JPH07295445A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPH07295445A JPH07295445A JP9100594A JP9100594A JPH07295445A JP H07295445 A JPH07295445 A JP H07295445A JP 9100594 A JP9100594 A JP 9100594A JP 9100594 A JP9100594 A JP 9100594A JP H07295445 A JPH07295445 A JP H07295445A
- Authority
- JP
- Japan
- Prior art keywords
- brush
- image forming
- image carrier
- image
- charging
- 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
Landscapes
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Brushes (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は電子写真プロセスに用い
たプリンタやファクシミリ、複写機等の画像形成装置に
関し、特に、画像担持体の汚れを防ぐ画像形成装置に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus used in an electrophotographic process such as a printer, a facsimile or a copying machine, and more particularly to an image forming apparatus which prevents an image carrier from being soiled.
【０００２】[0002]
【従来の技術】従来の、画像形成装置としては、帯電・
露光・現像を複数回繰り返して電子写真感光体（以下、
感光体という）上にトナー像を形成した後、トナー像を
記録用紙に一括転写して画像を得る電子写真装置があ
る。2. Description of the Related Art As a conventional image forming apparatus,
By repeating exposure and development multiple times, an electrophotographic photoreceptor (hereinafter,
There is an electrophotographic apparatus in which a toner image is formed on a photosensitive member and then the toner image is collectively transferred to a recording sheet to obtain an image.
【０００３】この種の電子写真装置の一例としは、先に
特開平１−２９７６９５号公報に開示されている装置が
ある。この電子写真装置は、図３及び図４に示すよう
に、Ｘ方向に回転する回転円筒状の感光体２１の周辺
に、感光体２１に近接して感光体表面感光層を一様に帯
電させる主帯電器２２と、静電潜像を形成するための画
像情報付与手段２３と、これを顕像化するための現像器
２４と、顕像を転写材に転写させるための転写帯電器２
５と、転写材を感光体２１から分離する分離手段２６
と、クリーニング装置２７と、主除電光源２９とが配置
してある。As an example of this type of electrophotographic apparatus, there is an apparatus previously disclosed in Japanese Patent Laid-Open No. 1-297695. In this electrophotographic apparatus, as shown in FIGS. 3 and 4, the photosensitive layer on the surface of the photoconductor 21 is uniformly charged in the vicinity of the photoconductor 21 having a rotating cylindrical shape that rotates in the X direction. A main charger 22, an image information providing unit 23 for forming an electrostatic latent image, a developing unit 24 for making the image visible, and a transfer charger 2 for transferring the image to a transfer material.
5 and separating means 26 for separating the transfer material from the photoconductor 21.
A cleaning device 27 and a main charge eliminating light source 29 are arranged.
【０００４】主除電光源２９と感光体２１の残留電位を
露光して消去する主帯電器２２との間には遮光樹脂ブラ
シ３０が設けられている。クリーニリング装置２７に
は、ウレタンゴムなどの弾性材料からなるクリーニング
ブレード２７ａの端縁が圧接している。感光体２１の表
面に残る残留トナーがクリーニングブレード２７ａ位置
に到来したときにには、残留トナーを感光体２１の表面
から掻き落とし、これを擦り抜けたサブミクロンの微粒
子の噴霧物を補修する。A light-shielding resin brush 30 is provided between the main charge eliminating light source 29 and the main charger 22 for exposing and erasing the residual potential of the photosensitive member 21. An edge of a cleaning blade 27a made of an elastic material such as urethane rubber is pressed against the cleaning ring device 27. When the residual toner remaining on the surface of the photoconductor 21 arrives at the position of the cleaning blade 27a, the residual toner is scraped off the surface of the photoconductor 21, and the atomized substance of submicron particles scraped off the residual toner is repaired.
【０００５】また、主除電光源２９と主帯電器２２との
間には、遮光樹脂ブラシ３０が存在するため、クリーニ
ング装置２７からの噴霧飛散物は遮光樹脂ブラシ３０に
よって、主帯電器２２の直前でその流れ込みが阻止され
る。Further, since the light-shielding resin brush 30 exists between the main charge eliminating light source 29 and the main charger 22, the spray scattered matter from the cleaning device 27 is immediately before the main charger 22 by the light-shielding resin brush 30. The flow is blocked by.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上述し
た従来のブラシ帯電装置では、ブラシの繊維に感光体２
１の削れ粉などのクリーニングブレード２７ａによって
除去できない汚れが蓄積されるため帯電能力が低下する
という問題があった。その結果、ランニングを行うと、
感光体２１の帯電電位が低下してしまい、汚れやカブリ
等が発生し著しく画像品質が悪化するという問題が発生
していた。However, in the above-mentioned conventional brush charging device, the photoconductor 2 is attached to the fiber of the brush.
There is a problem that the charging ability is deteriorated because dirt that cannot be removed by the cleaning blade 27a such as the shaving powder of No. 1 is accumulated. As a result, when you run
There has been a problem that the charging potential of the photoconductor 21 is lowered, stains, fog and the like are generated and the image quality is significantly deteriorated.
【０００７】それ故に本発明の課題は、感光体の削れ粉
などのクリーニングブレードで除去できない汚れが蓄積
されないように構成し、帯電電位の低下、汚れやカブリ
等の発生を防止する画像形成装置を提供することにあ
る。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide an image forming apparatus which is configured so that dirt that cannot be removed by a cleaning blade, such as shavings of a photoconductor, does not accumulate, and prevents a decrease in charging potential and the occurrence of dirt and fog. To provide.
【０００８】[0008]
【課題を解決するための手段】本発明によれば、電子写
真プロセスを用いた画像形成装置において、一方向に回
転可能な光導電性を有する画像担持体と、該画像担持体
に当接している帯電器とを含み、該帯電器は、前記画像
担持体に電荷を付与する第１の帯電ブラシ状部材と、前
記回転方向で該第１のブラシ状部材よりも上流側に設置
され、かつ前記画像担持体上の残留するトナーと同極性
のマイナスに帯電する性質を持つ第２の帯電ブラシ状部
材とを備えていることを特徴とする画像形成装置が得ら
れる。According to the present invention, in an image forming apparatus using an electrophotographic process, an image carrier having photoconductivity rotatable in one direction and abutting on the image carrier. A first charging brush-like member that applies an electric charge to the image carrier, and the charging device is installed upstream of the first brush-like member in the rotation direction, and An image forming apparatus is provided which includes a second charging brush-shaped member having a property of being negatively charged with the same polarity as the toner remaining on the image carrier.
【０００９】また、本発明によれば、前記第２の帯電ブ
ラシ状部材は、繊維を１×１０4 〜５×１０5 本／平方
インチの密度でブラシ状に形成した帯電ブラシを用いた
ことを特徴とする画像形成装置が得られる。Further, according to the present invention, the second charging brush-shaped member is a charging brush in which fibers are formed into a brush shape with a density of 1 × 10 4 to 5 × 10 5 fibers / square inch. An image forming apparatus characterized by the above is obtained.
【００１０】また、本発明によれば、前記第２の帯電ブ
ラシ状部材は、−３００Ｖ〜−２ｋＶの定電圧電源にて
帯電することを特徴とする画像形成装置が得られる。According to the present invention, there is also provided an image forming apparatus characterized in that the second charging brush member is charged by a constant voltage power source of -300V to -2kV.
【００１１】[0011]
【作用】本発明の画像形成装置によると、帯電器の上流
側にトナーと同極性のマイナスに帯電する性質をもつ第
２のブラシを設け、この第２のブラシ状部材を画像担持
体に当接するように構成する。この構成により、第２の
ブラシ状部材に感光体の削れ粉等が付着し、下流側であ
る第１のブラシ状部材の汚れを防ぐ。According to the image forming apparatus of the present invention, the second brush having the same polarity as the toner and having the property of being negatively charged is provided on the upstream side of the charging device, and the second brush-like member is brought into contact with the image carrier. Configure to touch. With this configuration, shavings of the photoconductor adhere to the second brush-like member, and the first brush-like member on the downstream side is prevented from being contaminated.
【００１２】[0012]
【実施例】以下、図１に基づき本発明の電子写真プロセ
スを用いた画像形成装置の一実施例を示している。図１
を参照して、画像形成装置は、画像を担持する画像担持
体として反時計回り（図中のＸ方向）に回転する回転円
筒状の感光体１と、感光体１の周辺に感光体表面感光層
を一様に帯電させる帯電器２と、トナー５が収容されて
いる現像ユニット４と、感光体１に同期して搬送される
記録用紙６に転写する転写ローラ８と、保護カバー９を
光ガイドとして静電潜像を光で消去するイレースランプ
１０と、感光体１上に残留するトナー５を除去するクリ
ーナユニット１１とを備えている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an image forming apparatus using the electrophotographic process of the present invention is shown below with reference to FIG. Figure 1
Referring to FIG. 1, the image forming apparatus includes a photosensitive drum 1 having a rotating cylindrical shape that rotates counterclockwise (X direction in the figure) as an image bearing member that carries an image, and a photosensitive member surface photosensitive member around the photosensitive member 1. The charger 2 for uniformly charging the layers, the developing unit 4 containing the toner 5, the transfer roller 8 for transferring to the recording paper 6 conveyed in synchronization with the photoconductor 1, and the protective cover 9 for light. As a guide, an erase lamp 10 for erasing the electrostatic latent image with light and a cleaner unit 11 for removing the toner 5 remaining on the photoconductor 1 are provided.
【００１３】帯電器２は、図２に詳しく示すように、感
光体１の回転方向における下流側に設けられている第１
の帯電ブラシ状部材２ａと、感光体１の回転方向におけ
る上流側に設けられている第２の帯電ブラシ状部材２ｂ
とを有している。As shown in detail in FIG. 2, the charger 2 is a first charger provided on the downstream side in the rotation direction of the photoconductor 1.
Charging brush-like member 2a and a second charging brush-like member 2b provided on the upstream side in the rotation direction of the photoconductor 1.
And have.
【００１４】第１の帯電ブラシ状部材２ａはアクリル、
レーヨン、ナイロン等の繊維からなり、先端部が感光体
１に当接している。具体的に述べると、第１の帯電ブラ
シ状部材２ａは、長さが７ｍｍ，太さが６デニール、幅
が５ｍｍ、抵抗が１×１０3Ωｃｍ〜１×１０4 Ωｃｍ
を有する毛と、導電性を有するステンレス等の金属製の
プレート２ｃで構成されている。毛は、１×１０4 〜５
×１０5 本／平方インチの密度でプレート２ｃに保持さ
れている。第２の帯電ブラシ状部材２ｂはテフロン繊維
からなるブラシもしくは不織布からなり、先端部が感光
体１に当接している。The first charging brush member 2a is acrylic,
It is made of a fiber such as rayon or nylon, and its tip is in contact with the photoconductor 1. More specifically, the first charging brush-shaped member 2a has a length of 7 mm, a thickness of 6 denier, a width of 5 mm, and a resistance of 1 × 10 3 Ωcm to 1 × 10 4 Ωcm.
And a plate 2c made of a metal such as stainless steel having conductivity. Hair is 1 × 10 4 to 5
It is held on the plate 2c at a density of × 10 5 pieces / square inch. The second charging brush-shaped member 2b is made of a brush made of Teflon fiber or a non-woven fabric, and its tip is in contact with the photoconductor 1.
【００１５】クリーナユニット１１には、帯電器２の上
流側にウレタンゴムなどの弾性材料からなるクーリング
ブレード１２が設けられている。クリーニングブレード
１２の先端部は、感光体１に圧接しており、感光体１の
表面に残るトナー５が到来したときに、これを感光体１
の表面から掻き落とす。The cleaner unit 11 is provided with a cooling blade 12 made of an elastic material such as urethane rubber on the upstream side of the charger 2. The tip of the cleaning blade 12 is in pressure contact with the photoconductor 1, and when the toner 5 remaining on the surface of the photoconductor 1 arrives, the cleaning blade 12 cleans it.
Scrape from the surface of.
【００１６】感光体１は、帯電器２にて一様にマイナス
数百Ｖに帯電され、レーザ光３にて出力画像に対応する
静電潜像（画線部が露光されて感光体１の表面電位が減
衰している静電潜像）が形成される。現像ユニット４に
よって現像されたマイナスに帯電したトナー５は、感光
体１に同期して搬送される記録用紙６に転写される。こ
の際、転写ローラ８に印加されるプラスの電界によって
記録用紙６にトナー５が転写される。The photoconductor 1 is uniformly charged to a few hundreds of V by the charger 2, and the electrostatic latent image (image area is exposed by the laser beam 3 corresponding to the output image to expose the photoconductor 1). An electrostatic latent image) whose surface potential is attenuated is formed. The negatively charged toner 5 developed by the developing unit 4 is transferred to the recording paper 6 that is conveyed in synchronization with the photoconductor 1. At this time, the toner 5 is transferred to the recording paper 6 by the positive electric field applied to the transfer roller 8.
【００１７】さらに、イレースランプ１０から発せられ
た波長約６６０ｎｍの光は、保護カバー９を光ガイドと
して感光体１に照射される。感光体１上に残留する静電
潜像は一様にレーザ光３が照射された露光分の電位と同
電位になる。感光体１上に残留するトナー５は、クリー
ナユニット１１にて除去され次に現像に備える。Further, the light having a wavelength of about 660 nm emitted from the erase lamp 10 is applied to the photoconductor 1 by using the protective cover 9 as a light guide. The electrostatic latent image remaining on the photoconductor 1 has the same potential as the potential of the exposure that is uniformly irradiated with the laser light 3. The toner 5 remaining on the photoconductor 1 is removed by the cleaner unit 11 to prepare for the next development.
【００１８】以下に本発明の画像形成装置の電子写真プ
ロセスを用いて実施した検証例を以下に説明する。A verification example carried out by using the electrophotographic process of the image forming apparatus of the present invention will be described below.
【００１９】感光体１は、記録用紙６のＡ４サイズの幅
に対応する形状寸法のものを用意した。帯電器２には、
プロセススピード３３ｍｍ／ｓｅｃにおいて−１３５０
Ｖの定電圧を印加したところ、７００Ｖの帯電電位を安
定して得ることができた。The photosensitive member 1 was prepared in a shape and size corresponding to the width of the recording paper 6 of A4 size. In the charger 2,
-1350 at a process speed of 33 mm / sec
When a constant voltage of V was applied, a charging potential of 700V could be stably obtained.
【００２０】記録用紙６を４０００ページの間欠ランニ
ングを行ったときの帯電電位の低下量は、第２のブラシ
状部材２ｂがない従来の構成においては１０００Ｖであ
ったが、本発明の帯電器２を用いると５００Ｖとなり従
来の構成に対し半減した。The amount of decrease in the charging potential when the recording paper 6 was intermittently run for 4000 pages was 1000 V in the conventional configuration without the second brush member 2b, but the charger 2 of the present invention. Is 500 V, which is half that of the conventional configuration.
【００２１】さらに、寿命までランニングした帯電器２
を観察すると、第２のブラシ状部材２ｂは感光体１の削
れ粉等によって汚れていた。しかし、第１のブラシ状部
材２ａはほとんど汚れていなかったことから、第２のブ
ラシ状部材２ｂによって汚れ、カブリが除去されている
ことが判明した。なお、第２のブラシ状部材２ｂの材質
は、テフロン系のマイナスに帯電する材質を使用すると
汚れ除去の効果が向上する。Further, the charger 2 which has run to the end of its life
When observed, the second brush-shaped member 2b was contaminated by scraped powder of the photoconductor 1 and the like. However, since the first brush-shaped member 2a was scarcely soiled, it was revealed that the second brush-shaped member 2b removed the stains and fog. When the second brush-shaped member 2b is made of a Teflon-based material that is negatively charged, the effect of removing dirt is improved.
【００２２】[0022]
【発明の効果】以上述べたように、本発明の画像形成装
置によれば、画像担持体に電荷を与える第１のブラシ状
部材と、クリーニングブレードで除去できない汚れを除
去する第２のブラシ状部材を用いることにより、第２の
ブラシ状部材に画像担持体の削れ粉のプラスに帯電した
汚れ粉が付着し、下流側である第１のブラシ状部材が汚
れるのを防ぐことができる。As described above, according to the image forming apparatus of the present invention, the first brush-like member for giving the electric charge to the image carrier and the second brush-like member for removing the dirt which cannot be removed by the cleaning blade. By using the member, it is possible to prevent the positively charged dirt powder of the shavings of the image carrier from adhering to the second brush-like member, and preventing the first brush-like member on the downstream side from becoming dirty.
【００２３】したがって、寿命試験においても帯電電位
が低下することなく、汚れ、カブリ等の発生のない品質
の良い画像性能を得ることができる。Therefore, even in the life test, the charging potential does not decrease, and it is possible to obtain high-quality image performance with no stain or fog.
【図１】本発明の画像形成装置における一実施例を示す
概略断面図である。FIG. 1 is a schematic sectional view showing an embodiment of an image forming apparatus of the present invention.
【図２】図１の帯電器及び画像担持体を示す正面図であ
る。FIG. 2 is a front view showing the charger and the image carrier of FIG.
【図３】従来の画像形成装置を示す概略断面図である。FIG. 3 is a schematic sectional view showing a conventional image forming apparatus.
【図４】図３の帯電器の一例を示す正面図である。FIG. 4 is a front view showing an example of the charger of FIG.
１，２１ 感光体（画像担持体） ２ 帯電器 ２ａ 第１の帯電ブラシ状部材 ２ｂ 第２の帯電ブラシ状部材 ３ レーザ光 ４ 現像ユニット ５ トナー ６ 記録用紙 ８ 転写ローラ ９ 保護カバー １０ イレースランプ １１ クリーナユニット ２２ 主帯電器 ２３ 画像情報付与手段 ２４ 現像器 ２５ 転写帯電器 ２６ 分離手段 ２７ クリーニング装置 ２９ 主除電光源 ３０ 遮光樹脂ブラシ 1, 21 Photoreceptor (image bearing member) 2 Charging device 2a First charging brush-shaped member 2b Second charging brush-shaped member 3 Laser light 4 Developing unit 5 Toner 6 Recording paper 8 Transfer roller 9 Protective cover 10 Erase lamp 11 Cleaner unit 22 Main charger 23 Image information imparting means 24 Developing device 25 Transfer charger 26 Separating means 27 Cleaning device 29 Main charge eliminating light source 30 Light-shielding resin brush
Claims (3)
において、一方向に回転可能な光導電性を有する画像担
持体と、該画像担持体に当接している帯電器とを含み、
該帯電器は、前記画像担持体に電荷を付与する第１の帯
電ブラシ状部材と、前記回転方向で該第１のブラシ状部
材よりも上流側に設置され、かつ前記画像担持体上に残
留するトナーと同極性のマイナスに帯電する性質を持つ
第２の帯電ブラシ状部材とを備えていることを特徴とす
る画像形成装置。1. An image forming apparatus using an electrophotographic process, comprising an image carrier having photoconductivity capable of rotating in one direction, and a charger contacting the image carrier.
The charger is installed on the first charging brush-like member that gives electric charges to the image carrier and upstream of the first brush-like member in the rotation direction, and remains on the image carrier. And a second charging brush-shaped member having the same polarity as that of the toner, which has the property of being negatively charged.
前記第２の帯電ブラシ状部材は、繊維を１×１０4 〜５
×１０5 本／平方インチの密度でブラシ状に形成した帯
電ブラシを用いたことを特徴とする画像形成装置。2. The image forming apparatus according to claim 1,
The second charging brush-like member has fibers of 1 × 10 4 to 5
An image forming apparatus using a charging brush formed in a brush shape at a density of × 10 5 pieces / square inch.
前記第２の帯電ブラシ状部材は、−３００Ｖ〜−２ｋＶ
の定電圧電源にて帯電することを特徴とする画像形成装
置。3. The image forming apparatus according to claim 1,
The second charging brush-like member is -300V to -2kV.
An image forming apparatus, which is charged by a constant voltage power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9100594A JPH07295445A (en) | 1994-04-28 | 1994-04-28 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9100594A JPH07295445A (en) | 1994-04-28 | 1994-04-28 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07295445A true JPH07295445A (en) | 1995-11-10 |
Family
ID=14014398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9100594A Pending JPH07295445A (en) | 1994-04-28 | 1994-04-28 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07295445A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6295556A (en) * | 1985-10-23 | 1987-05-02 | Fujitsu Ltd | Brush electrostatic charging device |
| JPH03249775A (en) * | 1990-02-28 | 1991-11-07 | Ricoh Co Ltd | Brush electrostatic charging device and destaticizing device |
| JPH0451074A (en) * | 1990-06-18 | 1992-02-19 | Toei Sangyo Kk | Electrophotographic device |
| JPH05224569A (en) * | 1992-02-17 | 1993-09-03 | Tokyo Electric Co Ltd | Image forming device |
| JPH06102783A (en) * | 1992-09-18 | 1994-04-15 | Canon Inc | Transfer roller, electrifying or discharging brush, electrifying device, and image forming device |
| JPH06102803A (en) * | 1992-09-24 | 1994-04-15 | Toshiba Corp | Cleaning device |
| JPH06301271A (en) * | 1993-04-15 | 1994-10-28 | Canon Inc | Electrostatic charging (or destaticizing) member |
-
1994
- 1994-04-28 JP JP9100594A patent/JPH07295445A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6295556A (en) * | 1985-10-23 | 1987-05-02 | Fujitsu Ltd | Brush electrostatic charging device |
| JPH03249775A (en) * | 1990-02-28 | 1991-11-07 | Ricoh Co Ltd | Brush electrostatic charging device and destaticizing device |
| JPH0451074A (en) * | 1990-06-18 | 1992-02-19 | Toei Sangyo Kk | Electrophotographic device |
| JPH05224569A (en) * | 1992-02-17 | 1993-09-03 | Tokyo Electric Co Ltd | Image forming device |
| JPH06102783A (en) * | 1992-09-18 | 1994-04-15 | Canon Inc | Transfer roller, electrifying or discharging brush, electrifying device, and image forming device |
| JPH06102803A (en) * | 1992-09-24 | 1994-04-15 | Toshiba Corp | Cleaning device |
| JPH06301271A (en) * | 1993-04-15 | 1994-10-28 | Canon Inc | Electrostatic charging (or destaticizing) member |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0233589A1 (en) | Cleaning device and multi-color electrophotographic apparatus | |
| JP3848097B2 (en) | Charging member, charging device, image forming apparatus, and process cartridge | |
| CN100580575C (en) | Image forming apparatus | |
| JP3457956B2 (en) | Image forming device | |
| JPH08137368A (en) | Image forming device and process cartridge | |
| JP2002372878A (en) | Image forming device | |
| JP2013097151A (en) | Process unit and image forming device | |
| JP3324723B2 (en) | Image forming device | |
| JP3327106B2 (en) | Image forming device | |
| JP3330478B2 (en) | Image forming device | |
| JPH07295445A (en) | Image forming device | |
| JP3852225B2 (en) | Image forming apparatus | |
| JP5101033B2 (en) | Image forming apparatus | |
| JP3434413B2 (en) | Image forming device | |
| JP2000029367A (en) | Image forming device | |
| US5754925A (en) | Imaging forming apparatus with enhanced cleaning of residual matter using a developing/cleaning device | |
| JP2007079166A (en) | Cleaning device and image forming apparatus | |
| JPH09106233A (en) | Image forming device | |
| JP2002023580A (en) | Cleaning device, process cartridge, and image forming device | |
| JPH03228081A (en) | Image forming device | |
| JP2004054142A (en) | Image forming apparatus | |
| JPS61144680A (en) | Cleaning device | |
| JP3062146B2 (en) | Dispersion member for dispersion step in image forming method | |
| JPH0675510A (en) | Cleaning device | |
| JP2000162853A (en) | Electrophotographic device, contact electrifying device block, and process unit utilizing the contact electrifying device block |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19961029 |