JPS6130909B2 - - Google Patents
Info
- Publication number
- JPS6130909B2 JPS6130909B2 JP381578A JP381578A JPS6130909B2 JP S6130909 B2 JPS6130909 B2 JP S6130909B2 JP 381578 A JP381578 A JP 381578A JP 381578 A JP381578 A JP 381578A JP S6130909 B2 JPS6130909 B2 JP S6130909B2
- Authority
- JP
- Japan
- Prior art keywords
- control electrode
- liquid ink
- ink
- voltage
- aperture
- 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.)
- Expired
Links
- 239000007788 liquid Substances 0.000 claims description 57
- 230000001133 acceleration Effects 0.000 claims description 24
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000004044 response Effects 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 239000000976 ink Substances 0.000 description 59
- 230000005684 electric field Effects 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 9
- 239000005871 repellent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000002940 repellent Effects 0.000 description 4
- 238000010292 electrical insulation Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000007641 inkjet printing Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
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
- B41J2/06—Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
-
- 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
- B41J2/06—Ink jet characterised by the jet generation process generating single droplets or particles on demand by electric or magnetic field
- B41J2002/061—Ejection by electric field of ink or of toner particles contained in ink
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、液体（後述の記録媒体に情報を記録
するための流体）の流れを制御するための加速制
御電極、バイアス電極の外に前記流体の流れを減
速するための減速制御電極を設け、前記流体の噴
出量を安定に制御した記録装置に関する。Detailed Description of the Invention [Industrial Field of Application] The present invention provides an acceleration control electrode and a bias electrode for controlling the flow of a liquid (a fluid for recording information on a recording medium to be described later). The present invention relates to a recording device that includes a deceleration control electrode for decelerating the flow of fluid and stably controls the ejection amount of the fluid.
流体の流れを制御する記録装置として、例えば
第１図ａのような、液状インクの静電吸引機構が
考えられている。第１図ａ〜ｄにおいて、１は常
時高電圧が印加されているバイアス電極、２は記
録媒体、４は電気絶縁性で撥水性（水をはじく性
質）の開孔部材、５は加速制御電極、９は電気絶
縁性で親水性の開孔部材である。第１図ｂのよう
に入力信号電圧が加速制御電極５に印加される
と、開孔部８に作用する周縁電界１０とバイアス
電界３とのベクトル電界によつて液状インク面に
電荷が誘起され、そのクーロン力によつて、液状
インク７は第１図ｃに示す位置まで開孔内部を上
昇する。そして第１図ｄに示す如く液状インク７
を突出形状にすることによつてそこに電界集中を
起こさせ、飛翔力を発生させる。この装置の長所
は、バイアス電極の印加電圧を一定に保つていて
よいから、マルチノズル化（多くのノズルを設け
ること）が容易となる点である。この装置では噴
射を始めたインクは液状インク７の凝集力が大き
ければ、インクの補給が続く限り絶えず噴射が行
なわれるであろうと考えられる。しかし、実際に
はインクの補給口を毛細管にしているため、液状
インク７にくびれが発生し、インクの噴射は停止
する。この時、液状インク７の噴射量は加速制御
電極に対する印加電圧と印加時間によつて決定さ
れてある値におちつく。このように、インクの補
給口近傍を毛細管状態にすることによつてインク
の噴射量を制御する構造は安価な手段である。
As a recording device that controls the flow of fluid, an electrostatic suction mechanism for liquid ink as shown in FIG. 1A, for example, has been considered. In Figures 1a to d, 1 is a bias electrode to which a high voltage is constantly applied, 2 is a recording medium, 4 is an electrically insulating and water repellent (water repellent) perforated member, and 5 is an acceleration control electrode. , 9 are electrically insulating and hydrophilic porous members. When an input signal voltage is applied to the acceleration control electrode 5 as shown in FIG. , due to the Coulomb force, the liquid ink 7 rises inside the opening to the position shown in FIG. 1c. Then, as shown in FIG. 1d, the liquid ink 7
By making it into a protruding shape, an electric field is concentrated there and a flight force is generated. The advantage of this device is that since the voltage applied to the bias electrode can be kept constant, multi-nozzle design (installation of many nozzles) is easy. In this device, if the liquid ink 7 has a large cohesive force, the ink that has started to be ejected will continue to be ejected as long as the ink continues to be replenished. However, since the ink supply port is actually a capillary tube, a constriction occurs in the liquid ink 7 and the ink jetting stops. At this time, the ejection amount of the liquid ink 7 settles to a certain value, which is determined by the voltage applied to the acceleration control electrode and the application time. As described above, the structure of controlling the amount of ink ejected by forming the vicinity of the ink supply port into a capillary state is an inexpensive means.
しかしながら、前述した様な制御構造では、液
状インク７の噴射量が不安定で信頼性に欠ける場
合があるという欠点があつた。
However, the above-described control structure has the disadvantage that the amount of liquid ink 7 ejected may be unstable and lack reliability.
前記問題点を解決するために、本発明では、液
状インクが飛翔するための開孔部と該開孔部の噴
射方向先端側に配設した加速制御電極及び上記開
孔部の上記噴射方向先端側とは反対側に配設した
減速制御電極と、上記開孔部に対向して噴射方向
側に設けられたバイアス電極とを有し、上記液状
インクと上記バイアス電極との間に上記液状イン
クが上記開孔部から飛翔しない大きさのバイアス
電圧を印加する手段と、該印加の際に上記液状イ
ンクと上記加速制御電極との間に入力信号に応じ
て上記バイアス電圧と同極性の電圧を印加する手
段と、該印加に次いで上記液状インクと上記減速
制御電極との間に停止信号に応じて上記バイアス
電圧と同極性の電圧を印加する手段とにより、上
記開孔部から選択的に上記液状インクを飛翔させ
る事により記録を行なう記録装置を提供する。
In order to solve the above-mentioned problems, the present invention provides an opening for liquid ink to fly, an acceleration control electrode disposed on the tip side of the opening in the injection direction, and an acceleration control electrode disposed at the tip of the opening in the injection direction. a deceleration control electrode disposed on a side opposite to the side, and a bias electrode disposed on a side in the injection direction opposite to the opening, and the liquid ink is disposed between the liquid ink and the bias electrode. means for applying a bias voltage of a magnitude such that the liquid ink does not fly from the opening, and a voltage having the same polarity as the bias voltage between the liquid ink and the acceleration control electrode according to an input signal during the application; and means for applying a voltage of the same polarity as the bias voltage between the liquid ink and the deceleration control electrode in response to a stop signal, selectively applying the voltage from the opening. To provide a recording device that performs recording by flying liquid ink.
以下、図によつて本発明の説明を行なう。 The present invention will be explained below with reference to the drawings.
第２図ａ，ｂは減速制御電極２０を親水性開孔
部材の内面に設けた本発明第１実施例の画像形成
装置である。
FIGS. 2a and 2b show an image forming apparatus according to a first embodiment of the present invention, in which a deceleration control electrode 20 is provided on the inner surface of a hydrophilic porous member.
第２図ａにおいて、１１は常時高電圧が印加さ
れているバイアス電極、１２は記録媒体、１４は
電気絶縁性があり撥水性を有する開孔部材（基
体）、１５は加速制御電極、１６は電気絶縁性、
撥水性の被覆、１７は液状インク（流体）、１８
は開孔部、１９は電気絶縁性と親水性を有する開
孔部材（基体）、２０は減速制御電極である。 In FIG. 2a, 11 is a bias electrode to which a high voltage is constantly applied, 12 is a recording medium, 14 is an electrically insulating and water-repellent porous member (substrate), 15 is an acceleration control electrode, and 16 is a electrical insulation,
water-repellent coating, 17 liquid ink (fluid), 18
19 is an aperture member (substrate) having electrical insulation and hydrophilic properties, and 20 is a deceleration control electrode.
そして直流電源２１，２２，２３を直列に接続
して前記電源２１のマイナス極を液状インク１７
に、プラス極をスイツチ２４を介して減速制御電
極２０に接続し、前記電源２２のプラス極をスイ
ツチ２５を介して加速制御電極１５に、高圧直流
電源２３のプラス極をバイアス電極１１にそれぞ
れ接続する。 Then, the DC power supplies 21, 22, and 23 are connected in series, and the negative pole of the power supply 21 is connected to the liquid ink 17.
, the positive pole of the power source 22 is connected to the acceleration control electrode 15 through the switch 25, and the positive pole of the high voltage DC power source 23 is connected to the bias electrode 11 through the switch 24. do.
本発明の第１実施例において、液状インク１７
とバイアス電極１１との間に液状インク１７が開
孔部１８から飛翔しない大きさのバイアス電圧を
印加する手段としては直流電源２１，２２、及び
２３が用いられ、液状インク１７と加速制御電極
１５との間に入力信号に応じてバイアス電圧と同
極性の電圧を印加する手段としては直流電源２１
及び２２が用いられ、液状インク１７と減速制御
電極２０との間に停止信号に応じてバイアス電圧
と同極性の電圧を印加する手段として直流電源２
１が用いられる。 In the first embodiment of the present invention, liquid ink 17
DC power supplies 21, 22, and 23 are used as means for applying a bias voltage of a magnitude that prevents the liquid ink 17 from flying out from the opening 18 between the liquid ink 17 and the acceleration control electrode 15. The DC power supply 21 is a means for applying a voltage of the same polarity as the bias voltage between the input signal and the bias voltage.
and 22 are used, and a DC power supply 2 is used as means for applying a voltage of the same polarity as the bias voltage between the liquid ink 17 and the deceleration control electrode 20 in response to a stop signal.
1 is used.
以上述べた構成において、第３図ａ〔又はｂ，
ｃ〕に示すような入力信号電圧が加速制御電極１
５に印加されると、開孔部１８に作用する周縁電
界（前述した）とバイアス電界１３とのベクトル
電界によつて液状インク面に電荷が誘起され、そ
のクーロン力によつて液状インク１７は前述の如
く開孔内部を上昇する。その時の液状インク表面
の高さの時間的変化を表わしたものが第３図ｄで
ある。第３図ｄはｔ＝（B′−Ａ）sec（＝T1secと
する）の間にインク液面が開孔部先端１８′まで
上昇することを表わす。入力信号電圧の波形とし
ては、第３図ａの他に第３図ｂ，ｃでも良い。但
し前記ｂ，ｃの場合には液状インクか開孔部先端
１８′へ上昇するにつれて入力信号電圧を次第に
降下させ、入力信号電圧の印加時間をT1secより
短かくしなければならない。なぜならば入力信号
電圧は液状インクを開孔部先端１８′まで上昇さ
せるクーロン吸引力を与えるが、更に開孔部先端
１８′から噴射しようとするインクに対しては逆
にクーロン抵抗力として働くので、T1sec後に液
状インクが開孔部先端１８′に達する以前に前記
クーロン抵抗力を消滅させるためである。 In the configuration described above, FIG.
The input signal voltage as shown in c] is applied to the acceleration control electrode 1.
5, an electric charge is induced on the surface of the liquid ink by the vector electric field of the peripheral electric field (described above) acting on the aperture 18 and the bias electric field 13, and the liquid ink 17 is caused by the Coulomb force. Climb up inside the aperture as described above. Figure 3d shows the temporal change in the height of the liquid ink surface at that time. FIG. 3d shows that the ink level rises to the aperture tip 18' during t=(B'-A) sec (=T 1 sec). The waveform of the input signal voltage may be as shown in FIGS. 3b and 3c in addition to FIG. 3a. However, in cases b and c, the input signal voltage must be gradually lowered as the liquid ink rises to the tip 18' of the aperture, and the application time of the input signal voltage must be made shorter than T 1 sec. This is because the input signal voltage provides a Coulomb suction force that causes the liquid ink to rise to the aperture tip 18', but it also acts as a Coulomb resistance force against the ink that attempts to be ejected from the aperture tip 18'. This is to eliminate the Coulomb resistance before the liquid ink reaches the aperture tip 18' after , T 1 sec.
ここで、第４図ａに示すように、液状インクが
突出した形状をとれば、バイアス電極１１によつ
て生じたバイアス電界１３が前記液状インク１７
の突出部へ集中する。これは周囲の開孔部材が絶
縁性なので、前記突出した液状インク１７（導電
性）電磁気学的にも周囲から突出しているとみな
せるからである。もし開孔部材が液状インク１７
より導電率の大きな材料、即ち金属材料で構成さ
れていなければ前記電界は液状インク１７へは集
まらず前記金属材料へ逃げるので放電を繰返すだ
けとなる。従つて、この場合には電気エネルギー
は力学的エネルギーに変換されない。そして、液
状インク先端に対する電界集中Ｅが
の時、インクは噴射する。前記式は液状インクに
作用する静電吸引力が表面張力を上まわるための
条件である。但し、αは液状インクの表面張力係
数、ε０は真空中の誘電率、εｓは媒質の誘電係
数、Ｒは開孔の半径である。このようにして
T1secの後に開孔部先端１８′からインクは噴射
しはじめる。第３図ｄのB′H′の破線部分はイン
クが噴射中であることを表わす。そこで、加速制
御電極に入力信号が印加されてからT2sec後（T2
＝H′−Ａとする）に、第３図ｅ〔又はｆ〕に示
した停止信号電圧を減速制御電極２０に印加する
と、減速制御電極近傍の液相−固相界面周面の液
状インク表面に反対電荷２６（第４図ａ）が誘起
され、その周囲にクーロン引力が生ずる。減速制
御電極２０の周囲を覆う絶縁被覆２７が充分薄
く、更にその誘電率が大きければ、非常に低い電
圧でも大きな静電引力を発生させることができ
る。開孔内部側面に直角に作用する静電引力は摩
擦抵抗の如く働くので、液状インク１７は減速制
御電極２０の周面近傍を通過しにくくなり、流れ
の連続性が失われてくびれが発生する。このくび
れは瞬間的に発達し、これに表面張力が手伝うの
で液状インク１７は第４図ｂに示すように液状イ
ンク１７と１７′に分離する。第３図ｄではH′よ
り右の立下りはこのような液滴分離を表わす。本
発明の構成は、本来マルチオリフイスにおいて真
価を発揮できるものであり、次にマルチオリフイ
スとした本発明第２実施例の説明を行なう。尚、
本発明第２実施例は、マルチオリフイスとしたか
否かという点以外については、前記本発明第１実
施例と本質的に同じである。 Here, if the liquid ink has a protruding shape as shown in FIG. 4a, the bias electric field 13 generated by the bias electrode 11 will
Concentrate on the protruding part. This is because the surrounding aperture member is insulative, so the protruding liquid ink 17 (conductive) can be electromagnetically considered to protrude from the surroundings. If the aperture member is liquid ink 17
If the ink is not made of a material with higher conductivity, that is, a metal material, the electric field will not be concentrated on the liquid ink 17 but will escape to the metal material, resulting in only repeated discharges. Therefore, in this case electrical energy is not converted into mechanical energy. Then, the electric field concentration E at the tip of the liquid ink is Ink is ejected when . The above equation is a condition for the electrostatic attraction force acting on the liquid ink to exceed the surface tension. Here, α is the surface tension coefficient of the liquid ink, ε 0 is the dielectric constant in vacuum, εs is the dielectric coefficient of the medium, and R is the radius of the opening. In this way
After T 1 sec, ink begins to be ejected from the aperture tip 18'. The broken line portion B'H' in FIG. 3d indicates that ink is being ejected. Therefore, T 2 sec after the input signal is applied to the acceleration control electrode (T 2
= H'-A), when the stop signal voltage shown in FIG. An opposite charge 26 (FIG. 4a) is induced in , and a Coulomb attraction is generated around it. If the insulating coating 27 surrounding the deceleration control electrode 20 is sufficiently thin and has a large dielectric constant, a large electrostatic attraction can be generated even at a very low voltage. Since the electrostatic attraction acting perpendicularly to the inner side surface of the opening acts like a frictional resistance, it becomes difficult for the liquid ink 17 to pass near the circumferential surface of the deceleration control electrode 20, and the continuity of flow is lost and constriction occurs. . This constriction develops instantaneously, and with the aid of surface tension, the liquid ink 17 separates into liquid inks 17 and 17' as shown in FIG. 4b. In FIG. 3d, the falling edge to the right of H' represents such droplet separation. The configuration of the present invention can exhibit its true value in a multi-orifice, and next, a second embodiment of the present invention, which is a multi-orifice, will be explained. still,
The second embodiment of the present invention is essentially the same as the first embodiment of the present invention, except for whether or not a multi-orifice is used.
第５図ａ，ｂにおいて開孔部材１４ａは厚さ50
〜100μの撥水性と電気絶縁性にすぐれるポリイ
ミドフイルム、テトラフルオルエチレン（テフロ
ン）フイルム等が適する。まず所定のフイルム
（基体）の両面（上面と下面）に銅やアルミ等の
メタル蒸着層導電性物質を付着し積層とする。そ
の上に集積回路技術で公知のパターン焼付け技
術、それに引続くエツチング技術を駆使して第５
図ａに示したような加速制御電極パターン１５
ａ，１５ｂ，１５ｃ等を、更にその裏面に第５図
ｂに示す減速制御電極２０ａ等を設置する〔第５
図ｂは第５図ａを矢印２８の方向から見た開孔部
１８ａの断面図である〕。そして、開孔部１８
ａ，１８ｂ，１８ｃ等の孔あけ加工は微細加工技
術で公知の物理的方法及び科学的方法、例えばレ
ーザ加工技術、電子ビーム加工技術、超音波加工
技術、及びエツチング加工技術等の何れかによる
か又は直径50〜100μ以上なら特殊な治具ボーラ
を使つて機械加工で孔をあける。次に、第５図ｂ
の如く加速制御電極１５ａ、減速制御電極２０ａ
を絶縁被覆１６ａ，２７ａで覆う。更に、開孔部
先端出口の周縁及び開孔部内壁周面にインク反撥
層（撥水層）を設置する。しかし、前記フイルム
の両面、及び開孔部内壁を優れた撥水性を兼ね備
えた絶縁被覆材料で同時にコーデイングすると製
作工程を簡略化する事が出来る。この意味におい
てテフロンコーテイング材は最適の材料である
（但し、減速制御電極の被覆には親水性材料を使
つても良い）。第６図は、このようにして製作し
た本発明の記録装置において、バイアス電極１１
ａに、常時２〜3KVの電圧を印加した状態を示
す。今、入力信号電圧100〜200Vが加速制御電極
１５ａ，１５ｃに200μsecの間印加され、加速制
御電極１５ｂには信号が印加されなかつたとする
と、開孔部１８ａ，１８ｃから印刷媒体１２ａへ
向かつて液状インク１７ａ，１７ｃが噴射する。
そして、加速制御電極１５ａ，１５ｃに対する入
力信号電圧がカツトオフすると同時に減速制御電
極２０ａに10〜20Vの電圧を印加すると、残され
た液状インク１７の噴射が停止する。この噴射を
停止させる機能を有する減速制御電極２０ａに
は、もう１つの機能、つまり、液面制御の機能を
有する。即ち、インクが噴射した直後の開孔部１
８ａ，１８ｃに面するインク液面とインクが噴射
しなかつた開孔部１８ｂに面するインク液面とで
は液面の状態が異なつている。つまり、開孔部１
８ａ，１８ｂの液面は乱れが発生しているが、こ
の減速制御電極２０ａに対する電圧印加は前記液
面の乱れを早急に緩和、鎮静させ、各開孔部に面
する液面の位置を同一に揃えるように作用する。
従つて次に噴射する液状インクの噴射量を安定な
ものにする。 In FIGS. 5a and 5b, the perforated member 14a has a thickness of 50 mm.
Suitable materials include polyimide film, tetrafluoroethylene (Teflon) film, etc., which have excellent water repellency of ~100μ and electrical insulation. First, a conductive material such as a vapor-deposited metal layer such as copper or aluminum is attached to both surfaces (upper and lower surfaces) of a predetermined film (substrate) to form a laminate. On top of that, we made full use of the pattern printing technology known in integrated circuit technology and the subsequent etching technology to create the fifth pattern.
Acceleration control electrode pattern 15 as shown in Figure a
a, 15b, 15c, etc., and the deceleration control electrode 20a shown in FIG. 5b is further installed on the back surface thereof.
FIG. 5B is a cross-sectional view of the opening 18a when FIG. 5A is viewed from the direction of arrow 28]. Then, the opening 18
Holes a, 18b, 18c, etc. may be formed by any physical method or scientific method known in microfabrication technology, such as laser processing technology, electron beam processing technology, ultrasonic processing technology, or etching processing technology. Or, if the diameter is 50 to 100μ or more, use a special jig borer to make the hole by machining. Next, Figure 5b
Acceleration control electrode 15a, deceleration control electrode 20a as shown in FIG.
are covered with insulating coatings 16a and 27a. Furthermore, an ink repellent layer (water repellent layer) is provided on the periphery of the outlet at the tip of the aperture and on the inner wall surface of the aperture. However, the manufacturing process can be simplified by simultaneously coating both sides of the film and the inner wall of the opening with an insulating coating material having excellent water repellency. In this sense, Teflon coating material is the most suitable material (however, a hydrophilic material may be used to coat the deceleration control electrode). FIG. 6 shows the bias electrode 11 in the recording device of the present invention manufactured in this manner.
A shows a state in which a voltage of 2 to 3 KV is constantly applied. Now, suppose that an input signal voltage of 100 to 200 V is applied to the acceleration control electrodes 15a, 15c for 200 μsec, and no signal is applied to the acceleration control electrode 15b. Inks 17a and 17c are ejected.
Then, when a voltage of 10 to 20 V is applied to the deceleration control electrode 20a at the same time as the input signal voltage to the acceleration control electrodes 15a, 15c is cut off, the ejection of the remaining liquid ink 17 is stopped. The deceleration control electrode 20a, which has the function of stopping this injection, has another function, that is, the function of liquid level control. That is, the opening 1 immediately after the ink is jetted
The state of the liquid level is different between the ink liquid level facing the holes 8a and 18c and the ink liquid level facing the opening 18b where no ink was ejected. In other words, the opening 1
Although turbulence has occurred in the liquid levels of 8a and 18b, the application of voltage to this deceleration control electrode 20a quickly alleviates and calms down the turbulence in the liquid levels, and keeps the liquid levels facing each opening at the same position. It acts to align with.
Therefore, the amount of liquid ink to be ejected next is made stable.
このように本発明の記録装置は、減速制御電極
を設ける事によつて流体の噴射量を安定に制御
し、質の良い記録画像を得る事ができる。
As described above, by providing the deceleration control electrode, the recording apparatus of the present invention can stably control the amount of fluid ejected and obtain high-quality recorded images.
第１図ａはインク噴射装置（記録装置）の断面
図、第１図ｂ，ｃ，ｄは開孔部を上昇する液状イ
ンクの様子を表わした断面図。第２図ａは本発明
第１実施例における記録装置の断面図、第２図ｂ
は基体を貫いている開孔部の断面を示した斜視
図。第３図ａ，ｂ，ｃは加速制御電極に印加する
電圧の波形図、第３図ｄは開孔部に液面の位置を
表わしたグラフ図、第３図ｅ，ｆは減速制御電極
に印加する電圧の波形図。第４図ａは本発明第１
実施例において開孔部を上昇した液状インクの様
子を表わした断面図、第４図ｂは第１実施例にお
いて開孔部を上昇した液状インクが分離した瞬間
を示した断面図。第５図ａは本発明第２実施例に
用いる制御電極の配置を示した斜視図、第５図ｂ
は第２実施例に係る開孔部の断面図。第６図は本
発明第２実施例におけるマルチオリフイスの記録
装置を示した断面図、である。
なお図において、１，１１，１１ａ……バイア
ス電極、２，１２，１２ａ……記録媒体、３，１
３……バイアス電界、４，１４……絶縁性、撥水
性の開孔部材、５，１５，１５ａ，１５ｂ，１５
ｃ……加速制御電極、６，１６……絶縁性、撥水
性被膜、７，１７，１７′，１７ａ，１７ｃ……
液状インク、８，１８，１８ａ，１８ｂ，１８ｃ
……開孔部、９，１９……絶縁性、親水性の開孔
部材、１０……加速制御電極による周縁電界、２
０，２０ａ……減速制御電極、２１，２２，２３
……直流電源、２４，２５……スイツチ、２７，
２７ａ……絶縁性被膜である。
FIG. 1a is a sectional view of an ink jetting device (recording device), and FIGS. 1b, c, and d are sectional views showing liquid ink rising through an opening. FIG. 2a is a sectional view of the recording device in the first embodiment of the present invention, FIG. 2b
FIG. 2 is a perspective view showing a cross section of an opening penetrating the base. Figures 3a, b, and c are waveform diagrams of the voltage applied to the acceleration control electrode, Figure 3d is a graph showing the position of the liquid level at the opening, and Figure 3e and f are the voltage waveforms applied to the deceleration control electrode. A waveform diagram of applied voltage. Figure 4a shows the first invention of the present invention.
FIG. 4B is a sectional view showing the state of the liquid ink rising through the opening in the embodiment, and FIG. 4b is a sectional view showing the moment when the liquid ink rising through the opening in the first embodiment separates. Figure 5a is a perspective view showing the arrangement of control electrodes used in the second embodiment of the present invention, Figure 5b
FIG. 2 is a sectional view of an opening according to a second embodiment. FIG. 6 is a sectional view showing a multi-orifice recording device according to a second embodiment of the present invention. In the figure, 1, 11, 11a... bias electrode, 2, 12, 12a... recording medium, 3, 1
3... Bias electric field, 4, 14... Insulating, water-repellent perforated member, 5, 15, 15a, 15b, 15
c... Acceleration control electrode, 6, 16... Insulating, water-repellent coating, 7, 17, 17', 17a, 17c...
Liquid ink, 8, 18, 18a, 18b, 18c
... Opening part, 9, 19 ... Insulating, hydrophilic hole member, 10 ... Peripheral electric field due to acceleration control electrode, 2
0, 20a...Deceleration control electrode, 21, 22, 23
...DC power supply, 24, 25...Switch, 27,
27a...Insulating film.
Claims (1)
部の噴射方向先端側に配設した加速制御電極及び
上記開孔部の上記噴射方向先端側とは反対側に配
設した減速制御電極と、上記開孔部に対向して噴
射方向側に設けられたバイアス電極とを有し、上
記液状インクと上記バイアス電極との間に上記液
状インクが上記開孔部から飛翔しない大きさのバ
イアス電圧を印加する手段と、該印加の際に上記
液状インクと上記加速制御電極との間に入力信号
に応じて上記バイアス電圧と同極性の電圧を印加
する手段と、該印加に次いで上記液状インクと上
記減速制御電極との間に停止信号に応じて上記バ
イアス電圧と同極性の電圧を印加する手段とによ
り、上記開孔部から選択的に上記液状インクを飛
翔させる事により記録を行なう記録装置。 ２ 特許請求の範囲１において 前記加速制御電極と減速制御電極を前記開孔部
を有する部材の一方の面と他方の面にそれぞれ蒸
着した導電性物質で構成した記録装置。[Scope of Claims] 1. An aperture for liquid ink to fly, an acceleration control electrode disposed on the leading end side of the aperture in the jetting direction, and an acceleration control electrode disposed on the opposite side of the aperture from the leading end in the jetting direction. A deceleration control electrode is provided, and a bias electrode is provided on the injection direction side facing the aperture, and the liquid ink is disposed between the liquid ink and the bias electrode from the aperture. means for applying a bias voltage of a magnitude that does not cause the ink to fly; means for applying a voltage of the same polarity as the bias voltage between the liquid ink and the acceleration control electrode according to an input signal during the application; Then, the liquid ink is selectively ejected from the opening by applying a voltage having the same polarity as the bias voltage between the liquid ink and the deceleration control electrode in response to a stop signal. A recording device that performs recording. 2. A recording device according to claim 1, wherein the acceleration control electrode and the deceleration control electrode are made of a conductive material deposited on one surface and the other surface of the member having the opening, respectively.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP381578A JPS5497425A (en) | 1978-01-18 | 1978-01-18 | Recorder |
| US05/945,533 US4263601A (en) | 1977-10-01 | 1978-09-25 | Image forming process |
| DE19782842538 DE2842538A1 (en) | 1977-10-01 | 1978-09-29 | METHOD AND DEVICE FOR IMAGE GENERATION |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP381578A JPS5497425A (en) | 1978-01-18 | 1978-01-18 | Recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5497425A JPS5497425A (en) | 1979-08-01 |
| JPS6130909B2 true JPS6130909B2 (en) | 1986-07-16 |
Family
ID=11567675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP381578A Granted JPS5497425A (en) | 1977-10-01 | 1978-01-18 | Recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5497425A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56167465A (en) * | 1980-05-30 | 1981-12-23 | Nippon Telegr & Teleph Corp <Ntt> | Recording head for ink jet recording |
| JPS57148664A (en) * | 1981-03-11 | 1982-09-14 | Matsushita Electric Ind Co Ltd | Ink jet recording device |
| JPS57148662A (en) * | 1981-03-11 | 1982-09-14 | Matsushita Electric Ind Co Ltd | Ink jet recording device |
| JPS57156267A (en) * | 1981-03-19 | 1982-09-27 | Matsushita Electric Ind Co Ltd | Ink jet recording device |
| US4477869A (en) * | 1983-04-28 | 1984-10-16 | Burroughs Corporation | Pulsed aperture for an electrostatic ink jet system |
| JPS60259457A (en) * | 1984-06-06 | 1985-12-21 | Matsushita Electric Ind Co Ltd | Ink jet recording head |
| JP3745435B2 (en) * | 1996-02-06 | 2006-02-15 | 富士写真フイルム株式会社 | Image forming apparatus and image forming method |
| EP1386739B1 (en) | 2002-07-30 | 2009-12-02 | FUJIFILM Corporation | Electrostatic ejection type ink jet head |
| JP4893111B2 (en) * | 2006-05-31 | 2012-03-07 | 井関農機株式会社 | Combine |
| JP5266456B2 (en) * | 2009-02-17 | 2013-08-21 | 浜松ナノテクノロジー株式会社 | Discharge head |
| KR101432237B1 (en) * | 2012-11-07 | 2014-08-21 | 엔젯 주식회사 | Hybrid-type apparatus for injecting ink |
-
1978
- 1978-01-18 JP JP381578A patent/JPS5497425A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5497425A (en) | 1979-08-01 |
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