JPH0259769B2 - - Google Patents
Info
- Publication number
- JPH0259769B2 JPH0259769B2 JP58195926A JP19592683A JPH0259769B2 JP H0259769 B2 JPH0259769 B2 JP H0259769B2 JP 58195926 A JP58195926 A JP 58195926A JP 19592683 A JP19592683 A JP 19592683A JP H0259769 B2 JPH0259769 B2 JP H0259769B2
- Authority
- JP
- Japan
- Prior art keywords
- ink
- plate
- distribution plate
- diaphragm
- ink distribution
- 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
- 238000009826 distribution Methods 0.000 claims description 34
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000000806 elastomer Substances 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 3
- 239000004945 silicone rubber Substances 0.000 claims description 3
- 239000000976 ink Substances 0.000 description 61
- 230000001133 acceleration Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 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
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
Landscapes
- Ink Jet (AREA)
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Description
【発明の詳細な説明】
〔発明の属する技術分野〕
この発明は圧電により噴射されるノズルを有す
る多色用インクジエツトマトリツクス印字ヘツド
にかかわる。DETAILED DESCRIPTION OF THE INVENTION [Field of the Invention] This invention relates to a multicolor inkjet matrix printhead having piezoelectrically ejected nozzles.
圧電により噴射されるノズルを有するインクジ
エツトマトリツクス印字ヘツドは、“ジーメンス
ーツアイトシユリフト（SIEMENS−
Zeitschrift）”第51巻、1977年、第４号、第219な
いし221頁に記載の論文“印刷端末のための無騒
音インク印字”により知られている。
The inkjet matrix print head with piezoelectrically ejected nozzles is manufactured by SIEMENS-
Zeitschrift, Vol. 51, No. 4, 1977, pp. 219-221.
かかる印字ヘツドを多色同時処理のために用い
ようとするならば、各種のインクのインク貯蔵容
器から印字ヘツドのマトリツクスの定められたノ
ズルへの分配を受持つ部品が必要となる。 If such a print head is to be used for simultaneous multi-color processing, components are required which are responsible for dispensing the various inks from the ink reservoirs to defined nozzles of the print head matrix.
各色のインクを導く溝相互間の封止のみなら
ず、分配のために設けられた部品の外への封止も
また印字ヘツドの正常な運転のための基本条件で
ある。 Sealing not only between the grooves conducting the ink of each color, but also to the outside of the parts provided for distribution is a basic condition for the normal operation of the printing head.
印刷機の移動の際や印字ヘツドの運動中に供給
溝の中のインク柱を分離させる加速度が生じう
る。こうしてインク流路に発生した気泡は印字過
程に障害を起こす。それ故にインク流路には加速
によりインクに生じる負圧を補償する手段が設け
られなければならない。圧電により噴射されるノ
ズルによるインク滴の形成の際にインクの中には
ノズル開口の方向ばかりでなくインク供給側にも
圧力波が伝わる。この逆走する圧力波の反射は次
の噴射過程の障害となりうる。それゆえに逆走す
る圧力波が反射して著しく弱まるようにその中で
減衰する手段を設ける必要がある。 Accelerations can occur during movement of the printing press or movement of the print head that cause the columns of ink in the feed channel to separate. The bubbles thus generated in the ink flow path cause trouble in the printing process. The ink flow path must therefore be provided with means to compensate for the negative pressure created in the ink by acceleration. When an ink droplet is formed by a piezoelectrically ejected nozzle, pressure waves are transmitted within the ink not only in the direction of the nozzle opening but also on the ink supply side. The reflection of this pressure wave traveling in the opposite direction can interfere with the next injection process. It is therefore necessary to provide damping means therein so that the pressure waves traveling backwards are reflected and weakened significantly.
この発明は、印字ヘツドの移動時又はインク噴
射時にインク溝内に気泡が発生することのない印
字品質の良好な、しかも構造が簡単で製作容易な
インク分配板を提供することを目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide an ink distribution plate which has good print quality without generating bubbles in ink grooves when a print head moves or when ink is ejected, and which is simple in structure and easy to manufacture.
この目的はこの発明にもとづき頭記のインク分
配板において、インク分配板としてインク流出口
を有する支持板と組立板との間に装着されたエラ
ストマ板が用いられ、このエラストマ板が支持板
に向かつて開放されたインク溝と補償室とを備
え、補償室が組立板側に向い組立板と間隔を隔て
て分配板と一体に付加成形された円形状のダイヤ
フラムにより閉鎖され、さらにこのダイヤフラム
は前記インク溝の幅寸法に比して大きな直径寸法
を有しダイヤフラムとしての有効面積が大きくな
るように成形されており、またインク溝と補償室
とにインクを導くためにインク分配板の縁面に孔
を備えることにより達成される。エラストマ板は
インク分配板としてその開放された溝や室と共に
簡単な型の中で射出成形品として製作されうる。
このエラストマ板は個々の溝や室を相互にまたは
他の部品に対してパツキンを追加することなく自
ら封止する。補償室のダイヤフラムはインク分配
板と同じ材質から成る。インクの供給は分配板の
縁面から行なわれ、供給口の挿入された細管に対
し十分に長い封止距離を有する。それでこの印字
ヘツドへのインク供給口は交換されるインク貯蔵
容器に対する切離し箇所を形成する。
This purpose is achieved by using an elastomer plate installed between a support plate having an ink outlet and an assembly plate as the ink distribution plate in the above-mentioned ink distribution plate according to the present invention, and this elastomer plate is directed toward the support plate. The compensation chamber is closed by a circular diaphragm which faces the assembly plate and is spaced apart from the assembly plate and is integrally molded with the distribution plate, and this diaphragm The diaphragm has a diameter larger than the width of the ink groove, and is formed to have a large effective area as a diaphragm, and a diaphragm is formed on the edge of the ink distribution plate to guide ink to the ink groove and the compensation chamber. This is achieved by providing holes. The elastomeric plate can be made as an ink distribution plate with its open grooves and chambers as an injection molded part in a simple mold.
This elastomeric plate self-seals the individual grooves and chambers to each other or to other parts without the need for additional seals. The diaphragm of the compensation chamber is made of the same material as the ink distribution plate. The supply of ink takes place from the edge of the distribution plate, which has a sufficiently long sealing distance to the inserted capillary of the supply opening. The ink supply to this print head then forms a disconnection point for the ink reservoir to be replaced.
インク分配板のエラストマの材料としてはシリ
コンゴムを用いるのが良い。 Silicone rubber is preferably used as the elastomer material of the ink distribution plate.
つぎにこの発明にもとづくインク分配板の実施
例を示す図面によりこの発明を詳細に説明する。
Next, the present invention will be explained in detail with reference to drawings showing embodiments of an ink distribution plate based on the present invention.
第１図においてシリコンゴムから成る直角四角
形のインク分配板１の中に完全に埋込まれて走り
縁面に開口する孔２，３，４及び５が示されてい
る。インク分配板の手前側の表面に開放されてい
るインク溜め室６，７，８及び９から補償室１
４，１５，１６及び１７へ同様に手前側の面に開
放された溝１０，１１，１２及び１３が通じてい
る。これら補償室は第２図からも分かるように、
第１図のインク分配板の手前側の表面に向つてイ
ンク分配板と同一の材料から成るダイヤフラムに
より閉鎖されている。ダイヤフラムは弾性的に柔
軟であるからインク流路の中の圧力衝撃を大きい
反発力なしに和らげうる。別の開放された溝１
８，１９，２０及び２１が補償室１４，１５，１
６及び１８から図示されていない支持板の流出口
へ通じており、この流出口からインク流路はさら
にノズルの方に向う。インク分配板１は前記の支
持板及び同様に図示されていない組立板の間に挿
入され、穴２６，２７，２８及び２９に貫挿され
た４本の組立用ボルトによりこの両板の間に締付
けられる。 In FIG. 1, holes 2, 3, 4 and 5 are shown which are completely embedded in a rectangular ink distribution plate 1 made of silicone rubber and which open into the running edge surface. The compensation chamber 1 is connected to the ink reservoir chambers 6, 7, 8 and 9 which are open to the front surface of the ink distribution plate.
4, 15, 16 and 17 are communicated with grooves 10, 11, 12 and 13 which are also open on the front side. As can be seen from Figure 2, these compensation chambers are
It is closed towards the front surface of the ink distribution plate of FIG. 1 by a diaphragm made of the same material as the ink distribution plate. Since the diaphragm is elastically flexible, it can absorb pressure shocks in the ink flow path without significant repulsion. Another open groove 1
8, 19, 20 and 21 are compensation rooms 14, 15, 1
6 and 18 lead to an outlet in a support plate (not shown), from which the ink flow path leads further towards the nozzle. The ink distribution plate 1 is inserted between the aforementioned support plate and an assembly plate, also not shown, and is fastened between the two plates by means of four assembly bolts inserted through holes 26, 27, 28 and 29.
第２図において、上方には組立用ボルトの孔が
破線で示され、板の下側部分には切断線Ａ，Ｂに
より切断された補償室１６が示されている。イン
クはインク分配板１の縁面の孔４、インク溜め室
８及び溝１２を経て補償室１６に供給される。 In FIG. 2, the holes for the assembly bolts are shown in broken lines in the upper part, and the compensation chambers 16 cut along cutting lines A and B are shown in the lower part of the plate. Ink is supplied to the compensation chamber 16 through the holes 4 in the edge of the ink distribution plate 1, the ink reservoir chamber 8 and the groove 12.
圧電により噴射されるノズルを有する多色用イ
ンクジエツトマトリツクス印字ヘツドのインク分
配板において、この発明にもとづきインク分配板
としてインク流出口を有する支持板と組立板との
間に装着されたエラストマ板が用いられ、このエ
ラストマ板が支持板に向つて開放されたインク溝
と補償室とを備え、補償室が組立板側に向い組立
板と間隔を隔てて分配板と一体に付加成形された
ダイヤフラムにより閉鎖され、またインク溝と補
償室とにインクを導くためにインク分配板の縁面
に孔が備えられる。
In an ink distribution plate of a multicolor ink jet matrix printing head having piezoelectrically ejected nozzles, an elastomer plate is installed as an ink distribution plate between a support plate having an ink outlet and an assembly plate according to the present invention. The elastomer plate is equipped with an ink groove and a compensation chamber that are open toward the support plate, and a diaphragm that is integrally molded with the distribution plate, with the compensation chamber facing the assembly plate and spaced apart from the assembly plate. and holes are provided in the edge of the ink distribution plate for guiding ink into the ink groove and the compensation chamber.
インク分配板がエラストマから成つているの
で、これを支持板と締合せたときに両板の間に特
別のパツキンを用いなくともインク流路間又は外
部へのインクの漏れがインク分配板が支持板表面
になじんで密着することにより完全に防止され
る。インク溝及び室は縁面に設けた孔を除きイン
ク分配板の表面に開放されているので型を用いて
容易に成形される。圧力補償室はインク分配板と
一体に成形された柔軟なダイヤフラムにより閉鎖
され、印刷機の移動又は印字ヘツドの運動時に加
速度によりインク流路に発生する負圧をダイヤフ
ラムのたわみにより補償して気泡の発生を防ぎ、
またインクをノズルから噴射するために圧電によ
りインクの中に発生させた圧力波の逆走分をダイ
ヤフラムのたわみにより減衰させて反射波がノズ
ルの方へ進行するのを防ぐ。これにより印刷の品
質が向上する。縁面の穴にはインク貯蔵容器から
の細管がパツキンを用いずに挿入され操作簡便な
切離し箇所を形成する。このインク分配板は多色
用印字ヘツドにおいても単一の製作容易な部品か
ら成り経済的である。 Since the ink distribution plate is made of elastomer, when it is fastened to the support plate, there is no need to use a special seal between the two plates to prevent ink from leaking between the ink channels or to the outside. It can be completely prevented by getting used to it and adhering to it. Since the ink grooves and chambers are open to the surface of the ink distribution plate except for the holes provided in the edge surface, they can be easily formed using a mold. The pressure compensation chamber is closed by a flexible diaphragm integrally molded with the ink distribution plate, and the deflection of the diaphragm compensates for the negative pressure generated in the ink flow path due to acceleration during the movement of the printing press or the movement of the print head. prevent the occurrence of
In addition, the deflection of the diaphragm attenuates the backward traveling portion of the pressure wave generated in the ink by piezoelectricity in order to eject the ink from the nozzle, thereby preventing the reflected wave from proceeding toward the nozzle. This improves the quality of printing. A thin tube from an ink storage container is inserted into the hole in the edge surface without using a gasket to form an easy-to-operate separation point. The ink distribution plate is economical as it is a single, easily manufactured component, even in multicolor print heads.
第１図はこの発明にもとづくインク分配板の一
実施例の平面図、第２図は第１図に示すインク分
配板の切断線Ａ−Ｂによる断面図である。
図面において、１はインク分配板、２，３，
４，５は孔、１０，１１，１２，１３，１８，１
９，２０，２１はインク溝、１４，１５，１６，
１７は補償室、である。
FIG. 1 is a plan view of an embodiment of an ink distribution plate according to the present invention, and FIG. 2 is a cross-sectional view of the ink distribution plate shown in FIG. 1 along line A--B. In the drawing, 1 is an ink distribution plate, 2, 3,
4 and 5 are holes, 10, 11, 12, 13, 18, 1
9, 20, 21 are ink grooves, 14, 15, 16,
17 is a compensation room.
Claims (1)
インクジエツトマトリツクス印字ヘツドのインク
分配板において、インク分配板としてインク流出
口を有する支持板と組立板との間に装着されたエ
ラストマ板が用いられ、このエラストマ板が支持
板に向かつて開放されたインク溝と補償室とを備
え、補償室が組立板側に向い組立板と間隔を隔て
て分配板と一体に付加成形された円形状のダイヤ
フラムにより閉鎖され、さらにこのダイヤフラム
は前記インク溝の幅寸法に比して大きな直径寸法
を有しダイヤフラムとしての有効面積が大きくな
るように成形されており、またインク溝と補償室
とにインクを導くためにインク分配板の縁面に孔
を備えることを特徴とするインク分配板。 ２ 特許請求の範囲第１項に記載のインク分配板
において、エラストマとしてシリコンゴムが用い
られることを特徴とするインク分配板。[Scope of Claims] 1. In an ink distribution plate of a multicolor ink jet matrix printing head having piezoelectrically ejected nozzles, the ink distribution plate is installed between a support plate having an ink outlet and an assembly plate. An elastomer plate is used, and this elastomer plate is provided with an ink groove and a compensation chamber that are open toward the support plate, and the compensation chamber faces the assembly plate side and is integrally molded with the distribution plate at a distance from the assembly plate. The diaphragm is closed by a circular diaphragm, which has a larger diameter than the width of the ink groove, and is shaped to have a larger effective area as a diaphragm. An ink distribution plate comprising holes on an edge surface of the ink distribution plate for guiding ink to a chamber. 2. The ink distribution plate according to claim 1, characterized in that silicone rubber is used as the elastomer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19823238608 DE3238608A1 (en) | 1982-10-19 | 1982-10-19 | Ink distributor plate |
| DE3238608.7 | 1982-10-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5995150A JPS5995150A (en) | 1984-06-01 |
| JPH0259769B2 true JPH0259769B2 (en) | 1990-12-13 |
Family
ID=6176018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19592683A Granted JPS5995150A (en) | 1982-10-19 | 1983-10-19 | Distributing plate for ink |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5995150A (en) |
| DE (1) | DE3238608A1 (en) |
| FR (1) | FR2534527A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007190772A (en) * | 2006-01-18 | 2007-08-02 | Seiko Epson Corp | Droplet ejection head, droplet ejector, process for manufacturing droplet ejection head, and process for manufacturing droplet ejector |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4695854A (en) * | 1986-07-30 | 1987-09-22 | Pitney Bowes Inc. | External manifold for ink jet array |
| SE458189B (en) * | 1987-07-13 | 1989-03-06 | Markpoint System Ab | DEVICE FOR PRINTER USING PRINTED, LIQUID MEDIUM FOR RECORDING THE SIGNS OF AN INFORMATION BEARER |
| JPH01308644A (en) * | 1988-06-07 | 1989-12-13 | Canon Inc | Ink-jet recording head |
| JP4333724B2 (en) | 2006-10-05 | 2009-09-16 | セイコーエプソン株式会社 | Droplet discharge head, droplet discharge device, method for manufacturing droplet discharge head, and method for manufacturing droplet discharge device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675865A (en) * | 1979-11-26 | 1981-06-23 | Fujitsu Ltd | Recording head for ink jet recorder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK474376A (en) * | 1975-10-28 | 1977-04-29 | Xerox Corp | MULTIPLE ARRANGEMENT OF INK OR PRINT NOZZLE |
-
1982
- 1982-10-19 DE DE19823238608 patent/DE3238608A1/en not_active Ceased
-
1983
- 1983-10-18 FR FR8316533A patent/FR2534527A1/en active Pending
- 1983-10-19 JP JP19592683A patent/JPS5995150A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5675865A (en) * | 1979-11-26 | 1981-06-23 | Fujitsu Ltd | Recording head for ink jet recorder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007190772A (en) * | 2006-01-18 | 2007-08-02 | Seiko Epson Corp | Droplet ejection head, droplet ejector, process for manufacturing droplet ejection head, and process for manufacturing droplet ejector |
| JP4735281B2 (en) * | 2006-01-18 | 2011-07-27 | セイコーエプソン株式会社 | Droplet discharge head, droplet discharge device, method for manufacturing droplet discharge head, and method for manufacturing droplet discharge device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5995150A (en) | 1984-06-01 |
| FR2534527A1 (en) | 1984-04-20 |
| DE3238608A1 (en) | 1984-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6540322B2 (en) | Ink jet recording apparatus and ink suction method of the recording head | |
| US6811247B2 (en) | Ink jet head and ink jet recording apparatus | |
| US20010012029A1 (en) | Ink jet recording apparatus | |
| US6742883B1 (en) | Ink jet head capable of reliably removing air bubbles from ink | |
| JPS61130054A (en) | Ink jet printer | |
| JPH08216431A (en) | Gasket for cap and ink jet printer using it | |
| JP2005074836A (en) | Inkjet head unit | |
| JPH1024573A (en) | Liquid discharge head, manufacture of liquid discharge head, head cartridge, and liquid discharge device | |
| JPH0259769B2 (en) | ||
| JP2005238857A (en) | Structure at the time of shipping recording head unit and sealing component | |
| US6805438B2 (en) | Ink jet printer | |
| JP2003191480A (en) | Ink-jet recorder | |
| JP3491145B2 (en) | Ink jet recording device | |
| JPS61239948A (en) | Printing head of ink jet printer | |
| JP3603932B2 (en) | Ink jet recording apparatus and method for eliminating air bubbles | |
| US7445320B2 (en) | Ink cartridge for ink-jet printer | |
| JPS58142865A (en) | Ink jet recorder | |
| JP4161553B2 (en) | Inkjet recording device | |
| JP3977479B2 (en) | Structure of the recording head unit when shipped | |
| JP2001179999A (en) | Ink jet recorder | |
| JPH0872259A (en) | Ink jet recording apparatus | |
| EP0949080A2 (en) | Ink container with improved sealing of ink container outlet port | |
| US8177339B2 (en) | Fluid reservoir with compliant wall | |
| JPH09314862A (en) | Recording device | |
| JPH10272782A (en) | Ink jet recording apparatus |