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JPS61189947A - Ink jet head - Google Patents

Ink jet head

Info

Publication number
JPS61189947A
JPS61189947A JP3078585A JP3078585A JPS61189947A JP S61189947 A JPS61189947 A JP S61189947A JP 3078585 A JP3078585 A JP 3078585A JP 3078585 A JP3078585 A JP 3078585A JP S61189947 A JPS61189947 A JP S61189947A
Authority
JP
Japan
Prior art keywords
ink
electromagnet
head
side wall
contact state
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
JP3078585A
Other languages
Japanese (ja)
Inventor
Hidekazu Asada
浅田　秀和
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Priority to JP3078585A priority Critical patent/JPS61189947A/en
Publication of JPS61189947A publication Critical patent/JPS61189947A/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
    • B41J2/015—Ink jet characterised by the jet generation process
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • 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
    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2002/041—Electromagnetic transducer

Landscapes

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

Abstract

PURPOSE:To make it possible to realize the reduction in cost and noise, by constituting the side wall of an ink channel from a magnetic material and arranging an electromagnet in close vicinity to said disc wall in a non-contact state. CONSTITUTION:The head plate 3 forming the side wall of the ink channels 2 formed in a jet head 1 is formed of a magnetic material and an electromagnet M is constituted by winding a coil 5 around an iron core 4 to be arranged in close vicinity to the head plate 3 in a non-contact state. When a current is intermittently supplied to the electromagnet M to repeat excitation and demagnetization, the head plate 3 is bent by the magnetic force of said electromagnet M and ink 6 is injected from each ink passage 2 through a nozzle 7 to perform printing. By this constitution, cost can be reduced as compared with a piezoelectric element and, because magnetic circuit parts are mounted to the jet head in a non-contact state, the noise level at the injection time of ink can be suppressed to a lower degree.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はインクジェットプリンタにおけるオンデマンド
型方式の噴射ヘッドに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an on-demand type ejection head for an inkjet printer.

〔従来の技術〕[Conventional technology]

従来、インクジェットプリンタのオンデマンド型方式の
噴射ヘッド８は第３図に示すように、インク通路９ａを
設けたヘッドプレート９の外壁に圧電素子１０を装着し
、圧電素子１０にょ扱へ゛ラドプレート９を屈撓させる
ことによシ、通路９ａからノズル１１を通してインクを
噴射させ、印字を行っていた。Conventionally, as shown in FIG. 3, in an on-demand type ejection head 8 of an inkjet printer, a piezoelectric element 10 is attached to the outer wall of a head plate 9 provided with an ink passage 9a. By bending the ink, ink is ejected from the passage 9a through the nozzle 11 to perform printing.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

しかしながら、噴射用駆動源として用いられている圧電
素子は高価であり、噴射ヘッドの価格をコストダウンす
るのに障害となっていた。また、圧電素子をプレート９
に装着するため、圧電素子個々のヘッドへの接着組立工
数を必要とし、その分ヘッド価格が高価になシ、しかも
圧電素子をプレート９に直接接合させているため、印字
時に騒音が発生しやすく、印字の低騒音化を図る上で問
題があり、この傾向はマルチノズルになる程大きく、こ
の種の噴射ヘッドのもつ大きな問題点であった。However, the piezoelectric element used as the drive source for ejection is expensive, which has been an obstacle to reducing the price of the ejection head. In addition, the piezoelectric element is placed on plate 9.
In order to attach the piezoelectric element to the plate 9, it requires a lot of work to assemble each piezoelectric element to the head, which increases the price of the head.Furthermore, since the piezoelectric element is directly bonded to the plate 9, noise is likely to be generated during printing. However, there is a problem in achieving low noise printing, and this tendency becomes more pronounced as the number of multi-nozzles increases, and is a major problem with this type of jet head.

本発明は前記問題点を解消するもので、低価格、低騒音
化を実現できる噴射ヘッドを提供するものである。The present invention solves the above-mentioned problems and provides an ejection head that can realize low cost and low noise.

〔問題点を解決するための手段〕[Means for solving problems]

本発明はインク通路の側壁を屈撓させて、通路内からノ
ズルを通してインクを噴射させる噴射へラドにおいて、
前記インク通路の側壁を磁性体にて構成し、かつ該側壁
に近接させて無接触で電磁石を設置したことを特徴とす
るインクジェット噴射ヘッドである。The present invention includes an ejection mode in which the side wall of the ink passage is bent and ink is ejected from within the passage through the nozzle.
The inkjet ejecting head is characterized in that the side wall of the ink passage is made of a magnetic material, and an electromagnet is installed close to the side wall without contact.

〔実施例〕〔Example〕

以下に、本発明の一実施例を図によって説明する。 An embodiment of the present invention will be described below with reference to the drawings.

第１図、第２図において、噴射ヘッド１内に形成された
インク通路２の側壁をなすヘッドグレート３を磁性体に
て構成し、一方鉄心４にコイル５を巻き付けて電磁石Ｍ
を構成し、該電磁石Ｍをヘッドプレート３に近接させて
無接触で設置する。In FIGS. 1 and 2, a head grate 3 forming a side wall of an ink passage 2 formed in an ejection head 1 is made of a magnetic material, and a coil 5 is wound around an iron core 4 to form an electromagnet M.
The electromagnet M is installed close to the head plate 3 without contact.

また、７はインク通路２に連通したインク６の噴射用ノ
ズルである。Further, 7 is a nozzle for ejecting ink 6 that communicates with the ink passage 2 .

実施例において、インクの噴射に際しては、電磁石Ｍに
電流を断続させて供給して励磁と消磁とを繰り返すと、
その磁力によりヘッドプレート３が屈撓し、そのプレー
ト３の屈撓に付随してインク通路２からノズル７全通し
てインク６が噴射し、そのインク６により印字が行なわ
れる。。In the embodiment, when ink is ejected, if a current is supplied intermittently to the electromagnet M and excitation and demagnetization are repeated,
The head plate 3 is bent by the magnetic force, and as the plate 3 is bent, ink 6 is ejected from the ink passage 2 through the entire nozzle 7, and printing is performed using the ink 6. .

〔発明の効果〕〔Effect of the invention〕

以上説明した様に本発明はインクジェットプリンタの噴
射ヘッド駆動に磁気回路を用いるため、圧電素子に比べ
て価格をローコストにすることができ、しかも磁気回路
部品が噴射ヘッドに無接触で取付けられるため、インク
噴射時の騒音レベルを低く抑えることができ、低騒音化
を実現できる効果を有するものである。As explained above, since the present invention uses a magnetic circuit to drive the ejection head of an inkjet printer, the price can be lower than that of a piezoelectric element, and since the magnetic circuit components can be attached to the ejection head without contact, This has the effect of suppressing the noise level during ink ejection to a low level and realizing noise reduction.

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

第１図は本発明の一実施例を示す斜視図、第２図は第１
図のＡ−Ａ線断面図、第３図は従来装置を示す斜視歯で
ある。 １・・・噴射ヘッド、２・・・インク通路、３・・・ヘ
ッドプレート、４・・・鉄心、５・・・コイル、６・・
・インク、７・・・ノズルFIG. 1 is a perspective view showing one embodiment of the present invention, and FIG. 2 is a perspective view showing one embodiment of the present invention.
The cross-sectional view taken along the line A--A in the figure and FIG. 3 are perspective views of teeth showing a conventional device. DESCRIPTION OF SYMBOLS 1... Ejection head, 2... Ink passage, 3... Head plate, 4... Iron core, 5... Coil, 6...
・Ink, 7... nozzle

Claims (1)

【特許請求の範囲】[Claims] （１）インク通路の側壁を屈撓させて、通路内からノズ
ルを通してインクを噴射させるインクジェットプリンタ
のオンデマンド型噴射ヘッドにおいて、前記インク通路
の側壁を磁性体にて構成し、かつ該側壁に近接させて無
接触で電磁石を設置したことを特徴とするインクジェッ
ト噴射ヘッド。(1) In an on-demand ejection head of an inkjet printer that bends the side wall of an ink passage and ejects ink from inside the passage through a nozzle, the side wall of the ink passage is made of a magnetic material and is close to the side wall. An inkjet ejection head characterized in that an electromagnet is installed without contact.
JP3078585A 1985-02-19 1985-02-19 Ink jet head Pending JPS61189947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3078585A JPS61189947A (en) 1985-02-19 1985-02-19 Ink jet head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3078585A JPS61189947A (en) 1985-02-19 1985-02-19 Ink jet head

Publications (1)

Publication Number Publication Date
JPS61189947A true JPS61189947A (en) 1986-08-23

Family

ID=12313321

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3078585A Pending JPS61189947A (en) 1985-02-19 1985-02-19 Ink jet head

Country Status (1)

Country Link
JP (1) JPS61189947A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003070467A3 (en) * 2002-02-20 2003-12-04 Xaar Technology Ltd Fluid pumping and droplet deposition apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003070467A3 (en) * 2002-02-20 2003-12-04 Xaar Technology Ltd Fluid pumping and droplet deposition apparatus

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