JPH024900B2 - - Google Patents
Info
- Publication number
- JPH024900B2 JPH024900B2 JP551281A JP551281A JPH024900B2 JP H024900 B2 JPH024900 B2 JP H024900B2 JP 551281 A JP551281 A JP 551281A JP 551281 A JP551281 A JP 551281A JP H024900 B2 JPH024900 B2 JP H024900B2
- Authority
- JP
- Japan
- Prior art keywords
- toner
- photoreceptor
- layer
- insulating layer
- image
- 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 - Lifetime
Links
- 108091008695 photoreceptors Proteins 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 16
- 239000000758 substrate Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000052 poly(p-xylylene) Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920002160 Celluloid Polymers 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- -1 polyethylene terephthalate Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000007738 vacuum evaporation Methods 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
- G03G15/34—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 powder image is formed directly on the recording material, e.g. by using a liquid toner
- G03G15/344—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 powder image is formed directly on the recording material, e.g. by using a liquid toner by selectively transferring the powder to the recording medium, e.g. by using a LED array
Description
【発明の詳細な説明】
本発明は画像形成法、特には光導電層の表面電
位によりトナーの帯電量を制御して光導電層に投
影される画像を可視化する方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image forming method, and particularly to a method for visualizing an image projected onto a photoconductive layer by controlling the amount of charge of a toner by the surface potential of the photoconductive layer.
従来、画像形成法としては種々のものが知られ
ている。電子写真による画像形成について云え
ば、その最も一般的な電子写真プロセスは、帯電
し、画像露光を行なつて静電像を形成するプロセ
スである。 Conventionally, various image forming methods are known. Regarding electrophotographic image formation, the most common electrophotographic process is one in which an electrostatic image is formed by charging and imagewise exposure.
静電像は、一般にコロナ放電により感光体表面
を帯電し、次いで画像露光により露光部の帯電電
荷を選択的に消失させて形成されるものである。
この静電像は、該静電像に対して反対極性の電荷
に帯電されているトナーで現像され、転写紙に転
写される。このような電子写真プロセスにおいて
は、コロナ帯電を行うためのワイヤーやシールド
ケース、また、コロナ放電を生ぜしめるための高
電圧を必要とするため、装置のコンパクト化が困
難であることが指適される。 An electrostatic image is generally formed by charging the surface of a photoreceptor by corona discharge, and then selectively dissipating the charges in the exposed areas by imagewise exposure.
This electrostatic image is developed with toner charged with a polarity opposite to that of the electrostatic image, and is transferred onto transfer paper. This type of electrophotographic process requires wires and shielding cases to perform corona charging, as well as high voltage to generate corona discharge, so it is difficult to make the equipment compact. .
これに対して画像形成法として装置のコンパク
ト化が容易なものも提案されている。その代表的
なものとして、特開昭48−68238号公報、特開昭
51−150342号公報、特開昭53−1027号公報、特開
昭54−61534号公報、および特開昭54−61537号公
報などに開示されている。これらの方法はコロナ
帯電を必要としないで荷電トナーによる現像が可
能な電位像を形成できるものである。即ち、電極
が設けられている光導電層に電圧を印加して画像
露光を行なうことにより、印加されている電圧に
ついて露光部と未露光部とにおいて分配電圧の差
を生ぜじめることによつて電位像を形成するもの
である。しかし、上記の方法で使用する感光体
は、必要とする画像分解能に対応する細かさで、
導電性電極を作成しなければならないため、感光
体の製造が極めて難かしい。 On the other hand, image forming methods have also been proposed that allow the apparatus to be made more compact. Representative examples include JP-A No. 48-68238 and JP-A-Sho.
It is disclosed in JP-A-51-150342, JP-A-53-1027, JP-A-54-61534, and JP-A-54-61537. These methods can form potential images that can be developed with charged toner without requiring corona charging. That is, by applying a voltage to a photoconductive layer provided with electrodes to perform image exposure, a difference is created in the voltage distribution between exposed and unexposed areas with respect to the applied voltage. It is used to form a potential image. However, the photoreceptor used in the above method has a fineness that corresponds to the required image resolution.
The photoreceptor is extremely difficult to manufacture because conductive electrodes must be created.
本発明の目的は、コロナ帯電が不必要で、しか
も構成の簡単な感光体を使つた画像形成法を提供
することにある。 An object of the present invention is to provide an image forming method using a photoreceptor that does not require corona charging and has a simple structure.
他の目的は、解像力の高い画像形成法を提供す
ることにある。 Another object is to provide an image forming method with high resolution.
上記目的を達成する本発明の画像形成法は、透
光性導電層と光導電層と絶縁層とを順次設けた感
光体を用い、この感光体の絶縁層側に、磁力によ
り搬送した導電性磁性トナーを供給しながら、ト
ナーを透光性導電層との間に電圧を印加しつつ光
導電層を露光することで、明部においては絶縁層
を挟んで光導電層とトナーとの間に逆極性の電荷
対を形成し、磁力によるトナーの搬送力に打勝つ
てトナーを感光体表面に静電力で吸着し、一方、
暗部においては上記露光の後に、磁力により絶縁
層表面からトナーを除去することで、感光体上に
露光明部にトナー付着させ画像を形成するもので
ある。 The image forming method of the present invention that achieves the above object uses a photoreceptor in which a light-transmitting conductive layer, a photoconductive layer, and an insulating layer are sequentially provided, and a conductive layer transported by magnetic force is attached to the insulating layer side of the photoreceptor. By exposing the photoconductive layer to light while supplying magnetic toner and applying a voltage between the toner and the transparent conductive layer, in the bright areas, the insulating layer is sandwiched between the photoconductive layer and the toner. A pair of charges with opposite polarities is formed, and the toner is attracted to the surface of the photoreceptor by electrostatic force, overcoming the toner transport force caused by the magnetic force.
In the dark areas, after the exposure, the toner is removed from the surface of the insulating layer by magnetic force, and the toner is adhered to the exposed bright areas on the photoreceptor to form an image.
次に、図面を参照しながら本発明に係る画像形
成法について説明する。 Next, an image forming method according to the present invention will be explained with reference to the drawings.
本発明に適用する感光体は、第１図に模式断面
図で示すように透明基体１上に透明な導電層であ
る電極層２、その上に光導電層３及び絶縁層４で
構成されている。透明基体１は、通常のガラス、
セルロイド等光学的に透明なものであれば何でも
良い。 As shown in a schematic cross-sectional view in FIG. 1, the photoreceptor to which the present invention is applied is composed of an electrode layer 2, which is a transparent conductive layer, on a transparent substrate 1, and a photoconductive layer 3 and an insulating layer 4 thereon. There is. The transparent substrate 1 is made of ordinary glass,
Any optically transparent material such as celluloid may be used.
透明電極層２はIn2O3あるいはSnO2等のスパツ
タ膜が用いられ、必要な伝導度、光学的透明度に
よつて膜厚が決められる。本発明においては100
Å〜1μ程度の膜厚にする。 A sputtered film of In 2 O 3 or SnO 2 is used for the transparent electrode layer 2, and the film thickness is determined depending on the required conductivity and optical transparency. In the present invention, 100
Make the film thickness about Å to 1μ.
光導電層３はSe、ZnO、CdS、非晶質Si等の光
導電性物質の蒸着膜あるいはバインダー結着膜が
用いられ、1μ〜100μ程度の膜厚にする。絶縁層
４は、絶縁層の物質なら何でも良く、ポリエチレ
ン・テレフタレイトフイルム、パリレン等の有機
絶縁膜、SiO2等の酸化絶縁膜等が用いられる。
膜厚は100Å〜10μとし、光導電物質の特性にあ
わせ適時選択される。 The photoconductive layer 3 is a vapor-deposited film of a photoconductive substance such as Se, ZnO, CdS, or amorphous Si, or a binder binding film, and has a thickness of about 1 μm to 100 μm. The insulating layer 4 may be made of any material as long as it is an insulating layer, and examples include polyethylene terephthalate film, organic insulating films such as parylene, and oxide insulating films such as SiO 2 .
The film thickness is 100 Å to 10 μ and is appropriately selected depending on the characteristics of the photoconductive material.
第２図に画像形成法の原理を示す。前記感光体
５の上に導電磁性トナー１０を付着させた磁石１
１を近づけ、透明電極層２と磁石１１の間に電圧
を加える。このときの磁石１１と感光体５との距
離は10μ〜５mm（のぞましくは50μ〜１mm）程度
にする。 FIG. 2 shows the principle of the image forming method. A magnet 1 on which electroconductive toner 10 is attached on the photoreceptor 5
1 are brought close together and a voltage is applied between the transparent electrode layer 2 and the magnet 11. At this time, the distance between the magnet 11 and the photoreceptor 5 is set to about 10 μm to 5 mm (preferably 50 μm to 1 mm).
また印加する電圧は1V〜1000V（のぞましくは
10V〜100V）程度の電圧を加える。 The voltage to be applied is 1V to 1000V (preferably
Apply a voltage of about 10V to 100V).
また用いる導電磁性トナーは、鉄粉等の導体で
かつ透磁性のある粉末と樹脂、及びカーボンブラ
ツク等の着色剤をねりあわせ、ボールミル等によ
り粉砕することにより数μ〜数10μの粉末を得る
ことにより作成する。導電性は体積抵抗が1013Ω
cm以下になるようにする。この状態で透明基体１
側より露光すると、画像の照射部では光導電層の
抵抗が低下し、電荷が絶縁層の下まで注入する。
この時の露光は、可視光、赤外光、紫外光などで
行なう。この状態で磁石と感光体とには強い電界
が加わり、そのため、導電磁性トナーに反対極性
の電荷が注入し、その電荷が感光体表面上のトナ
ーにまで移つて行く。その結果、絶縁層をはさん
で帯電したトナーと透明電極より注入した電荷と
が図のように逆極性の電荷対を形成することで引
き合つた状態となり、この後、磁石を感光体より
遠ざけてもこの状態のトナーのみは絶縁層表面に
とどまつている。一方、非照射部では、光導電層
表面への電荷の注入がないため、磁石と感光体表
面の間の電界は小さく、トナーへの電荷の注入は
少ない。また帯電したトナーと透明電極上の異極
性の電荷との距離が長いため両者の引き合う力が
弱い。そのため磁石を感光体より引き離すとトナ
ーは感光体よりはなれる。 The electroconductive toner used can be obtained by mixing a conductive and magnetically permeable powder such as iron powder, a resin, and a coloring agent such as carbon black, and grinding the mixture with a ball mill or the like to obtain a powder with a size of several microns to several tens of microns. Created by Conductivity has a volume resistance of 10 13 Ω
Make it less than cm. In this state, transparent substrate 1
When exposed from the side, the resistance of the photoconductive layer decreases in the irradiated area of the image, and charges are injected below the insulating layer.
Exposure at this time is performed using visible light, infrared light, ultraviolet light, or the like. In this state, a strong electric field is applied to the magnet and the photoreceptor, so that charges of opposite polarity are injected into the electroconductive toner, and the charges are transferred to the toner on the surface of the photoreceptor. As a result, the toner charged across the insulating layer and the charge injected from the transparent electrode become attracted to each other by forming a charge pair of opposite polarity as shown in the figure, and after this, the magnet is moved away from the photoreceptor. However, only the toner in this state remains on the surface of the insulating layer. On the other hand, in the non-irradiated area, since no charge is injected to the surface of the photoconductive layer, the electric field between the magnet and the surface of the photoreceptor is small, and little charge is injected into the toner. Furthermore, since the distance between the charged toner and the charges of different polarities on the transparent electrode is long, the force of attraction between the two is weak. Therefore, when the magnet is pulled away from the photoreceptor, the toner is released from the photoreceptor.
上記のようにして絶縁層の存在により画像情報
とネガポジを反転したトナー像が感光体上に形成
される。 As described above, due to the presence of the insulating layer, a toner image in which the image information and the negative and positive are reversed is formed on the photoreceptor.
このトナー像を紙に転写し、定着することによ
り、紙上に画像を固定できる。 By transferring this toner image to paper and fixing it, the image can be fixed on the paper.
次に本発明の実施例を示す。 Next, examples of the present invention will be shown.
第３図本発明の実施例の一形態である。 FIG. 3 is one form of an embodiment of the present invention.
透明なガラス上にスパツタリング法により約
1000ÅのIn2O3の透明膜を形成した。 Approx. by sputtering method on transparent glass
A transparent film of In 2 O 3 with a thickness of 1000 Å was formed.
その上に真空蒸着法により約30μの非晶質Seを
形成した。その上にパリレン層を約5000Å形成
し、感光体を作成した。 Approximately 30 μm of amorphous Se was formed thereon by vacuum evaporation. A parylene layer of about 5000 Å was formed thereon to produce a photoreceptor.
このようにして作成した感光体上に第３図のご
とく、磁気ブラシ３０を配置し導電性磁性トナー
１０を感光体上に接触させた。磁気ブラシ３０は
磁気ローラ２１を固定し、スリーブ２０を回転し
てトナー供給箱２２より新しいトナーを感光体表
面へ供給する。もちろん、磁気ローラを回転し、
スリーブを固定して供給しても良い。スリーブ２
０と透明電極２との間に電圧＋100Vを印加し、
透明基体より画像を照射した。照射光の強度は照
射部で1001ux、非照射部で0.11uxであつた。 As shown in FIG. 3, a magnetic brush 30 was placed on the thus prepared photoreceptor, and the conductive magnetic toner 10 was brought into contact with the photoreceptor. The magnetic brush 30 fixes the magnetic roller 21 and rotates the sleeve 20 to supply fresh toner from the toner supply box 22 to the surface of the photoreceptor. Of course, rotate the magnetic roller,
The sleeve may be fixed and supplied. sleeve 2
Apply voltage +100V between 0 and transparent electrode 2,
An image was irradiated through a transparent substrate. The intensity of the irradiated light was 1001ux in the irradiated area and 0.11ux in the non-irradiated area.
この状態で磁気ブラシを感光体の表面上を100
cm／secの速度で移動させた。移動後の感光体表
面上に画像とネガ・ポジ反転したトナー像が形成
されていた。 In this state, move the magnetic brush 100 times over the surface of the photoreceptor.
It was moved at a speed of cm/sec. After the movement, a toner image that was a negative/positive inversion of the image was formed on the surface of the photoreceptor.
第１図は、本発明に適用する感光体の模式断面
図。第２図は、本発明に係る画像形成法の原理を
示す説明図。第３図は、本発明に係る画像形成法
の実施例を示す説明図。
２……透明電極層、３……光導電層、４……絶
縁層、５……感光体、１０……導電磁性トナー、
１１……磁石、２１……磁気ローラ。
FIG. 1 is a schematic cross-sectional view of a photoreceptor applied to the present invention. FIG. 2 is an explanatory diagram showing the principle of the image forming method according to the present invention. FIG. 3 is an explanatory diagram showing an embodiment of the image forming method according to the present invention. 2...Transparent electrode layer, 3...Photoconductive layer, 4...Insulating layer, 5...Photoreceptor, 10...Electroconductive toner,
11... Magnet, 21... Magnetic roller.
Claims (1)
けた感光体を用い、この感光体の絶縁層側に、磁
力により搬送した導電性磁性トナーを供給しなが
ら、トナーと透光性導電層との間に電圧を印加し
つつ光導電層を露光することで、明部においては
絶縁層を挟んで光導電層とトナーとの間に逆極性
の電荷対を形成し、磁力によるトナーの搬送力に
打勝つてトナーを感光体表面に静電力で吸着し、
一方、暗部においては上記露光の後に、磁力によ
り絶縁層表面からトナーを除去することで、感光
体上に露光明部にトナーを付着させ画像を形成す
ることを特徴とする画像形成法。1 Using a photoconductor in which a translucent conductive layer, a photoconductive layer, and an insulating layer are sequentially provided, conductive magnetic toner transported by magnetic force is supplied to the insulating layer side of the photoconductor, and the toner and translucent By exposing the photoconductive layer to light while applying a voltage between it and the conductive layer, a pair of charges of opposite polarity is formed between the photoconductive layer and the toner with an insulating layer in between in bright areas, and the toner is absorbed by the magnetic force. The toner is absorbed onto the surface of the photoreceptor by electrostatic force, overcoming the conveying force of
On the other hand, the image forming method is characterized in that in the dark areas, after the exposure, the toner is removed from the surface of the insulating layer by magnetic force, thereby causing the toner to adhere to the exposed bright areas on the photoconductor to form an image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP551281A JPS57119375A (en) | 1981-01-16 | 1981-01-16 | Image formation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP551281A JPS57119375A (en) | 1981-01-16 | 1981-01-16 | Image formation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57119375A JPS57119375A (en) | 1982-07-24 |
| JPH024900B2 true JPH024900B2 (en) | 1990-01-30 |
Family
ID=11613238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP551281A Granted JPS57119375A (en) | 1981-01-16 | 1981-01-16 | Image formation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57119375A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS603652A (en) * | 1983-06-22 | 1985-01-10 | Fuji Xerox Co Ltd | Image forming method |
| JPS61256358A (en) * | 1985-05-10 | 1986-11-13 | Seikosha Co Ltd | Electrophotographic recording method |
| JPH0652438B2 (en) * | 1986-02-08 | 1994-07-06 | 富士通株式会社 | Image forming device |
| JP2677729B2 (en) * | 1991-12-03 | 1997-11-17 | シャープ株式会社 | Image forming method |
-
1981
- 1981-01-16 JP JP551281A patent/JPS57119375A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57119375A (en) | 1982-07-24 |
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