JP2820226B2 - How to copy electrostatic charge information - Google Patents
How to copy electrostatic charge informationInfo
- Publication number
- JP2820226B2 JP2820226B2 JP31149289A JP31149289A JP2820226B2 JP 2820226 B2 JP2820226 B2 JP 2820226B2 JP 31149289 A JP31149289 A JP 31149289A JP 31149289 A JP31149289 A JP 31149289A JP 2820226 B2 JP2820226 B2 JP 2820226B2
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- JP
- Japan
- Prior art keywords
- charge holding
- holding medium
- charge
- copying
- medium
- 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.)
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- Electrophotography Using Other Than Carlson'S Method (AREA)
- Combination Of More Than One Step In Electrophotography (AREA)
- Photoreceptors In Electrophotography (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は導電性層上に絶縁性層を形成した電荷保持媒
体上に形成された静電荷情報の複写方法に関するもので
ある。Description: BACKGROUND OF THE INVENTION The present invention relates to a method for copying electrostatic charge information formed on a charge storage medium having an insulating layer formed on a conductive layer.
一般に、電極と光導電層を積層し、暗所で光導電層上
に全面コロナ帯電させ、次いで強い光で露光して光の当
たった部位の光導電層を導電性にし、その部位の電荷を
リークさせて除去することにより静電荷像を光導電層の
面上に光学的に形成し、残留電荷と逆極性の電荷または
同極性の電荷を有するトナーを付着させて現像すること
により、静電荷像を複写することが行われている。In general, an electrode and a photoconductive layer are laminated, and the entire surface of the photoconductive layer is corona-charged in a dark place, and then exposed to strong light to make the photoconductive layer exposed to light conductive. An electrostatic charge image is formed optically on the surface of the photoconductive layer by leaking and removing the toner, and a toner having a charge of the opposite polarity or a charge of the same polarity as the residual charge is adhered and developed to form an electrostatic charge image. Duplicating images has been done.
このような電子写真技術は、一般に低感度のため撮影
用としては使用できず、静電荷の保持時間が短いために
静電潜像形成後、ただちにトナー現像するのが普通であ
る。In general, such an electrophotographic technique cannot be used for photographing due to low sensitivity, and toner development is usually performed immediately after an electrostatic latent image is formed due to a short electrostatic charge retention time.
これに対して、本出願人は電極上に光導電層を積層し
た感光体と、電極上に絶縁層を積層した電荷保持媒体と
を対向させ、両電極に電圧を印加し状態で画像露光する
ことにより、電荷保持媒体上に極めて高解像の静電荷像
を記録し、かつ静電荷像の保持時間を極めて長くするこ
とができる電圧印加露光による画像記録方法を開発し
た。この静電荷像の複写を従来のようにトナー現像によ
り行うとすると、複写ごとに画像露光する必要があり、
操作が面倒になってしまうという問題がある。電荷保持
媒体は電荷保持時間が極めて長いので、電荷保持媒体自
体を一つの情報媒体として利用可能であり、そのため電
荷保持媒体上の静電荷像情報をそのまま複写できること
が望まれていた。On the other hand, the applicant of the present invention opposes a photoconductor having a photoconductive layer laminated on an electrode and a charge holding medium having an insulating layer laminated on the electrode, and performs image exposure in a state where a voltage is applied to both electrodes. As a result, an image recording method by voltage application exposure that can record an extremely high-resolution electrostatic charge image on the charge holding medium and extremely lengthen the electrostatic charge image holding time has been developed. If this electrostatic charge image is copied by toner development as in the past, it is necessary to perform image exposure for each copy,
There is a problem that operation becomes troublesome. Since the charge holding medium has an extremely long charge holding time, the charge holding medium itself can be used as one information medium, and therefore, it has been desired that the electrostatic charge image information on the charge holding medium can be copied as it is.
本発明は上記課題を解決するためのものであり、電荷
保持媒体上に形成された静電荷像情報をトナー現像によ
ることなく、多数回他の電荷保持媒体に複写することが
でき、電荷保持媒体の情報媒体としての一層の活用を図
ることができる静電荷情報の複写方法を提供することを
目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and can copy electrostatic image information formed on a charge holding medium many times to another charge holding medium without using toner development. It is an object of the present invention to provide a method for copying electrostatic charge information that can be further utilized as an information medium.
本発明は、静電荷情報を記録したマスター電荷保持媒
体と、複写用電荷保持媒体とを対向配置して電圧を印加
し、放電を生じさせることによりマスター電荷保持媒体
上の静電荷情報を複写用電荷保持媒体上に反転複写する
ことを特徴とするものである。According to the present invention, the master charge holding medium on which the electrostatic charge information is recorded and the charge holding medium for copying are arranged facing each other, a voltage is applied, and a discharge is caused to copy the electrostatic charge information on the master charge holding medium for copying. It is characterized by performing reverse copying on a charge holding medium.
第１図は本発明における画像露光方法および複写方法
を説明するための図、第２図は等価回路を示す図であ
る。図中、１は感光体、1aはガラス基板、1bは透明電
極、1cは光導電層、２はマスター電荷保持媒体、2aは絶
縁層、2bは透明電極、2cは支持体、Ｅは電源、３は複写
用電荷保持媒体、3aは絶縁層、3bは電極、3cは支持体で
ある。FIG. 1 is a diagram for explaining an image exposure method and a copying method according to the present invention, and FIG. 2 is a diagram showing an equivalent circuit. In the figure, 1 is a photoreceptor, 1a is a glass substrate, 1b is a transparent electrode, 1c is a photoconductive layer, 2 is a master charge holding medium, 2a is an insulating layer, 2b is a transparent electrode, 2c is a support, E is a power source, Reference numeral 3 denotes a charge holding medium for copying, 3a denotes an insulating layer, 3b denotes an electrode, and 3c denotes a support.
第１図（ａ）において、感光体１は1mm程度の厚みを
有するガラス基板1aに1000Å厚みのITOからなる透明電
極1bを形成し、その上に厚み10μｍ程度の光導電層を形
成したものであり、光が当たったところは導電性となる
ものである。この感光体に対向して10μｍ程の間隙を設
けて配置されるマスター電荷保持媒体２は、厚み100μ
ｍ程度の支持体2c上に透明電極2bを形成し、透明電極上
に絶縁層2aを３〜10μｍ厚で形成したものである。In FIG. 1 (a), a photoreceptor 1 has a glass substrate 1a having a thickness of about 1 mm, a transparent electrode 1b made of ITO having a thickness of 1000 mm, and a photoconductive layer having a thickness of about 10 μm formed thereon. In some cases, the area where light is applied becomes conductive. The master charge holding medium 2 arranged with a gap of about 10 μm opposed to the photoreceptor has a thickness of 100 μm.
A transparent electrode 2b is formed on a support 2c having a thickness of about m, and an insulating layer 2a is formed with a thickness of 3 to 10 μm on the transparent electrode.
このような感光体とマスター電荷保持媒体２とを対向
配置して画像露光すると、光の照射された領域は感光体
が導電性となって感光体と電荷保持媒体との間隙に大き
な電圧が加わって放電が起こり、一方、光の照射されな
い領域では感光体が絶縁性のままであるので、感光体と
電荷保持媒体との間隙には放電破壊電圧を越える電圧が
加わらないため放電が起こらず、絶縁層2a上には画像に
応じた静電荷パターン情報が形成される。When such a photoconductor and the master charge holding medium 2 are arranged to face each other and the image is exposed, the region irradiated with the light becomes conductive and a large voltage is applied to the gap between the photoconductor and the charge holding medium. On the other hand, in a region where light is not irradiated, the photoconductor remains insulative, so that a voltage exceeding the discharge breakdown voltage is not applied to the gap between the photoconductor and the charge holding medium, so that no discharge occurs, Electrostatic charge pattern information corresponding to an image is formed on the insulating layer 2a.
次に、静電荷情報を形成した電荷保持媒体２をマスタ
ーとして、第１図（ｂ）に示すように、マスターと同様
な構成の複写用の電荷保持媒体３を対向配置し、両方の
電極2b、3b間に電源Ｅにより所定の電圧を印加して放電
を生じさせる。この状態を等価回路で表すと第２図のよ
うになる。Next, as shown in FIG. 1 (b), a charge holding medium 3 for copying having the same configuration as that of the master is disposed facing the charge holding medium 2 on which the electrostatic charge information is formed, and both electrodes 2b are formed. , 3b, a predetermined voltage is applied by the power supply E to cause discharge. FIG. 2 shows this state as an equivalent circuit.
第２図において、C1はマスター電荷保持媒体の静電容
量、C2は複写用電荷保持媒体の静電容量、Caは間隙の静
電容量、Vapは電源電圧である。Vaを間隙の放電破壊電
圧、第１図（ａ）における電圧印加露光によりマスター
電荷保持媒体に電荷を形成したときの電位がV0、第１図
（ｂ）における放電複写によりマスター電荷保持媒体の
電位がV1′、複写用電荷保持媒体の電位がV2′になった
とすると、放電により電源からマスター保持媒体に供給
された電荷は、間隙および複写用電荷保持媒体上に蓄積
される電荷量に等しいので、各電荷保持媒体の対向部位
ごとに次式が成立する。In FIG. 2, C1 is the capacitance of the master charge holding medium, C2 is the capacitance of the copy charge holding medium, Ca is the gap capacitance, and Vap is the power supply voltage. Va is the discharge breakdown voltage of the gap, the potential when a charge is formed on the master charge holding medium by voltage application exposure in FIG. 1 (a) is V0, and the potential of the master charge holding medium by discharge copying in FIG. 1 (b). Is V1 'and the potential of the copy charge holding medium is V2', the charge supplied from the power supply to the master holding medium by the discharge is equal to the gap and the amount of charge stored on the copy charge holding medium. The following equation holds for each opposing portion of each charge holding medium.
V1′＋Va＋V2′＝Vap …（１） C1V1′−C2V2′＝C1V0 …（２） （１）、（２）式を解くと、 となる。また空気層の上下には ±Qa＝±CaVa の電荷が帯電しており、また電荷保持媒体上にはそれぞ
れ Q1′＝C1V1′ Q2′＝C2V2′ が帯電している。電荷保持媒体を引き離すとき、空気層
に帯電している正負の電荷はそれぞれ近い方に引き寄せ
られ、結果として電荷保持媒体上には、 Q1＝Q1′−Qa＝C1V1′−CaVa Q2＝Q2′−Qa＝−C2V2′−CaVa が帯電することになる。このときの電荷保持媒体２、３
の電位をそれぞれV1、V2とすると、 となる。そこで、転写前のマスター電荷保持媒体の電位
に対する転写後の各電荷保持媒体の電位V1、V2をグラフ
化すると第３図に示すようになる。V1 '+ Va + V2' = Vap (1) C1V1'-C2V2 '= C1V0 (2) By solving equations (1) and (2), Becomes The charge of ± Qa = ± CaVa is charged above and below the air layer, and Q1 ′ = C1V1 ′ Q2 ′ = C2V2 ′ is charged on the charge holding medium, respectively. When the charge holding medium is separated, the positive and negative charges charged in the air layer are attracted closer to each other. As a result, on the charge holding medium, Q1 = Q1'-Qa = C1V1'-CaVa Q2 = Q2'- Qa = -C2V2'-CaVa is charged. At this time, the charge holding media 2, 3
Let V1 and V2 be the potentials of Becomes FIG. 3 is a graph showing the potentials V1 and V2 of each charge holding medium after transfer with respect to the potential of the master charge holding medium before transfer.
第３図において、右上がりの直線は（３）式、右下が
りの直線は（４）式をグラフ化したものであり、Ａ、
Ａ′はVap＝800V、Ｂ、Ｂ′はVap＝700V、Ｃ、Ｃ′はVa
p＝650Vの場合、Ｄ、Ｄ′は放電が生じなかった場合、
また○、●は各直線に対応する実験値である。In FIG. 3, the straight line rising to the right is a graph of equation (3), and the straight line of the right is a graph of equation (4).
A 'is Vap = 800V, B and B' are Vap = 700V, C and C 'are Va
In the case of p = 650V, D, D '
In addition, ○ and ● are experimental values corresponding to each straight line.
図から分かるように、転写前の電位に対して転写後の
複写電荷保持媒体の電位V2は低くなる。すなわち、マス
ター電荷保持媒体の電位の大きい領域に対向する複写用
電荷保持媒体の領域では、電位が低くなり、一方、マス
ター電荷保持媒体の電位の小さい領域に対向する複写用
電荷保持媒体の領域では、電位が高くなる。したがって
複写用電荷保持媒体にはマスター電荷保持媒体の静電荷
像のネガ像が複写されることになる。As can be seen from the figure, the potential V2 of the copy charge holding medium after transfer is lower than the potential before transfer. That is, in the region of the charge holding medium for copying opposite to the region where the potential of the master charge holding medium is high, the potential is low, while in the region of the charge holding medium for copying facing the region where the potential of the master charge holding medium is low. , The potential increases. Therefore, a negative image of the electrostatic charge image of the master charge holding medium is copied onto the copy charge holding medium.
また、露光量に対するマスター電荷保持媒体の電位V
0、及び各電位における転写後の電位V1、V2の関係は第
４図に示すようになる。ただし、V2は極性を変えて絶対
値表示している。Also, the potential V of the master charge holding medium with respect to the exposure amount
The relationship between 0 and the potentials V1 and V2 after transfer at each potential is as shown in FIG. However, V2 is displayed in absolute value by changing the polarity.
転写前の電位V0の曲線の最大値と最小値との差、すな
わちコントラストに対して、転写後の電V1の曲線の最大
値と最小値との差、すなわちマスター電荷保持媒体のコ
ントラストが低下しており、複写を繰り返すことにより
像が変化してしまうことを示している。この変化度合は
（３）式から分かるように、C1/（C1＋C2）となるの
で、C1をC2より大きくすることによりコントラストの低
下の程度を小さくすることができ、C1をC2より十分に大
きくすることにより、殆ど低下しないようにすることが
可能であり、その結果多数回複写をとることが可能とな
る。The difference between the maximum value and the minimum value of the curve of the potential V0 before transfer, that is, the contrast, the difference between the maximum value and the minimum value of the curve of the potential V1 after transfer, that is, the contrast of the master charge holding medium decreases. This indicates that the image changes when copying is repeated. Since the degree of change is C1 / (C1 + C2), as can be seen from equation (3), the degree of reduction in contrast can be reduced by making C1 larger than C2, and C1 is made sufficiently larger than C2. As a result, it is possible to hardly decrease the temperature, and as a result, it is possible to make many copies.
本発明は、静電荷情報を記録したマスター電荷保持媒
体と、複写用の電荷保持媒体とを対向配置し、両電荷保
持媒体の電極間に電圧を印加して放電を生じさせること
により、複写用電荷保持媒体上に静電荷情報を反転複写
することができ、またマスター電荷保持媒体の静電容量
を複写用電荷保持媒体の静電容量よりも十分大きくする
ことにより、マスター電荷保持媒体のコントラスト低下
を抑えて何回でも複写を行うことが可能となる。According to the present invention, a master charge holding medium on which electrostatic charge information is recorded, and a charge holding medium for copying are arranged to face each other, and a voltage is applied between the electrodes of both charge holding media to generate a discharge, so that a charge holding medium for copying is formed. The electrostatic charge information can be reversely copied on the charge holding medium, and the contrast of the master charge holding medium is reduced by making the capacitance of the master charge holding medium sufficiently larger than that of the charge holding medium for copying. Can be repeated as many times as possible.
以下、実施例を説明する。 Hereinafter, examples will be described.
〔実施例１〕 ふっ素樹脂（旭硝子社製、商品名サイトップ）の旭硝
子社製ふっ素系溶媒7wt％溶媒を、ITO電極を蒸着したガ
ラス基板上にスピンコーターを用いて1500rpmで塗布し
た。150℃で約1hr乾燥し、膜厚2.6μｍのサイトップ薄
膜を得た。[Example 1] A 7 wt% fluorinated solvent manufactured by Asahi Glass Co., Ltd. of a fluororesin (manufactured by Asahi Glass Co., Ltd., trade name) was applied onto a glass substrate on which an ITO electrode was deposited at 1500 rpm using a spin coater. After drying at 150 ° C. for about 1 hour, a Cytop thin film having a thickness of 2.6 μm was obtained.
〔実施例２〕 実施例１で得られた媒体と透明電極上に積層された有
機光導電材料とを対向させ、９μｍのポリエステルフィ
ルムをスペーサーに用い、空隙を介して配置する。次い
で光導電材料の透明電極側から像を投影し、両電極間に
700Vを0.1sec印加して像露光を行い、媒体上に静電潜像
を形成した。その後、静電潜像を形成した媒体Ｉを実施
例１に示した別の媒体IIと対向させ、９μｍのポリエス
テルフィルムをスペーサーに用い、空隙を介して配置す
る。両電極間に800Vの電圧を印加して放電を生じさせる
ことにより媒体II上に媒体Ｉの静電潜像を反転した静電
潜像を形成することができた。[Example 2] The medium obtained in Example 1 and the organic photoconductive material laminated on the transparent electrode are opposed to each other, and a 9 µm polyester film is used as a spacer, and is arranged with a gap. Next, an image is projected from the transparent electrode side of the photoconductive material, and between the two electrodes.
Image exposure was performed by applying 700 V for 0.1 sec to form an electrostatic latent image on the medium. Thereafter, the medium I on which the electrostatic latent image is formed is opposed to another medium II shown in Example 1, and a 9 μm polyester film is used as a spacer and is arranged via a gap. By applying a voltage of 800 V between the two electrodes to generate a discharge, an electrostatic latent image of the medium I was inverted on the medium II.
以上のように本発明によれば、マスター電荷保持媒体
と、複写用の電荷保持媒体とを対向させて放電を生じさ
せることにより、複写用電荷保持媒体上に静電荷情報を
反転複写することができ、このときマスター電荷保持媒
体の静電容量を複写用電荷保持媒体の静電容量よりも十
分大きくすることにより、マスター電荷保持媒体のコン
トラスト低下を抑えて何回でも複写を行うことが可能と
なる。したがって、従来のようにトナー現像により複写
する必要がなく、電荷保持媒体自体の情報媒体としての
機能を一層向上させることが可能となる。As described above, according to the present invention, the master charge holding medium and the charge holding medium for copying are caused to face each other to generate a discharge, whereby the electrostatic charge information can be reversely copied on the charge holding medium for copying. At this time, by making the capacitance of the master charge holding medium sufficiently larger than the capacitance of the charge holding medium for copying, it is possible to perform copying any number of times while suppressing a decrease in contrast of the master charge holding medium. Become. Therefore, there is no need to perform copying by toner development as in the related art, and the function of the charge holding medium itself as an information medium can be further improved.
第１図は本発明における画像露光方法および複写方法を
説明するための図、第２図は等価回路を示す図、第３図
は転写前の電位と転写後の電位との関係を示す図、第４
図は露光量と転写前の電位と転写後の電位の関係を示す
図である。 １……感光体、1a……ガラス基板、1b……透明電極、1c
……光導電層、２……マスター電荷保持媒体、2a……絶
縁層、2b……透明電極、2c……支持体、Ｅ……電源、３
……複写用電荷保持媒体、3a……絶縁層、3b……電極、
3c……支持体。FIG. 1 is a view for explaining an image exposure method and a copying method in the present invention, FIG. 2 is a view showing an equivalent circuit, FIG. 3 is a view showing a relationship between a potential before transfer and a potential after transfer, 4th
The figure shows the relationship between the exposure amount, the potential before transfer, and the potential after transfer. 1 photoconductor, 1a glass substrate, 1b transparent electrode, 1c
... Photoconductive layer, 2 ... Master charge holding medium, 2a ... Insulating layer, 2b ... Transparent electrode, 2c ... Support, E ... Power supply, 3
…… Charge holding medium for copying, 3a …… Insulating layer, 3b …… Electrode,
3c …… Support.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭52−53763（ＪＰ，Ａ) 特開 昭48−87846（ＪＰ，Ａ) 特開 昭54−149633（ＪＰ，Ａ) 特公 昭47−25389（ＪＰ，Ｂ２) (58)調査した分野(Int.Cl.6，ＤＢ名) G03G 13/18 G03G 15/18────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-52-53763 (JP, A) JP-A-48-87846 (JP, A) JP-A-54-149633 (JP, A) 25389 (JP, B2) (58) Field surveyed (Int. Cl. 6 , DB name) G03G 13/18 G03G 15/18
Claims (2)
層上に静電荷情報を形成したマスター電荷保持媒体と、
導電性層上に絶縁性層を積層した複写用電荷保持媒体と
を対向配置するとともに、両電荷保持媒体の導電性層間
に電圧を印加し、マスター電荷保持媒体の静電荷情報を
複写用電荷保持媒体上に反転複写することを特徴とする
静電荷情報の複写方法。A master charge holding medium in which an insulating layer is laminated on a conductive layer, and electrostatic charge information is formed on the insulating layer;
A charge holding medium for copying, in which an insulating layer is laminated on a conductive layer, is arranged oppositely, and a voltage is applied between the conductive layers of both charge holding media to hold electrostatic charge information of the master charge holding medium for charge holding for copying. A method for copying electrostatic charge information, comprising: performing reverse copying on a medium.
荷保持媒体の静電容量を複写用電荷保持媒体の静電容量
よりも大きくしたことを特徴とする静電荷情報の複写方
法。2. A method according to claim 1, wherein the electrostatic capacity of the master charge holding medium is larger than the electrostatic capacity of the charge holding medium for copying.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31149289A JP2820226B2 (en) | 1989-11-29 | 1989-11-29 | How to copy electrostatic charge information |
| US07/741,504 US5376955A (en) | 1989-11-29 | 1990-11-29 | Electrostatic charge information reproducing method with charge transfer by electrostatic discharge |
| EP90917541A EP0455828B1 (en) | 1989-11-29 | 1990-11-29 | Electrostatic copying method |
| DE69032950T DE69032950T2 (en) | 1989-11-29 | 1990-11-29 | Electrostatic charge information reproduction process |
| PCT/JP1990/001551 WO1991008522A1 (en) | 1989-11-29 | 1990-11-29 | Electrostatic copying method |
| DE69026246T DE69026246T2 (en) | 1989-11-29 | 1990-11-29 | ELECTROSTATIC COPYING PROCESS |
| EP95201117A EP0669562B1 (en) | 1989-11-29 | 1990-11-29 | Electrostatic charge information reproducing method |
| US08/304,784 US5739834A (en) | 1989-11-29 | 1994-09-12 | Electrostatic charge information reproducing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31149289A JP2820226B2 (en) | 1989-11-29 | 1989-11-29 | How to copy electrostatic charge information |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03170982A JPH03170982A (en) | 1991-07-24 |
| JP2820226B2 true JP2820226B2 (en) | 1998-11-05 |
Family
ID=18017884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31149289A Expired - Fee Related JP2820226B2 (en) | 1989-11-29 | 1989-11-29 | How to copy electrostatic charge information |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2820226B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69425184T2 (en) * | 1993-04-26 | 2001-03-22 | Dai Nippon Printing Co., Ltd. | Photoelectric sensor, recording system, and method for data recording and reprography |
-
1989
- 1989-11-29 JP JP31149289A patent/JP2820226B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03170982A (en) | 1991-07-24 |
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| LAPS | Cancellation because of no payment of annual fees |