JPH02204766A - Destaticizer for electrophotographic sensitive body - Google Patents
Destaticizer for electrophotographic sensitive bodyInfo
- Publication number
- JPH02204766A JPH02204766A JP2458689A JP2458689A JPH02204766A JP H02204766 A JPH02204766 A JP H02204766A JP 2458689 A JP2458689 A JP 2458689A JP 2458689 A JP2458689 A JP 2458689A JP H02204766 A JPH02204766 A JP H02204766A
- Authority
- JP
- Japan
- Prior art keywords
- cleaning blade
- destaticizing
- photosensitive drum
- blade
- drum
- 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
- 238000004140 cleaning Methods 0.000 claims abstract description 21
- 230000003068 static effect Effects 0.000 claims description 17
- 108091008695 photoreceptors Proteins 0.000 claims description 9
- 239000013013 elastic material Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 239000006229 carbon black Substances 0.000 abstract description 2
- 229920002379 silicone rubber Polymers 0.000 abstract description 2
- 239000004945 silicone rubber Substances 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- 230000008030 elimination Effects 0.000 description 5
- 238000003379 elimination reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 1
Landscapes
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Cleaning In Electrography (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電子写真感光体の除電器に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a static eliminator for electrophotographic photoreceptors.
電子写真プリンタは第２図に示すように、回転する感光
体ドラム２の周囲に、メインチャージャ１、露光光源３
、現像器４、転写チャージャ５、ブレード電極６、クリ
ーニングブレード８、除電器９がそれぞれ配設されてい
る。従来の除電器９としては光源を用いてその光照射に
より感光ドラム２の表面電位を除電する方式、或いはコ
ロナチャージャによるＡＣ除電方式が採用されている。As shown in FIG. 2, the electrophotographic printer includes a main charger 1 and an exposure light source 3 around a rotating photoreceptor drum 2.
, a developing device 4, a transfer charger 5, a blade electrode 6, a cleaning blade 8, and a static eliminator 9 are provided, respectively. As the conventional static eliminator 9, a method is adopted in which the surface potential of the photosensitive drum 2 is eliminated by irradiation with light using a light source, or an AC static neutralization method using a corona charger.
上述した従来の除電方式では、次のような欠点がある。 The conventional static elimination method described above has the following drawbacks.
前者の光照射によるｒ＠電左方式は、機能分離型有機感
光ドラムを使用し、カット紙に印字するプリンタなどに
おいては、感光体の用紙を介さずに直接転写チャージャ
により逆帯電された部分は光照射によっても除電されず
、地かぶりとして残るという欠点や、高速あるいは小型
装置のように感光ドラムが除電されてから帯電されるま
での時間が非常に短いプロセスにおいては、感光ドラム
のキャリア移動速度が十分に速くないと、除電光量の変
動に対して帯電位も変動するという欠点がある。また後
者のコロナチャージャによるＡＣ除電方式では、チャー
ジャを収り付けるためのスペースが必要であり、感光ド
ラムの小径化が難しく、小型装置には適用できないとい
う欠点がある。The former method, which uses light irradiation, uses a functionally separated organic photosensitive drum, and in printers that print on cut paper, the part of the photosensitive body that is reversely charged by a direct transfer charger without going through the paper is The drawback is that the charge is not removed even by light irradiation and remains as a background fog, and in processes where the time from when the photosensitive drum is removed until it is charged is very short, such as in high-speed or small equipment, the carrier movement speed of the photosensitive drum is If this is not fast enough, there is a drawback that the charged potential will also vary with variations in the amount of static eliminating light. Furthermore, the latter AC static elimination method using a corona charger requires a space to house the charger, making it difficult to reduce the diameter of the photosensitive drum, and has the disadvantage that it cannot be applied to small-sized devices.
本発明の目的は前記課題を解決した電子写真感光体の除
電器を提供することにある。An object of the present invention is to provide a static eliminator for an electrophotographic photoreceptor that solves the above problems.
前記目的を達成するため、本発明に係る電子写真感光体
の除電器においては、導電性弾性体により形成されるク
リーニングブレードを電極として感光体表面に接触させ
、該クリーニングブレードを交流電圧の印加により感光
体表面の除電を行う交流電源に接続したものである。In order to achieve the above object, in the static eliminator for an electrophotographic photoreceptor according to the present invention, a cleaning blade formed of a conductive elastic material is brought into contact with the surface of the photoreceptor as an electrode, and the cleaning blade is removed by applying an alternating current voltage. It is connected to an AC power source that removes static electricity from the surface of the photoreceptor.
以下、本発明の一実施例を図により説明する。 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示す構成図である。FIG. 1 is a block diagram showing an embodiment of the present invention.
図において、電子写真感光体としての回転可能な感光ド
ラム２の周囲にはメインチャージャ１、露光光源３、現
像器４、転写チャージャ５、等が配設されている。In the figure, a main charger 1, an exposure light source 3, a developing device 4, a transfer charger 5, and the like are arranged around a rotatable photosensitive drum 2 as an electrophotographic photosensitive member.
本発明は感光ドラム２の表面に残留するトナーを掻き落
とすクリーニング部と、感光ドラム２の表面電位を除電
する除電器とを一体化したものであり、感光ドラム２の
表面に残留するトナーを掻き落とすクリーニングブレー
ド６を導電性弾性体から構成し、該クリーニングブレー
ド６を感光ドラム２の表面に接触させ、かつ該クリーニ
ングブレード６を電極として除電用交流電源７に接続し
たものである。The present invention integrates a cleaning unit that scrapes off toner remaining on the surface of the photosensitive drum 2 and a static eliminator that removes the surface potential of the photosensitive drum 2. The cleaning blade 6 to be dropped is made of a conductive elastic material, the cleaning blade 6 is brought into contact with the surface of the photosensitive drum 2, and the cleaning blade 6 is connected to an AC power source 7 for static elimination as an electrode.
本発明によれば、クリーニングブレード８はカーボンブ
ラックやアルミニウム粉末などの導電性物質を充填した
シリコンゴム等の弾性体を使用し、感光ドラム２を回転
させながら、交流電源７にてクリーニングブレード８を
介してその感光ドラム２の表面にＡＣ電圧を印加するも
のであり、クリーニングブレード８にて、感光ドラム２
の表面に残留するトナーを掻き落とすとともに、そのク
リーニングブレード８を介して感光ドラム２の表面にＡ
Ｃ電圧を印加して該感光ドラム２の表面電位を除電する
。According to the present invention, the cleaning blade 8 is made of an elastic material such as silicone rubber filled with a conductive substance such as carbon black or aluminum powder, and the cleaning blade 8 is powered by the AC power source 7 while rotating the photosensitive drum 2. The cleaning blade 8 applies an AC voltage to the surface of the photosensitive drum 2 through the cleaning blade 8.
The toner remaining on the surface of the photosensitive drum 2 is scraped off, and the toner A is applied to the surface of the photosensitive drum 2 via the cleaning blade 8.
C voltage is applied to remove the surface potential of the photosensitive drum 2.
以上説明したように本発明はクリーニングブレードに導
電性弾性体を使用し、これを除電用電極とすることによ
り、クリーニング機能と除ｔｌｉ能とを一体化するため
、従来の電子写真プロセスにおいて必要であった除電光
源あるいは除電チャージャを省くことが可能となり、電
子写真１０セスを高速化、小型化できる効果がある。As explained above, the present invention uses a conductive elastic body for the cleaning blade and uses it as a static elimination electrode, thereby integrating the cleaning function and the elimination function, which is necessary in the conventional electrophotographic process. It is now possible to omit the existing static eliminating light source or static eliminating charger, which has the effect of speeding up and downsizing the 10 processes of electrophotography.
第１図は本発明の一実施例を示す構成図、第２図は従来
の電子写真プロセスを示す構成図である。
１・・・メインチャージャ ２・・・感光ドラム３・・
・露光光源 ４・・・現像器５・・・転写チャ
ージャ
６・・・クリーニングブレード
７・・・交流電源
８・・・クリーニングブレード
牙 ｌ 図
特許出願人 日本電気株式会社
牙２図FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a conventional electrophotographic process. 1... Main charger 2... Photosensitive drum 3...
・Exposure light source 4...Developer 5...Transfer charger 6...Cleaning blade 7...AC power supply 8...Cleaning blade fang l Figure Patent applicant NEC Corporation Fang Figure 2
Claims (1)
ードを電極として感光体表面に接触させ、該クリーニン
グブレードを交流電圧の印加により感光体表面の除電を
行う交流電源に接続したことを特徴とする電子写真感光
体の除電器。(1) An electronic device characterized in that a cleaning blade formed of a conductive elastic material is brought into contact with the surface of the photoreceptor as an electrode, and the cleaning blade is connected to an AC power source that removes static electricity from the surface of the photoreceptor by applying an AC voltage. Static eliminator for photographic photoreceptors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2458689A JPH02204766A (en) | 1989-02-02 | 1989-02-02 | Destaticizer for electrophotographic sensitive body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2458689A JPH02204766A (en) | 1989-02-02 | 1989-02-02 | Destaticizer for electrophotographic sensitive body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02204766A true JPH02204766A (en) | 1990-08-14 |
Family
ID=12142263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2458689A Pending JPH02204766A (en) | 1989-02-02 | 1989-02-02 | Destaticizer for electrophotographic sensitive body |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02204766A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6074041A (en) * | 1993-08-26 | 2000-06-13 | Canon Kabushiki Kaisha | Ink jet recording head having an electric discharge path for releasing static electricity and recording apparatus using same |
-
1989
- 1989-02-02 JP JP2458689A patent/JPH02204766A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6074041A (en) * | 1993-08-26 | 2000-06-13 | Canon Kabushiki Kaisha | Ink jet recording head having an electric discharge path for releasing static electricity and recording apparatus using same |
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