JPS62127249A - Electrostatic accelerating type ink jet recorder - Google Patents
Electrostatic accelerating type ink jet recorderInfo
- Publication number
- JPS62127249A JPS62127249A JP26695885A JP26695885A JPS62127249A JP S62127249 A JPS62127249 A JP S62127249A JP 26695885 A JP26695885 A JP 26695885A JP 26695885 A JP26695885 A JP 26695885A JP S62127249 A JPS62127249 A JP S62127249A
- Authority
- JP
- Japan
- Prior art keywords
- ink
- electrode
- charge injection
- photoconductor
- 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.)
- 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
- B41J2/015—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
Landscapes
- Particle Formation And Scattering Control In Inkjet Printers (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の技術分野〕
本発明は、例えば複写機などに好適な静電加速型インク
ジェット記録装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to an electrostatic acceleration type inkjet recording device suitable for, for example, a copying machine.
（発明の技術的背景とその問題点）
従来より、液体インクを記録体上に飛翔させて記録ドツ
トを形成するインクジェット記＠装置が知られている。(Technical Background of the Invention and Problems Thereof) Inkjet recording apparatuses that form recording dots by jetting liquid ink onto a recording medium have been known.
このインクジェット記録ＩＩは、他の記録装置に比べて
騒音が少なく、現像や定着などの処理が不要であるとい
う利点を有し、普通紙記録技術として注目されている。This inkjet recording II has the advantage of being less noisy than other recording apparatuses and does not require processes such as development and fixing, and is attracting attention as a plain paper recording technology.
このようなインクジェット記録装置の中でも、特にイン
ク噴出口をスリット状に形成したスリットジェット記録
装置と呼ばれるものは、インク噴出口がスリット状であ
ることがらインクの目詰まりが生じ龍く、しかも高速記
録が可能であること等から複写機への実用化が望まれて
いる。Among these inkjet recording devices, those called slitjet recording devices in which the ink jetting ports are formed in a slit shape are prone to ink clogging due to the slit-shaped ink jetting ports. It is hoped that this technology will be put to practical use in copying machines because of the fact that it is possible to do so.
このスリットジェット記録方式による静電加速型インク
ジェット記録装置は、幅１００−程度で長さが２００ａ
ｍ＋程度のスリット状インク噴出口内の長手方向に、８
本／纜程度の割合で配設された多数の電荷注入電極と、
この電荷性入電ｔＩｉ、ｔ；よびスリット状インク噴出
口と対向して設けられた背面電極と、これら両電Ｉｉ間
に記録信号に対応して高電圧パルスを印加する手段とを
備えたものである。This electrostatic acceleration type inkjet recording device using the slitjet recording method has a width of about 100mm and a length of 200mm.
In the longitudinal direction of the slit-shaped ink jet port of about m+, 8
A large number of charge injection electrodes arranged at a ratio of about 1/2,
It is equipped with a back electrode provided opposite to the charged incoming currents tIi, t; and the slit-shaped ink ejection ports, and means for applying a high voltage pulse between these two currents Ii in response to a recording signal. be.
そして、選択的に高電圧が印加された部分の帯電油性イ
ンクが静電力により背面電極の方へ吸引され、両電極間
に配置された記録体上に配録信号に対応したインクドツ
トを形成するようにしたものである。Then, the charged oil-based ink in the portion to which a high voltage is selectively applied is attracted toward the back electrode by electrostatic force, forming ink dots corresponding to the distribution signal on the recording medium placed between both electrodes. This is what I did.
このような記録装置では、記録情報に応じて多数の電荷
注入電極の各々に選択的に高電圧パルスを印加するため
の高電圧パルス発生回路を、各電荷注入電極のそれぞれ
に対応して設けなくてはならず装置が複雑化するおそれ
があった。また、多数の電荷注入電極のそれぞれに対応
させて複数のスイッチング回路を接続するのは、結線が
複雑化するという問題もあった。そこで、本発明者等は
先に特願昭５９−１０８７９２号において、受光した光
の強度に応じて電気抵抗が変化する光導電体を、電荷；
↑大電極と同一基板上に集積して１１荷注入電極のそれ
ぞれに接続し、これら光導電体へ記録信号に対応した光
信号を照射した際の光導電体のスイッチング作用によっ
て電荷注入電極に選択的に高電圧パルスを印加させる装
置を提案した。In such a recording device, a high voltage pulse generation circuit for selectively applying a high voltage pulse to each of a large number of charge injection electrodes according to recording information is not provided for each charge injection electrode. There was a risk that the equipment would become complicated. Furthermore, connecting a plurality of switching circuits to each of a large number of charge injection electrodes has the problem of complicating the wiring connections. Therefore, the present inventors previously proposed in Japanese Patent Application No. 59-108792 that a photoconductor whose electrical resistance changes depending on the intensity of received light is charged;
↑It is integrated on the same substrate as the large electrode and connected to each of the 11 charge injection electrodes, and is selected as the charge injection electrode by the switching action of the photoconductor when a light signal corresponding to the recording signal is irradiated to these photoconductors. We proposed a device that applies high voltage pulses.
しかしながら、この装置は背面電極がスリット状インク
噴出口の長手方向に連続しているため、選択された電荷
注入Ｉ！極から背面１ｔｊへ向けて飛翔するインクが広
がってしまい、電荷注入電極の幅よりも広いインク画点
が記録体上に形成されて記録画像の精細さが損われると
いう問題があった。However, in this device, since the back electrode is continuous in the longitudinal direction of the slit-shaped ink jet port, the selected charge injection I! There is a problem in that the flying ink spreads from the pole toward the back surface 1tj, and an ink dot wider than the width of the charge injection electrode is formed on the recording medium, resulting in loss of definition of the recorded image.
本発明はこのような問題に基づきなされたもので、その
目的とするところは、構造のｗｉ化をＩＢくことなく電
荷注入電極ｌ＼の記録信号に対応した高電圧パルスの印
加を容易にするとともに、精細な記録画像が得られる静
電加速型インクジェット記録装置を提供することにある
。The present invention was made based on the above problem, and its purpose is to facilitate the application of a high voltage pulse corresponding to a recording signal to the charge injection electrode \ without changing the structure to IB. Another object of the present invention is to provide an electrostatic acceleration type inkjet recording device that can obtain fine recorded images.
本発明は、スリット状のインク噴出口に先端が臨むよう
に配設されるとともに記録用のインクと接触して該イン
クに電荷を注入する複数の１！荷注入電極と、前記イン
ク噴出口に対向して設けられた背面電極との間に高電圧
パルスを印加して、両電極間の電圧変化に応じて前記イ
ンク噴出口から飛翔したインクを上記両電極間に介在さ
せた記録体上に付着させて記録ドツトを形成するように
した静電加速型インクジェット記！！装置のうち、特に
、前記複数の電荷注入電極を受光量に応じて抵抗値を変
化させる光導電体を介して第１の共通電極に共通接続す
るとともに、固定抵抗体を介して第２の共通電極に接続
し、上記第１および第２の共通電橋にそれぞれ第１およ
び第２の電位を付与し、この状態で前記光導電体に記録
信号に対応した光信号を照射することによって、電荷注
入電陽と背面電極との間に高電圧パルスを印加するよう
にした装置において、前２背面電極を電荷注入電極のそ
れぞれに対応させて複数配設するとともに、これら複数
の背面電極に順次電圧パルスを印加する手段を設けたこ
とを特徴としている。The present invention provides a plurality of 1! which are disposed so that their tips face a slit-shaped ink ejection port, and which come into contact with recording ink and inject charge into the ink. A high voltage pulse is applied between a charge injection electrode and a back electrode provided opposite to the ink jetting port, and the ink jetted from the ink jetting port is injected into the ink jetting port according to the voltage change between the two electrodes. Electrostatic acceleration type inkjet recording that forms recording dots by depositing on a recording medium interposed between electrodes! ! Among the devices, in particular, the plurality of charge injection electrodes are commonly connected to a first common electrode via a photoconductor whose resistance value changes depending on the amount of light received, and the second common electrode is connected via a fixed resistor. By connecting to the electrode and applying first and second potentials to the first and second common electric bridges, respectively, and in this state, irradiating the photoconductor with an optical signal corresponding to the recording signal, the electric charge is generated. In a device that applies a high voltage pulse between an injected charge and a back electrode, a plurality of front two back electrodes are provided corresponding to each of the charge injection electrodes, and a voltage is sequentially applied to the plurality of back electrodes. It is characterized by providing means for applying pulses.
（ｊ！明の効果）
本発明によれば、背面電極を互いに電気的に絶縁された
多数の電慟で構成し、かつこれら背面電極に高電圧パル
スを順次印加するようにしているので、光導電体への光
照射によって選択された電荷注入電極と、高電圧パルス
の印加された背面電極との間にのみ＾い電界が形成され
、高電圧パルスの印加された背面電極に隣接する背面電
極へのインク滴の飛翔は発生しない。したがって、本発
明によればインクの広がりを抑えて画点を極めて小さく
できるので、精細な画像を得ることができる。(j!light effect) According to the present invention, the back electrode is composed of a large number of electrically insulated electrodes, and high voltage pulses are sequentially applied to these back electrodes. A strong electric field is formed only between the charge injection electrode selected by irradiating the conductor with light and the back electrode to which the high voltage pulse was applied, and the back electrode adjacent to the back electrode to which the high voltage pulse was applied No flying of ink droplets occurs. Therefore, according to the present invention, the spread of ink can be suppressed and the pixel can be made extremely small, so that a fine image can be obtained.
（発明の実施例） 以下、本発明の一実施例を図面に基づき説明する。(Example of the invention) Hereinafter, one embodiment of the present invention will be described based on the drawings.
本実施例に係るインクジェット記録Ｈａは、第１図に示
すように、インク噴出部二とインク制御部２とを対向配
置して、両者の間を移動する記録体３上にインク滴を飛
翔させて上記記録体３上に記録画像を形成するようにし
たものである。As shown in FIG. 1, the inkjet recording Ha according to this embodiment arranges an ink ejection section 2 and an ink control section 2 facing each other, and makes ink droplets fly onto a recording medium 3 that moves between the two. A recorded image is formed on the recording medium 3 by using the recording medium 3.
インク噴出部１は、スリット状のインク噴出口Ｐを形成
した先端側の辺を、インクの飛翔位Ｗ１調整を容易なら
しめるためにくさび状に形成したものであり、板状の電
極集合体１１と、この電極集合体１１の上面で上記イン
ク噴出口Ｐ側の面を覆う如く設けられたインク案内部材
１２とで構成されている。インク案内部材１２は、その
基端部に液体インクＱを収容するインク溜め１３を有し
、このインク溜め１３からインク噴出口Ｐにかけて上記
スリットと同一の幅で微小厚みのインク流路Ｒを形成す
べく上記電極集合体１１と対向する而に微小深さの溝を
形成したものとなっている。The ink ejection part 1 has a wedge-shaped edge on the tip side where the slit-shaped ink ejection opening P is formed to facilitate adjustment of the ink ejection position W1, and a plate-shaped electrode assembly 11. and an ink guide member 12 provided on the upper surface of the electrode assembly 11 so as to cover the surface on the side of the ink ejection port P. The ink guide member 12 has an ink reservoir 13 containing liquid ink Q at its base end, and forms an ink flow path R having the same width as the slit and a minute thickness from the ink reservoir 13 to the ink jet port P. In order to achieve this, a groove of minute depth is formed opposite the electrode assembly 11.
電極集合体１１は、電気絶縁性に優れ油性インクＱに冒
され難い、例えばガラス板等の基板１５の上面に、基板
の先端部から基端部へ延びる複数本の線状の電荷注入電
極１６を配設するとともに、上記基板１４の基端部上面
に、各電荷注入電極１６の基端部と所定間隔をあけて配
置されその基端側が共通接続されたｌ！！２の第１の共
通電極１７を形成し、かつこれら第１の共通電極１７と
各電荷注入電極１６とを光導電体１８で接続したもので
ある。The electrode assembly 11 includes a plurality of linear charge injection electrodes 16 extending from the tip end to the base end of the substrate on the upper surface of a substrate 15, such as a glass plate, which has excellent electrical insulation and is not easily affected by the oil-based ink Q. is arranged on the upper surface of the base end of the substrate 14 at a predetermined interval from the base end of each charge injection electrode 16, and the base ends thereof are commonly connected. ! Two first common electrodes 17 are formed, and these first common electrodes 17 and each charge injection electrode 16 are connected by a photoconductor 18.
また、インク案内部材１２は、電気絶縁性に優れた、例
えばセラミックで形成され、インク噴出口Ｐ近傍で前記
電荷注入電極１６の先端部と対向する面に、電荷性入電
１ｉ１６と直交する方向に延びる第２の共通電極１９を
配したものである。The ink guiding member 12 is made of a material having excellent electrical insulation properties, for example, ceramic, and is provided on a surface facing the tip of the charge injection electrode 16 in the vicinity of the ink ejection port P in a direction perpendicular to the chargeable incoming current 1i16. An extending second common electrode 19 is arranged.
上記電荷注入電極１６および第１、第２の共通電極１７
．１９は、上記基板１５およびインク案内部材１３上に
例えば金礪クロームを真空蒸着した後、通常のエツチン
グ加工で形成することができる。第２の共通電極１９の
幅は、インク流路Ｒに液体インクＱを充填した状態で電
荷注入電極１６と第２の共通電極１９との間の電気抵抗
が、光導電体１８の受光時の抵抗値と同じゃ売時の抵抗
値の範囲内、好ましくは中間値になるように、インクの
固有抵抗値を勘案して決定する。また、光１１１体１８
としては、水素化７モリフ７スシリコンが好適であり、
ＣＶＤ法で上記基板１５上に形成することができる。The charge injection electrode 16 and the first and second common electrodes 17
．． 19 can be formed by vacuum-depositing, for example, gold chrome on the substrate 15 and the ink guiding member 13, and then performing a normal etching process. The width of the second common electrode 19 is such that the electrical resistance between the charge injection electrode 16 and the second common electrode 19 when the photoconductor 18 receives light when the ink flow path R is filled with the liquid ink Q is determined. The resistance value is determined in consideration of the specific resistance value of the ink so that it is within the range of the resistance value at the time of sale, preferably an intermediate value. In addition, 111 bodies of light 18
Hydrogenated 7-molyph 7-silicon is suitable as the
It can be formed on the substrate 15 by a CVD method.
第１の共通電極１７には、第１の電位を印加する手段で
ある直流電源２１の負極側が接続されている。また、第
２の共通電極１９には、第２の電位を印加する手段であ
る直流電源２２の正極側が接続されている。そして、直
流電源２１の正極と直流電源２２の負極とは共通接続さ
れ接地されている。The first common electrode 17 is connected to the negative electrode side of a DC power supply 21, which is means for applying a first potential. Further, the second common electrode 19 is connected to the positive electrode side of a DC power supply 22, which is means for applying a second potential. The positive electrode of the DC power source 21 and the negative electrode of the DC power source 22 are commonly connected and grounded.
一方、インク１１１ＷＪ部、？−は、基板３１上に前記
電荷注入電極１６のそれぞれに対向するように複数の背
面電極３２を配設し、上面に上板３３を添設して構成さ
れたものである。各背面電極３２は、例えば８本おきに
共通接続され、これら８つの共通接続部が高電圧パルス
発生回路３４の８つの出力端子にそれぞれ接続されてい
る。On the other hand, Ink 111WJ Department? - is constructed by disposing a plurality of back electrodes 32 on a substrate 31 so as to face each of the charge injection electrodes 16, and attaching an upper plate 33 to the upper surface. For example, every eight back electrodes 32 are commonly connected, and these eight common connections are connected to eight output terminals of the high voltage pulse generating circuit 34, respectively.
高電圧パルス発生回路３４は、例えば、第２図に示すよ
うに構成されている。すなわち、クロック発振器４１か
らの基準クロック信号は３ビツト出力のカウンタ４２に
よってカウントされる。そして、カウンタ４２の３ビツ
トの出力がデコーダ４３に入力される。デコーダ４３は
、入力データに対応した出力端子からパルス信号を出力
する。The high voltage pulse generation circuit 34 is configured as shown in FIG. 2, for example. That is, the reference clock signal from the clock oscillator 41 is counted by the 3-bit output counter 42. Then, the 3-bit output of the counter 42 is input to the decoder 43. The decoder 43 outputs a pulse signal from an output terminal corresponding to input data.
つまり、デコーダ４３の８つの出力端子からは、タイミ
ングを優かずらしてパルス信号が順番に出力される。デ
コーダ４３からのパルス信号は増幅器４４において高電
圧パルスに変換され、この高電圧パルスが前述した背面
電極３２に供給される。That is, the eight output terminals of the decoder 43 sequentially output pulse signals with slightly shifted timing. The pulse signal from the decoder 43 is converted into a high voltage pulse in the amplifier 44, and this high voltage pulse is supplied to the back electrode 32 described above.
次に、このように構成された本実施例に係る記録装置の
作用について説明する。Next, the operation of the recording apparatus according to this embodiment configured as described above will be explained.
ｌ！荷注入電極１６の電位をＶ！、背面電極３２の電位
をＶｏとすると、両電極間の電位差Ｖｘは、Ｖｘ ＝
Ｖｏ −Ｖ ｒ ・ｌｌ）で示さ
れる。l! The potential of the charge injection electrode 16 is set to V! , when the potential of the back electrode 32 is Vo, the potential difference Vx between both electrodes is Vx =
Vo −V r ·ll).
また、第１の共通ｌ！極１７の電位をＶｐ（＜ＯＶ）、
第２の共通層ｔｉ１９の電位をＶＮ（＞ＯＶ） 、光導
電体１８の抵抗値をＲｘ、電荷注入電極１６と第２の共
通電極１９との間の液体インクＱの抵抗値（固定抵抗体
）をＲｃとすると、電荷注入電極の電位Ｖ＋は、
Ｖ＋ ＝Ｖｐ
−（ＶＰ−ＶＮ ） Ｒｘ ／ （Ｒｘ ＋Ｒｃ ）・
・・（２）
で示される。Also, the first common l! The potential of the pole 17 is Vp (<OV),
The potential of the second common layer ti19 is VN (>OV), the resistance value of the photoconductor 18 is Rx, the resistance value of the liquid ink Q between the charge injection electrode 16 and the second common electrode 19 (fixed resistor ) is Rc, the potential V+ of the charge injection electrode is V+ = Vp - (VP-VN) Rx / (Rx + Rc).
...(2) It is shown as follows.
したがって、例えば光が照射された時の光導電体１８の
抵抗値Ｒｐと、光が照射されていない時の光導電体１８
の抵抗（！ＩＲｏと、固定抵抗体の抵抗１ｉｆｌ Ｒｃ
との闇に、
Ｒｐ ＜Ｒｅ ｃＲｏ ・１３）
なる関係が満たされれば、光導電体１８の受光時の電荷
注入電極１６の電位Ｖ＋ｐと、同じゃ九時の電荷注入電
極１６の電位Ｖ＋ｏとは、それぞれ、Ｖ＋ｐ Δｈ円
＝ Ｖｐ
・・・ （４）Ｖ＋ ｏ ４
Ｖｓ ・・・１５）となる。Therefore, for example, the resistance value Rp of the photoconductor 18 when irradiated with light and the resistance value Rp of the photoconductor 18 when not irradiated with light are
resistance (!IRo and the resistance of the fixed resistor 1ifl Rc
In the darkness, Rp <RecRo ・13)
If the following relationship is satisfied, the potential V+p of the charge injection electrode 16 when the photoconductor 18 receives light and the potential V+o of the charge injection electrode 16 when the photoconductor 18 receives light are respectively V+p Δh circle=Vp
... (4) V+ o 4
Vs...15).
つまり、第３図に示すように、光導電体１８に入射され
る光信号に応じて電荷注入Ｗ１橿１６の電位Ｖ１がＶｐ
〜ＶＮの範囲で変化する。In other words, as shown in FIG.
~VN.
一方、背面電極３２には、上記光信号の周波数よりも十
分に高い周波数の高電圧パルスが順次印加される。高電
圧パルスが印加されていない状態での背面電極３２の電
位ＶｏがＯＶ、高電圧パルスの波高値がＶＡであるする
と、電荷注入電極１６と背面電極との間の電位差Ｖｘは
、第３図に示すように、光導電体１８に光信号が照射さ
れている状態でかつ背面電極３２に電圧パルスが印加さ
れた時に最大になる。この時の両電極間の電位差Ｖｘは
、
Ｖｘ ＝Ｖｐ−ＶＮ −ＶＡ −（６）
となる。したがって、第３図に示すように、インク滴の
飛翔が開始されるしきい１ｉＶｔｈが、−ＶＡ ＞Ｖｔ
ｈ＞Ｖｐ ＶＮ ＶＡ ・・・（７）となる
ように電荷注入電極１６と背面電極３２との間の距離を
設定すれば、光信号の入射された電荷注入電極１６から
、それに対向する背面電極３２に高電圧パルスが印加さ
れた時のみ、第４図に示すようにその背面１！極３２に
向けてインク滴が飛翔され、隣接した他の背面電極３２
へは飛翔しない。したがって、この装置によれば、イン
ク滴の広がりを防止できるので、精細な画像を形成する
ことができる。On the other hand, high voltage pulses having a frequency sufficiently higher than the frequency of the optical signal are sequentially applied to the back electrode 32. If the potential Vo of the back electrode 32 in a state where no high voltage pulse is applied is OV and the peak value of the high voltage pulse is VA, the potential difference Vx between the charge injection electrode 16 and the back electrode is as shown in FIG. As shown in FIG. 3, the maximum voltage is reached when the photoconductor 18 is irradiated with an optical signal and a voltage pulse is applied to the back electrode 32. The potential difference Vx between both electrodes at this time is Vx = Vp - VN - VA - (6)
becomes. Therefore, as shown in FIG. 3, the threshold 1iVth at which ink droplets start flying is -VA > Vt
If the distance between the charge injection electrode 16 and the back electrode 32 is set so that h>Vp VN VA (7), the distance between the charge injection electrode 16 to which the optical signal is incident and the back electrode opposite thereto Only when a high voltage pulse is applied to 32, its back surface 1!, as shown in FIG. An ink droplet is ejected toward the electrode 32 and other adjacent back electrodes 32
It does not fly to. Therefore, according to this device, it is possible to prevent the ink droplets from spreading, so that fine images can be formed.
なお、本発明者等は、この記録装置につき次のような試
験を行った。The inventors conducted the following tests on this recording device.
すなわち、ガラス板を基板１５として用い、この基板１
５上に厚み１６００人の金属クローム層を真空蒸着によ
り形成し、エツチング加工により、幅６０ｍ、配列ピッ
チ１２０．の電荷注入電極１６と、これと６０譚の距離
を隔てて第１の共通１！［１７とを形成した。両者の間
に厚み１．５譚の水素化アモルファスシリコン層の光導
電体１８をＣＶＤ法によって形成した。得られた電橿集
合体工上の光導電体１６の部分に １００１ｕｘの光を
照射した際の光導電体１８の抵抗値Ｒｐは ＋、（ｉｘ
１０”Ω、しヤ売時の抵抗［Ｉ Ｒｏは５．６Ｘ １
０’Ωであった。That is, a glass plate is used as the substrate 15, and this substrate 1
A metal chrome layer of 1,600 mm thick was formed on the 5th layer by vacuum deposition, and etched to a width of 60 m and an array pitch of 120 mm. charge injection electrode 16, and a first common 1! separated from this by a distance of 60 points! [17 was formed. A photoconductor 18 made of a hydrogenated amorphous silicon layer having a thickness of 1.5 mm was formed between the two by CVD. The resistance value Rp of the photoconductor 18 when the portion of the photoconductor 16 on the obtained electric rod assembly is irradiated with light of 1001 ux is +, (ix
10”Ω, resistance when sold out [I Ro is 5.6X 1
It was 0'Ω.
一方、インク案内部材１２としてセラミック板を用い、
ここに厚み１６００人の金属クロムを真空蒸着し、エツ
チングによって幅３１１１の第２の共通電慟を形成した
。液体インクとしては固有抵抗が１０９０・ｃｒｎ程度
のものを用いた。On the other hand, using a ceramic plate as the ink guide member 12,
A second common electrode having a width of 3111 mm was formed by vacuum evaporating metallic chromium to a thickness of 1,600 mm and etching it. The liquid ink used had a specific resistance of about 1090·crn.
第１の共通電極１７に一２００ｖを、また第２の共通電
極１９に＋２００ Ｖを印加し、光導電体１８に赤色発
光ダイオード（ＴＬＲ１０８：株式会社 東芝製）を照
射して電荷注入Ｎ慟１６の電位を測定したところ一２０
０■であった。また、赤色発光ダイオードをＯＦＦにし
て電荷注入電極１６の電位を測定したところ、＋２００
Ｖであった。-200 V is applied to the first common electrode 17 and +200 V is applied to the second common electrode 19, and the photoconductor 18 is irradiated with a red light emitting diode (TLR108: manufactured by Toshiba Corporation) to inject charges. When I measured the potential of -20
It was 0■. In addition, when the potential of the charge injection electrode 16 was measured with the red light emitting diode turned off, it was found to be +200.
It was V.
一方、背面電極３２としてポリウレタン樹脂被膜で被覆
した直ｔ！８０１Ｊ１１のニッケル製ワイヤを用い、こ
れを並べて石英粉を混入したエポキシ樹脂でモールドし
一体化した。この背面電極３２は、石英粉混入エポキシ
樹脂中にニッケル製ワイヤの一端部が８本／Ｍの割合に
なるように直線状に配列しである。この背面電？１１３
２を８つおきに共通接続し、８本のリード端子を引出し
た。On the other hand, the back electrode 32 was covered with a polyurethane resin film. Using 801J11 nickel wires, they were lined up and molded with epoxy resin mixed with quartz powder to integrate them. This back electrode 32 has one end of nickel wire arranged in a straight line at a ratio of 8/M in epoxy resin mixed with quartz powder. Is this the backlight? 113
2 were commonly connected every eight, and eight lead terminals were pulled out.
第１および第２の共通電極１７．１９には前述と同様の
電圧を印加し、背面電極３２には、８つのリード端子に
順次、波高値＋７００Ｖ、パルス幅１ ｍ５ｅｃの高電
圧パルスを印加した。電荷注入電極１６と背面電極３２
との間に記録紙をゆっくり移動させ、光導電体１８に向
けて前述した赤色発光ダイオードを点滅させたところ、
これに同期して上記記録紙上には画点が形成された。こ
の画点は極めて微細なものであった。The same voltage as described above was applied to the first and second common electrodes 17 and 19, and a high voltage pulse with a peak value of +700 V and a pulse width of 1 m5ec was applied to the back electrode 32 in sequence to the eight lead terminals. . Charge injection electrode 16 and back electrode 32
When the recording paper was slowly moved between the
In synchronization with this, pixels were formed on the recording paper. This dot was extremely minute.
また、上記の装置を用いて第５図に示すような複写機を
構成した。Furthermore, a copying machine as shown in FIG. 5 was constructed using the above-mentioned apparatus.
すなわち、光源５１からの光を図中点線矢印で示すよう
に原稿台５２にセットされた複写原稿（図示せず）で反
射させ、自己集束型光ファイバアレイ（セルフォックレ
ンズ：日本板硝子社製）５３を介してインク噴出部１の
光導電体に導く。That is, light from a light source 51 is reflected by a copy document (not shown) set on a document table 52 as shown by the dotted line arrow in the figure, and a self-focusing optical fiber array (Selfoc lens: manufactured by Nippon Sheet Glass Co., Ltd.) is used. 53 to the photoconductor of the ink jetting section 1.
一方、記録紙収納ケース５４に収容された記録紙３を、
ローラ５５で順送りし、ガイド５６、ローラ５７を介し
てインク噴出部りとインクｅ＋ｍ＋部２との間に導く。On the other hand, the recording paper 3 housed in the recording paper storage case 54 is
The ink is sequentially fed by a roller 55 and guided between the ink ejection part and the ink e+m+ part 2 via a guide 56 and a roller 57.
第１、第２の共通′Ｒ極及び背面電極に、前述と同様の
電圧を印加したところ、記録紙上にはネガティブ画像が
形成された。また、第１、第２の共通電極への印加電圧
の慢性を逆にしたところ、ポジティブ画像が得られた。When voltages similar to those described above were applied to the first and second common 'R' electrodes and the back electrode, a negative image was formed on the recording paper. Furthermore, when the chronicity of the voltage applied to the first and second common electrodes was reversed, a positive image was obtained.
記録紙３は、ローラ５８．ガイド５９を介してケース６
０の外部に導くようにした。得られた複写画像は極めて
ｌＩ［ｌで画質の良好なものであった。The recording paper 3 is transferred to the roller 58. Case 6 via guide 59
It was made to lead to the outside of 0. The obtained copied image was extremely lI[l and of good image quality.
なお、光導電体は、水素化アモルファスシリコンの池、
セレン−テルルなどのセレン化合金や酸化亜鉛、硫化カ
ドミウムなどの光導電性無機化合物およびこれらの光導
電性組成物扮末と高分子化合物とからなる光導電性組成
物、銅フタロシアニンやビリレン系化合物などの有機光
導電性化合物、有１ｍ光導電性化合物と電荷輸送機能を
持った化合物を積１した光導電性組成物等を用いても良
い。Note that the photoconductor is a hydrogenated amorphous silicon pond,
Selenide alloys such as selenium-tellurium, photoconductive inorganic compounds such as zinc oxide and cadmium sulfide, photoconductive compositions comprising powders of these photoconductive compositions and polymer compounds, copper phthalocyanine and birylene compounds. Organic photoconductive compounds, such as organic photoconductive compounds, and photoconductive compositions containing a photoconductive compound and a compound having a charge transport function may also be used.
また、電荷注入電極と第１の共通電極および光導電体を
担持させるための基板としては、電気絶縁性に優れた材
料が好ましく、本実施例で用いたガラスの他、アルミナ
やサファイヤ、石英等が使用可能である。Furthermore, as the substrate for supporting the charge injection electrode, the first common electrode, and the photoconductor, materials with excellent electrical insulation properties are preferable, and in addition to the glass used in this example, alumina, sapphire, quartz, etc. is available.
また、本発明は、カラーフィルタを介して光導電体に複
写原稿からの反射光を導くように構成し、複数の静電加
速型インクジェット記録装置のそれぞれに異なる色のイ
ンクを充填すれば、カラー画像を複写する装置にも適用
できる。また、ＬＥＤアレイと組合わせれば、ファクシ
ミリ装置やワードプロセッサなどの記録装置やコンピュ
ータなどの出力端末装置としても使用可能である。Further, the present invention is configured to guide reflected light from a copy document to a photoconductor through a color filter, and if each of a plurality of electrostatic acceleration type inkjet recording devices is filled with ink of a different color, color It can also be applied to devices that copy images. Furthermore, when combined with an LED array, it can be used as a recording device such as a facsimile machine or a word processor, or an output terminal device such as a computer.
第１図は本発明の一実施例に係る静電加速型インクジェ
ット記録装置の主要部の一部切欠した斜視図、第２図は
同装置における高電圧パルス発生回路のブロック図、第
３図は同装置の作用を説明するための波形図、第４図は
同装置における記録ドツト形成の様子を説明するための
平面図、第５図は同装置を複写機に応用した例を示す断
面図で縁組、１１・・・電極集合体、１２・・・インク
案内部、１３・・・インク溜め、１５．３１・・・基板
、１６・・・電荷注入１ｅｉ、１７・・・第１の共通電
極、１８・・・光導電体、１９・・・第２の共通１ｉ１
．２１．２２・・・直流電源、３２・・・背面電極、３
３・・・上板、３４・・・高電圧パルス発生回路、５２
・・・原稿台、５３・・・自己集束型光ファイバアレイ
、Ｐ・・・スリット状インク噴出口、Ｑ・・・液体イン
ク。
出願人代理人 弁理士 鈴江武彦
か ０
営 〉〉〉
−，亀FIG. 1 is a partially cutaway perspective view of the main parts of an electrostatic acceleration inkjet recording device according to an embodiment of the present invention, FIG. 2 is a block diagram of a high voltage pulse generation circuit in the same device, and FIG. FIG. 4 is a waveform diagram to explain the operation of the device, FIG. 4 is a plan view to explain how recording dots are formed in the device, and FIG. 5 is a cross-sectional view showing an example in which the device is applied to a copying machine. 11... Electrode assembly, 12... Ink guide section, 13... Ink reservoir, 15.31... Substrate, 16... Charge injection 1ei, 17... First common electrode , 18... photoconductor, 19... second common 1i1
．． 21.22...DC power supply, 32...Back electrode, 3
3... Upper plate, 34... High voltage pulse generation circuit, 52
... Document table, 53 ... Self-focusing optical fiber array, P ... Slit-shaped ink jetting port, Q ... Liquid ink. Applicant's agent Patent attorney Takehiko Suzue 0 Management 〉〉〉 −, Kame
Claims (5)
設されるとともに記録用のインクと接触して該インクに
電荷を注入する複数の電荷注入電極と、これら電荷注入
電極に接続されて受光量に応じて抵抗値を変化させる光
導電体と、この光導電体を介して前記電荷注入電極に接
続された第１の共通電極と、この第１の共通電極に第１
の電位を印加する手段と、前記複数の電荷注入電極に接
続された固定抵抗体と、この固定抵抗体を介して前記電
荷注入電極に接続された第２の共通電極と、この第２の
共通電極に第２の電位を印加する手段と、前記インク噴
出口に対向して設けられた背面電極と、この背面電極に
第３の電位を印加する手段と、記録信号に対応した光信
号を前記光導電体に照射する手段とを備え、前記光導電
体への光照射によって生じた前記電荷注入電極と前記背
面電極との間の電圧変化に伴って前記インク噴出口から
飛翔したインクを上記両電極間に介在させた記録体上に
付着させて記録ドットを形成するようにした静電加速型
インクジェット記録装置において、前記背面電極を前記
電荷注入電極のそれぞれに対応させて複数配設するとと
もに、これら複数の背面電極に順次電圧パルスを印加す
る手段を備えたことを特徴とする静電加速型インクジェ
ット記録装置。(1) A plurality of charge injection electrodes that are disposed so that one end faces the slit-shaped ink jetting port and that contact recording ink to inject charge into the ink, and a plurality of charge injection electrodes that are connected to these charge injection electrodes. a photoconductor whose resistance value changes depending on the amount of light received; a first common electrode connected to the charge injection electrode via the photoconductor; and a first common electrode connected to the first common electrode.
a fixed resistor connected to the plurality of charge injection electrodes; a second common electrode connected to the charge injection electrode via the fixed resistor; means for applying a second potential to the electrode; a back electrode provided opposite to the ink ejection port; means for applying a third potential to the back electrode; means for irradiating the photoconductor with light, the ink jetted from the ink jetting port in response to a voltage change between the charge injection electrode and the back electrode caused by the irradiation of light onto the photoconductor. In an electrostatic acceleration type inkjet recording device in which recording dots are formed by depositing on a recording medium interposed between electrodes, a plurality of said back electrodes are arranged corresponding to each of said charge injection electrodes, and An electrostatic acceleration inkjet recording device characterized by comprising means for sequentially applying voltage pulses to the plurality of back electrodes.
写原稿からの反射光を前記光導電体へ照射する機構であ
ることを特徴とする特許請求の範囲第１項記載の静電加
速型インクジェット記録装置。(2) The electrostatic charge according to claim 1, wherein the means for irradiating the photoconductor with the optical signal is a mechanism that irradiates the photoconductor with reflected light from a copy original. Accelerated inkjet recording device.
、前記光導電体に照射する光信号の照射周期よりも十分
に短い周期の高電圧パルス信号を前記背面電極に印加す
るものであることを特徴とする特許請求の範囲第１項記
載の静電加速型インクジェット記録装置。(3) The means for sequentially applying voltage pulses to the back electrode applies a high voltage pulse signal to the back electrode with a cycle sufficiently shorter than the irradiation cycle of the optical signal irradiated to the photoconductor. An electrostatic acceleration type inkjet recording apparatus according to claim 1, characterized in that:
あることを特徴とする特許請求の範囲第１項記載の静電
加速型インクジェット記録装置。(4) The electrostatic acceleration type inkjet recording apparatus according to claim 1, wherein the first potential and the second potential have opposite polarities.
を特徴とする特許請求の範囲第１項記載の静電加速型イ
ンクジェット記録装置。(5) The electrostatic acceleration type inkjet recording apparatus according to claim 1, wherein the fixed resistor is the recording ink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26695885A JPS62127249A (en) | 1985-11-27 | 1985-11-27 | Electrostatic accelerating type ink jet recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26695885A JPS62127249A (en) | 1985-11-27 | 1985-11-27 | Electrostatic accelerating type ink jet recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62127249A true JPS62127249A (en) | 1987-06-09 |
Family
ID=17438055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26695885A Pending JPS62127249A (en) | 1985-11-27 | 1985-11-27 | Electrostatic accelerating type ink jet recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62127249A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6252620B1 (en) | 1998-07-03 | 2001-06-26 | Nec Corporation | Image recording apparatus and image recording method |
-
1985
- 1985-11-27 JP JP26695885A patent/JPS62127249A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6252620B1 (en) | 1998-07-03 | 2001-06-26 | Nec Corporation | Image recording apparatus and image recording method |
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