JPS62111754A - Electric field curtain printer - Google Patents

Electric field curtain printer

Info

Publication number
JPS62111754A
JPS62111754A JP25168885A JP25168885A JPS62111754A JP S62111754 A JPS62111754 A JP S62111754A JP 25168885 A JP25168885 A JP 25168885A JP 25168885 A JP25168885 A JP 25168885A JP S62111754 A JPS62111754 A JP S62111754A
Authority
JP
Japan
Prior art keywords
ink
electric field
orifice
force
electrodes
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.)
Granted
Application number
JP25168885A
Other languages
Japanese (ja)
Other versions
JPH078573B2 (en
Inventor
Hideo Yasutomi
英雄 保富
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP60251688A priority Critical patent/JPH078573B2/en
Priority to US06/927,104 priority patent/US4717926A/en
Priority to DE3638019A priority patent/DE3638019C2/en
Publication of JPS62111754A publication Critical patent/JPS62111754A/en
Publication of JPH078573B2 publication Critical patent/JPH078573B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/06Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005Typewriters 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
    • B41J2/01Ink jet
    • B41J2/015Ink jet characterised by the jet generation process
    • B41J2/04Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2/06Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
    • B41J2002/061Ejection by electric field of ink or of toner particles contained in ink

Landscapes

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

Abstract

PURPOSE:To provide a small and light-weight jet generation-type printer by applying an AC electric field to an electrode so as to allow an electric field curtain force to act on a printing material. CONSTITUTION:When a switch 17 is open, an alternating electric field will not act on ink 13. A pushout force (gravity, etc.) to push the ink 13 toward an orifice 11a and a surface tension force to push back the ink resisting the former force work upon the ink between the orifice 11a and paired electrodes 14, 15. If both forces are allowed to e in balance, the ink 13 is not pushed out of the orifice 11a. Next when the switch 17 is closed by a jet control circuit 21 in accordance with an image signal from a memory 20, an electric field will act on charged color particles of the ink 13. Thus ink between the orifice 11a and the paired electrodes 14, 15 jumps out of the orifice 11a, adhering to ordinary paper 18.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、電界カーテン力を利用したプリンタに関する
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a printer that utilizes electric field curtain force.

(従来の技術および発明の解決すべき問題点)文字画像
情報の出力機器として、従来から、インパクト方式(ワ
イヤドツト、シャトル方式)、静電記録方式、感熱記録
方式、インクジェット方式、レーザービーム電子写真方
式などのプリンタが実用化されている。出力機器につい
ては、さらに、小型軽量化、カラー化、メインテナンス
フリー、低コスト化、低ノイズ化、高速性、高解像性が
要求されている。インクジェット方式プリンタは、小型
軽量化、カラー化、低コスト化、高速化等の要求を最も
よく満たす出力機器である。
(Prior art and problems to be solved by the invention) Conventionally, impact methods (wire dots, shuttle methods), electrostatic recording methods, thermal recording methods, inkjet methods, and laser beam electrophotographic methods have been used as text image information output devices. Printers such as the following have been put into practical use. Output devices are also required to be smaller and lighter, color-compatible, maintenance-free, low-cost, low-noise, high-speed, and high-resolution. An inkjet printer is an output device that best satisfies the demands for smaller size, lighter weight, color, lower cost, and higher speed.

インクジェット方式プリンタには、オンデマンド方式(
パルス加圧方式)やバブルジェット方式などがある。オ
ンデマンド方式は、圧電素子による加圧波の変化により
ノズルから粒子を噴出させ、無偏向のまま記録させる方
式である。また、バブルジェット方式は、ノズル内に埋
め込んだ発熱抵抗素子の発熱によりバブルを発生させて
、そのバブルが広がる力を利用してノズルからインク粒
子を噴出させる方式である。
Inkjet printers have an on-demand method (
There are various methods such as pulse pressurization method) and bubble jet method. The on-demand method is a method in which particles are ejected from a nozzle by changes in pressure waves caused by a piezoelectric element and recorded without being deflected. The bubble jet method is a method in which bubbles are generated by heat generated by a heating resistor element embedded in a nozzle, and ink particles are ejected from the nozzle using the force of the bubbles to spread.

本発明の目的は、従来のインクジェット発生方式よりも
、さらに小型軽量化等の要求に応えうろ新規なジェット
発生方式のプリンタを提供することである。
SUMMARY OF THE INVENTION An object of the present invention is to provide a printer using a new jet generation method that meets the demand for smaller size and lighter weight than the conventional inkjet generation method.

なお、本発明は、電界カーテン力を利用した新規なジェ
ット発生方式であり、2本の電極に交流電界を加えてイ
ンク等に電界カーテン力を作用させ、記録を行う。これ
に対し、スリットジェット記録方式(第14回画像工学
コンファレンス予稿集参照)においては、画素に対応し
て記録電極を配列したスリット状の開口の内に油性イン
クを充満し、記録電極と記録紙背面の対向電極との間に
電圧(直流)パルスを印加することにより、記録電極先
端付近のインクを帯電させ、静電気的な力によりインク
を記録紙に向けて噴出し、記録を行う。
The present invention is a novel jet generation method that utilizes electric field curtain force, and recording is performed by applying an alternating current electric field to two electrodes to apply electric field curtain force to ink or the like. On the other hand, in the slit jet recording method (see Proceedings of the 14th Image Engineering Conference), oil-based ink is filled in slit-shaped openings in which recording electrodes are arranged corresponding to pixels, and the recording electrodes and recording paper are By applying a voltage (DC) pulse between the ink and the opposing electrode on the back, the ink near the tip of the recording electrode is charged, and the ink is ejected toward the recording paper by electrostatic force to perform recording.

また、電界カーテン力は、電子写真複写機の現像機構に
おいて、トナーと磁性キャリアとを分離するために利用
されている(特開昭60−51558号公報参照)。
Further, the electric field curtain force is used to separate toner and magnetic carrier in the developing mechanism of an electrophotographic copying machine (see Japanese Patent Laid-Open No. 60-51558).

(問題点を解決するための手段) 本発明に係る電界カーテンプリンタは、予め帯電手段に
より電荷を帯びさU゛た印刷材料を供給する供給手段と
、供給手段により供給された印刷材料を噴出するための
絶縁性のノズル手段と、ノズル手段の開口部の近傍に、
印刷材料の噴出方向に関して両側に、印刷材料に接触し
ないように配置された少なくとも一対の電極と、電界カ
ーテン力を発生させるように電極に接続された交番電源
と、イメージ信号に対応して交番電源による交番電圧を
?lI極間に加えろジェット制御手段とからなる。
(Means for Solving the Problems) The electric field curtain printer according to the present invention includes a supply means for supplying a printing material that has been charged in advance by a charging means, and a jetting out the printing material supplied by the supply means. an insulating nozzle means for and near the opening of the nozzle means;
at least one pair of electrodes arranged on both sides with respect to the ejecting direction of the printing material so as not to contact the printing material; an alternating power supply connected to the electrodes to generate an electric field curtain force; and an alternating power supply connected to the electrodes in response to the image signal. By alternating voltage? In addition to the jet control means between the poles.

印刷材料には、予め帯電させた荷電粒子を分散させたイ
ンク、荷電インク、帯電させた粒子なとが用いられる。
The printing material used includes ink in which pre-charged charged particles are dispersed, charged ink, and charged particles.

(作 用) 電極間に加えた交番電界により、インク中の荷電粒子等
に、電界カーテン力が作用し、電極とノズル先端との間
の印刷材料が噴出する。イメージ信号に対応して紙に向
けて印刷材料を噴出させ、定着させると、紙にイメージ
が記録される。
(Function) Due to the alternating electric field applied between the electrodes, an electric field curtain force acts on the charged particles in the ink, and the printing material between the electrode and the nozzle tip is ejected. An image is recorded on the paper by ejecting printing material toward the paper in response to the image signal and fixing it.

(実施例) 以下、添付の図面を参照して本発明の詳細な説明する。(Example) Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

第2図(a) 、 (b)を用いて、電界カーテン力の
発生の原理を説明する。2本の棒電極1.2を平行に並
べ、その間に交番電源3を接続する。交番電源3により
交流電界(電気力線を破線で示す)を発生させると、両
枠電極1.2の近くにある荷電粒子(極性は問わない)
4には、第2図(a)にある瞬時の様子を示すように、
電界の勾配に平行なグラディエントカFg、これに垂直
であり且つ両電極1.2を通る平面から遠ざかる方向の
遠心力F。
The principle of generation of electric field curtain force will be explained using FIGS. 2(a) and 2(b). Two rod electrodes 1.2 are arranged in parallel, and an alternating current power source 3 is connected between them. When an alternating current electric field (electric lines of force are shown by broken lines) is generated by the alternating power supply 3, charged particles (regardless of polarity) near both frame electrodes 1.2
4 shows the instantaneous situation in Figure 2(a),
A gradient force Fg parallel to the gradient of the electric field, a centrifugal force F perpendicular to this and away from the plane passing through both electrodes 1.2.

および外力(重力、風など)Foが作用する。外力帯電
粒子4を両電極1.2から遠ざける方向に作用する。(
両電極1.2を通る平面の下側の荷電粒子は、下側に遠
ざかる。) 電気力線の方向は、交流電圧により交番するので、第2
図(b)に示すように、帯電粒子は、ジグザグの連動を
行い、全体的には太い矢印で示す方向の電界カーテン力
を受けて空中に飛翔する。
and external forces (gravity, wind, etc.) Fo act. External force acts in a direction to move the charged particles 4 away from both electrodes 1.2. (
Charged particles below the plane passing through both electrodes 1.2 move away downwards. ) The direction of the electric lines of force alternates depending on the AC voltage, so the second
As shown in Figure (b), the charged particles move in a zigzag pattern and fly into the air under the electric field curtain force in the direction indicated by the thick arrow.

第1図(a)、(b)に、本発明に係るインクジェット
プリンタの記録ヘッド部を図式的に示す。オリフィスl
laを備えたノズル11を有する絶縁性のインクつぼ1
2の中に予め帯電した荷電カラー粒子を分散した高抵抗
のインク又は帯電インク13をtj!たす。2個の電極
14.15をオリフィスllaの近傍に、インク13に
接触しないように、且つ、ノズル11の中心線に関して
相互に対向させて設ける。一方の電極14には、低周波
電源I6を接続し、他方の電極15は、スイッチ17を
介して接地される。
FIGS. 1(a) and 1(b) schematically show a recording head section of an inkjet printer according to the present invention. orifice l
Insulating ink fountain 1 with nozzle 11 with la
A high resistance ink or charged ink 13 in which pre-charged charged color particles are dispersed in tj! Tasu. Two electrodes 14 , 15 are provided near the orifice lla so as not to contact the ink 13 and facing each other with respect to the center line of the nozzle 11 . A low frequency power source I6 is connected to one electrode 14, and the other electrode 15 is grounded via a switch 17.

いま、スイッチ17が開いていると、交番電界はインク
13に作用しない。オリフィスllaと電極対14.1
5との間にあるインクには、インク13をオリフィスl
laの方向へ押す押し出し力(重力など)F、と、これ
に対抗してインクI3を押し戻す表面張力F3とが作用
する。両者F2゜F3がつりあうようにしておくと、イ
ンク13は、オリフィスIlaから押しだされない。
Now, when switch 17 is open, no alternating electric field acts on ink 13. Orifice lla and electrode pair 14.1
5, the ink 13 is inserted into the orifice l.
An extrusion force (such as gravity) F that pushes in the direction of la and a surface tension F3 that pushes back the ink I3 act against this force. If both F2 and F3 are balanced, the ink 13 will not be pushed out from the orifice Ila.

次に、メモリ20のイメージ信号に対応して、ジェット
制御回路21によりスイッチ17を閉じろと、インク1
3中の荷電カラー粒子に?[界が作用し、オリフィスI
Laと電極対14.t5の間にあるインクは、第2図(
b)に示した電界カーテンカFIにより解放端であるオ
リフィスIlaから飛び出し、普通紙18に付着する。
Next, in response to the image signal in the memory 20, the jet control circuit 21 commands the ink 17 to close.
To the charged color particles in 3? [The field acts, orifice I
La and electrode pair 14. The ink between t5 is as shown in Figure 2 (
Due to the electric field curtain FI shown in b), it flies out of the orifice Ila, which is the open end, and adheres to the plain paper 18.

なお、電極対14.15の左側のインクに対して電界カ
ーテン力は左側に作用し、インク13を若干左側に押す
Note that the electric field curtain force acts on the ink on the left side of the electrode pair 14 and 15 to the left, pushing the ink 13 slightly to the left.

いま、たとえば、ノズルの寸法を次のように定める。オ
リフィス内径:約100μm0ノズル外径、約400μ
m0ノズル先端と記録紙との間隔:約4 mm0ノズル
先端と電極中央との距離・約100μm0インク13に
は、高抵抗溶液(導電率的lX1O−12(Ω・cm)
−’)の溶媒に顔料(粒径0.5〜IOμm)を分散し
たインクを用いる。インクの粘度は約6cPであり、表
面張力は約27dyn/amである。スイッチ17を閉
じ、電極14.15に、電圧的70V、周波数800H
zの交流電界を加えると、インク粒子19が噴出し、普
通紙18に転写された。ノズル径を絞り、インク粘度を
調節すると、約50μm径のドツトが形成できる。
For example, the dimensions of the nozzle are determined as follows. Orifice inner diameter: approx. 100μm; nozzle outer diameter, approx. 400μm
Distance between m0 nozzle tip and recording paper: approx. 4 mm Distance between nozzle tip and electrode center: approx. 100 μm0 Ink 13 contains a high resistance solution (conductivity lX1O-12 (Ω cm)
An ink in which a pigment (particle size 0.5 to IO μm) is dispersed in a solvent (-') is used. The ink has a viscosity of about 6 cP and a surface tension of about 27 dyn/am. Close the switch 17 and apply a voltage of 70V and a frequency of 800H to the electrodes 14.15.
When an alternating current electric field of z was applied, ink particles 19 were ejected and transferred onto plain paper 18. By narrowing the nozzle diameter and adjusting the ink viscosity, dots with a diameter of about 50 μm can be formed.

ところで、第1図(a) 、 (b)に示したノズルで
は、インクの飛翔後の空きスペース13aに、後方のイ
ンクが重力と毛管現象により補充されるのに時間がかか
るので、スイッチングの周波数応答を高くするには限界
がある。
By the way, in the nozzles shown in FIGS. 1(a) and 1(b), it takes time for the empty space 13a after the ink has flown to be replenished with ink at the rear due to gravity and capillary action, so the switching frequency is There is a limit to how high the response can be.

そこで、第3図(a)、 (b)に示すように、交番電
源側電極14a 、14bと接地側電極15a 、15
bをそれぞれ2個設ける。すなわち、ノズルIIの外壁
のオリフィスllaの近傍に、インク13に接触しない
ように設け、且つ、電極14aと15aとを対向させ、
さらに適当に間を隔てて電極14bと+5bとを対向さ
せる。
Therefore, as shown in FIGS. 3(a) and 3(b), the alternating power supply side electrodes 14a, 14b and the grounding side electrodes 15a, 15
Two b are provided for each. That is, it is provided near the orifice lla on the outer wall of the nozzle II so as not to contact the ink 13, and the electrodes 14a and 15a are opposed to each other,
Furthermore, the electrodes 14b and +5b are opposed to each other with an appropriate distance between them.

電極+4a、14b、15a、15bの近傍のインクに
は、第3図(c)に示すように電界カーテン力が作用す
る。電極対14a、15aと14b、15bの間のイン
クに対しては、反対方向に作用する電界カーテン力がつ
りあって、実質的には電界カーテン力が作用しない。一
方、電極対14a、15aの右側のインクには、電界カ
ーテン力が右方向に作用し、電極対+4b、15bの左
側のインクには、電界カーテン力が左方向に作用する。
An electric field curtain force acts on the ink near the electrodes +4a, 14b, 15a, and 15b, as shown in FIG. 3(c). The electric field curtain forces acting in opposite directions are balanced against the ink between the electrode pairs 14a, 15a and 14b, 15b, so that substantially no electric field curtain force acts on the ink. On the other hand, an electric field curtain force acts on the ink on the right side of the electrode pair 14a, 15a in the right direction, and an electric field curtain force acts on the ink on the left side of the electrode pair +4b, 15b in the left direction.

スイッチ17が開いていると(第3図(a))、第1図
(a)の場合と同様にインク13には、押し出し力F2
と表面張力F3とかつり合って作用し、インク13はオ
リフィスllaから押し出されない。
When the switch 17 is open (FIG. 3(a)), the ink 13 is subjected to an extrusion force F2 as in the case of FIG. 1(a).
and surface tension F3, and the ink 13 is not pushed out from the orifice lla.

次に、スイッチ17を閉じると(第3図(b))、電極
対14a、+5aとオリフィスllaとの間のインクは
、第1図(b)の場合と同様に付着する。
Next, when the switch 17 is closed (FIG. 3(b)), ink is deposited between the electrode pairs 14a, +5a and the orifice lla in the same manner as in FIG. 1(b).

一方、電極対14b、15bの左側のインクには、左方
向に電界カーテン力が作用し、空洞13bを生じる。さ
らに、両電極14a、15a、!:14b。
On the other hand, an electric field curtain force acts to the left on the ink on the left side of the electrode pair 14b, 15b, creating a cavity 13b. Furthermore, both electrodes 14a, 15a,! :14b.

+5bとの間のインク13cは、電界カーテン力が実質
的に作用しないので、その位置にとどまり、次のインク
粒子を生成するためのパルス信号に対する補充用インク
となる。飛翔インク粒19か飛び出した後、空洞13a
は、1Ili充用インク13c1、− ) h ?Tt
すのシrmシ毛筈m ’1ノ+、−、l・1)f−N 
+’; 1.− ij!古す−される。したがって、こ
のインクノズルの飛翔応答性は改良される。また、ドツ
ト径も微細化できる。
Since the electric field curtain force does not substantially act on the ink 13c between +5b and 5b, the ink 13c remains at that position and serves as replenishment ink for the pulse signal for generating the next ink droplet. After the flying ink particles 19 fly out, the cavity 13a
Is 1Ili charging ink 13c1, -) h? Tt
Sunoshi rmshihair should m '1ノ+,-,l・1)f-N
+'; 1. -ij! to become old. Therefore, the flight response of this ink nozzle is improved. Furthermore, the dot diameter can also be made finer.

一対以上の電極を設ける場合、オリフィス側に電界カー
テン力が作用し、且つ、電極近傍に次のパルス用のイン
ク溜まりができるようであればよい。
When one or more pairs of electrodes are provided, it is sufficient that an electric field curtain force acts on the orifice side and that an ink pool for the next pulse is formed near the electrodes.

また、インク13の代わりに、界面活性処理を施した小
径トナー31を帯電させて(8〜16μC/g)、絶縁
性ノズル32に供給した場合も、電極33.34に交番
電界を加えると、電界カーテン力により荷電トナー31
が粉煙状に飛翔した。
Also, when a small-diameter toner 31 subjected to a surface active treatment is charged (8 to 16 μC/g) instead of the ink 13 and supplied to the insulating nozzle 32, when an alternating electric field is applied to the electrodes 33 and 34, Charged toner 31 due to electric field curtain force
It flew like powder smoke.

オリフィスを絞り、印加時間をパルス的にすれば、許通
紙】8の背面側に転写電極35を設けておくと、普通紙
18上にトナー像が形成できる。これを定着ローラ36
で定着すると、記録が行える。
If the orifice is narrowed and the application time is pulsed, a toner image can be formed on the plain paper 18 by providing the transfer electrode 35 on the back side of the paper 8. Fixing roller 36
Once the image is fixed, recording can be performed.

なお、画素に対応して微小ノズルを平行に一列に並べた
ラインヘッドも同様に作製できる。
Note that a line head in which minute nozzles are arranged in parallel in a row corresponding to pixels can also be manufactured in the same manner.

(発明の効果) 従来のインクジェットの主流であるオンデマンド方式(
パルス加圧式)に比べ、小さな作用面積で大きな体積変
化を生み出仕ることから装置の小型化が図れる(原理、
構造とも簡単である。)。
(Effects of the invention) The on-demand method (which is the mainstream of conventional inkjet)
Compared to the pulse pressurization type), the device can be made smaller because it produces a large volume change with a small area of action (principle,
The structure is also simple. ).

ヘッドは、交番電圧を印加するだけで物理的ストレスを
受けないので、長寿命である。
The head has a long lifespan because it is not subjected to physical stress simply by applying an alternating voltage.

バブルジェット方式に比べ、熱によるインク変質やヘッ
ド空間的蓄熱が無い。
Compared to the bubble jet method, there is no ink deterioration due to heat or heat accumulation in the head space.

アース電圧側をスイッチングさせるだけで交番低周波電
圧を加えることができ、駆動が容易である。
An alternating low frequency voltage can be applied simply by switching the ground voltage side, making driving easy.

また、周波数を変化させることで、インク吐出の周波数
応答性を高めることができる。しfこかって、記録スピ
ードを速くできる(ただし、インク粘度、粒径による制
限は加イつる。)。
Furthermore, by changing the frequency, the frequency response of ink ejection can be improved. Therefore, the recording speed can be increased (however, there are additional limitations due to ink viscosity and particle size).

電界カーテン力は、交番電界下である周波数で反転を繰
り返す。したがって、荷電インクが振幅運動し目づまり
が発生しにくい(印加電圧は飛翔力に比例するので、イ
ンク吐出力が調整できる。)。
The electric field curtain force repeatedly reverses at a certain frequency under an alternating electric field. Therefore, the charged ink moves in an oscillating manner, making clogging less likely to occur (the applied voltage is proportional to the flying force, so the ink ejection force can be adjusted).

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

第1図(a) 、 (b)は、電界カーテンツノによる
インタ粒子の噴出を1悦明するための図である。 第2図(a) 、 (1))は、TLV7.カーテン力
の発生の原理を説明するための図である。 第3図(a)〜(c)は、2対のm極を配置したインク
ジェット発生を説明するための図である。 第4図は、トナーの噴出を示す図である。 11・・・ノズル、12  ・インクつぼ、13・イン
ク、+4.15;14a、I4b、15a、15b  
電極、16・・交流電源、     31・ トナー、
33.34・・電極。 特許出願人   ミノルタカメラ株式会社代  理  
人 弁理士 前出 葆 ほか2名第1図 第2図 (a)         (b)   會第4図
FIGS. 1(a) and 1(b) are diagrams for illustrating the ejection of interparticles by the electric field curtain horn. Figure 2(a), (1)) shows TLV7. FIG. 3 is a diagram for explaining the principle of generation of curtain force. FIGS. 3(a) to 3(c) are diagrams for explaining inkjet generation in which two pairs of m-poles are arranged. FIG. 4 is a diagram showing the ejection of toner. 11... Nozzle, 12 - Ink fountain, 13 - Ink, +4.15; 14a, I4b, 15a, 15b
Electrode, 16. AC power supply, 31. Toner,
33.34... Electrode. Patent applicant Minolta Camera Co., Ltd. Representative
Person Patent attorney: Mr. Hao and two other people Figure 1 Figure 2 (a) (b) Meeting Figure 4

Claims (1)

【特許請求の範囲】[Claims] (1)予め帯電手段により電荷を帯びさせた印刷材料を
供給する供給手段と、 供給手段により供給された印刷材料を噴出するための絶
縁性のノズル手段と、 ノズル手段の開口部の近傍に、印刷材料の噴出方向に関
して両側に、印刷材料に接触しないように配置された少
なくとも一対の電極と、 電界カーテン力を発生させるように電極に接続された交
番電源と、 イメージ信号に対応して交番電源による交番電圧を電極
間に加えるジェット制御手段とからなる電界カーテンプ
リンタ。
(1) A supply means for supplying a printing material charged in advance by a charging means, an insulating nozzle means for ejecting the printing material supplied by the supply means, and near an opening of the nozzle means, at least one pair of electrodes disposed on both sides with respect to the ejecting direction of the printing material so as not to contact the printing material; an alternating power supply connected to the electrodes so as to generate an electric field curtain force; and an alternating power supply connected to the electrode in response to an image signal. and jet control means for applying an alternating voltage between the electrodes.
JP60251688A 1985-11-09 1985-11-09 Electric field printer Expired - Fee Related JPH078573B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP60251688A JPH078573B2 (en) 1985-11-09 1985-11-09 Electric field printer
US06/927,104 US4717926A (en) 1985-11-09 1986-11-05 Electric field curtain force printer
DE3638019A DE3638019C2 (en) 1985-11-09 1986-11-07 Color jet printer with curtain-like electrical field strength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60251688A JPH078573B2 (en) 1985-11-09 1985-11-09 Electric field printer

Publications (2)

Publication Number Publication Date
JPS62111754A true JPS62111754A (en) 1987-05-22
JPH078573B2 JPH078573B2 (en) 1995-02-01

Family

ID=17226529

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60251688A Expired - Fee Related JPH078573B2 (en) 1985-11-09 1985-11-09 Electric field printer

Country Status (1)

Country Link
JP (1) JPH078573B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02286348A (en) * 1989-04-28 1990-11-26 Minolta Camera Co Ltd Recorder
JP2020175648A (en) * 2019-04-16 2020-10-29 ウンジェット カンパニー リミテッド Induced electrohydrodynamic jet printing apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60251687A (en) * 1984-05-29 1985-12-12 Matsushita Electric Ind Co Ltd Manufacture of semiconductor laser device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60251687A (en) * 1984-05-29 1985-12-12 Matsushita Electric Ind Co Ltd Manufacture of semiconductor laser device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02286348A (en) * 1989-04-28 1990-11-26 Minolta Camera Co Ltd Recorder
JP2020175648A (en) * 2019-04-16 2020-10-29 ウンジェット カンパニー リミテッド Induced electrohydrodynamic jet printing apparatus

Also Published As

Publication number Publication date
JPH078573B2 (en) 1995-02-01

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