JPS58188667A - Ink jet recording head - Google Patents

Ink jet recording head

Info

Publication number
JPS58188667A
JPS58188667A JP7169582A JP7169582A JPS58188667A JP S58188667 A JPS58188667 A JP S58188667A JP 7169582 A JP7169582 A JP 7169582A JP 7169582 A JP7169582 A JP 7169582A JP S58188667 A JPS58188667 A JP S58188667A
Authority
JP
Japan
Prior art keywords
ink
ink flow
liquid chamber
flow path
hermetically closed
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
Application number
JP7169582A
Other languages
Japanese (ja)
Inventor
Takuo Isayama
伊佐山　拓郎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7169582A priority Critical patent/JPS58188667A/en
Priority to DE19833311956 priority patent/DE3311956A1/en
Publication of JPS58188667A publication Critical patent/JPS58188667A/en
Priority to US06/778,281 priority patent/US4591883A/en
Pending legal-status Critical Current

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
    • B41J2/135—Nozzles
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2/14201—Structure of print heads with piezoelectric elements
    • 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
    • B41J2/14—Structure thereof only for on-demand ink jet heads
    • B41J2002/14379—Edge shooter

Landscapes

  • Particle Formation And Scattering Control In Inkjet Printers (AREA)

Abstract

PURPOSE:To facilitate the integration of an ink jet recording head, by a method wherein an ink pressurizing chamber is separated from an ink flow passage to be formed into a hermetically closed liquid chamber as a separate structure and the change in the volume of this hermetically closed liquid chamber is transmitted to the ink flow passage through a rigid body to differentiate the heights between adjacent hermetically closed liquid chambers. CONSTITUTION:An ink flow passage 4 having a nozzle 1 provided to the leading end thereof and a hermetically closed liquid chamber 2' having an electrostriction vibrator 3 mounted to the wall surface thereof are independently provided and the change in the volume of the hermetically closed liquid chamber 2' is transmitted to the ink flow passage 4 through a rigid body 10 such as a stainless steel rod. By differentiating the length of the rigid body 10 by each ink jet units, each units can be arranged in an approaching state to each other and an ink jet head 5 wherein plural units are integrated in compact state can be obtained.

Description

【発明の詳細な説明】 本発明は、インクジェットヘッドのノズル部よりインク
粒子を噴射させてｈ［Ｊ録紙その他の言ピ録媒体に所望
の図形・文字等を印写するインクジェット記録ヘッドの
改良に係り、特に、従来のインクジェットヘッドのイン
ク流通路中に該インク流通路と一体的につまり該インク
流通路に連通して設けられていたインク加圧室を該イン
ク流通路から分離して別体構成の密閉液室とし、該密閉
液室の体積を振動ユニットにて変化させ、その体積変化
を剛体を介してインク流通路に伝達するようにし、もっ
て、密閉液室の高さ位置を任意に設定できるようにし、
ヘッド集積化に際し、隣接する密閉液室の高さを異なら
しめて陽接沿室間の距離を短縮可能とし、ヘッドの集積
化を容易にしたものである０ 第１図は、従来のインクジェット記録ヘッドの一例を示
す側断面図、第２図は、第１図の■−■鯉より見た図で
、図中、１はノズル孔、２１ｄインク加圧室、３は電歪
振側子、４はインク流通路、５はヘッド本体、６はヘッ
ド上板、７１ハインク供給口管、８はインク供給配管チ
ューブで、周知のように、電歪振動子３を振動させてイ
ンク加ＦＥ室の体積を急激に変化させてノズル孔１より
インク粒子を噴射させ、該インク粒子により図示し々い
号己録紙上に印写を行っている。しかしながら、上述の
ごとき従来のインクジェット記録ヘッド１（Ｌｌ　イン
ク加圧室の壁に直接電歪振動子を取り付けるようにして
いるため、該インク加圧室の体ヤ変化を大きくするため
には、電歪振動子の面積を広くしなければならず、従っ
て、インク加圧室の面積を広くしなければならず、ヘッ
ドのマルチ化（集積化）に限界があった。DETAILED DESCRIPTION OF THE INVENTION The present invention is an improvement in an inkjet recording head that prints desired figures, characters, etc. on recording paper or other recording media by ejecting ink particles from the nozzle portion of the inkjet head. In particular, the ink pressurizing chamber, which was provided in the ink flow path of a conventional inkjet head integrally with the ink flow path, that is, in communication with the ink flow path, is separated from the ink flow path and separated. The volume of the sealed liquid chamber is changed by a vibration unit, and the change in volume is transmitted to the ink flow path via a rigid body, so that the height position of the sealed liquid chamber can be adjusted arbitrarily. so that it can be set to
When integrating heads, the heights of adjacent sealed liquid chambers are made different, making it possible to shorten the distance between adjacent chambers, making it easier to integrate heads.0 Figure 1 shows a conventional inkjet recording head. A side cross-sectional view showing an example, FIG. 2, is a view seen from the ■-■ carp in FIG. 5 is an ink flow path, 5 is a head main body, 6 is a head upper plate, 71 is an ink supply port pipe, and 8 is an ink supply piping tube. The ink droplets are ejected from the nozzle hole 1 by rapidly changing the speed, and the ink droplets are used to print on recording paper of various sizes as shown in the figure. However, since the electrostrictive vibrator is attached directly to the wall of the ink pressurizing chamber in the conventional inkjet recording head 1 (Ll) as described above, it is necessary to The area of the strain oscillator had to be widened, and therefore the area of the ink pressurizing chamber had to be widened, and there was a limit to the multiplication (integration) of heads.

本発明は、上述のごとき従来技術の欠点を解消するため
になされたもので、基本的には、上述のごときインク加
圧室をインク流通路から分離して別体構成の密閉液室と
し、該密閉液室の体１゛８変化を剛体を介してインク流
通路に伝達するようにし、もって、隣接した密閉液室間
の高さを異ならしめて隣接距離を短縮ゼしめ、ヘッドの
集権化を容易の振動に応じたインク粒子づ；噴射される
／・；、本イゝ明によると、密閉液室２′　とインク流
通路４とを分離して別体構成にしているので、［’、Ｉ
Ｉ体１０体長０を異ならしめて密閉液室２１　　の高さ
を任１τ゛に設定することができ、従って、第６図に示
すよ゛）に、隣接した密閉液室の高さを異なち゛しめる
ことによって隣接した密閉・液室間の距離を短縮せしめ
、ヘッドの集積化を図ることができる。第７図は、第６
図のヘッド本体５のインク流通路を上部から璧だ図で、
図中、１２はインク供給共通宇を示すが、図示のように
、本発明によると、インクｊＵ、　、＋ｒ回路４１．４
□・・・・・にインク加圧室を設ける必要がプｒいので
、これらインク流通路を接近して設けることができ、こ
れと前記密閉液室の高さを異ならしめて密閉令室間の間
隔を短縮せしめることが相俟って置端化を容易にしてい
る。なお、以上の図示例においては、密閉液室の体積変
化をステンレス、ニッケル、りんせい銅等の今晩薄板又
はその他のツ１ｒ性部材９１．９□及び剛体１０を介し
てインク流通路に伝神する例を示したが、本発明は、図
示実施例に限♀されるものではなく、例えば、第６図に
おいて、各インク流通路に個々に弾性部材９２１．９２
２　　・　を設けず、ヘッド本体の上蓋全体を嚇−の弾
性体で構成するようにしてもよい。The present invention has been made in order to eliminate the drawbacks of the prior art as described above, and basically, the ink pressurizing chamber as described above is separated from the ink flow path to form a sealed liquid chamber of a separate structure, The body 18 change of the sealed liquid chamber is transmitted to the ink flow path through the rigid body, thereby making the heights between adjacent sealed liquid chambers different, shortening the adjacent distance, and centralizing the head. According to the present invention, since the sealed liquid chamber 2' and the ink flow path 4 are separated and configured as separate bodies, the ink particles are ejected in response to the vibration of the ink droplet. I
The height of the sealed liquid chamber 21 can be set to any value of 1τ by making the body length 0 of the I-body 10 different. Therefore, the height of the adjacent sealed liquid chamber can be made to be different as shown in Fig. 6. By doing so, the distance between adjacent sealed/liquid chambers can be shortened and heads can be integrated. Figure 7 shows the 6th
The ink flow path of the head body 5 shown in the figure is viewed from above.
In the figure, 12 indicates an ink supply common circuit, and as shown in the figure, according to the present invention, ink jU, , +r circuits 41.4
□ Since it is necessary to provide an ink pressurizing chamber in The shortening of the spacing also makes it easier to place the ends. In the illustrated example above, the change in volume of the sealed liquid chamber is transmitted to the ink flow path through a thin plate made of stainless steel, nickel, phosphorized copper, or other rigid member 91.9 and the rigid body 10. However, the present invention is not limited to the illustrated embodiment. For example, in FIG.
2. The entire upper cover of the head body may be made of an elastic material without providing the above.

以上の説明から明らかなように、本発明によると、各加
圧液室（密閉液室）の隣接距離を知縮することが可能と
なってヘッドの集積化が容易となり、同時に、加圧液室
とインク流通路を別々に加工組立を行うことが可能とな
ってヘッドの加工組立が容易となる等の利点がある。As is clear from the above description, according to the present invention, it is possible to shorten the distance between adjacent pressurized liquid chambers (sealed liquid chambers), facilitating the integration of heads, and at the same time It is possible to process and assemble the chamber and the ink flow path separately, which has advantages such as facilitating the process and assembly of the head.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、従来のインクジェット記録ヘッドの一例を示
す側断面図、第２図（１、第１図の■−１１線より見た
図、第３図は、本発明によるインクジェット記録ヘッド
の一実施例を説明するための側断面図、第４図は、第３
図のＩＶ　−ＩＶ線より見た図、第５図は、第３図の■
−Ｖ線より見た図、第６図は、本発明をマルチ（集積化
）ノズルに適用した場合の一例を示す斜視図、第７図は
、第６図のヘッド本体のインク流通路を上部から児だ１
ン１である。 １．１１〜１４　・・ノズル孔、２・インクｌｎ　Ｆ丘
室、２′・・・密閉液室、３・振動ユニット、４．４１
〜４３　　インク流通路、５・・・ヘッド本体、６・・
ヘッド上板、７・インク供給口管、８・・インク（ｉｔ
　ＦＡ　ｌ”Ｉｔ↓管チューブ、９１．９□、９□１〜
９□４・・弾性体、１（１，１０１〜１０４−・剛体、
１１．１１１−・支持体０特許出願人　　　株式会社リ
コー　・′１、′−〕FIG. 1 is a side cross-sectional view showing an example of a conventional inkjet recording head, FIG. 2 is a view taken from line 1-11 in FIG. A side sectional view for explaining the embodiment, FIG.
Figure 5, as seen from the IV-IV line in the figure, is
6 is a perspective view showing an example of the case where the present invention is applied to a multi (integrated) nozzle, and FIG. 7 shows the ink flow path of the head main body in FIG. It's a baby 1
It is 1. 1.11-14... Nozzle hole, 2. Ink ln F hill chamber, 2'... Sealed liquid chamber, 3. Vibration unit, 4.41
~43 Ink flow path, 5...head body, 6...
Head upper plate, 7. Ink supply port pipe, 8. Ink (it
FA l”It↓tube, 91.9□, 9□1~
9□4...Elastic body, 1(1,101~104-...Rigid body,
11.111-・Support 0 Patent applicant: Ricoh Co., Ltd.・'1,'-]

Claims (3)

【特許請求の範囲】[Claims] （１）、振動ユニットを壁面の一部として有１、該４％
−。 動ユニットによってその内部体積が電化さノする糸間液
室と、インクジェットヘッドのノズルも）に胆じるイン
ク流通路とを別体に有し、前記液象の体積変化を剛体を
介して前記インク流通路の一部に伝達して該インク流通
路のインクを加圧し、前記ノズル部よりインクを粒子化
して噴射するようにしたことを特徴とするインクジェッ
ト記録ヘッド。(1) With the vibration unit as part of the wall 1, 4%
−. It has a separate inter-thread liquid chamber, the internal volume of which is electrified by the dynamic unit, and an ink flow path that connects to the nozzle of the inkjet head. An inkjet recording head characterized in that pressure is transmitted to a part of an ink flow path to pressurize ink in the ink flow path, and the ink is made into particles and ejected from the nozzle portion. （２）、前記液室の前記剛体が接続されている部分が弾
性部材で構成されていることを特徴とする特許請求の範
囲第（１）項に記載のインクジェット配録ヘッド。(2) The inkjet recording head according to claim (1), wherein a portion of the liquid chamber to which the rigid body is connected is made of an elastic member. （３）、前記インク流通路の少なくとも一部が弾性部材
で構成され、該弾性部材に前記剛体の一端が接続さ力て
いることを特徴とする特許請求のｉｌ、！囲第（１ｉ項
又は第（２）項に記載のインクジェット記録ヘッド。(3) At least a portion of the ink flow path is made of an elastic member, and one end of the rigid body is connected to the elastic member. The inkjet recording head according to item (1i) or item (2).
JP7169582A 1982-03-31 1982-04-29 Ink jet recording head Pending JPS58188667A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP7169582A JPS58188667A (en) 1982-04-29 1982-04-29 Ink jet recording head
DE19833311956 DE3311956A1 (en) 1982-03-31 1983-03-31 COLOR JET PRINTER HEAD
US06/778,281 US4591883A (en) 1982-03-31 1985-09-19 Ink-jet printer head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7169582A JPS58188667A (en) 1982-04-29 1982-04-29 Ink jet recording head

Publications (1)

Publication Number Publication Date
JPS58188667A true JPS58188667A (en) 1983-11-04

Family

ID=13467931

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7169582A Pending JPS58188667A (en) 1982-03-31 1982-04-29 Ink jet recording head

Country Status (1)

Country Link
JP (1) JPS58188667A (en)

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