室２の側壁外面に取付りた電歪素子（振動子）３
を駆動して圧力室２の容積を変化させることで、圧力室
先端のノズル４からインク滴を噴出させる。噴出したイ
ンク滴が、ノズル先端に配設された印字媒体５に付着す
ることで、ドラ１−が形成される。６は、印字媒体５を
巻（Ｊりて支持するプラテンである。FIG. 1 is a sectional view showing a print head and an ink supply mechanism included in an inkjet printer. 1 is a print head, and an electrostrictive element (vibrator) 3 is attached to the outer surface of the side wall of the pressure chamber 2.
By driving the pressure chamber 2 to change the volume of the pressure chamber 2, ink droplets are ejected from the nozzle 4 at the tip of the pressure chamber. A driver 1- is formed by the ejected ink droplets adhering to the print medium 5 disposed at the tip of the nozzle. 6 is a platen that supports the printing medium 5 by rolling it around.
圧力室２の背部には、キャリッジに搭載されたサブタン
ク７が接続され、このり・プリンタ７から圧力室２にイ
ンクが供給される。ザブタンク７は、印字ヘッドｌがプ
ラテン６と平行に往復動する際の供給管８の伸縮や変形
で・インク供給系の圧力変動が発生し、圧力室２に空気
を吸入したりしてインク粒を形成不能となるのを防止す
るために、バッファとして設けられる。サブタンク７は
、印字へ７Ｆ’ １と共にキャリッジに搭載された状態
で、プラテン６にｌｒ％って往復動するので、リゾタン
カフの容量は限られている。そのため、イバ給１ゞ（８
およびバルブ９を介して、メインの−ｆシンクンク１０
に接ににされている。インクタンク１．０は、可１３２
性の材料でできており、′１’ｉ’；時ハネ１１で加圧
することで、ザブタンク７へのインク供給が行なわれる
。即しザブタンク７に設置）られノこ、インク４噴出器
で、ザブタンク内のインク量が少なく ）’、ｉ：った
ことが検出される吉、バルブ９が開い゛乙−ｆヌクタン
ク１０力・らザブタンク内−・インクが７１１１給され
る。A sub-tank 7 mounted on a carriage is connected to the back of the pressure chamber 2, and ink is supplied from the printer 7 to the pressure chamber 2. The subtank 7 is caused by the expansion, contraction and deformation of the supply pipe 8 when the print head l reciprocates in parallel with the platen 6. Pressure fluctuations in the ink supply system occur, and air is sucked into the pressure chamber 2, resulting in ink droplets. It is provided as a buffer to prevent it from becoming impossible to form. Since the sub-tank 7 is mounted on the carriage together with the print 7F' 1 and reciprocated by lr% relative to the platen 6, the capacity of the lysotan cuff is limited. Therefore, Iba Kyu 1゜ (8
and through valve 9, the main -f sink 10
It is closely related to Ink tank 1.0 is acceptable 132
Ink is supplied to the subtank 7 by pressurizing it with a spring 11. Immediately, the ink 4 ejector installed in subtank 7 detects that the amount of ink in the subtank is low. Ink is supplied from inside the subtank at 7111.
バルブ９およびインクタンクＩ ＯＬ＋、装置の本体側
に設置され、バルブ９とキ中リッジで移送されるザブタ
ンク７との間は、ｉｉＪ撓性の供給間８で接続される。The valve 9 and the ink tank IOL+ are installed on the main body side of the apparatus, and the valve 9 and the subtank 7 transferred by the ridge are connected by a flexible supply gap 8.
ところで印字ヘッドのノズル４は、・インクが乾燥し”
ζ成る固形物がＨＪしたり、圧力室２中の気泡のために
、目詰りを起し、−（ヌクの噴出を円１１１に行なえな
くなる。また気泡６月１： ｒｉｉｉ性に冨んでいるた
めに、電歪素子３ｃ圧力室２を加圧し）、−際に圧力が
気泡に吸収され、・インク拉の飛翔力か弱くなる。そこ
で通當は、１１字開始前にバルブ９を開いて、インクタ
ンク１０をハネ１１で加圧することにより、ザブタンク
７を介して圧力室２にインクを連続的に供給する。する
とノズル４がら連続的にインクか噴出して、圧力室内の
気ン０が一緒に排出され、またノズルに１−１竹したー
インクの固形物も剥離排除される。By the way, the ink in nozzle 4 of the print head is dry.
The solid material consisting of ζ may become HJ, or the air bubbles in the pressure chamber 2 may cause clogging, making it impossible to eject air into the circle 111. When the pressure chamber 2 of the electrostrictive element 3c is pressurized, the pressure is absorbed by the bubbles, and the flying force of the ink droplet becomes weaker. Therefore, in general, ink is continuously supplied to the pressure chamber 2 via the subtank 7 by opening the valve 9 and pressurizing the ink tank 10 with the spring 11 before the start of the 11th character. Then, ink is continuously ejected from the nozzle 4, and the air in the pressure chamber is discharged together with the ink, and the solid matter of the ink that is exposed to the nozzle is also peeled off and removed.
ところが第２図のよ・）に、ノズル４の内’ｊｉ：ｊに
位置してノズルの目詰りを起している大きな気？ＩＡ
Ｉ２の場合は、該気泡１２が−インク流に乗り易く、比
較的容易に排出でき、ｂが、第３図のよ・）に圧力室２
の側壁に何着した小さな気泡１３は、・Ｃヌク流の力を
受番月：＋１ ＜ 、壁面から剥離しデ１ｔい。そのた
めにこのような小さな気泡１３が集まり合体して大きな
気泡１２に成長し、インクの噴出力を低下させる。従っ
て印字ヘソ１−の使用中にインイノを噴出不能となるこ
とがしばし２ば発η−するので、周期的に目詰り解除の
操作を行なわ１１．にりればならず、印字速度を低下さ
−１ると７１（に、インクの消耗も激しくなる。なお第
２図の、１、・）な大きな気泡１２ ｃ；＋、圧力室２
中のインクの振動などでノズル４がら空気を引き込むこ
とで、あるいは第３図の、トうな小さな気泡１３・・・
が合体するごとで発生ずる。第３図の小さな気泡１３は
、インクの粒子化状態の変化によるメニスカス振幅の増
大に（Ｉ′・）空気の引き込のや、圧力室内でのキャビ
チーシー、インによって発生ずる。However, as shown in Figure 2, there is a large problem located at 'ji:j' in nozzle 4, which is causing nozzle clogging. IA
In the case of I2, the air bubbles 12 are easily carried by the ink flow and can be discharged relatively easily, and b is in the pressure chamber 2 as shown in Fig. 3.
The small air bubbles 13 that have landed on the side wall of the wall are detached from the wall surface by the force of the C flow. For this reason, such small bubbles 13 gather and coalesce to grow into large bubbles 12, reducing the ink jetting force. Therefore, during the use of the printing heel 1-, it often becomes impossible to eject ino, so periodically perform the operation to clear the clogging.11. If the printing speed is lowered by -1, the ink will be consumed more rapidly.In addition, large bubbles 12 c; +, pressure chamber 2 (see Fig. 2)
By drawing air through the nozzle 4 due to the vibration of the ink inside, or by drawing in air from the nozzle 4, small air bubbles 13 as shown in Figure 3...
It occurs every time the two are combined. The small bubbles 13 in FIG. 3 are generated by an increase in the meniscus amplitude due to a change in the particle state of the ink (I'), by the drawing of air, and by cavities in the pressure chamber.
〔発明の目的Ｊ
本発明の目的は、従来の・インクジ、ｙ、ｙ ｌプリン
タの印字ヘッドの目詰り解除方法に４）するごの、１、
うな問題を解消し、ノズルの［Ｉ詰りの遠因となる小さ
な気泡でも（ｉＴｆ実に１〕１出できるよ・）に−！ｌ
ることにある。[Objective of the Invention J The object of the present invention is to improve the conventional method of removing clogging from the print head of an inkjet printer,
It solves such problems and allows even small air bubbles, which are the cause of nozzle clogging, to come out (iTf actually 1)! l
There are many things.
この目的を達成するために講した本発明による技術的手
段は、ドロップ・オンデ゛７ン１力式の・インクジエソ
（−プリンタの１゛１１字−・）１°のｔ−ｊ詰りを解
除する際に、印字ヘソＩＸの圧力室に加圧インクを連続
的に供給し′Ｃノズルから圧力室中のインク４噴出させ
ると共に、振動子をｊ９１（動して振動さ・ｌる方法を
採っている。The technical means according to the present invention taken to achieve this objective is to clear the t-j blockage of 1 degree of the drop-on-den, 7-force type inkjet printer (-printer's 1st 11th character). At this time, pressurized ink is continuously supplied to the pressure chamber of the printing belly button IX, and the ink in the pressure chamber is ejected from the C nozzle, and the vibrator is moved to vibrate. There is.
次に本発明によるインクジェットプリンタの目詰り解除
力法が実際」二とのよ・）に具体化されるかを実施例で
説明する。本発明の場合も、目詰り解除を行なう際に、
１゛ＩＪ字ヘノ１１の圧力室２に、インクを連続的に供
給する。即ちバルブ９を開りて、ハネ１１の力でインク
タンク１０ヲ加圧することで、サブタンク７を介して圧
力室２にインクを連続的に供給する。すると圧力室２中
の−Ｃタンクノズル４から連続的に噴出する。同時に電
歪素子（振動子）３を駆動して振動させ、圧力室２の容
積をｉＴ１＋速で変化さ−Ｕる。すると圧力室２中の気
泡Ｉ２．１３も圧縮と膨張を繰り返し、その際に壁部へ
の何着条件が変化することで、あるいはインクの振動で
、各気泡１３・・・が壁部から剥離し、インク中に４Ｍ
する。そしてｎｊｊ記の３１、・）にインクタンクＩＯ
から供給された加圧・インクの流によって、ノズル４か
らＩＡ出される。またン復数の気泡１３・・・が振動を
受けることで、互いに合体して成長し昌くなり、第２図
のように排出し易い大きな気泡１２とな。Next, examples will be used to explain how the method for removing clogging in an inkjet printer according to the present invention is actually implemented. In the case of the present invention, when removing clogging,
1. Ink is continuously supplied to the pressure chamber 2 of the IJ-shaped hem 11. That is, by opening the valve 9 and pressurizing the ink tank 10 by the force of the springs 11, ink is continuously supplied to the pressure chamber 2 via the sub-tank 7. Then, the -C tank nozzle 4 in the pressure chamber 2 ejects continuously. At the same time, the electrostrictive element (vibrator) 3 is driven to vibrate, and the volume of the pressure chamber 2 is changed at iT1+ speed. Then, the air bubbles I2.13 in the pressure chamber 2 also repeat compression and expansion, and at that time, the conditions of how they adhere to the wall change, or the vibrations of the ink cause each air bubble 13... to separate from the wall. 4M in the ink
do. And ink tank IO in 31,...) of njj
IA is ejected from the nozzle 4 by the pressurized ink flow supplied from the nozzle 4. In addition, when the multiple bubbles 13 are subjected to vibration, they coalesce with each other, grow, and become larger, forming large bubbles 12 that are easy to discharge as shown in FIG.
゛Ｃ，容易にＩＪ＋出される。゛C, IJ+ is easily issued.
ごの、１うに圧力室２中の一インクを連わ“Ｃ的にＩ！
ｉ’１ｌ１１さ−ｕながら、電歪素子３を振動さｕ′Ｃ
５圧力室２の加圧を繰り返すごとこ、気〆包が壁部から
剥削して、インク流でノズルから１ノ１出する。この１
（γ第２図に１２で示すような大きな気ｌ包１２も、第
３図に１３で示すよ・うな小さな気泡も総゛Ｃ，壁部か
らヱＩＩ Ａｆｔ ｌＪｌ′出される。またインクの噴
出２１１性に大きな影響を及はず大きな気泡の量率とな
る小さな気泡１３・・・も確実に壁部から剥１１＋１１
ＪＩ出されるのご、１１詰り解除操作の頻度も少な（て
、Ｊ、い。Now, one sea urchin connects one ink in pressure chamber 2 "C-wise I!"
While i'1l11 -u, the electrostrictive element 3 is vibrated u'C
5 As the pressure chamber 2 is repeatedly pressurized, the air envelope is scraped off from the wall and a stream of ink is ejected from the nozzle one by one. This one
(γ Both the large air bubbles 12 shown at 12 in Fig. 2 and the small air bubbles shown at 13 in Fig. 3 are all ejected from the wall. 211. Small bubbles 13, which do not have a large effect on the properties and have a large bubble mass ratio, are also reliably peeled off from the wall 11+11.
Since JI is issued, the frequency of 11 clogging release operations is also low (te, J, i.
以」二のように本発明によれば、ｌ：’ ｔ＋ ’７プ
・」ンデマンド方式のインクジエソＩプリンタの印字−
・ノドの目詰り解除する際に、叩宇−＼ノ１０月ｉ力室
に加圧インクを連続的に供給し゛ＣノスルかＧｊｌ力室
中のインクを噴出さ・ｌ！ながら、振動ｒを駆１萌して
振動さ・Ｕることで、圧力室中の加圧をＮ’＋’：り返
−」一方法を採っている。そのため、壁部に（Ｊ ｉ’
ｉ している微小な気泡も確実に剥離し更に瓦いに合体
して排出することができ、１１詰り）す￥除操作の頻度
が大幅に削減され、プリンタの印字速度が向上しインク
の消耗が減少する。According to the present invention, as described in ``2'' below, the printing of the inkjeso I printer of the on-demand method is as follows:
・When unblocking the nozzle, continuously supply pressurized ink to the force chamber and eject the ink in the C nozzle or Gjl force chamber・l! At the same time, one method is adopted in which the pressure in the pressure chamber is increased by increasing the vibration r and causing the vibration. Therefore, on the wall (J i'
It is possible to reliably remove microscopic air bubbles that are present in the air and then combine them into debris before being discharged, which greatly reduces the frequency of the removal operation (11 clogs), improves the printing speed of the printer, and reduces ink consumption. decreases.
第１図は・インクジエソ１−プリンタの印字ヘソ１およ
びインク供給系を示すＷ１面図、第２図と第３図は気泡
の種頬とｆλＪ着状況を示す断面図である。
図において、１は印字−・ノド、２は圧力室、３は電歪
素子（振動子）、４はノズル、１０はインクタンク、１
２．１３は気泡をそれぞれ示す。
特許出願人 冨゛士通株式会社
代理人 弁理士 青 柳 稔FIG. 1 is a W1 side view showing the printing press 1 and ink supply system of the inkjet printer 1, and FIGS. 2 and 3 are cross-sectional views showing the seeds of air bubbles and the state of fλJ deposition. In the figure, 1 is a printing gutter, 2 is a pressure chamber, 3 is an electrostrictive element (vibrator), 4 is a nozzle, 10 is an ink tank, 1
2.13 indicates a bubble, respectively. Patent applicant Fujitsu Co., Ltd. Agent Patent attorney Minoru Aoyagi
Claims (1)
プリンタの印字ヘッドの１」詰りを解除する際に、印字
ヘッドの圧力室に加圧インクを連続的に供給してノズル
から圧力室中のインクを噴出さ・υると共に、振動子を
駆動して振動させることを特徴とするインクジェットプ
リンタの目詰りｐＡ′除力法方1. When clearing a blockage in the print head of a printer using the Rozzo on-demand method, pressurized ink is continuously supplied to the pressure chamber of the print head and released from the nozzle into the pressure chamber. A method for removing force from clogging pA' in an inkjet printer, characterized by ejecting and ejecting ink and driving a vibrator to vibrate it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16601783A JPS6056558A (en) | 1983-09-09 | 1983-09-09 | Removing method of clogging in ink jet printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16601783A JPS6056558A (en) | 1983-09-09 | 1983-09-09 | Removing method of clogging in ink jet printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6056558A true JPS6056558A (en) | 1985-04-02 |
Family
ID=15823365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16601783A Pending JPS6056558A (en) | 1983-09-09 | 1983-09-09 | Removing method of clogging in ink jet printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6056558A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1630213A1 (en) | 2003-05-14 | 2006-03-01 | Konica Minolta Medical & Graphic, Inc. | Ink-jet ink set and recording method using the same |
-
1983
- 1983-09-09 JP JP16601783A patent/JPS6056558A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1630213A1 (en) | 2003-05-14 | 2006-03-01 | Konica Minolta Medical & Graphic, Inc. | Ink-jet ink set and recording method using the same |
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