JPS6219465A - Electrostrictive vibrator electrode for ink jet head - Google Patents

Electrostrictive vibrator electrode for ink jet head

Info

Publication number
JPS6219465A
JPS6219465A JP15942185A JP15942185A JPS6219465A JP S6219465 A JPS6219465 A JP S6219465A JP 15942185 A JP15942185 A JP 15942185A JP 15942185 A JP15942185 A JP 15942185A JP S6219465 A JPS6219465 A JP S6219465A
Authority
JP
Japan
Prior art keywords
electrode
electrostrictive vibrator
nozzle
jetting
effective area
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
JP15942185A
Other languages
Japanese (ja)
Inventor
Takuo Isayama
伊佐山　拓郎
Kyuhachiro Iwasaki
岩崎　久八郎
Minoru Ameyama
飴山　実
Hiroshi Yamazaki
博史 山崎
Shuzo Matsumoto
松本　修三
Yasuo Katano
泰男 片野
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 JP15942185A priority Critical patent/JPS6219465A/en
Publication of JPS6219465A publication Critical patent/JPS6219465A/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
    • B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm

Landscapes

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

Abstract

PURPOSE:To compensate for scattering of jetting characteristics among nozzles and eliminate the need to individually control driving pulse waveforms, pulse voltage or the like, by dividing an electrode for an electrostrictive vibrator in an ink jet head into a main electrode and at least one auxiliary electrode, and selectively connecting the auxiliary electrodes. CONSTITUTION:The electrode 6 for the electrostrictive vibrator is divided into the main electrode 21 and the auxiliary electrodes 22, 23, and the auxiliary electrodes 22, 23 are used or unused in addition to the main electrode 21, whereby the effective area of the electrode 6 is regulated. The scattering of characteristics among nozzles is compensated for by regulating the effective area of the electrode 6. The quantity of strain generated in the electrode 6 is varied with the effective area, under the same applied voltage. Therefore, when the effective area of the electrode 6 is varied according to the jetting characteristic of the nozzle, for example, the magnitude of the jetting velocity of droplets, the scattering of the jetting characteristics (jetting velocity of droplets) among the nozzles can be uniformized to within the allowable scattering.

Description

【発明の詳細な説明】 致宜分更 本発明は、インクジェットヘッドの電歪振動子電極、よ
り詳細には、インク滴を粒子化し、画像。DETAILED DESCRIPTION OF THE INVENTION The present invention, as appropriate, relates to an electrostrictive vibrator electrode of an inkjet head, and more specifically, to forming an image by turning ink droplets into particles.

文字信号に対応して記録紙上に滴形成し、画像。Droplets are formed on the recording paper in response to character signals to create an image.

文字を再現するインクジェットヘッドにおいて、電歪振
動子電極の構造を改良してノズル間の特性バラツキ及び
ヘッド間の特性バラツキを補償するようにしたものであ
る。In an inkjet head that reproduces characters, the structure of the electrostrictive vibrator electrode is improved to compensate for variations in characteristics between nozzles and between heads.

従ｎｕ 第８図は、従来のインクオンデマンド型インクジェット
ヘッドの一例を示す側断面図、第９図は、従来のマルチ
ノズルインクオンデマンド型インクジェットの一例を示
す平面図、第１０図は、従来のインクジェットヘッドの
電歪振動子の電極を示す図で、図中、１はノズル孔、２
はノズル側流路、３はヘッド基板、４はヘッド上板、５
はインク加圧液室、６は電歪振動子（振動子ユニット）
、７はインク供給側流路、８はインク供給パイプ、１０
は共通液室、１１はインク供給孔、１２．１３は給電リ
ード線で、周知のように、インクオンデマンド型インク
ジェットヘッドは、文字２画像信号に応じて電歪振動子
６を歪ませてインク加圧液室５の体積を急激に減少させ
、それによって、ノズル孔１よりインク滴を噴射させて
記録を行なうものである。しかしながら、第９図に示し
たようにマルチ化した場合、加工上のバラツキ、電歪振
動子の特性のバラツキ等により、各ノズル間の噴射特性
が異なり、著しく画質を劣化せしめていた。Fig. 8 is a side sectional view showing an example of a conventional ink-on-demand type inkjet head, Fig. 9 is a plan view showing an example of a conventional multi-nozzle ink-on-demand type inkjet head, and Fig. 10 is a conventional ink-on-demand type inkjet head. This is a diagram showing the electrodes of an electrostrictive vibrator of an inkjet head, in which 1 is a nozzle hole, 2 is a
is the nozzle side flow path, 3 is the head substrate, 4 is the head upper plate, 5
is the ink pressurized liquid chamber, 6 is the electrostrictive vibrator (vibrator unit)
, 7 is an ink supply side flow path, 8 is an ink supply pipe, 10
1 is a common liquid chamber, 11 is an ink supply hole, and 12 and 13 are power supply lead wires.As is well known, an ink-on-demand type inkjet head distorts the electrostrictive vibrator 6 according to the character 2 image signal to supply ink. Recording is performed by rapidly reducing the volume of the pressurized liquid chamber 5, thereby ejecting ink droplets from the nozzle hole 1. However, when multiplicity is used as shown in FIG. 9, the jetting characteristics between the nozzles differ due to variations in processing, variations in the characteristics of the electrostrictive vibrator, etc., resulting in a significant deterioration of image quality.

そこで、このバラツキを補償するために、従来。Therefore, in order to compensate for this variation, conventional methods were used.

例えば、電歪振動子を駆動する振動パルス波形を逐一調
整して各ノズル間の噴射特性（例えば、インク滴飛翔速
度）をそろえるようにすることが提案されている（特開
昭５６−１０６８６９）。For example, it has been proposed to adjust the vibration pulse waveform that drives the electrostrictive vibrator one by one to make the ejection characteristics (e.g., ink droplet flying speed) uniform between each nozzle (Japanese Patent Application Laid-Open No. 106869/1983). .

しかしながら、ヘッドを記録装置に装着する時に逐一調
整することは手間がかかり、特に、ヘッド交換を必要と
する場合、逐一、そのヘッドのバラツキ度合に合せて再
調整しなければならず著しく不都合であった。However, it is time-consuming to make adjustments every time a head is attached to a recording device, and in particular, when the head needs to be replaced, readjustment must be made every time according to the degree of variation in the head, which is extremely inconvenient. Ta.

月−一一皓 本発明は、上述のごとき実情に鑑みてなされたもので、
特に、マルチノズルインクジェットヘッドにおいて問題
となるヘッド内のノズル間の特性バラツキ及び各ヘッド
間の特性バラツキを補償することを目的としてなされた
ものである。The present invention was made in view of the above-mentioned circumstances.
In particular, this is intended to compensate for variations in characteristics between nozzles within a head and variations in characteristics between each head, which are problems in multi-nozzle inkjet heads.

盪−一双 本発明は、上記目的を達成するために、インク滴を粒子
化し、文字１画像信号と対応して記録紙上に滴形成して
文字２画像を印写するようになしたマルチノズルインク
ジェットヘッドにおいて、各ノズルの滴粒子用の電歪振
動子電極を少なくとも二つ以上のパターンにて分割形成
したことを特徴としたものである。以下、本発明の実施
例に基づいてなされたものである。(2) In order to achieve the above object, the present invention provides a multi-nozzle inkjet that prints two images of characters by forming ink droplets into particles and forming droplets on recording paper in correspondence with a character one image signal. The head is characterized in that the electrostrictive vibrator electrodes for droplet particles of each nozzle are divided into at least two patterns. The following is an example of the present invention.

第１図乃至第７図は、それぞれ本発明による電歪振動子
の電極パターンを示したもので、全回を通して、６は電
歪振動子電極、１２は給電リード線、２１は主電極、２
２．２３は補助電極、２４は電極パターン溝、２５．．
２５２は接続片で、全図とも、電歪振動子電極６を主電
極２１と補助電極２２及び２３に分割し、主電極２１に
補助電極２２．２３を付加し又は付加しないことにより
電歪振動子電極６の実効面積を変えるようにしたもので
ある。すなわち、第１図、第４図、及び第６図に示した
実施例は主電極２１と補助電極２２及び２３の面積を電
歪振動子電極の実効面積して、第２図に示した実施例は
主電極２１と補助電極２３の面積を実効面積とし、第３
図、第５図、及び、第７図に示した実施例は主電極２１
のみの面積を実効面積しするものであるが、電歪振動子
電極６の形状は図示例のものに限定されるものではなく
、また、補助電極の数も２つに限定されるものではなく
、更には、補助電極の大きさも必要に応じて任意所望の
大きさに形成してよいことは容易に理解できよう。1 to 7 respectively show the electrode patterns of the electrostrictive vibrator according to the present invention. Throughout the series, 6 is the electrostrictive vibrator electrode, 12 is the power supply lead wire, 21 is the main electrode, and 2 is the electrostrictive vibrator electrode.
2.23 is an auxiliary electrode, 24 is an electrode pattern groove, 25. ．．
252 is a connection piece, and in all figures, the electrostrictive vibrator electrode 6 is divided into the main electrode 21 and auxiliary electrodes 22 and 23, and the auxiliary electrodes 22 and 23 are added or not added to the main electrode 21 to generate electrostrictive vibration. The effective area of the child electrode 6 is changed. That is, in the embodiments shown in FIGS. 1, 4, and 6, the area of the main electrode 21 and the auxiliary electrodes 22 and 23 is taken as the effective area of the electrostrictive vibrator electrode, and the embodiment shown in FIG. In the example, the effective area is the area of the main electrode 21 and the auxiliary electrode 23, and the third
In the embodiments shown in FIGS. 5 and 7, the main electrode 21
However, the shape of the electrostrictive vibrator electrode 6 is not limited to the illustrated example, and the number of auxiliary electrodes is not limited to two. Furthermore, it will be easily understood that the size of the auxiliary electrode may be formed to any desired size as necessary.

上述のように、マルチノズルインクジェットヘッドにお
いては、ヘッド内のノズル間の特性のバラツキ、各ヘッ
ド間の特性のバラツキ等によって各ノズル間のインク噴
射特性が異なり、それによって画質を劣化させていたが
１本発明は、この各ノズル間のバラツキを前述のように
して電歪振動子電極６の電極実効面積を変えることによ
って補償するようにしたものである。As mentioned above, in multi-nozzle inkjet heads, the ink ejection characteristics between each nozzle differ due to variations in the characteristics between the nozzles within the head, variations in the characteristics between each head, etc., which deteriorates the image quality. 1. In the present invention, this variation between the nozzles is compensated for by changing the effective electrode area of the electrostrictive vibrator electrode 6 as described above.

周知のように、同一印加電圧下では、電歪振動子電極６
はその実効面積により歪量が異なるので、前記ノズルの
噴射特性１例えば滴噴射速度の高低に従って、図示のよ
うに、作用する電極実効面積を変えてやれば、各ノズル
間の噴射特性（滴噴射速度）を許容バラツキ内にそろえ
ることができる。As is well known, under the same applied voltage, the electrostrictive vibrator electrode 6
Since the amount of strain differs depending on the effective area of the nozzle, the jetting characteristics between each nozzle (droplet jetting speed) can be kept within the allowable variation.

なお、接続片２５．．２５２はクリームハンダ、銀ペー
ストなどで形成すれば良く、通常の装置により容易に行
なうことができる。Note that the connection piece 25. ．． 252 may be formed of cream solder, silver paste, etc., and can be easily formed using a conventional device.

また、各ノズルの滴速度測定は、ストロボ発光装置、工
業用テレビ、撮影カメラ、顕微鏡などにより装置構成し
て容易に行なうことができる。なお、本発明では、主要
電極２１に所定の駆動電圧を印加した場合、所定の歪量
よりやや小さくなるように設定しである。すなわち、補
助電極２２゜２３を滴速度の高低に応じて選択し、主要
電極２１に電気的に接続して電歪振動子６の電極実効面
積を増大させる方向で、各ノズル間の噴射特性のバラツ
キを補償するようにしている。Furthermore, measurement of the droplet velocity of each nozzle can be easily carried out by configuring the apparatus using a strobe light emitting device, an industrial television, a photographing camera, a microscope, etc. In the present invention, when a predetermined drive voltage is applied to the main electrode 21, the distortion amount is set to be slightly smaller than a predetermined amount. That is, the ejection characteristics between each nozzle are adjusted by selecting the auxiliary electrodes 22 and 23 according to the droplet velocity and electrically connecting them to the main electrode 21 to increase the effective electrode area of the electrostrictive vibrator 6. We try to compensate for variations.

なお、以上には、本発明をインクオンデマンド型インク
ジェットヘッドに適用した場合について説明したが、荷
電制御型等の他のインクジェットヘッドについても適用
できることはいうまでもない。Although the present invention has been described above in the case where it is applied to an ink-on-demand type inkjet head, it goes without saying that it can also be applied to other inkjet heads such as a charge control type.

効−−二釆 以上の説明から明らかなように、本発明によると、イン
クジェットヘッドの電歪振動子の電極を主電極と一つ以
上の補助電極とに分割し、各ノズル毎の噴射特性に応じ
て作用電極実効面積を変えるべく、補助電極を選択接続
するようにしたので、各ノズル間の噴射特性バラツキを
補償することができ、記録装置に装着する際、従来技術
のように、駆動パルス波形、パルス電圧等を逐一調整す
る必要はない。Effects--As is clear from the above explanation, according to the present invention, the electrode of the electrostrictive vibrator of the inkjet head is divided into a main electrode and one or more auxiliary electrodes, and the jetting characteristics of each nozzle are adjusted. Since the auxiliary electrode is selectively connected in order to change the effective area of the working electrode accordingly, it is possible to compensate for variations in jetting characteristics between each nozzle. There is no need to adjust the waveform, pulse voltage, etc. one by one.

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

第１図乃至第７図は、それぞれ本発明による電歪振動子
の電極パターンの例を示す図、第８図は。 インクオンデマンドインクジェットの一例を示す側断面
図、第９図は、マルチノズルインクオンデマンドインク
ジエツ１−ヘッドの一例を示す平面図。 第１０図は、従来の電歪振動子の電極を示す図である。 ６・・・電歪振動子、１２・・・給電リード線、２１・
・・主電極、２２．２３・・・補助電極、２４・・・電
極パターン溝、２５１　ｔ　２５２・・・接続片。 特許出願人　　株式会社　リコー 第１図　第２図　第３５１ 第４図　　第５図 第６図　　　第７図 第８図 第９図 第１０図1 to 7 are diagrams showing examples of electrode patterns of an electrostrictive vibrator according to the present invention, respectively, and FIG. 8 is a diagram showing examples of electrode patterns of an electrostrictive vibrator according to the present invention. FIG. 9 is a side sectional view showing an example of an ink-on-demand inkjet, and FIG. 9 is a plan view showing an example of a multi-nozzle ink-on-demand inkjet 1-head. FIG. 10 is a diagram showing electrodes of a conventional electrostrictive vibrator. 6... Electrostrictive vibrator, 12... Power supply lead wire, 21...
...Main electrode, 22.23...Auxiliary electrode, 24...Electrode pattern groove, 251 t 252...Connection piece. Patent applicant Ricoh Co., Ltd. Figure 1 Figure 2 Figure 351 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10

Claims (3)

【特許請求の範囲】[Claims] （１）、インク滴を粒子化し、文字、画像信号と対応し
て記録紙上に滴形成して文字、画像を印写するようにな
したマルチノズルインクジェットヘッドにおいて、各ノ
ズルの滴粒子用の電歪振動子電極を少なくとも二つ以上
のパターンに分割形成したことを特徴とするマルチノズ
ルインクジェットヘッドの電歪振動子電極。(1) In a multi-nozzle inkjet head that prints characters and images by converting ink droplets into particles and forming droplets on recording paper in correspondence with characters and image signals, the electric current for droplets in each nozzle is An electrostrictive vibrator electrode for a multi-nozzle inkjet head, characterized in that the strain vibrator electrode is divided into at least two or more patterns. （２）、前記分割形成された電極パターンを相互に電気
的に接続片にて接続したことを特徴とする特許請求の範
囲第（１）項に記載のマルチノズルインクジェットヘッ
ドの電歪振動子電極。(2) The electrostrictive vibrator electrode of a multi-nozzle inkjet head according to claim (1), wherein the divided electrode patterns are electrically connected to each other by a connecting piece. . （３）、前記分割形成された電極パターンのうち一つを
主電極、他を補助電極とし、必要に応じて補助電極を主
電極に電気的に接続するようになしたことを特徴とする
特許請求の範囲第（１）項又は第（２）項に記載のマル
チノズルインクジェットの電歪振動子電極。(3) A patent characterized in that one of the divided electrode patterns is used as a main electrode and the other is used as an auxiliary electrode, and the auxiliary electrode is electrically connected to the main electrode as necessary. An electrostrictive vibrator electrode for a multi-nozzle inkjet according to claim (1) or (2).
JP15942185A 1985-07-19 1985-07-19 Electrostrictive vibrator electrode for ink jet head Pending JPS6219465A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15942185A JPS6219465A (en) 1985-07-19 1985-07-19 Electrostrictive vibrator electrode for ink jet head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15942185A JPS6219465A (en) 1985-07-19 1985-07-19 Electrostrictive vibrator electrode for ink jet head

Publications (1)

Publication Number Publication Date
JPS6219465A true JPS6219465A (en) 1987-01-28

Family

ID=15693376

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15942185A Pending JPS6219465A (en) 1985-07-19 1985-07-19 Electrostrictive vibrator electrode for ink jet head

Country Status (1)

Country Link
JP (1) JPS6219465A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03213345A (en) * 1990-01-19 1991-09-18 Canon Inc Liquid injection recording method
EP0835756A2 (en) * 1996-09-25 1998-04-15 Seiko Epson Corporation Actuator for ink jet printer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03213345A (en) * 1990-01-19 1991-09-18 Canon Inc Liquid injection recording method
EP0835756A2 (en) * 1996-09-25 1998-04-15 Seiko Epson Corporation Actuator for ink jet printer
EP0835756A3 (en) * 1996-09-25 1999-01-13 Seiko Epson Corporation Actuator for ink jet printer
US6070971A (en) * 1996-09-25 2000-06-06 Seiko Epson Corporation Actuator for ink jet printer

Similar Documents

Publication Publication Date Title
US4293865A (en) Ink-jet recording apparatus
US4350989A (en) Ink-jet printing apparatus
JP2842320B2 (en) Droplet ejection device and droplet ejection method
US7651203B2 (en) Inkjet recording device, ejecting device provided therein, and method of calibrating ejection characteristic for droplet
JP2746633B2 (en) Liquid jet recording device
JPS6336953B2 (en)
US8608267B2 (en) Ink jetting
JPH09300636A (en) Adjustment of ink jet head
US6837574B2 (en) Line scan type ink jet recording device
JPS6219465A (en) Electrostrictive vibrator electrode for ink jet head
JPS63218363A (en) Ink jet recorder
JPS5849189B2 (en) Recording head for inkjet
JP3555650B2 (en) Ink jet recording device
JPS6325944B2 (en)
JPH05338165A (en) Method for driving liquid jet recording head
JPS6055312B2 (en) Multi-nozzle inkjet printer
JP3193126B2 (en) Drive unit for inkjet head
JPS6046257A (en) Inkjet recorder
JP7122051B1 (en) How to drive the print head
JPH034389B2 (en)
JPH0323349B2 (en)
JPS5942965A (en) Ink jet printer
JP2003305843A (en) Inkjet recorder
JPS6216823B2 (en)
JPS59190861A (en) Ink jet head and ink jet tonal recording