JPS59204571A - Multi-nozzle type charge control ink jet head - Google Patents
Multi-nozzle type charge control ink jet headInfo
- Publication number
- JPS59204571A JPS59204571A JP7976083A JP7976083A JPS59204571A JP S59204571 A JPS59204571 A JP S59204571A JP 7976083 A JP7976083 A JP 7976083A JP 7976083 A JP7976083 A JP 7976083A JP S59204571 A JPS59204571 A JP S59204571A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- liquid chamber
- charging electrode
- ink
- charging
- 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
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 230000000644 propagated effect Effects 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000007789 sealing 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
- B41J2/015—Ink jet characterised by the jet generation process
- B41J2/02—Ink jet characterised by the jet generation process generating a continuous ink jet
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Description
【発明の詳細な説明】
１直次■
本発明は、インクジェットプリンター、コピア等におい
て使用されるマルチノズル型荷電制御インクジェットヘ
ッドに関する。DETAILED DESCRIPTION OF THE INVENTION [1] The present invention relates to a multi-nozzle charge control inkjet head used in inkjet printers, copiers, etc.
【釆韮遺
多数個のインクジェットノズルを有する所謂マルチノズ
ル型インクジェットプリンターは既に周知であり、また
、荷電制御型のマルチノズルインクジェットプリンター
も既に周知である。而して、従来の荷電制御型インクジ
ェットプリンターにおいて、インクジェットヘッドは、
振動部、液室部、ノズル部等より構成され、荷電制御電
極はヘッドと分離されて構成されている。そのため、従
来装置においては、ノズルが目づまりした際、清節を行
なってノズルから一時的にゴミがとれても、液室部から
完全に除去されるのではなく、液室部に浮遊している状
態であり、そのため、再びノズルの目づまりが発生する
可能性があった。さらに従来装置においては、ノズルか
ら噴射されたインク柱に荷電するための電極部がヘッド
とは別部材を介してノズル先端に設置されているためノ
ズル穴と電極穴の距離や、同軸度がづれてセットされ、
荷電効率が悪いという欠点があった。[So-called multi-nozzle inkjet printers having a large number of inkjet nozzles are already well known, and charge-controlled multi-nozzle inkjet printers are also already well known. Therefore, in conventional charge-controlled inkjet printers, the inkjet head is
It is composed of a vibrating part, a liquid chamber part, a nozzle part, etc., and the charge control electrode is separated from the head. Therefore, in conventional devices, when the nozzle becomes clogged, even if dirt is temporarily removed from the nozzle by cleaning, it is not completely removed from the liquid chamber, but instead remains suspended in the liquid chamber. Therefore, there was a possibility that the nozzle would become clogged again. Furthermore, in conventional devices, the electrode part for charging the ink column ejected from the nozzle is installed at the tip of the nozzle through a separate member from the head, which may cause the distance between the nozzle hole and the electrode hole or the coaxiality to be misaligned. set,
The drawback was that the charging efficiency was poor.
目 的
本発明は、−Ｆ述のごとき従来技術の欠点を解決するた
めになされたもので、特に、ノズル部を液室部から簡弔
に着脱できるようにすること、及び、荷電電極部とノズ
ル部を液室部と一体化して位置精度の向上及び荷電効率
のバラツキをなくすことを目的としてなされたものであ
る。Purpose The present invention was made in order to solve the drawbacks of the prior art as described in -F. In particular, it is possible to easily attach and detach a nozzle part from a liquid chamber part, and to make it possible to easily attach and detach a nozzle part from a charging electrode part. This was done with the aim of improving positional accuracy and eliminating variations in charging efficiency by integrating the nozzle part with the liquid chamber part.
楓−一一戒
本発明の構成について、以下、一実施例に基づいて説明
する。The configuration of the present invention will be described below based on one embodiment.
第１図は、本発明の一実施例を説明するための分解斜視
図、第２図は、側断面図で、図中、１は振動板、２は液
室部、３はノズル部、４は荷電電極部、５はインク流入
口、６は位置出しピン、７は電極コネクタ、８は振動子
、９はインク柱、ｌＯはインク滴、１１はシール部材で
、周知のように、図示しないインク加圧装置によって加
圧されたインクがインク流入口５より液室部２に供給さ
れ、振動子８に規則正しく印加される正弦波により振動
板ｌと共に振動される。この振動は液室内のインクを伝
播しノズル部に圧力波として伝播され、この圧力波によ
ってインク柱９は一定長さでインク滴１０に切断され、
このインク滴１０が荷電電極部４によって荷電される。FIG. 1 is an exploded perspective view for explaining one embodiment of the present invention, and FIG. 2 is a side sectional view, in which 1 is a diaphragm, 2 is a liquid chamber, 3 is a nozzle, and 4 1 is a charging electrode portion, 5 is an ink inlet, 6 is a positioning pin, 7 is an electrode connector, 8 is a vibrator, 9 is an ink column, IO is an ink droplet, and 11 is a sealing member, which is not shown as is well known. Ink pressurized by the ink pressurizing device is supplied to the liquid chamber 2 from the ink inlet 5, and is vibrated together with the diaphragm 1 by a sine wave regularly applied to the vibrator 8. This vibration propagates through the ink in the liquid chamber and is propagated to the nozzle part as a pressure wave, and the ink column 9 is cut into ink droplets 10 with a certain length by this pressure wave.
This ink droplet 10 is charged by the charging electrode section 4.
この時ノズル部３と荷電電極部４の関係はＸ、Ｙ方向が
、全てのノズルに対し同じ同軸度にないと荷電効率が変
化し、荷電後、偏向電極を通る時に、一様な偏向が行な
われない。また、これらノズル部３と荷電電極部４の距
離、即ち図２に示すしの長さが全てのノズルに渡って一
様でないとこれも一様な偏向量が得られない。而して、
これらの位置精度を出す為にノズル部及び荷電電極を光
学的なエツチングなどを利用して作ることも可能である
が、組立て状態で位置が出ないのが現状である。この点
に関し、本発明においては、液室部２に位置出しピン６
を設け、この位置出しピン６を基準にノズル部３と荷電
電極部４を一体的に組合わせ、ビス１２により結合する
ようにしているので、組立精度を向−１ニさせることが
できる。また、ノズル部３をノズルプレート部３ａとス
ペース部３ｂに分割して考えた場合、スペース部の長さ
しを０．１ｍｍ位の機械加工精度で仕上げることができ
る。At this time, the relationship between the nozzle part 3 and the charging electrode part 4 is that if the X and Y directions are not coaxial to all nozzles, the charging efficiency will change, and after charging, when passing through the deflection electrode, uniform deflection will not occur. Not done. Further, unless the distance between the nozzle section 3 and the charging electrode section 4, that is, the length of the blade shown in FIG. 2 is uniform over all the nozzles, a uniform amount of deflection cannot be obtained. Then,
Although it is possible to make the nozzle portion and the charging electrode using optical etching or the like in order to achieve these positional accuracy, the current situation is that the position cannot be determined in the assembled state. Regarding this point, in the present invention, a positioning pin 6 is provided in the liquid chamber 2.
Since the nozzle portion 3 and the charging electrode portion 4 are integrally assembled using the positioning pin 6 as a reference and are connected by the screws 12, the assembly accuracy can be improved. Further, when the nozzle portion 3 is considered to be divided into a nozzle plate portion 3a and a space portion 3b, the length of the space portion can be finished with a machining accuracy of about 0.1 mm.
東−一１
以トの説明から明らかなように、本発明によると、
（イ）ヘッドを振動部、液室部、ノズル部、荷電電極の
４部品で構成したので、目づまり、部品交換などのトラ
ブルに対し、簡単かつ安価に修正可能となる。As is clear from the explanation below, according to the present invention, (a) the head is composed of four parts: a vibrating part, a liquid chamber part, a nozzle part, and a charging electrode, so clogging, parts replacement, etc. Problems can be easily and inexpensively corrected.
（ロ）ノズル部及び荷電電極部を液室部と一体構成にし
たので、位置精度が出、荷電効率が各ノズルに対して均
一となり、印字滴の位置精度が向上する。(b) Since the nozzle section and the charging electrode section are integrated with the liquid chamber section, positional accuracy is achieved, charging efficiency is uniform for each nozzle, and positional accuracy of printed droplets is improved.
等の利点がある。There are advantages such as
第１図は、本発明の一実施例を説明するための分解斜視
図、第２図は、側断面図である。
ｌ・・・振動板、２・・・液室部、３・・・ノズル部、
４・・・荷電電極部、８・・・振動子。
第１図
第２図FIG. 1 is an exploded perspective view for explaining one embodiment of the present invention, and FIG. 2 is a side sectional view. l... Vibration plate, 2... Liquid chamber part, 3... Nozzle part,
4... Charged electrode part, 8... Vibrator. Figure 1 Figure 2
Claims (1)
、これらが一体重に結合されているこｋを特徴とするマ
ルチノズル型荷電制御インクジェットヘッド。A multi-nozzle charge control inkjet head comprising a vibrating part, a liquid chamber part, a nozzle part, and a charging electrode part, which are connected into one body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7976083A JPS59204571A (en) | 1983-05-07 | 1983-05-07 | Multi-nozzle type charge control ink jet head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7976083A JPS59204571A (en) | 1983-05-07 | 1983-05-07 | Multi-nozzle type charge control ink jet head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59204571A true JPS59204571A (en) | 1984-11-19 |
Family
ID=13699172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7976083A Pending JPS59204571A (en) | 1983-05-07 | 1983-05-07 | Multi-nozzle type charge control ink jet head |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59204571A (en) |
-
1983
- 1983-05-07 JP JP7976083A patent/JPS59204571A/en active Pending
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