JPS61173946A - Ink jet printer - Google Patents

Ink jet printer

Info

Publication number
JPS61173946A
JPS61173946A JP1497785A JP1497785A JPS61173946A JP S61173946 A JPS61173946 A JP S61173946A JP 1497785 A JP1497785 A JP 1497785A JP 1497785 A JP1497785 A JP 1497785A JP S61173946 A JPS61173946 A JP S61173946A
Authority
JP
Japan
Prior art keywords
ink
compressed air
opening
closing valve
injecting
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
JP1497785A
Other languages
Japanese (ja)
Inventor
Michio Matsumoto
松本　三智夫
Seiichi Yoshii
吉井　誠一
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 Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP1497785A priority Critical patent/JPS61173946A/en
Publication of JPS61173946A publication Critical patent/JPS61173946A/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
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor

Abstract

PURPOSE:To enhance reliability by certainly injecting ink, by sealing compressed air for injecting ink in a pressure container and controlling the injection of the ink by an opening and closing valve. CONSTITUTION:Ink 21 and compressed air are sealed in a pressure container 20. The ink 21 is received to a lower part while compressed air fills an upper part by the difference of specific gravity. When an opening and closing valve 23 is opened and closed on the basis of a signal pulse by an actuator such as an electromagnet, the ink 21 is injected from a nozzle 24 as ink particles. Injection energy is given by compressed air 22. Because an ink injecting energy source and the opening and closing valve are made independent as mentioned above, ink can be certainly injected and high reliability is obtained.

Description

【発明の詳細な説明】 産業上の利用分野 コンピュータ、ワードプロセッサの周辺機器等に用いら
れるプリンタに関する。更に詳しくはインクジェット方
式を用いたプリンタに係る。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Use The present invention relates to printers used in computers, word processor peripherals, and the like. More specifically, the present invention relates to a printer using an inkjet method.

従来の技術 第２図は従来のインクジェットヘッドの一例を示すもの
である。インク液室１０の外周に設置されたピエゾ素子
１１にパルス状の信号電圧を印加し、インク液室１０の
体積を減少せしめるための圧力波を発生させる。この圧
力波によって噴射口１２からインク液滴１３が噴射され
る。インク液室１０にはインク液１３が収容される。BACKGROUND OF THE INVENTION FIG. 2 shows an example of a conventional inkjet head. A pulsed signal voltage is applied to a piezo element 11 installed around the outer periphery of the ink chamber 10 to generate a pressure wave for reducing the volume of the ink chamber 10 . Ink droplets 13 are ejected from the ejection port 12 by this pressure wave. Ink liquid 13 is accommodated in ink liquid chamber 10 .

発明が解決しようとする問題点 しかしながら、インク液室１０に気泡が混入した時は圧
力波の吸収が生じ噴射力が低下するという問題点がある
。さらに１エゾ素子Ｘｔと液室外周の密着度が悪いと圧
力波が発生しないため、非常に高精度の部品製作技術を
必要とする。Problems to be Solved by the Invention However, there is a problem in that when air bubbles enter the ink chamber 10, pressure waves are absorbed and the jetting force is reduced. Furthermore, if the degree of adhesion between the 1EZ element Xt and the outer periphery of the liquid chamber is poor, pressure waves will not be generated, which requires extremely high-precision component manufacturing technology.

問題点を解決するための手段 本発明は上記欠点を解決せんとするものであり、確実に
インクを噴射させるための圧力容器を備えたことが特徴
である。圧力容器内にはイ／りを噴射させるための圧縮
気体が封入される。インク噴射制御は開閉弁にて行なう
。Means for Solving the Problems The present invention aims to solve the above-mentioned drawbacks, and is characterized in that it includes a pressure vessel for reliably jetting ink. Compressed gas for injecting the gas is sealed in the pressure vessel. Ink jetting control is performed by an on-off valve.

作用 インク噴射のためのエネルギーは容器内にインクと共に
封入された圧縮気体によって与えられるから、開閉弁は
インク噴射のためのエネルギーが不要となる。Since the energy for ejecting the working ink is provided by the compressed gas sealed together with the ink in the container, the on-off valve does not require energy for ejecting the ink.

実施例 第１図は本発明の一実施例を示す。圧力容器２０内にイ
ンク２１と圧縮気体２２が封入される。比重の差を利用
し、インク２１が下方に、圧縮気体２２が上方にできる
。開閉弁２３を作動させることによりインク２１がノズ
ル２４よりインク粒２５となって噴ｑ１される。この噴
射エネルギーは圧縮気体２２で与えられる。開閉弁２３
は例えば電磁石等のア、・クチュエータを用い、信号パ
ルスに応じて開閉が行なわれる。Embodiment FIG. 1 shows an embodiment of the present invention. Ink 21 and compressed gas 22 are sealed in pressure vessel 20 . Utilizing the difference in specific gravity, the ink 21 is formed at the bottom and the compressed gas 22 is formed at the top. By operating the on-off valve 23, the ink 21 is ejected from the nozzle 24 in the form of ink droplets 25 q1. This injection energy is provided by compressed gas 22. Open/close valve 23
For example, an actuator such as an electromagnet is used to open and close in response to a signal pulse.

容器２０はインク２１が無くなれば容器２０が交換され
る。又はインク２１と圧縮気体２２を充填しても良い。The container 20 is replaced when the ink 21 runs out. Alternatively, the ink 21 and compressed gas 22 may be filled.

容器２０、開閉弁２３、ノズル２４の形状は実施例のも
のに限らず、種々の変更が可能である。The shapes of the container 20, the on-off valve 23, and the nozzle 24 are not limited to those in the embodiment, and can be modified in various ways.

発明の効果 本発明によると、インク噴射用エネルギー源と、開閉弁
を独立させているため確実にインクを噴射させることが
でき、非常に信願度の高いインクジェットプリンタを提
供することができる。開閉弁は噴射口を開閉するだけで
よく、非′常に簡単な構造でよく、安価に製作できる。Effects of the Invention According to the present invention, since the energy source for ink ejection and the on-off valve are made independent, ink can be ejected reliably, and an inkjet printer with very high reliability can be provided. The on-off valve only needs to open and close the injection port, has a very simple structure, and can be manufactured at low cost.

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

第１図は本発明の一実施例の断面図、第２図は従来例の
断面図である。 ２２は圧縮気体、２０は容器、２４は噴射ノズル、２１
はインク、２３は開閉弁である。FIG. 1 is a sectional view of one embodiment of the present invention, and FIG. 2 is a sectional view of a conventional example. 22 is a compressed gas, 20 is a container, 24 is an injection nozzle, 21
23 is ink, and 23 is an on-off valve.

Claims (1)

【特許請求の範囲】[Claims] 圧縮気体とインクを内蔵した容器と、該容器に連結され
たノズルパイプを有し、該ノズルパイプの一部分にイン
クの流れを制御するための開閉弁を有することを特徴と
するインクジェットプリンタ。An inkjet printer comprising a container containing compressed gas and ink, a nozzle pipe connected to the container, and a part of the nozzle pipe having an on-off valve for controlling the flow of the ink.
JP1497785A 1985-01-29 1985-01-29 Ink jet printer Pending JPS61173946A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1497785A JPS61173946A (en) 1985-01-29 1985-01-29 Ink jet printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1497785A JPS61173946A (en) 1985-01-29 1985-01-29 Ink jet printer

Publications (1)

Publication Number Publication Date
JPS61173946A true JPS61173946A (en) 1986-08-05

Family

ID=11876035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1497785A Pending JPS61173946A (en) 1985-01-29 1985-01-29 Ink jet printer

Country Status (1)

Country Link
JP (1) JPS61173946A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739651A (en) * 1986-07-28 1988-04-26 Air Sensors, Inc. Throttle body with internally mounted anemometer
US4870857A (en) * 1986-07-28 1989-10-03 Airsensors, Inc. Throttle body with internally mounted anemometer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4739651A (en) * 1986-07-28 1988-04-26 Air Sensors, Inc. Throttle body with internally mounted anemometer
US4870857A (en) * 1986-07-28 1989-10-03 Airsensors, Inc. Throttle body with internally mounted anemometer

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