JPH02279354A - Forming method for electrostatic latent image - Google Patents
Forming method for electrostatic latent imageInfo
- Publication number
- JPH02279354A JPH02279354A JP10022889A JP10022889A JPH02279354A JP H02279354 A JPH02279354 A JP H02279354A JP 10022889 A JP10022889 A JP 10022889A JP 10022889 A JP10022889 A JP 10022889A JP H02279354 A JPH02279354 A JP H02279354A
- Authority
- JP
- Japan
- Prior art keywords
- electrostatic latent
- latent image
- ion
- ion current
- signal
- 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
- 238000000034 method Methods 0.000 title claims description 10
- 150000002500 ions Chemical class 0.000 claims description 70
- 230000005684 electric field Effects 0.000 claims description 12
- 230000005855 radiation Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 2
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001093 holography Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Landscapes
- Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
- Dot-Matrix Printers And Others (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は絶縁性媒体上にイオンを照射することにより静
電潜像を形成する方法に関する。静電潜像の用途として
は、静電潜像をトナーにより現像して高品質な記録像を
作成することができる。他の応用としては、熱可塑性プ
ラスチック上に静電潜像を形成し、熱処理することによ
り、ホログラフィ再現もできる高精細な光散乱凹凸像を
作成することができる。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of forming an electrostatic latent image by irradiating an insulating medium with ions. As for the use of the electrostatic latent image, a high quality recorded image can be created by developing the electrostatic latent image with toner. As another application, by forming an electrostatic latent image on a thermoplastic and heat-treating it, it is possible to create a high-definition light-scattering uneven image that can be reproduced by holography.
（従来の技術）
コロナ放電から生じる１イオン流の制御は、第５図に示
すように、開口電極１７．１７’および１８．１８’に
加える電圧の向きによって行っている。左はイオンが通
過可能な状態、右はイオンが通過できない状態である。(Prior Art) The flow of one ion resulting from corona discharge is controlled by the direction of the voltage applied to the aperture electrodes 17, 17' and 18, 18', as shown in FIG. The left side is a state where ions can pass through, and the right side is a state where ions cannot pass through.
１９はコロナワイヤ、２０はコロナイオン源、２１は記
録媒体を示す。19 is a corona wire, 20 is a corona ion source, and 21 is a recording medium.
開口電極は第６図に示すように、多数個の開口２２から
イオンを照射している。ｖｏはコロナ用高電圧、Ｖ、、
Ｖ２はイオン流制御用電圧、Ｔはイオン流通過時間
、２３はイオン流制御用電極を示す。As shown in FIG. 6, the aperture electrode irradiates ions through a large number of apertures 22. vo is high voltage for corona, V...
V2 represents an ion flow control voltage, T represents an ion flow passage time, and 23 represents an ion flow control electrode.
イオン流制御用電圧■２で開口内の電圧を制御する。従
来、イオン流量“は電極間に加えるパルス幅か電圧の大
きさによって制御されていたので、解像度、照射イオン
量の制御可能ダイナミックレンジおよび精度に限界があ
るという欠点があった。The voltage inside the aperture is controlled by the ion flow control voltage (2). Conventionally, the ion flow rate has been controlled by the pulse width or voltage applied between the electrodes, which has the drawback of limited resolution, controllable dynamic range of ion amount, and accuracy.
（発明が解決しようとする課Ｈ）
本発明は、高解像度で、非常に高精度でダイナミックレ
ンジの広い静電潜像を形成できる方法を提供することに
ある。(Problem H to be Solved by the Invention) An object of the present invention is to provide a method capable of forming an electrostatic latent image with high resolution, very high precision, and a wide dynamic range.
（課題を解決するための手段）
本発明の静電潜像形成方法は、コロナ放電から生じたイ
オンの流れを、開口電極中の電界の向きおよび大きさを
制御して、記録媒体上に静電潜像を形成する方法におい
て、開口電極から流れ出すイオン流量を検出して、その
検出値をもとに静電潜像記録信号に対応する所望のイオ
ン電流が流れ出るように、開口電極対に加える電圧を制
御する。(Means for Solving the Problems) The electrostatic latent image forming method of the present invention controls the direction and magnitude of the electric field in the aperture electrode so that the flow of ions generated from corona discharge is immobilized on the recording medium. In a method for forming an electrostatic latent image, the flow rate of ions flowing out from an aperture electrode is detected, and based on the detected value, a desired ion current corresponding to an electrostatic latent image recording signal is applied to a pair of aperture electrodes so that a desired ion current flows out. Control voltage.
従来は、イオン流量を検出し、その検出値をもとに電極
対に加える電圧を制御することを行っていなかった。Conventionally, the ion flow rate was not detected and the voltage applied to the electrode pair was not controlled based on the detected value.
（実施例）
第１図は本発明の一実施例を説明する図であって、１は
記録媒体保持ドラム、２はイオン流照射ヘッド、３は開
口電極対、４はイオン流照射ヘッド走査機構および制御
回路、５はイオン電流検出回路、６はイオン電流検出抵
抗、７は記録媒体保持ドラム回転用モータ制御回路、８
はイオン流制御回路、９は静電潜像記録信号発生および
記録機構制御部、１０は記録媒体保持ドラム回転用モー
タ、１１はコロナ放電用高圧電源である。(Embodiment) FIG. 1 is a diagram illustrating an embodiment of the present invention, in which 1 is a recording medium holding drum, 2 is an ion current irradiation head, 3 is a pair of aperture electrodes, and 4 is an ion current irradiation head scanning mechanism. and a control circuit, 5 is an ion current detection circuit, 6 is an ion current detection resistor, 7 is a motor control circuit for rotating the recording medium holding drum, 8
9 is an ion flow control circuit, 9 is an electrostatic latent image recording signal generation and recording mechanism control section, 10 is a motor for rotating the recording medium holding drum, and 11 is a high voltage power source for corona discharge.
これを動作させるには、静電潜像発生および記録機構制
御部９からドラム回転信号とヘッド走査信号をそれらの
制御部７．４に送ると同時に、それらの位置を示す信号
に対応した静電潜像記録信号をイオン流制御回路８に送
る。イオン流照射ヘッド２からドラムに照射されたイオ
ン流は、イオン電流検出抵抗６を通って、コロナ用高圧
電源１１に帰るので、イオン電流はイオン電流検出抵抗
６の両端に生じる電圧から検出できる。イオン流制御回
路８では、送られてきた記録信号どおりにイオン流検出
回路５から送られてくるイオン電流信号がなるように制
御した電圧を電極対に加える。To operate this, the drum rotation signal and head scanning signal are sent from the electrostatic latent image generation and recording mechanism control section 9 to the control section 7.4, and at the same time, electrostatic The latent image recording signal is sent to the ion flow control circuit 8. The ion current irradiated onto the drum from the ion current irradiation head 2 passes through the ion current detection resistor 6 and returns to the corona high voltage power supply 11, so that the ion current can be detected from the voltage generated across the ion current detection resistor 6. The ion flow control circuit 8 applies a controlled voltage to the electrode pair so that the ion current signal sent from the ion flow detection circuit 5 matches the received recording signal.
このように、ドラムを回転し、ヘッドを走査しながら、
ドラム上に保持された記録媒体上に静電潜像を形成する
。In this way, while rotating the drum and scanning the head,
An electrostatic latent image is formed on a recording medium held on a drum.
第２図は、開口電極対に加える電圧を変化させることに
よる開口付近のイオンの軌跡の変化の様子を示している
。第２図において、１２は開口部の中心軸、１３はコロ
ナワイヤ側電極、１４は記録媒体側電極である。Ｅ ｌ
はコロナワイヤ側の開口電極付近の電界、Ｅ２は開口
電極内の電界、Ｅ、は記録媒体側の電界である。第２図
から、開口中の電界が小さ（なるとイオン流の径が小さ
くなり、電流が減少することがわかる。また、記録媒体
側電極と記録媒体間の電界Ｅ３が大きくなると、イオン
電流量はほとんど変化しないが、イオン流径が細くなる
ことがわかる。FIG. 2 shows how the trajectory of ions near the aperture changes by changing the voltage applied to the aperture electrode pair. In FIG. 2, 12 is the center axis of the opening, 13 is the corona wire side electrode, and 14 is the recording medium side electrode. El
is the electric field near the aperture electrode on the corona wire side, E2 is the electric field within the aperture electrode, and E is the electric field on the recording medium side. From Fig. 2, it can be seen that when the electric field in the aperture becomes small (the diameter of the ion flow becomes small and the current decreases), when the electric field E3 between the recording medium side electrode and the recording medium becomes large, the amount of ion current decreases. Although there is almost no change, it can be seen that the ion flow diameter becomes narrower.
第３図は、開口電極内の電界と開口を通過するイオン電
流の関係を示す図である。通過するイオン電流は電界に
対してＯから徐々に増大していくことがわかる。従って
、静電潜像書き込み信号に比べて、流れζいるイオン電
流が少なければ、開口電極内の電界を増大させ、信号ど
おりのイオン電流が流れるようにすることができる。な
お図中のｔは電極間の距離、ｄは開口の直径を示す。FIG. 3 is a diagram showing the relationship between the electric field within the aperture electrode and the ion current passing through the aperture. It can be seen that the passing ion current gradually increases from O with respect to the electric field. Therefore, if the flowing ion current is smaller than the electrostatic latent image writing signal, the electric field within the aperture electrode can be increased to cause the ion current to flow in accordance with the signal. Note that t in the figure indicates the distance between the electrodes, and d indicates the diameter of the opening.
また、開口から流れ出すイオン電流量は、開口電極内の
電界以外に、時間的にイオン流通過のパルス幅か、パル
ス数で制御することができる。開口から流れ出すイオン
電流を検出し、静電潜像記録信号の値になるまで、イオ
ン流通過の状態を続けるか、パルスを加えることにより
、静電潜像信号どおりの静電潜像を形成できる。さらに
、静電潜像信号により、パルス電圧、パルス幅の双方を
制御すると、さらに高精度の制御が可能である。In addition to the electric field within the aperture electrode, the amount of ion current flowing out from the aperture can be controlled temporally by the pulse width or number of pulses of the ion flow. By detecting the ion current flowing out of the aperture and continuing to pass the ion current until it reaches the value of the electrostatic latent image recording signal, or by applying a pulse, it is possible to form an electrostatic latent image according to the electrostatic latent image signal. . Furthermore, if both the pulse voltage and pulse width are controlled using the electrostatic latent image signal, even more precise control is possible.
イオン電流の検出法は、第４図に示すように、イオン電
流検出用電極１５を設ける方法もある。検出用電極には
、イオン電流制御用電極対１６と検出用電極間のイオン
数に比例する値と、検出用電極とドラム間のイオン数に
比例する値の差に対応した電圧波形が誘起される。この
電圧波形から照射イオン流を算出できる。このようにす
ると、多数の開口電極で同時に静電潜像を形成できるの
で、記録速度を向上させることができる。As a method of detecting the ion current, as shown in FIG. 4, there is also a method of providing an ion current detection electrode 15. A voltage waveform corresponding to the difference between a value proportional to the number of ions between the ion current control electrode pair 16 and the detection electrode and a value proportional to the number of ions between the detection electrode and the drum is induced in the detection electrode. Ru. The irradiation ion flow can be calculated from this voltage waveform. In this way, electrostatic latent images can be formed simultaneously using a large number of aperture electrodes, so that the recording speed can be improved.
（発明の効果）
以上説明したように、本発明の静電潜像形成方法によれ
ば、開口電極から流れ出ずイオン流量を検出して、画像
記録信号どおりのイオン電流が流れ出るように、制御し
ているので、非常に高解像度で、高精度な静電潜像を形
成できる利点がある。(Effects of the Invention) As explained above, according to the electrostatic latent image forming method of the present invention, the ion current is controlled so that it does not flow out from the aperture electrode and flows out in accordance with the image recording signal by detecting the ion flow rate. Therefore, it has the advantage of being able to form a highly accurate electrostatic latent image with very high resolution.
第１図は本発明の一実施例の説明図、
第２図は開口電極付近のイオンの軌跡の解析例を示す図
、
第３図はイオン電流と開口電極内の電界との関係の測定
例を示す図、
第４図はイオン電流検出法の説明図、
第５図はイオン流の制御原理の説明図、第６図（ａ）は
従来のイオン流制御ヘッドの例を示す斜視図、第６図（
ｂ）は第６図（ａ）におけるイオン流制御用電圧■２の
波形の一例を示す図である。
１・・・記録媒体保持ドラム
２・・・イオン流照射ヘッド
３・・・開口電極対
４・・・イオン流照射ヘッド走査機構および制御回路５
・・・イオン電流検出回路
６・・・イオン電流検出抵抗
７・・・記録媒体保持ドラム回転用モータ制御回路８・
・・イオン流制御回路
９・・・静電潜像記録信号発生および記録機構制御部１
０・・・記録媒体保持ドラム回転用モータ１１・・・コ
ロナ放電用高圧電源
１２・・・開口部の中心軸
１３・・・コロナワイヤ側電極
１４・・・記録媒体側電極
１５・・・イオン電流検出用電極
１６・・・イオン電流制御用電極
１７、１７’ 、 １８．１８’・・・開口電極１９・
・・コロナワイヤ
２０・・・コロナイオン源
２１・・・記録媒体
２２・・・開口
２３・・・イオン流制御用電圧。
第２図
Ａ１１ｅｌ”
第４
図
１θ−−−イオン１１〃し卿制御用９壬セ丈寸第３図
閉口？極内／ｌ＋Ｉｆ（イ士尭目盛）
第５
図
ｆ’／
２ｔ−−−ｔ、巴縁祥杯
第６図
（ｂ）Figure 1 is an explanatory diagram of one embodiment of the present invention. Figure 2 is a diagram showing an analysis example of ion trajectories near the aperture electrode. Figure 3 is an example of measurement of the relationship between the ion current and the electric field within the aperture electrode. Figure 4 is an explanatory diagram of the ion current detection method; Figure 5 is an explanatory diagram of the ion flow control principle; Figure 6(a) is a perspective view showing an example of a conventional ion flow control head; Figure 6 (
b) is a diagram showing an example of the waveform of the ion flow control voltage 2 in FIG. 6(a). 1...Recording medium holding drum 2...Ion flow irradiation head 3...Aperture electrode pair 4...Ion flow irradiation head scanning mechanism and control circuit 5
... Ion current detection circuit 6 ... Ion current detection resistor 7 ... Recording medium holding drum rotation motor control circuit 8.
...Ion flow control circuit 9...Electrostatic latent image recording signal generation and recording mechanism control section 1
0... Recording medium holding drum rotation motor 11... High voltage power source for corona discharge 12... Central axis of opening 13... Corona wire side electrode 14... Recording medium side electrode 15... Ion Current detection electrode 16...Ion current control electrode 17, 17', 18.18'...Aperture electrode 19.
...Corona wire 20...Corona ion source 21...Recording medium 22...Aperture 23...Ion flow control voltage. Fig. 2 A11el'' 4 Fig. 1θ--Ion 11〃Ion control 9mm length Fig. 3 Closing?Inside/l+If (Ishiyo scale) Fig. 5 f'/2t---t , Tomoe Ensho Cup Figure 6 (b)
Claims (1)
の電界の向きおよび大きさで制御して、記録媒体上に静
電潜像を形成する方法において、開口電極から流れ出す
イオン流量を検出して、その検出値をもとに静電潜像記
録信号に対応する所望のイオン電流が流れ出るように、
開口電極対に加える電圧を制御することを特徴とする静
電潜像形成方法。1. In a method of forming an electrostatic latent image on a recording medium by controlling the flow of ions generated from corona discharge by the direction and magnitude of the electric field in the aperture electrode, the flow rate of ions flowing out from the aperture electrode is detected. Then, based on the detected value, the desired ion current corresponding to the electrostatic latent image recording signal flows out.
An electrostatic latent image forming method characterized by controlling a voltage applied to a pair of aperture electrodes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10022889A JPH02279354A (en) | 1989-04-21 | 1989-04-21 | Forming method for electrostatic latent image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10022889A JPH02279354A (en) | 1989-04-21 | 1989-04-21 | Forming method for electrostatic latent image |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02279354A true JPH02279354A (en) | 1990-11-15 |
Family
ID=14268425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10022889A Pending JPH02279354A (en) | 1989-04-21 | 1989-04-21 | Forming method for electrostatic latent image |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02279354A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5748749A (en) * | 1980-09-08 | 1982-03-20 | Konishiroku Photo Ind Co Ltd | Electrostatic recorder |
| JPS63205247A (en) * | 1987-02-20 | 1988-08-24 | Fuji Xerox Co Ltd | Ion current control type recording apparatus |
-
1989
- 1989-04-21 JP JP10022889A patent/JPH02279354A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5748749A (en) * | 1980-09-08 | 1982-03-20 | Konishiroku Photo Ind Co Ltd | Electrostatic recorder |
| JPS63205247A (en) * | 1987-02-20 | 1988-08-24 | Fuji Xerox Co Ltd | Ion current control type recording apparatus |
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