JPH0136618B2 - - Google Patents
Info
- Publication number
- JPH0136618B2 JPH0136618B2 JP56036489A JP3648981A JPH0136618B2 JP H0136618 B2 JPH0136618 B2 JP H0136618B2 JP 56036489 A JP56036489 A JP 56036489A JP 3648981 A JP3648981 A JP 3648981A JP H0136618 B2 JPH0136618 B2 JP H0136618B2
- Authority
- JP
- Japan
- Prior art keywords
- ion
- electrode
- ion flow
- image
- ions
- 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
- 150000002500 ions Chemical class 0.000 claims description 104
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 3
- 239000003989 dielectric material Substances 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000002800 charge carrier Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 108091008695 photoreceptors Proteins 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/32—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head
- G03G15/321—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by charge transfer onto the recording material in accordance with the image
- G03G15/323—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is formed dotwise, e.g. by a thermal head by charge transfer onto the recording material in accordance with the image by modulating charged particles through holes or a slit
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Printing Methods (AREA)
- Duplication Or Marking (AREA)
- Dot-Matrix Printers And Others (AREA)
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
Description
【発明の詳細な説明】
本発明はイオン流変調電極の形状を工夫してイ
オン入射角を高め記録速度の向上を図つた静電記
録装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrostatic recording device that improves the recording speed by increasing the ion incidence angle by devising the shape of the ion flow modulating electrode.
コンピユータから出力される情報や通信回線に
より伝送される情報またはCCDなどの固体撮像
素子により原稿面像を電気信号に変換して得られ
る情報の画像信号を記録紙上に記録する装置は静
電記録装置として知られ、現在種々の型式のもの
が提案されている。静電記録装置においては、画
像信号に対応した静電潜像を感光体または誘電体
あるいは記録紙などの電荷保持体上に形成する
が、静電潜像形成手段の１つとしてコロナワイヤ
等により発生するコロナイオンを画像信号に応じ
て変調するイオン流変調電極を用い誘電体上に静
電潜像を形成する型式の静電記録装置がある。第
１図はこの型式の静電記録装置の一例の概略構成
を示しており、原稿画像をCCDなどの固体撮像
素子により光電変換して得られる画像信号やコン
ピユータや通信回線からの電気情報信号が信号処
理回路１に供給され、そこで処理された後イオン
流変調電極駆動回路２に供給される。３は信号処
理回路１および駆動回路２から信号を出力させる
タイミングを与えるクロツク発生器を含む制御回
路である。イオン流変調電極４は絶縁層を共通電
極４ａと制御電極４ｂとで挾み、一列または複数
列に形成された複数のイオン通過孔４ｃを有し、
制御電極４ｂには駆動回路２から画像信号が与え
られる。イオン流変調電極４の上方にはコロナワ
イヤー５ａで内蔵したコロナイオン発生器５が配
置されており、イオン流変調電極４の下方には誘
電体の回転ドラム６が配置されている。誘電体回
転ドラム６の周辺には通常の電子写真処理に必要
な現像装置７、転写電極８、分離爪９、除電電極
１０、現像剤掻き落し板１１などが配列されてお
り、さらに定着装置１２が設けられている。コロ
ナイオン発生器５により発生されたイオンはイオ
ン流変調電極４の制御電極４ｂに印加された画像
信号によりイオン通過孔４ｃを通過する量が制御
されるため回転ドラム６の誘電体上に記録すべき
画像情報に対応した静電潜像が形成される。こう
して形成された静電潜像は現像装置７において現
像剤により現像されトナー像となり、該トナー像
は転写電極８により記録紙Ｐに転写される。その
後記録紙Ｐは誘電体回転ドラム６から分離爪９に
より分離され、定着装置１２で定着されて装置外
に排出される。 An electrostatic recording device is a device that records on recording paper image signals of information output from a computer, information transmitted through a communication line, or information obtained by converting an image of a document surface into an electrical signal using a solid-state image sensor such as a CCD. Various types are currently being proposed. In an electrostatic recording device, an electrostatic latent image corresponding to an image signal is formed on a charge carrier such as a photoreceptor, dielectric material, or recording paper. There is a type of electrostatic recording device that forms an electrostatic latent image on a dielectric material using an ion flow modulation electrode that modulates generated corona ions in accordance with an image signal. Figure 1 shows a schematic configuration of an example of this type of electrostatic recording device, in which an image signal obtained by photoelectrically converting an original image using a solid-state image sensor such as a CCD, and an electrical information signal from a computer or communication line are used. The signal is supplied to a signal processing circuit 1, processed there, and then supplied to an ion flow modulation electrode drive circuit 2. Reference numeral 3 denotes a control circuit including a clock generator that provides timing for outputting signals from the signal processing circuit 1 and the drive circuit 2. The ion flow modulation electrode 4 has an insulating layer sandwiched between a common electrode 4a and a control electrode 4b, and has a plurality of ion passage holes 4c formed in one or more rows.
An image signal is applied from the drive circuit 2 to the control electrode 4b. A corona ion generator 5 built in a corona wire 5a is placed above the ion flow modulation electrode 4, and a dielectric rotating drum 6 is placed below the ion flow modulation electrode 4. Arranged around the dielectric rotating drum 6 are a developing device 7, a transfer electrode 8, a separation claw 9, a static elimination electrode 10, a developer scraping plate 11, etc. necessary for normal electrophotographic processing, and a fixing device 12. is provided. The amount of ions generated by the corona ion generator 5 passing through the ion passage hole 4c is controlled by the image signal applied to the control electrode 4b of the ion flow modulating electrode 4, so that the ions are recorded on the dielectric material of the rotating drum 6. An electrostatic latent image corresponding to the desired image information is formed. The electrostatic latent image thus formed is developed with a developer in the developing device 7 to become a toner image, and the toner image is transferred onto the recording paper P by the transfer electrode 8. Thereafter, the recording paper P is separated from the dielectric rotating drum 6 by a separating claw 9, fixed by a fixing device 12, and discharged from the apparatus.
ところで、イオン流変調電極を用いた静電記録
法は電極と誘電体などの記録体とを非接触（0.1
〜2.00mm）に保ちながら解像度の高い階調性のす
ぐれた高品質画像を記録できるので記録装置とし
てはすぐれているが、(1)イオン発生器により発生
されるイオンの電流密度には限度がある
（10μA／cm2程度）、(2)イオン移動度よりイオン制
御時間に下限がある、(3)イオン流変調電極のイオ
ン通過孔のイオン通過率が低いなどの理由から記
録速度が遅いという問題があり、インクミストを
用いたプリンタに応用されている程度にすぎなか
つた。そのために現在の静電記録方式の主流は針
状電極を用いたものである。そこでこのイオン流
変調電極を用いた静電記録方法において記録速度
を上げるために、コロナワイヤーを用いたイオン
発生器以外のイオン発生源（たとえばコロナワイ
ヤーにイオン化しやすいガスを送る方法、高周波
放電を利用する方）および火花放電を利用する方
法を用いる方法も提案されているが、コロナワイ
ヤーを用いるものに比べると構造が複雑になると
いう問題がある。 By the way, the electrostatic recording method using an ion flow modulation electrode is a non-contact method (0.1
It is an excellent recording device because it can record high-quality images with high resolution and excellent gradation while keeping the ion generator at 2.00 mm), but (1) there is a limit to the current density of the ions generated by the ion generator. (approximately 10 μA/ cm2 ); (2) there is a lower limit to the ion control time based on ion mobility; and (3) the ion passage rate of the ion passage hole in the ion flow modulation electrode is low. Due to problems, it has only been applied to printers using ink mist. For this reason, the current mainstream electrostatic recording method uses needle-like electrodes. Therefore, in order to increase the recording speed in the electrostatic recording method using this ion flow modulation electrode, we have developed an ion generation source other than an ion generator using a corona wire (for example, a method of sending a gas that is easily ionized to the corona wire, a method of sending high-frequency discharge, etc.). Methods using spark discharge and methods using spark discharge have also been proposed, but there is a problem that the structure is more complicated than those using corona wire.
さらに、別の方法として、イオン流変調電極の
イオン通過孔に入射するイオン流を収束させるた
めの収束電極を設ける方法（特願昭55−154632
号）、イオン通過量を増すためにイオン流変調電
極の記録体側の電極層を薄くする方法（特願昭55
−168067号）、あるいはイオン流変調電極と記録
体との間にイオン軌道修正用電極を設ける方法
（特願昭55−168068号）などが提案されている。 Furthermore, another method is to provide a focusing electrode for focusing the ion flow incident on the ion passing hole of the ion current modulation electrode (Patent Application No. 154632/1989)
(No.), a method of thinning the electrode layer on the recording medium side of the ion flow modulating electrode to increase the amount of ions passing through (Patent Application No. 1983)
168067) or a method of providing an ion trajectory correction electrode between the ion flow modulating electrode and the recording medium (Japanese Patent Application No. 168068/1982).
第２図は従来のイオン流変調電極によるイオン
流通過の様子を示しており、コロナワイヤー５ａ
により発生されたイオン流は、コロナワイヤー５
ａに印加される電圧と共通電極４ａおよび制御電
極４ｂに印加される電圧との電位差により形成さ
れる電界面に従いイオン流変調電極４に向かい、
そのある割合がイオン通過孔４ｃに入る（第２図
において、実線は等電位面を示し、破線はイオン
軌道を示す。）このイオン通過孔４ｃに入るイオ
ンを増すために、前記共通電極４ａと制御電極４
ｂとの電位差を高めると第２図の実線に示す如き
電界になり、イオン軌道は破線で示すようにな
る。この電位差を小さくすると、イオン通過孔４
ｃに入るイオン量は減少するため通過するイオン
量は少なくなる。そのため記録速度を高めるには
共通電極と制御電極との間の電位差を高めなけれ
ばならない。この場合イオン通過孔４ｃに入つた
イオン流のうち一部は共通電極４ａと制御電極４
ｂとの間の絶縁層に付着し、かなりの部分は制御
電極４ｂ（厚さ約20μｍ）に吸引されるためイオ
ン流の通過率は10％以下にまで低下してしまう。
ここでイオン流通過率とは、イオン流変調電極の
イオン通過孔４ｃへ入射するイオン流による電流
に対するそのイオン通過孔４ｃを通過するイオン
流による電流の割合をいう。 Figure 2 shows how the ion current passes through the conventional ion current modulating electrode, and shows the corona wire 5a.
The ion current generated by the corona wire 5
towards the ion flow modulation electrode 4 according to the electric surface formed by the potential difference between the voltage applied to a and the voltage applied to the common electrode 4a and the control electrode 4b,
A certain proportion of the ions enter the ion passage hole 4c (in FIG. 2, solid lines indicate equipotential surfaces and broken lines indicate ion trajectories). Control electrode 4
When the potential difference with b is increased, the electric field becomes as shown by the solid line in FIG. 2, and the ion trajectory becomes as shown by the broken line. When this potential difference is reduced, the ion passage hole 4
Since the amount of ions entering c decreases, the amount of ions passing through decreases. Therefore, in order to increase the recording speed, it is necessary to increase the potential difference between the common electrode and the control electrode. In this case, part of the ion flow that has entered the ion passage hole 4c is transferred to the common electrode 4a and the control electrode 4.
The ion flow adheres to the insulating layer between the ions and the control electrode 4b, and a considerable portion thereof is attracted to the control electrode 4b (thickness: approximately 20 μm), so that the passage rate of the ion flow decreases to 10% or less.
Here, the ion flow passage rate refers to the ratio of the current due to the ion flow passing through the ion passage hole 4c to the current due to the ion flow entering the ion passage hole 4c of the ion flow modulation electrode.
本発明は、イオン流通過率が低下する原因がイ
オン流変調電極の形状にある点に着目し、上記従
来知られている方法および提案されている方法と
は異なる観点からイオン通過率を向上するために
イオン流変調電極に設けられるイオン通過孔のイ
オン流出側の孔径をイオン流入側の孔径より大き
くしたものである。 The present invention focuses on the fact that the cause of the decrease in ion flow rate is the shape of the ion flow modulation electrode, and improves the ion flow rate from a different perspective from the conventionally known methods and proposed methods. Therefore, the diameter of the ion passing hole provided in the ion flow modulating electrode is made larger on the ion outflow side than on the ion inflow side.
以下図面を参照して本発明を説明する。 The present invention will be explained below with reference to the drawings.
第３図は本発明による静電記録装置のイオン流
変調電極の一実施例を示しており、イオン流変調
電極４に形成されるイオン通過孔４ｃは共通電極
４ａの側すなわちイオン流入側より制御電極４ｂ
の側（すなわちイオン流出側）の方が大きな孔径
を有する。一例として、共通電極４ａおよび制御
電極４ｂの厚さが5μｍ、これら両電極間の絶縁
層の厚さが25μｍのイオン流変調電極においてイ
オン通過孔４ｃのイオン発生器側（イオン流入
側）の孔径を70μｍとし、記録体側（イオン流出
側）の孔径を100μｍとすると、電極への印加電
圧など他の条件は変えなければ、イオン通過率は
上下同孔径のときの25％から90％以上に増加した
ことが実験的に確かめられた。これは、イオン流
変調電極のイオン通過孔の孔径を上記したように
変えることにより、通過孔付近に形成される電界
およびイオン軌道が第４図イに示す従来の場合か
ら同図ロに示すように変化した結果であると考え
られる。すなわち、同図イに示すようにそれまで
は制御電極４ｂに吸収されてしまつていたイオン
流が第４図ロに示すように吸収されずに記録体側
に通過するようになるために、イオン通過率が向
上するものと考えられる。 FIG. 3 shows an embodiment of the ion flow modulation electrode of the electrostatic recording device according to the present invention, and the ion passage hole 4c formed in the ion flow modulation electrode 4 is controlled from the common electrode 4a side, that is, the ion inflow side. Electrode 4b
The side (ie, the ion outflow side) has a larger pore diameter. As an example, in an ion flow modulating electrode in which the common electrode 4a and the control electrode 4b have a thickness of 5 μm and an insulating layer between these electrodes has a thickness of 25 μm, the hole diameter of the ion passing hole 4c on the ion generator side (ion inflow side) If the hole diameter on the recording medium side (ion outflow side) is set to 70 μm and the pore diameter on the recording medium side (ion outflow side) is 100 μm, the ion passage rate will increase from 25% when the upper and lower holes have the same diameter to more than 90%, unless other conditions such as the voltage applied to the electrodes are changed. This was experimentally confirmed. By changing the diameter of the ion passage hole of the ion flow modulation electrode as described above, the electric field and ion trajectory formed near the passage hole can be changed from the conventional case shown in Figure 4A to the one shown in Figure 4B. This is thought to be the result of a change in That is, the ion flow, which had been absorbed by the control electrode 4b as shown in FIG. 4A, now passes to the recording medium without being absorbed, as shown in FIG. It is thought that the passage rate will improve.
以上説明したように、本発明においては、イオ
ン流変調電極のイオン通過孔の孔径をイオン流入
側よりもイオン流出側で大きくしたので、通過孔
を通過して電荷保持体に達するイオン流を増すこ
とができ、記録速度の向上を図ることができる。
その結果高速の静電記録装置が実現でき複写機、
フアクシミリやプリンターへの適用が可能とな
る。本発明において、イオン流変調電極を通過し
たイオンは感光体、誘電体の如き電荷保持体に静
電荷像として記録してもよいし、通過したイオン
をインクミスト等と衝突せしめ、インクミスト等
を荷電し、直接静電記録紙等へ顕像として記録し
てもよい。 As explained above, in the present invention, the diameter of the ion passing hole of the ion flow modulation electrode is made larger on the ion outflow side than on the ion inflow side, thereby increasing the ion flow passing through the passing hole and reaching the charge carrier. Therefore, it is possible to improve the recording speed.
As a result, high-speed electrostatic recording devices could be realized, such as copying machines,
It can be applied to facsimiles and printers. In the present invention, the ions that have passed through the ion flow modulation electrode may be recorded as an electrostatic charge image on a charge holding body such as a photoreceptor or dielectric, or the ions that have passed may be caused to collide with ink mist, etc. It may be charged and directly recorded as a visible image on electrostatic recording paper or the like.
このように本発明によれば簡単な構造上の工夫
により実用上の効果を著るしく高めることができ
る。 As described above, according to the present invention, practical effects can be significantly enhanced by simple structural improvements.
第１図はイオン流変調電極を用いた静電記録装
置の概略構成図、第２図は従来の静電記録装置の
静電荷像形成部の概略構成図、第３図は本発明に
よる静電記録装置の静電荷像形成部の概略構成
図、第４図は従来のイオン流変調電極と本発明に
よるイオン流変調電極における電界形成の様子を
比較する図で、イは従来の場合、ロは本発明の場
合である。
１……信号処理回路、２……駆動回路、３……
制御回路、４……イオン流変調電極、４ａ……共
通電極、４ｂ……制御電極、４ｃ……イオン通過
孔、５……コロナイオン発生器、５ａ……コロナ
ワイヤー、６……回転ドラム、７……現像装置、
８……転写電極、９……分離爪、１０……除電電
極、１１……現像剤掻き落し板、１２……定着装
置。
FIG. 1 is a schematic diagram of an electrostatic recording device using an ion flow modulation electrode, FIG. 2 is a schematic diagram of an electrostatic image forming section of a conventional electrostatic recording device, and FIG. 3 is a diagram of an electrostatic recording device according to the present invention. FIG. 4 is a schematic configuration diagram of the electrostatic image forming section of the recording device, and is a diagram comparing the state of electric field formation in the conventional ion current modulation electrode and the ion current modulation electrode according to the present invention. This is the case of the present invention. 1... Signal processing circuit, 2... Drive circuit, 3...
Control circuit, 4... Ion flow modulation electrode, 4a... Common electrode, 4b... Control electrode, 4c... Ion passage hole, 5... Corona ion generator, 5a... Corona wire, 6... Rotating drum, 7...Developing device,
8... Transfer electrode, 9... Separation claw, 10... Static elimination electrode, 11... Developer scraping plate, 12... Fixing device.
Claims (1)
縁層を挟んで構成し且つ複数のイオン通過孔を有
し前記イオン発生器から発生され前記イオン通過
孔を通過するイオン量を記録すべき画像信号によ
り制御するイオン流変調電極と、前記イオン通過
孔を通過したイオンを保持する記録体とを有し、
前記イオン通過孔のイオン流出側の孔径がイオン
流入側の孔径より大きいことを特徴とする静電記
録装置。1. An image that is composed of an ion generator, a common electrode, and a control electrode with an insulating layer sandwiched between them, and has a plurality of ion passing holes, and the amount of ions generated from the ion generator and passing through the ion passing holes is to be recorded. It has an ion flow modulation electrode controlled by a signal, and a recording body that retains the ions that have passed through the ion passage hole,
An electrostatic recording device characterized in that a hole diameter on an ion outflow side of the ion passage hole is larger than a hole diameter on an ion inflow side.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56036489A JPS57151966A (en) | 1981-03-16 | 1981-03-16 | Electrostatic recorder |
| US06/355,878 US4435066A (en) | 1981-03-16 | 1982-03-08 | Ion modulating electrode with improved transmission factor |
| DE19823209532 DE3209532A1 (en) | 1981-03-16 | 1982-03-16 | ELECTROSTATIC REPLACEMENT DEVICE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56036489A JPS57151966A (en) | 1981-03-16 | 1981-03-16 | Electrostatic recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57151966A JPS57151966A (en) | 1982-09-20 |
| JPH0136618B2 true JPH0136618B2 (en) | 1989-08-01 |
Family
ID=12471231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56036489A Granted JPS57151966A (en) | 1981-03-16 | 1981-03-16 | Electrostatic recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57151966A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61110567A (en) * | 1984-11-06 | 1986-05-28 | Nippon Telegr & Teleph Corp <Ntt> | Ion flow controlling electrode |
| JPS61255870A (en) * | 1985-05-10 | 1986-11-13 | Fuji Xerox Co Ltd | Ion flow control type recording head |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3898085A (en) * | 1971-08-03 | 1975-08-05 | Electroprint Inc | Screen drum with screen tension adjustable axially and circumferentially |
-
1981
- 1981-03-16 JP JP56036489A patent/JPS57151966A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3898085A (en) * | 1971-08-03 | 1975-08-05 | Electroprint Inc | Screen drum with screen tension adjustable axially and circumferentially |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57151966A (en) | 1982-09-20 |
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