JPS61118261A - Multi-nozzle head for ink jet printer - Google Patents
Multi-nozzle head for ink jet printerInfo
- Publication number
- JPS61118261A JPS61118261A JP24030584A JP24030584A JPS61118261A JP S61118261 A JPS61118261 A JP S61118261A JP 24030584 A JP24030584 A JP 24030584A JP 24030584 A JP24030584 A JP 24030584A JP S61118261 A JPS61118261 A JP S61118261A
- Authority
- JP
- Japan
- Prior art keywords
- head
- nozzle head
- electrode
- nozzle
- jet printer
- 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
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
- B41J2/14298—Structure of print heads with piezoelectric elements of disc type
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Description
【発明の詳細な説明】
1良た夏
本発明は、オンデマンド型インクジェットプリンタのマ
ルチノズルヘッドに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-nozzle head for an on-demand inkjet printer.
災米致亙
一般に、マルチノズルタイプのインクジェットプリンタ
においては、各ノズル間の噴射特性のばらつきにより印
字時のドツトに大小を生じ、印字品質が低下する等の問
題がある。この噴射特性のばらつきは、振動子によるも
のは、振動子の大きさ、厚さ、材質、積電容量等のばら
つきにより発生し、また全体から見れば、ノズルの大き
さ、液室形状、インク通路、ドライブ回路等のばらつき
によって発生する。そこで、従来のマルチノズルタイプ
のプリンタにおいては、駆動回路に、各ノズルの噴射特
性のばらつき補正用の可変抵抗を挿入し、プリンタ装置
として組立てた時点で、各ノ ″ズルからの噴射特性が
均一になるよう駆動回路側の可変抵抗を調整している(
特開昭56−106869号公報)。In general, multi-nozzle type inkjet printers have problems such as variations in jetting characteristics between the nozzles, which cause dots to vary in size during printing, resulting in deterioration in printing quality. Variations in jetting characteristics are caused by variations in the vibrator's size, thickness, material, cumulative capacitance, etc., and from an overall perspective, they are caused by the nozzle size, liquid chamber shape, ink This occurs due to variations in passages, drive circuits, etc. Therefore, in conventional multi-nozzle type printers, a variable resistor is inserted into the drive circuit to compensate for variations in the jetting characteristics of each nozzle, so that when assembled as a printer device, the jetting characteristics from each nozzle are uniform. The variable resistance on the drive circuit side is adjusted so that (
JP-A No. 56-106869).
第2図は、斯かるマルチノズルタイプのオンデマンドヘ
ッドを示し、駆動装置1によりマルチノズルヘッド2の
各ピエゾ素子3を励振して、ノズル4からインク滴5を
噴射し、印字している。FIG. 2 shows such a multi-nozzle type on-demand head, in which each piezo element 3 of the multi-nozzle head 2 is excited by the driving device 1, and ink droplets 5 are ejected from the nozzle 4 to print.
第3図は、前述した従来の駆動回路の例を示し。FIG. 3 shows an example of the conventional drive circuit mentioned above.
10は駆動用トランシタ、11は抵抗、12は噴射特性
のばらつき補正用の可変抵抗、13はピエゾ素子であり
、可変抵抗12を調整することにより噴射特性を均一化
している。しかしながら、このような従来の噴射特性補
正方式では、ヘッドの故障等でヘッドを交換した場合、
再度噴射特性を見ながら可変抵抗を調整する必要があり
、メンチナンスの作業性が良くなかった。10 is a driving transistor, 11 is a resistor, 12 is a variable resistor for correcting variations in injection characteristics, and 13 is a piezo element. By adjusting the variable resistor 12, the injection characteristics are made uniform. However, with such conventional jetting characteristic correction methods, when the head is replaced due to a head failure, etc.,
It was necessary to adjust the variable resistance while checking the injection characteristics again, and the maintenance workability was not good.
1−一血
本発明は、斯かる事情に鑑みてなされたもので、インク
ジェットプリンタ用マルチノズルヘッドの駆動特性、噴
射特性を均一化し、品質の良い画像を得ると共に、ヘッ
ドユニットに互換性を持たせ、メンテナン性を良くする
ことを目的としてなされたものである。1-1 The present invention has been made in view of the above circumstances, and aims to equalize the driving characteristics and ejection characteristics of a multi-nozzle head for an inkjet printer, obtain high-quality images, and make the head unit compatible. This was done with the aim of improving maintainability.
1ニー−戊
本発明は、前記目的を達成するために、ヘッド励振用ピ
エゾ素子の電極面をトリミングすることにより噴射特性
を均一化したことを特徴としたものである。以下1本発
明を実施例に基づいて説□明する。In order to achieve the above object, the present invention is characterized in that the jetting characteristics are made uniform by trimming the electrode surface of the head excitation piezo element. The present invention will be explained below based on examples.
第1図は5本発明によるマルチノズルヘッドの加圧用ピ
エゾ素子の実施例を示す図である。同図において、20
はピエゾ素子、21は電極部であり、その一部22がト
リミングされている。23は引出し線である。このトリ
ミングは、ヘッドが組立てられた時点で、特性測定装置
によりインクの噴射特性を調べ、各ノズル間及び各ヘッ
ジ間での特性ばらつきが無くなるにうにピエゾ素子20
の蒸着された電極面21をトリミング装置でトリミング
することにより行なう。このトリミングによりピエゾ素
子20のインピーダンスが変化し、同一駆動条件下での
噴射特性を変えることが可能となる。FIG. 1 is a diagram showing an embodiment of a piezo element for pressurizing a multi-nozzle head according to the present invention. In the same figure, 20
2 is a piezo element, and 21 is an electrode portion, a portion 22 of which is trimmed. 23 is a leader line. This trimming is performed by checking the ink ejection characteristics using a characteristic measuring device when the head is assembled, and checking the piezo element 20 to eliminate variations in characteristics between each nozzle and between each hedge.
This is done by trimming the vapor-deposited electrode surface 21 using a trimming device. This trimming changes the impedance of the piezo element 20, making it possible to change the injection characteristics under the same driving conditions.
勿−一一艮
以上のように本発明によれば、ヘッドの組立工程で均一
のマルチノズルヘッドができるので、プリンタ本体の組
立工程においては、無調整で組立でき、サービス時もヘ
ッドの交換のみでよく、サービス性の向上が計れると共
に、ユーザ側での交換も可能となる。また、駆動回路に
ついては、外部に調整用可変抵抗を使用しないので、l
Sl!Sl踏動集積化し、小型化を計る上で有利となる
。As described above, according to the present invention, a uniform multi-nozzle head can be created in the head assembly process, so the printer body can be assembled without adjustment during the assembly process, and only the head can be replaced during service. This can improve serviceability and also allow for replacement on the user side. In addition, as for the drive circuit, since no external adjustment variable resistor is used,
Sl! This is advantageous in terms of integrating Sl pedals and downsizing.
第1図は、本発明によるヘッド加圧用ピエゾ索子を示す
図、第2図は、マルチノズルヘッドの例を示す図、第3
図は、従来のヘッド駆動回路を示す図である。
20・・・ピエゾ素子、21・・・電極部、22・・・
トリミング、23・・・引出し線。
第2図
第3図
第1図1 is a diagram showing a piezo rod for pressurizing a head according to the present invention, FIG. 2 is a diagram showing an example of a multi-nozzle head, and FIG. 3 is a diagram showing an example of a multi-nozzle head.
The figure shows a conventional head drive circuit. 20... Piezo element, 21... Electrode part, 22...
Trimming, 23...Leader line. Figure 2 Figure 3 Figure 1
Claims (1)
により噴射特性を均一化したことを特徴とするインクジ
ェットプリンタ用マルチノズルヘッド。A multi-nozzle head for an inkjet printer, characterized in that jetting characteristics are made uniform by trimming the electrode surface of a piezo element for head excitation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24030584A JPS61118261A (en) | 1984-11-14 | 1984-11-14 | Multi-nozzle head for ink jet printer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24030584A JPS61118261A (en) | 1984-11-14 | 1984-11-14 | Multi-nozzle head for ink jet printer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61118261A true JPS61118261A (en) | 1986-06-05 |
Family
ID=17057477
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24030584A Pending JPS61118261A (en) | 1984-11-14 | 1984-11-14 | Multi-nozzle head for ink jet printer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61118261A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0519708A2 (en) * | 1991-06-17 | 1992-12-23 | Tektronix Inc. | Array jet velocity normalization |
US5389956A (en) * | 1992-08-18 | 1995-02-14 | Xerox Corporation | Techniques for improving droplet uniformity in acoustic ink printing |
EP0972641A2 (en) * | 1998-06-18 | 2000-01-19 | Xerox Corporation | Controlling acoustic ink printing print uniformity by adjusting row electrode area and shape |
JP2006150955A (en) * | 2004-10-28 | 2006-06-15 | Brother Ind Ltd | Manufacturing method for piezoelectric actuator, manufacturing method for liquid transfer device, and manufacturing apparatus for piezoelectric actuator |
JP2006156987A (en) * | 2004-11-01 | 2006-06-15 | Brother Ind Ltd | Piezoelectric actuator, method of manufacturing piezoelectric actuator, liquid transfer apparatus and method of manufacturing liquid transfer apparatus |
EP3642042A4 (en) * | 2017-06-22 | 2021-03-10 | Fujifilm Dimatix, Inc. | A piezoelectric device and method for manufacturing an inkjet head |
-
1984
- 1984-11-14 JP JP24030584A patent/JPS61118261A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0519708A2 (en) * | 1991-06-17 | 1992-12-23 | Tektronix Inc. | Array jet velocity normalization |
US5389956A (en) * | 1992-08-18 | 1995-02-14 | Xerox Corporation | Techniques for improving droplet uniformity in acoustic ink printing |
EP0972641A2 (en) * | 1998-06-18 | 2000-01-19 | Xerox Corporation | Controlling acoustic ink printing print uniformity by adjusting row electrode area and shape |
EP0972641A3 (en) * | 1998-06-18 | 2000-02-09 | Xerox Corporation | Controlling acoustic ink printing print uniformity by adjusting row electrode area and shape |
US6217151B1 (en) | 1998-06-18 | 2001-04-17 | Xerox Corporation | Controlling AIP print uniformity by adjusting row electrode area and shape |
JP2006150955A (en) * | 2004-10-28 | 2006-06-15 | Brother Ind Ltd | Manufacturing method for piezoelectric actuator, manufacturing method for liquid transfer device, and manufacturing apparatus for piezoelectric actuator |
JP2006156987A (en) * | 2004-11-01 | 2006-06-15 | Brother Ind Ltd | Piezoelectric actuator, method of manufacturing piezoelectric actuator, liquid transfer apparatus and method of manufacturing liquid transfer apparatus |
EP3642042A4 (en) * | 2017-06-22 | 2021-03-10 | Fujifilm Dimatix, Inc. | A piezoelectric device and method for manufacturing an inkjet head |
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